ChemInform Abstract: Double Glow Plasma Surface Metallurgy and Its Applications

Using the double glow plasma surface alloying technique, a titanizing coating with improved wear resistance can be prepared on AISI 316 stainless steel. The purpose of this paper is to investigate process parameter effects by orthogonal array design. Four main factors, titanizing temperature, holding time, voltage difference and electrode distance, are adopted in orthogonal experiments. For each factor, four levels are set. The range analysis is used to investigate the factor and level influences on the coating thickness and specific wear rate. Meanwhile, the analysis of variance method is applied to calculate the contributions of each factor. The results indicate that temperature is most critical. In balancing the coating thickness and the wear property, the optimal process parameters are 950∘C, 3[Formula: see text]h, 200[Formula: see text]V and 18[Formula: see text]mm. Corresponding to the optimal process, the thickness and the specific wear rate of the titanizing coating are 10[Formula: see text][Formula: see text]m and 2.609E−05 mm3⋅ N−1⋅ m−1, respectively.

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A study on high temperature oxidation behavior of double glow plasma surface metallurgy Fe–Al–Cr alloyed layer on Q235 steel

Applied Surface Science ◽

10.1016/j.apsusc.2014.03.053 ◽

2014 ◽

Vol 305 ◽

pp. 259-266 ◽

Cited By ~ 26

Author(s):

Xi-Xi Luo ◽

Zheng-Jun Yao ◽

Ping-Ze Zhang ◽

Qiang Miao ◽

Wen-Ping Liang ◽

...

Keyword(s):

High Temperature ◽

High Temperature Oxidation ◽

Oxidation Behavior ◽

Alloyed Layer ◽

Temperature Oxidation ◽

Plasma Surface ◽

Q235 Steel ◽

Glow Plasma ◽

High Temperature Oxidation Behavior

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Electrochemical Corrosion Behaviors of Ti2AlNb with Double Glow Plasma Surface Chromized

Materials Science Forum ◽

10.4028/www.scientific.net/msf.546-549.1753 ◽

2007 ◽

Vol 546-549 ◽

pp. 1753-1758

Author(s):

Wen Ping Liang ◽

Zhong Xu ◽

Qiang Miao ◽

Xiao Ping Liu ◽

Zhi Yong He

Keyword(s):

Electrochemical Corrosion ◽

X Ray Diffraction ◽

Corrosive Media ◽

Major Drawback ◽

Plasma Surface ◽

Ti2alnb Alloy ◽

Corrosion Behaviors ◽

High Temperature Structural Material ◽

Glow Plasma ◽

Surface Morphologies

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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