The effect of compositional tailoring on the thermal expansion and tribological properties of PS300: A solid lubricant composite coating

被引:68
作者
Dellacorte, C [1 ]
Fellenstein, JA [1 ]
机构
[1] OHIO AEROSP INST,CLEVELAND,OH 44142
来源
TRIBOLOGY TRANSACTIONS | 1997年 / 40卷 / 04期
关键词
solid lubricant; surface films/coatings; adverse environments tribology;
D O I
10.1080/10402009708983703
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper describes a research program in which the goal is to alter the thermal expansion coefficient of a composite solid lubricant coating, PS300, by compositional tailoring. PS300 is a plasma-sprayed coating consisting of chrome oxide, silver and barium fluoride/calcium fluoride eutectic in NiCr binder. By adjusting the composition, the thermal expansion coefficient can be altered, and hence chosen, to more closely match a selected substrate preventing coating spallation at extreme temperatures. Thermal expansion coefficients (CTEs) for a variety of compositions were measured from 25 degrees to 800 degrees C using a commercial dilatometer. The CTEs ranged from 7.0 to 13 x 10(-6)/degrees C depending on the binder content. Subsequent tribological testing of a modified composition indicated that friction and wear properties were generally comparable, and for some operating conditions superior, to the original composition.
引用
收藏
页码:639 / 642
页数:4
相关论文
共 7 条
[1]  
BEMIS K, 1994, TM106472 NASA
[2]  
DELLACORTE C, 1987, ASLE TRANS, V30, P77, DOI 10.1080/05698198708981733
[3]  
DellaCorte C., 1995, TM107056 NASA
[4]  
DellaCorte C, 1996, TM107183 NASA
[5]  
DELLACORTE C, 1996, TM107163 NASA
[6]  
Levin VM, 1967, Mech Solids, V2, P58
[7]  
MANKINS WL, 1990, METALS HDB, P428