IC-6高温合金及其防护性涂层的摩擦特性  

TRIBOLOGICAL BEHAVIORS OF SUPERALLOY IC-6 AND ITS PROTECTIVE COATING

作　　者：王 冰[1] 宫 骏[1] 汪爱英[1] 孙超[1] 黄荣芳[1] 闻立时[1] 

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《金属学报》2002年第7期750-754,共5页Acta Metallurgica Sinica

基　　金：中国科学院创新方向性项目

摘　　要：采用电弧离子镀技术在IC-6高温合金上沉积NiCrAlY涂层.研究了NiCrAlY涂层及IC-6高温合金在室温和600℃空气中无润滑状态下,以K17高温合金为摩擦副的摩擦特性.采用带有能谱的扫描电镜（SEM/EDX）分析IC-6高温合金和NiCrAlY涂层磨损表面的形貌和成分.实验结果表明,室温条件下摩擦时,一些碎屑从K17合金上脱落下来,在IC-6合金及NiCrAlY涂层表面上形成磨粒.随着摩擦时间延长,磨损表面元素发生氧化.试样在环境温度为600℃摩擦时,NiCrAlY涂层的表面比较快的形成氧化膜,减少金属-金属间的直接接触.环境温度升高后,摩擦表面温度也随之升高,氧化物的粘滞性增强,600℃时,合金和涂层摩擦系数都有不同程度的减小.NiCrAlY coatings were deposited on superalloy IC-6 by arc ion plating (AIP). Un-lubricated friction and wear behaviors of NiCrAlY coated alloy IC-6 and uncoated alloy IC-6 against alloy K17 were studied. The results indicate that in wear performance at room temperature, debris came off from alloy K17 and then transferred to the surface of alloy IC-6. Both alloy IC-6 and NiCrAlY coating could be oxidized after 6000 cycles. However, oxygen is not in high concentration because only a small amount of stable oxides form in such a short time even the temperature on contact surface reached 300℃. During wear process at 600℃, oxides could form more rapidly on the surface of NiCrAlY coating and impeded the interaction between substrate alloys. Oxides became more viscoidal with the temperature increment on the contact surface. Therefore, the friction coefficients is higher at room temperature than at 600℃.

关 键 词：摩擦持性 高温合金 NICRALY涂层 电弧离子镀 

分 类 号：TG132.32[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—合金]