EFFECTS OF COATING THICKNESS AND RESIDUAL-STRESSES ON THE BOND STRENGTH OF ASTM C633-79 THERMAL SPRAY COATING TEST SPECIMENS

被引：73

作者：

GREVING, DJ ^{[1
]}

SHADLEY, JR ^{[1
]}

RYBICKI, EF ^{[1
]}

机构：

[1] UNIV TULSA, DEPT MECH ENGN, TULSA, OK 74104 USA

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1994年 / 3卷 / 04期

关键词：

ASTM C 633-79; COATING THICKNESS; FINITE-ELEMENT ANALYSIS; MECHANICAL PROPERTIES; RESIDUAL STRESS;

D O I：

10.1007/BF02658982

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Wire-are-sprayed nickel-aluminum is widely used in the aircraft industry for dimensional restoration of worn parts and as a bond coat for thermal barrier coatings and other top coats. Some repair applications require thick coatings, which often result in lower bond strength, A mechanism being investigated to explain this decrease in bond strength is the free edge effect, which includes both coating residual stresses and coating thickness. The layer-removal method was used to determine experimentally the residual stresses in wire-are-sprayed nickel-aluminum coatings of different thicknesses, Bond strength evaluations were performed using an improved ASTM C 633-79 test specimen, Finite-element analysis and fracture mechanics were used to investigate the effects of coating thickness and residual stress state on coating bond strength.

引用

页码：371 / 378

页数：8

共 13 条

[1]

[Anonymous], 1958, FRACTURE

[2]

GREVING DJ, 1994, P NATIONAL THERMAL S

[3]

Han W., 1993, J THERM SPRAY TECHN, V2, P145, DOI 10.1007/BF02652022

[4]

HOWELL KM, 1992, MATER PERFORMANCE, V31, P29