Ceramic coating on ceramic with metallic bond coating

被引：5

作者：

Kishitake, K ^{[1
]}

Era, H ^{[1
]}

Otsubo, F ^{[1
]}

Sonoda, T ^{[1
]}

机构：

[1] KYUSHU INST TECHNOL,FAC ENGN,DEPT MAT SCI & ENGN,KITAKYUSHU,FUKUOKA 804,JAPAN

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 1997年 / 6卷 / 03期

关键词：

adhesion strength; alumina coating; bond coating; plasma spraying; veined oxide;

D O I：

10.1007/s11666-997-0072-y

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The change in structure and adhesion strength of the interface by heating in air has been investigated for a plasma-sprayed alumina coating on a ceramic substrate with a 50Ni-50Cr allay bond coating. A veined structure composed of NiO, NiCr2O4, and NiAl2O4 asides grew from the bond coating into cracks or pores in the tap coating and the alumina substrate after heating at 1273 K for 20 h in air, The NiAl2O4 spinel may have formed by the oxidization of nickel, which subsequently reacted with the alumina coating or the substrate. The mechanism of the penetration of the spinel oxides into the cracks or pores is not clear The adhesion strength of the coating is increased to about 15 MPa after heating at 1273 K for 20 h in air, compared to an as-sprayed coating strength of only 1.5 MPa.

引用

页码：368 / 372

页数：5