典型文献
Improving high-temperature wear resistance of NiCr matrix self-lubricating composites by controlling oxidation and surface texturing
文献摘要：
Self-lubricating composites(SLCs)are widely used in the fields of aerospace and marine,but the conven-tional NiCr matrix SLCs with sulfide as solid lubricant often suffer from low wear resistance at high tem-peratures.In view of its high affinity with oxygen and also the high oxidation rate,appropriate amount of nano Ti was added to NiCr-WS2 composites prepared by spark plasma sintering(SPS)to adjust the ox-idation behavior and surface texture.When exposed to high temperature,Ti was preferentially oxidized in comparison to Ni and Cr,resulting in abundant TiO2 protrusions and microdimples on the surface,i.e.in situ surface texturing.Besides,TiO2 was of high chemical activity and readily to react with other oxide debris during high temperature sliding process to form compounds of NiTiO3 and CrTi2O5.The high chemical activity of oxide debris that was conducive to sintering,combining with the special sur-face texture that stores as many wear debris as possible,promoted the rapid formation of a protective glaze layer on the sliding surface.The NiCr-WS2-Ti composite exhibited low friction coefficient but high wear resistance at elevated temperatures.Especially at 800℃it presented a wear rate of as low as(2.1±0.3)×10-5 mm3 N-1 m-1,accounting for only 2.7％of that of NiCr-WS2 composite.
文献关键词：
中图分类号：
作者姓名：
Xuan Kong;Wenyao Sun;Qunchang Wang;Minghui Chen;Tao Zhang;Fuhui Wang
作者机构：
Shenyang National Laboratory for Materials Science,Northeastern University,Shenyang 110819,China
文献出处：
引用格式：
[1]Xuan Kong;Wenyao Sun;Qunchang Wang;Minghui Chen;Tao Zhang;Fuhui Wang-.Improving high-temperature wear resistance of NiCr matrix self-lubricating composites by controlling oxidation and surface texturing)[J].材料科学技术（英文版）,2022(36):253-263
A类：
microdimples,NiTiO3,CrTi2O5
B类：
Improving,high,wear,resistance,NiCr,matrix,self,lubricating,composites,by,controlling,oxidation,surface,texturing,Self,SLCs,widely,used,fields,aerospace,marine,but,conven,tional,sulfide,solid,lubricant,often,suffer,from,low,In,view,its,affinity,oxygen,also,rate,appropriate,amount,nano,was,added,WS2,prepared,spark,plasma,sintering,SPS,adjust,behavior,texture,When,exposed,preferentially,oxidized,comparison,resulting,abundant,TiO2,protrusions,situ,Besides,chemical,activity,readily,react,other,oxide,debris,during,sliding,process,compounds,that,conducive,combining,stores,many,possible,promoted,rapid,formation,protective,glaze,layer,exhibited,friction,coefficient,elevated,temperatures,Especially,presented,mm3,accounting,only
AB值：
0.496257
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