本文選題：鈦合金　切入點：直流液相等離子體法　出處：《中國表面工程》2015年06期

【摘要】：為了進一步研究TC4鈦合金在直流液相等離子體法強化過程中的溫度變化,探索強化層的生長過程,通過液相等離子體電解強化技術(shù)在TC4鈦合金表面制備強化層。使用熱電偶測量強化過程中的試樣溫度變化,通過掃描電子顯微鏡(SEM)、能譜儀(EDS)、顯微硬度等測試方法分別研究強化層的表面形貌、顯微結(jié)構(gòu)、元素分布和硬度。結(jié)果表明,較高的試樣溫度(約500℃)有利于TC4鈦合金得到表面完整、均勻的強化層,而260V左右的處理電壓能使試樣達到該溫度。表面化合物層以Ti(C,N)相為主,化合物層下有碳氮元素滲入基體。經(jīng)過處理的強化層硬度較基體明顯提升,近表層硬度可達784HV0.01。研究表明,TC4鈦合金強化層的生長分為4個階段:基材預(yù)熱階段、初步起弧階段、表面弧光滲氮階段和碳氮化合物層向外生長階段。
[Abstract]:In order to further study the temperature change of TC4 titanium alloy during direct current liquid phase plasma strengthening, the growth process of the strengthened layer was explored. The strengthening layer was prepared on the surface of TC4 titanium alloy by means of liquid phase plasma electrolytic strengthening technique. The temperature change of the specimen during the strengthening process was measured by thermocouple. The surface morphology, microstructure, element distribution and hardness of the strengthened layer were studied by means of scanning electron microscope (SEM), energy spectrometer (EDS) and microhardness. The higher sample temperature (about 500 鈩，

本文編號：1666191