CAJ | 학술논문

在钛合金（TC4）表面采用激光气体氮化的方法制备TiN表面改性层，采用扫描电子显微镜、X射线能谱仪、X射线衍射仪、显微硬度计、摩擦磨损试验机分别分析了TiN表面涂层的组织形貌、相结构与成分、硬度分布、耐磨损性能及抗气蚀性能。研究结果表明，钛合金激光气体氮化后形成了厚度为840μm，均匀致密、无裂纹和孔洞等缺陷的氮化层，组成相主要有TiN和Ti。激光氮化层的显微硬度可达0.3790 HV，是基体的2.3倍。
재태합금（TC4）표면채용격광기체담화적방법제비TiN표면개성층，채용소묘전자현미경、X사선능보의、X사선연사의、현미경도계、마찰마손시험궤분별분석료TiN표면도층적조직형모、상결구여성분、경도분포、내마손성능급항기식성능。연구결과표명，태합금격광기체담화후형성료후도위840μm，균균치밀、무렬문화공동등결함적담화층，조성상주요유TiN화Ti。격광담화층적현미경도가체0.3790 HV，시기체적2.3배。
TiN modified surface layer on the substrate of titanium alloy (TC4) was carried out by laser gas nitriding. The microstructure morphologies,phase structure,composition and hardness distribution,wear properties of the coatings were studied by scanning electronic microscopy (SEM), Energy Dispersive Spectrdmeter (EDS),X-ray diffraction (XRD),microhardness tester,friction-abrasion testing machine. The results show that the nitrided layer with about 840 μm thickness was sufficiently dense,uniform,crack-free,and without porosity defects,the phase compositions of nitride layer mainly are TiN and Ti. Microhardness of laser gas nitrided layer is 0.3790 HV and 2.3 times of the substrate.