Papers by Author: Wen Ping Liang

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Authors: Wen Ping Liang, Zhong Xu, Qiang Miao, Xiao Ping Liu, Zhi Yong He
Abstract: Ti2AlNb orthorhombic alloy is a promising high temperature structural material for aero-industries due to its advantageous properties. However, insufficient wear-resistance is a major drawback that has restricted the actual uses of this alloy in many circumstances. A treatment of double glow plasma surface chromizing on Ti2AlNb alloy has been carried out as an attempt to resolve this problem. This paper mainly investigated the electrochemical corrosion behaviors of this alloy after chromizing. The microstructure of the chromized layer was analyzed by X-ray diffraction (XRD). The sectional morphology of chromized layer was surveyed through scanning electronic microscopy (SEM).The polarization curves of specimens in three corrosive media, 5% H2SO4, 5% HCl and 3.5% NaCl, were measured. The eroded surface morphologies were also surveyed by SEM. The results indicate that surface chromizing treatment slightly decrease the alloy’s corrosion resistance, but still exhibit good performance.
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Authors: Wen Ping Liang, Zhong Xu, Qiang Miao, Zhi Yong He
Abstract: Ti2AlNb orthorhombic alloy is an attractive high temperature structural material for aero-industries, but insufficient wear-resistance is a major drawback which restricts the actual uses of this alloy in many circumstances. A double glow plasma surface molybdenizing on Ti2AlNb alloy had been carried out to resolve this problem. This paper investigated the electrochemical corrosion behaviors of the alloy after molybdenizing. The polarization curves of specimens in three corrosive media, 5% H2SO4, 5% HCl and 3.5% NaCl, were measured. The eroded surface morphologies were surveyed by SEM. The results indicate that surface molybdenizing decreased the alloy’s corrosion resistance slightly, but still exhibit good performance.
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