黏结相组成对Ti(C,N)基金属陶瓷高温氧化行为的影响  

Effects of Binder Components on High-Temperature Oxidation Behavior of Ti(C,N)-based Cermets

作　　者：朱刚[1] 谢明[1] 陈家林[1] 贾海龙[1] 李再久[1] 刘满门[1] ZHU Gang XIE Ming CHEN Jiaqin JIA Hai-long LI Zai-jiu LIU Man-men(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China)

机构地区：[1]昆明贵金属研究所,稀贵金属综合利用新材料国家重点实验室,昆明650106

出　　处：《机械工程材料》2016年第11期75-80,共6页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51164015);稀贵金属先进材料协同创新中心协同创新基金项目(2014XT01);稀贵金属综合利用新技术国家重点实验室开放课题项目(SKL-SPM-201546)

摘　　要：以Co-Ni、Co-Ni-Fe、Co-Ni-RE、Co-Ni-Cr合金和AlCoCrFeNi合金为黏结相制备了Ti(C,N)基金属陶瓷,研究了这五种金属陶瓷在1 100℃静态空气中的氧化行为,分析了黏结相对其高温氧化行为的影响。结果表明:以前四种合金为黏结相的金属陶瓷的氧化动力学曲线均基本符合扩散过程控制的抛物线规律,且氧化速率常数都是分阶段变化的;以多主元AlCoCrFeNi高熵合金为黏结相则大大提高了Ti(C,N)基金属陶瓷的抗高温氧化性能,这主要归因于黏结相组元中铝元素的活性较强,易于形成较稳定、氧化层致密的,从而使得氧的传输被极大地抑制。Five kinds of Ti（C, N）-based cermets were prepared by taking Co-Ni, Co-Ni-Fe, Co-Ni-RE, Co- Ni-Cr and A1CoCeFeNi alloys as binders, and then the oxidation behavior of the five kinds of Ti（C, N）-based cermets with different binders at 1 100 ℃ in static air was studied, and then the effect of binders on high- temperature oxidation behavior was analyzed. The results show that the oxidation kinetics curves of four Ti（C,N）- based cermets which use the first four alloys as binder followed a parabolic-like law, and their oxidation rate constants changed by stages. The addition of multi-component A1CoCrFeNi high-entropy alloy increased the high- temperature oxidation resistance of Ti（C,N）-based cermet, because the activity of AI element was relatively strong and easy to form a steady and dense oxide scale, which is effective to impede the oxygen transport.

关 键 词：Ti(C  N)基金属陶瓷 黏结相 高温氧化行为 高熵合金 

分 类 号：TG148[一般工业技术—材料科学与工程]