姬寿长
,
李争显
,
罗小峰
,
杜继红
,
华云峰
,
王彦锋
稀有金属材料与工程
将经过预处理的TC21钛合金试样置入真空渗碳炉中进行渗碳.分别用X射线衍射(XRD)、扫描电子显微镜(SEM)及显微维氏(HV)硬度仪、摩擦磨损试验机,对渗碳层的物相结构、组织形貌、硬度和耐磨性进行分析.结果表明:经渗碳处理后,通过渗层组织可判定没有氢化物,XRD未检测发现氢化物及含H相,出现了TiC等碳化物相,表面硬度提高了2.66倍.渗碳前Ti/Ti对磨的摩擦系数约为0.6,渗碳后TiC/TiC的摩擦系数约为0.23,渗碳体与原始表面的摩擦系数介于二者之间.TC21钛合金对磨两方经渗碳处理,改善了摩擦性能;如Ti/Ti部件对磨时,渗碳方可提高耐磨性,非渗碳件在与渗碳件对磨中,加剧了非渗碳件的磨损.渗碳也改变了TC21钛合金部件之间的摩擦状态,TC21基体由Ti基/Ti球之间的粘着磨损变为Ti基/TiC球磨粒磨损+剥层磨损.
关键词:
TC21钛合金
,
无氢渗碳
,
摩擦系数
,
耐磨性
,
磨粒磨损
,
剥层磨损
J.Y. Chen
,
Y.XLeng
,
P.Yang
,
H. Sun and N. Huang The Departmentof Materials Engineering
,
SouthwestJiaotong University
,
Chengdu 610031
,
China
金属学报(英文版)
In thispaper,the magnetronsputtering wasadoptedtosynthesize Ta5 + doped Titanium dioxidefilms. Micro hardness and wear resistance of doped Titani um dioxide films was studied. The results showed that the doping element haveimproved the micro hardness and the wearability of TiO2 film ,and that the micro hardness wasalwaysimproved with theincreasingofthe dopingele mentdensity buttheimproved degreeofthe wearresistance wasdecreasingaf terincreasing and possessed an optimum valuein a certain densityfilm .
关键词:
doping
,
null
,
null
,
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