Research on Microstructure and Wear Resistance of Double Glow Plasma Discharge Surface Titanizing on CrZrCu Alloy

Abstract:

CrZrCu is extensively used in spot welding due to their high electrical, thermal and mechanical performance. But when CrZrCu electrode is used in spot welding of galvanized steel sheet, the abrasion, corrosion and oxidation shorten the electrode life rapidly. The electrode is not able to meet the needs of spot welding of galvanized steel sheet .In the paper, double glow plasma discharge surface titanizing was carried out on CrZrCu alloy. The processes of double glow plasma discharge titanizing, surface alloying layer structure were also analyzed elementary. The wear resistance property of glow discharge plasma titanizing layer was also researched. The experimental results indicated that in the plasma titanizing alloying layer, the diffusion of titanium element toward the interior of the CrZrCu alloy substrate forms the intermetallic compound named Cu4Ti, which is beneficial to the reinforcement of CrZrCu substrate. The experimental results confirmed that double glow plasma discharge titanizing could improve the wear resistance of CrZrCu alloy greatly. Under the external load of 300N and 500N, the wear resistance of double glow plasma discharge titanizing layer is7 times and 8.5 times than that of CrZrCu.

• Periodical: Advanced Materials Research (Volumes 154-155)
• Pages: 79-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.154-155.79
• Online since: October 2010
• Authors: Bo Lin He, Fang Tu, Jing Liu
• Keywords: CrZrCu, Double Glow Plasma Discharge, Microstructure, Spot Welding Electrode, Wear Resistance

References

[1] Wang Ming, Tang Yiming, Zhou Ping. The processing property in spot welding of galvanizing steel sheet. The journal of Shanghai Jiaotong university, Vol. 44 (1999), p.155.

[2] Notale. T, Zhu ShuiXing . The spot welding of galvanizing steel sheet used in the automobile manufacturing. Welding technology, Vol. 23 (1994), p.46.

[3] Dupuy T. The degradation of electrodes by spot welding zinc coated steels. Welding in the world , Vol. 42 (1999), pp.58-68.

[4] Wu Hong, Zhang Pingze, Xu Zhong. Effect of Counterface Materials on Friction and Wear Behavior of Double Glow Glasma Discharge Surface Alloying on Ti22Al25Nb Alloy. Journal of Wuhan University of Technology-Mater, Vol. 24 (2009), p.160.

DOI: 10.1007/s11595-009-1106-8

[5] Jiang Xu, ZheYuan Chen, Jie Tao, et al. Corrosion behavior of amorphous/nanocrystalline Al-Cr-Fe film deposited by double glow plasmas technique. Sci in China press. Vol. 52 (2009), p.1225.

DOI: 10.1007/s11431-008-0183-9