MICROSTRUCTURAL STUDY OF PLASMA-SPRAYED ALUMINA AND NICKEL CHROMIUM COATINGS

被引：15

作者：

PAWLOWSKI, L

机构：

[1] W. Haldenwanger Technische Keramik, GmbH, Berlin, West Ger, W. Haldenwanger Technische Keramik GmbH, Berlin, West Ger

来源：

SURFACE & COATINGS TECHNOLOGY | 1987年 / 31卷 / 02期

关键词：

ALUMINA - Vapor Deposition - FILMS - Microstructure - NICKEL CHROMIUM ALLOYS - Vapor Deposition - PLASMA DEVICES - Torches;

D O I：

10.1016/0257-8972(87)90063-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure of arc-plasma-sprayed alumina and nickel chromium is analyzed by different methods. X-ray analysis provides the phase composition of the coatings. A quantitative metallurgical analysis carried out with the aid of an automated image analyzer is used to determine porosity and pore distributions as well as the content of non-melted grains within the sprayed alumina coatings. This method permits the estimation of the influence of the kind of powder used for spraying and the distance between the plasma torch and the substrate on the coating microstructure. Some details of metallurgical analysis are also discussed and the coating characteristics are complemented by density measurements.

引用

页码：103 / 116

页数：14

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