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Jayanta Das - One of the best experts on this subject based on the ideXlab platform.
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effect of fe addition and Moist Environment on the high temperature oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
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effect of Moist Environment on the oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at ultrafine composites in the range of 700 800 c
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Moist Environment on the oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites in the range of 700–800 °C
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Fe addition and Moist Environment on the high temperature oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
Nawnit Kumar - One of the best experts on this subject based on the ideXlab platform.
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effect of fe addition and Moist Environment on the high temperature oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
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effect of Moist Environment on the oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at ultrafine composites in the range of 700 800 c
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Moist Environment on the oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites in the range of 700–800 °C
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Fe addition and Moist Environment on the high temperature oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
M D Kerstein - One of the best experts on this subject based on the ideXlab platform.
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Moist wound healing
Dermatology nursing, 1996Co-Authors: Helen Chang, Sandi Wind, M D KersteinAbstract:The optimum wound Environment to enhance wound healing is a balance of nutrition, hypoxia, and removal of debris in an occlusive Moist Environment. With increasing knowledge of the healing process and the variety of dressings available, the end result of any wound management will be an expedited wound healing with maximum patient comfort.
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Overview of wound healing in a Moist Environment.
American journal of surgery, 1994Co-Authors: F K Field, M D KersteinAbstract:Maintaining a Moist wound Environment facilities the wound-healing process. The beneficial effects of a Moist versus a dry wound Environment include: prevention of tissue dehydration and cell death, accelerated angiogenesis, increased breakdown of dead tissue and fibrin, i.e., pericapillary fibrin cuffs, and potentiating the interaction of growth factors with their target cells. In addition, pain is significantly reduced when wounds are covered with an occlusive dressing. Concerns that Moisture in wounds would increase the risk of clinical infection over traditional therapies are unfounded. The use of hydrocolloid occlusive dressings in maintaining a Moist wound Environment has proved to be a useful adjunct in facilitating wound healing.
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Overview of wound healing in a Moist Environment. Discussion
American Journal of Surgery, 1994Co-Authors: C. K. Field, M D Kerstein, P. Thomson, C. BaxterAbstract:Maintaining a Moist wound Environment facilitates the wound-healing process. The beneficial effects of a Moist versus a dry wound Environment include: prevention of tissue dehydration and cell death, accelerated angiogenesis, increased breakdown of dead tissue and firin, i.e., pericapillary fibrin cuffs, and potentiating the interaction of growth factors with their target cells. In addition, pain is signicantly reduced when wounds are covered with an occlusive dressing. Concerns that Moisture in wounds would increase the risk of clinical infection over traditional therapies are unfounded. The use of hydrocolloid occlusive dressings in maintaining a Moist wound Environment has proved to be a useful adjunct in facilitating wound healing
Rahul Mitra - One of the best experts on this subject based on the ideXlab platform.
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effect of fe addition and Moist Environment on the high temperature oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
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effect of Moist Environment on the oxidation behavior of mo76 xsi14b10fex x 0 0 5 1 at ultrafine composites in the range of 700 800 c
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Moist Environment on the oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites in the range of 700–800 °C
Corrosion Science, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Moist Environment on the isothermal oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) ultrafine composites containing proeutectic α–Mo solid solution phase and eutectic mixture of Mo3Si (A15) and Mo5SiB2 (T2) phases, have been investigated at temperatures in the range of 700–800 °C. The mass loss has been greatly improved by 99% in Moist Environment than that of dry air both at 700 °C and 800 °C. The addition of Fe further improves the oxidation resistance in both dry and Moist air up to 24 h exposure. The x–ray diffraction and the scanning electron microscopic studies have been performed to reveal the evolution of different phases in the oxide scale and to explore the mechanism of oxidation. The cross-sectional area of the residue alloy in the oxidized coupons has been measured to be 98% in Moist air for x = 1 and 50% in dry air for x = 0 than that of the initial alloy coupon pointing that the oxidation resistance of Mo Si B can be greatly improved in presence of Moist air as well as upon Fe addition.
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Effect of Fe addition and Moist Environment on the high temperature oxidation behavior of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites
Intermetallics, 2019Co-Authors: Nawnit Kumar, Rahul Mitra, Jayanta DasAbstract:Abstract The effect of Fe addition and the Moist Environment on the high temperature isothermal oxidation behaviors of multiphase Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites in the range of 1000–1300 °C have been investigated. The microstructure of all the composites with α–Mo solid solution (SS) and eutectic mixture of Mo3Si + Mo5SiB2 phases, has been refined upon Fe addition, which improves the oxidation resistance and reduces the mass loss up to 55% in dry air and 31% in Moist air for 24 h exposure. Whereas, the oxidation resistance in Moist air improves due to the formation of a protective Fe-rich glassy borosilicate scale, which reduces the vaporization of MoO3 by forming Fe2(MoO4)3. The cross-sectional area of the residual alloy for x = 1 were estimated to be 97% in dry air and 85% in Moist air that of unoxidized coupons. The bulk hardness of the as-cast composite is 1031 Hv for x = 1, which reduced only by 6.7% (962 Hv) upon oxidation at 1300 °C in both dry and Moist air, showing superior stability of the silicide matrix composites for high temperature application. X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy studies were performed to identify the various products of oxidation and to explore the mechanism of protection.
Kusai A Elmusa - One of the best experts on this subject based on the ideXlab platform.
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management of acute and chronic open wounds the importance of Moist Environment in optimal wound healing
Current Pharmaceutical Biotechnology, 2002Co-Authors: Bishara S Atiyeh, John Ioannovich, Christian A Alamm, Kusai A ElmusaAbstract:The history of wound care and management closely parallels that of military surgery which has laid down the principles and dictated the practices of wound cleansing, debridement and coverage. From a treatment standpoint, there are essentially two types of wounds: those characterized by loss of tissue and those in which no tissue has been lost. In the event of tissue loss it is critical to determine whether vital structures such as bone, tendons, nerves and vessels have been exposed. It is also important to determine the amount of soft tissue contusion and contamination. In any case primary wound healing by early closure either primarily or with the help of grafts or flaps is preferred to secondary healing and wound contraction with subsequent contractures which interfere with range of motion and function. Whether the wound is acute or chronic, essential principles of wound care must be observed in order to avoid wound sepsis and achieve rapid and optimal wound healing. - Tissues must be handled gently. - Caustic solutions capable of sterilizing the skin should never be applied to the wound. It is desirable never to put anything in the wound that cannot be tolerated comfortably in the conjunctival sac. - All devitalized tissues must be debrided either hydrodynamically, chemically, mechanically or surgically. - All dead space must be obliterated - Exposed vital structures must be covered by well vascularized tissues. An essential part of any wound management protocol is wound dressing. It cannot be too strongly emphasized that a wound dressing may have a profound influence on healing particularly of secondary type healing, a critical feature being the extent to which such dressing restricts the evaporation of water from the wound surface. A review of available dressing materials is reported with emphasis on the newly developed concept of Moist Environment for optimal healing. a practical guide for dressing selection is also proposed.