The Experts below are selected from a list of 273 Experts worldwide ranked by ideXlab platform
Mustafa Kamal - One of the best experts on this subject based on the ideXlab platform.
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Copper effects in mechanical properties of rapidly solidified Sn–Pb–Sb Babbitt Bearing alloys
Materials Science and Engineering: A, 2011Co-Authors: Mustafa Kamal, Abu Bakr El-bediwi, A.r. Lashin, A. H. El-zarkaAbstract:The mechanical behavior of Sn–Pb–Sb Babbitt Bearing alloys has been modified with 5 wt% copper and processed by melt spinning technique. Results on the rapid solidification structure and the ribbon indentation creep tests are discussed. The stress exponent values in the range 2.11–2.75 indicate that grain boundary sliding is the possible mechanism during room-temperature creep deformation of melt-spun Bearing alloys.
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Influence of alloying elements on structure and some physical properties of quenched Sn–Sb alloy
Radiation Effects and Defects in Solids, 2006Co-Authors: Mustafa Kamal, Abu Bakr El-bediwi, Moneim ElshobakiAbstract:We study the influence of ternary and quaternary alloying elements (Pb, Cd, Cu or Cu–Pb and Cu–Cd) on structural, electrical, hardness and other mechanical properties of Sn–Sb alloys (using an X-ray diffractometer and optical microscope, the double bridge method, Vickers hardness tester and the dynamic resonance method) to produce the best alloy for Bearing applications. Adding Cu or Pb to Sn–Sb alloys improves their Bearing properties, such as the mechanical properties (elastic modulus, internal friction, hardness and fracture strain) and thermal conductivity. Also, adding Cu, Pb or Cu–Pb to Sn–Sb alloys makes them excellent in their Bearing applications and environmental hazards when compared with the Pb 88Sn 10Cu 2 alloy for automotive applications (FIAT Normalizzazione) and the lead-based Babbitt Bearing alloy.
Meng Hua - One of the best experts on this subject based on the ideXlab platform.
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Tribological properties of Tin-based Babbitt Bearing alloy with polyurethane coating under dry and starved lubrication conditions
Tribology International, 2015Co-Authors: Dy Zhang, Dongya Zhang, Guangneng Dong, John K L Ho, Hong Zhang, Hui Zhang, Meng HuaAbstract:To improve the tribological properties of Babbitt alloy used as journal Bearing pad specifically under severe condition, Babbitt substrate was prayed with a coating of polyurethane (PU) polymer which had been suitably modified with PTFE particles. Tribological performances, under dry and starved lubrication conditions, of the Babbitt alloy substrate (i) sprayed with PU composite coating and (ii) with bare surface were investigated. Results showed that Babbitt substrate sprayed with PU composite coating gave better friction reduction and wear resistance than the counterparts of bare Babbitt. This was because the PU composites coating served as protective layer leading to the formation of PTFE transfer film on mating surface, hence improving the associated tribological properties during sliding.
A. H. El-zarka - One of the best experts on this subject based on the ideXlab platform.
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Copper effects in mechanical properties of rapidly solidified Sn–Pb–Sb Babbitt Bearing alloys
Materials Science and Engineering: A, 2011Co-Authors: Mustafa Kamal, Abu Bakr El-bediwi, A.r. Lashin, A. H. El-zarkaAbstract:The mechanical behavior of Sn–Pb–Sb Babbitt Bearing alloys has been modified with 5 wt% copper and processed by melt spinning technique. Results on the rapid solidification structure and the ribbon indentation creep tests are discussed. The stress exponent values in the range 2.11–2.75 indicate that grain boundary sliding is the possible mechanism during room-temperature creep deformation of melt-spun Bearing alloys.
Abu Bakr El-bediwi - One of the best experts on this subject based on the ideXlab platform.
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Copper effects in mechanical properties of rapidly solidified Sn–Pb–Sb Babbitt Bearing alloys
Materials Science and Engineering: A, 2011Co-Authors: Mustafa Kamal, Abu Bakr El-bediwi, A.r. Lashin, A. H. El-zarkaAbstract:The mechanical behavior of Sn–Pb–Sb Babbitt Bearing alloys has been modified with 5 wt% copper and processed by melt spinning technique. Results on the rapid solidification structure and the ribbon indentation creep tests are discussed. The stress exponent values in the range 2.11–2.75 indicate that grain boundary sliding is the possible mechanism during room-temperature creep deformation of melt-spun Bearing alloys.
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Influence of alloying elements on structure and some physical properties of quenched Sn–Sb alloy
Radiation Effects and Defects in Solids, 2006Co-Authors: Mustafa Kamal, Abu Bakr El-bediwi, Moneim ElshobakiAbstract:We study the influence of ternary and quaternary alloying elements (Pb, Cd, Cu or Cu–Pb and Cu–Cd) on structural, electrical, hardness and other mechanical properties of Sn–Sb alloys (using an X-ray diffractometer and optical microscope, the double bridge method, Vickers hardness tester and the dynamic resonance method) to produce the best alloy for Bearing applications. Adding Cu or Pb to Sn–Sb alloys improves their Bearing properties, such as the mechanical properties (elastic modulus, internal friction, hardness and fracture strain) and thermal conductivity. Also, adding Cu, Pb or Cu–Pb to Sn–Sb alloys makes them excellent in their Bearing applications and environmental hazards when compared with the Pb 88Sn 10Cu 2 alloy for automotive applications (FIAT Normalizzazione) and the lead-based Babbitt Bearing alloy.
Dy Zhang - One of the best experts on this subject based on the ideXlab platform.
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Tribological properties of Tin-based Babbitt Bearing alloy with polyurethane coating under dry and starved lubrication conditions
Tribology International, 2015Co-Authors: Dy Zhang, Dongya Zhang, Guangneng Dong, John K L Ho, Hong Zhang, Hui Zhang, Meng HuaAbstract:To improve the tribological properties of Babbitt alloy used as journal Bearing pad specifically under severe condition, Babbitt substrate was prayed with a coating of polyurethane (PU) polymer which had been suitably modified with PTFE particles. Tribological performances, under dry and starved lubrication conditions, of the Babbitt alloy substrate (i) sprayed with PU composite coating and (ii) with bare surface were investigated. Results showed that Babbitt substrate sprayed with PU composite coating gave better friction reduction and wear resistance than the counterparts of bare Babbitt. This was because the PU composites coating served as protective layer leading to the formation of PTFE transfer film on mating surface, hence improving the associated tribological properties during sliding.