Process and Mechanism of in situ Preparation of Ceramic Coatings on Zr-4 Alloy

被引：0

作者：

Lan Renkai ^{[1
]}

Dong Limin ^{[1
]}

Wang Chen ^{[1
]}

Liang Tongxiang ^{[1
]}

Tian Jiemo ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab Fine Ceram, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2013年 / 42卷

关键词：

Zr-4; alloy; micro arc oxidation; ZrO2; ceramic coatings; PLASMA ELECTROLYTIC OXIDATION; ZIRCONIUM;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZrO2 ceramic coatings were formed by micro arc oxidation (MAO) on Zr-4 in mixed electrolyte of calcium glycerophosphate and calcium acetate, with DC pulse power. Microstructure, element composition and distribution and phase composition of the coatings were examined using SEM, XRD and EDS. The results reveal that a dense layer of ceramic oxide film is formed in the electrolyte containing Ca and P by the MAO method. Pores formed by the discharge channels distribute uniformly on the coatings surface, and the inner layer is dense. The principal crystalline phases of the MAO coatings are c-ZrO2 and t-ZrO2, and only trace amounts of m-ZrO2 phase exist. The transition area between the coatings and the base alloy is metallurgical bonding, and the bonding strength is strong.

引用

页码：681 / 684

页数：4

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