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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 3    June 2009

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Effect of TiN/Ti multilayer on fretting fatigue resistance of Ti-811 alloy at elevated temperature
ZHANG Xiao-hua(张晓化), LIU Dao-xin(刘道新)

Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi’an 710072, China

Abstract:The TiN/Ti multilayer was deposited on Ti-811 alloy surface by magnetron sputtering(MS) technique for improving fretting fatigue(FF) resistance of the titanium alloy at elevated temperature. The element distribution, bonding strength, micro-hardness and ductility of the TiN/Ti multilayer were measured. The effects of the TiN/Ti multilayer on the tribological property and fretting fatigue resistance of the titanium alloy substrate at elevated temperature were compared. The results indicate that by MS technique a TiN/Ti multilayer with high hardness, good ductility and high bearing load capability can be prepared. The MS TiN/Ti multilayer, for its good toughness and tribological behavior, can significantly improve the wear resistance and FF resistance of the Ti-811 alloy at 350 ℃.

 

Key words: fretting fatigue; TiN/Ti multilayer; magnetron sputtering; titanium alloy; elevated temperature

ISSN 1672-7029
CN 43-1423/U

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