Influence of grit blasting pre-treatment on the adhesion strength of plasma sprayed coatings: fractal analysis of roughness

被引：91

作者：

Amada, S ^{[1
]}

Hirose, T

机构：

[1] Gunma Univ, Gunma 376, Japan

[2] Fujitsu Ltd, Kawasaki, Kanagawa 211, Japan

来源：

SURFACE & COATINGS TECHNOLOGY | 1998年 / 102卷 / 1-2期

关键词：

grit blasting; blasting angle; surface topography; thermal spraying; adhesive strength;

D O I：

10.1016/S0257-8972(97)00628-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Since the adhesive strength of ceramic coatings by plasma spraying is fairly low, serious efforts have been made to improve it. In order to improve the adhesiveness of coatings, the substrate surfaces were roughened by blasting, sometimes by angled blasting as a pre-treatment. The measured adhesive strength showed the maximum value at blasting angle 75 degrees. Average surface roughness of the substrates remains almost constant with respect to the blasting angle. Introducing fractal analysis to evaluating the surface topography of substrates, the fractal dimension was evaluated for the roughened surfaces. It showed a maximum fractal dimension at 75 degrees where the adhesive strength reaches approximately its maximum value. It is concluded that fractal dimension is a better measure than average surface roughness for the evaluation of adhesive strength of ceramic coatings. (C) 1998 Elsevier Science S.A.

引用

页码：132 / 137

页数：6

共 9 条

[1] Introduction of fractal dimension to adhesive strength evaluation of plasma-sprayed coatings [J].