The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Hongrui Wang - One of the best experts on this subject based on the ideXlab platform.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm −2 . However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( −2 ), resulting in undesirable dissolution. This is known as stray corrosion. To investigate stray corrosion in ECM, this paper focuses on electrochemical dissolution at Low Current Density in NaNO 3 solution. The anodic polarization curves and Current efficiencies of 304 stainless steel (SS) and Inconel 718 are obtained. Comparison of the ce–j curves reveals the unique dissolution behavior of Inconel 718 at Low Current Density. Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO 3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO 3 . The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO 3 solution.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Zengwei Zhu, Di Zhu, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm−2. However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO3. The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO3 solution.
Dengyong Wang - One of the best experts on this subject based on the ideXlab platform.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm −2 . However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( −2 ), resulting in undesirable dissolution. This is known as stray corrosion. To investigate stray corrosion in ECM, this paper focuses on electrochemical dissolution at Low Current Density in NaNO 3 solution. The anodic polarization curves and Current efficiencies of 304 stainless steel (SS) and Inconel 718 are obtained. Comparison of the ce–j curves reveals the unique dissolution behavior of Inconel 718 at Low Current Density. Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO 3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO 3 . The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO 3 solution.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Zengwei Zhu, Di Zhu, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm−2. However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO3. The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO3 solution.
Anders Larsson - One of the best experts on this subject based on the ideXlab platform.
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High-speed, Low-Current-Density 850 nm VCSELs
IEEE Journal on Selected Topics in Quantum Electronics, 2009Co-Authors: Petter Westbergh, Andrew Joel, Mats Skold, Asa Haglund, Johan S Gustavsson, Anders LarssonAbstract:We report on the design, fabrication, and evaluation of large-aperture, oxide-confined 850 nm vertical cavity surface emitting lasers (VCSELs) with high modulation bandwidth at Low Current densities. We also compare the use of InGaAs and GaAs quantum wells (QWs) in the active region. Both VCSELs reach an output power of 9 mW at room temperature, with a thermal resistance of 1.9deg C/mW. The use of InGaAs QWs improves the high-speed performance and enables a small-signal modulation bandwidth of 20 GHz at 25degC and 15 GHz at 85degC. At a constant bias Current Density of only 11 kA/cm2, we generate open eyes under large-signal modulation at bit rates up to 25 Gbit/s at 85degC and 30 Gbit/s at 55degC.
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32 gbit s multimode fibre transmission using high speed Low Current Density 850 nm vcsel
Electronics Letters, 2009Co-Authors: Petter Westbergh, Asa Haglund, Johan S Gustavsson, Anders Larsson, F Hopfer, G Fiol, D Bimberg, A JoelAbstract:Error free transmission over multimode fibre at data rates up to 32 Gbit/s at 25C and 25 Gbit/s at 85C using an oxide confined 850 nm VCSEL biased at a Current Density of 11–14 kA/cm2 is demonstrated. The VCSEL is optimised for high-speed by reducing capacitance and self-heating and by using strained InGaAs quantum wells for high differential gain.
Chihaya Adachi - One of the best experts on this subject based on the ideXlab platform.
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design of efficient thermally activated delayed fluorescence materials for pure blue organic light emitting diodes
Journal of the American Chemical Society, 2012Co-Authors: Qisheng Zhang, Jie Li, Katsuyuki Shizu, Shuping Huang, Shuzo Hirata, Hiroshi Miyazaki, Chihaya AdachiAbstract:Efficient thermally activated delayed fluorescence (TADF) has been characterized for a carbazole/sulfone derivative in both solutions and doped films. A pure blue organic light emitting diode (OLED) based on this compound demonstrates a very high external quantum efficiency (EQE) of nearly 10% at Low Current Density. Because TADF only occurs in a bipolar system where donor and acceptor centered 3ππ* states are close to or higher than the triplet intramolecular charge transfer (3CT) state, control of the π-conjugation length of both donor and acceptor is considered to be as important as breaking the π-conjugation between them in blue TADF material design.
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Design of Efficient Thermally Activated Delayed Fluorescence Materials for Pure Blue Organic Light Emitting Diodes
2012Co-Authors: Qisheng Zhang, Katsuyuki Shizu, Shuping Huang, Shuzo Hirata, Hiroshi Miyazaki, Chihaya AdachiAbstract:Efficient thermally activated delayed fluorescence (TADF) has been characterized for a carbazole/sulfone derivative in both solutions and doped films. A pure blue organic light emitting diode (OLED) based on this compound demonstrates a very high external quantum efficiency (EQE) of nearly 10% at Low Current Density. Because TADF only occurs in a bipolar system where donor and acceptor centered 3ππ* states are close to or higher than the triplet intramolecular charge transfer (3CT) state, control of the π-conjugation length of both donor and acceptor is considered to be as important as breaking the π-conjugation between them in blue TADF material design
Ningfeng Wang - One of the best experts on this subject based on the ideXlab platform.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm −2 . However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( −2 ), resulting in undesirable dissolution. This is known as stray corrosion. To investigate stray corrosion in ECM, this paper focuses on electrochemical dissolution at Low Current Density in NaNO 3 solution. The anodic polarization curves and Current efficiencies of 304 stainless steel (SS) and Inconel 718 are obtained. Comparison of the ce–j curves reveals the unique dissolution behavior of Inconel 718 at Low Current Density. Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO 3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO 3 . The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO 3 solution.
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investigation of the electrochemical dissolution behavior of inconel 718 and 304 stainless steel at Low Current Density in nano3 solution
Electrochimica Acta, 2015Co-Authors: Dengyong Wang, Ningfeng Wang, Zengwei Zhu, Di Zhu, Hongrui WangAbstract:Abstract In electrochemical machining (ECM), Current densities are typically 20–200 A cm−2. However, sometimes the workpiece is exposed to a Low-Current-Density electric field ( Dissolution experiments are conducted at different corrosion times. The corroded specimens are examined and analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The results indicate that unlike 304 SS, whose surface is well protected by a compact oxide film formed in NaNO3 solution at Low Current Density, Inconel 718 suffers serious selective corrosion due to the formation of a porous film in NaNO3. The formation of solid black products is investigated and discussed. It is found that niobium plays an important role in the dissolution of Inconel 718 at Low Current Density. Qualitative models have been assumed to illustrate the electrochemical dissolution behavior of 304 SS and Inconel 718 at Low Current Density in NaNO3 solution.
