Structural and oxidation behavior of atmospheric heat treated plasma sprayed WC-Co coatings

被引：46

作者：

Ghadami, Farzin ^{[1
]}

Ghadami, Soheil ^{[2
]}

Abdollah-Pour, Hassan ^{[2
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Met & Mat, Tehran, Iran

[2] Semnan Univ, Coll Engn, Semnan, Iran

来源：

VACUUM | 2013年 / 94卷

关键词：

WC-Co coatings; Powder feedstock; Microstructural characterization; Oxidation; ABRASIVE WEAR-RESISTANCE; MICROSTRUCTURE;

D O I：

10.1016/j.vacuum.2013.01.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, structural and oxidation behavior of WC-Co coatings was analyzed during atmospheric heat treatment process between 150 degrees C and 1100 degrees C. Two types of WC-12%Co coatings with different particle size and morphology were deposited on steel substrates using Air Plasma Spraying. The coated samples were heat treated in atmosphere in different temperatures between 500 and 1100 degrees C. Microstructural evaluation, X-ray diffraction analysis and microhardness testing were performed before and after heat treatment. In this case, the results showed that, regarding increase hardness of coating samples based on increasing applied temperature, coatings kept their properties up to 500 degrees C. In addition, by increasing heat treatment temperature up to 1100 degrees C, oxidation process in coated layer accelerated and caused coating detachment from the coating-substrate interface. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：64 / 68

页数：5

共 18 条

[1]

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[2]

Babilius A., 2005, Materials Science, V11, P105

[3] Abrasive wear resistance of plasma-sprayed tungsten carbide cobalt coatings [J].