XPS and AES surface analysis of WC-Co-(Cr) cemented carbide after immersion in neutral solution
Paper in proceeding, 2020

The binder phase Co in WC-Co cemented carbide is dissolved easily in corrosive media (even in neutral solution), which has limited its application in a wider range. In this paper, the influence of Cr on corrosion resistance of WC-Co immersed in neutral solution was studied, with a focus on the surface chemistry of the corrosion product. The results show that in neutral solution, the corrosion is mainly caused by the selective dissolution of Co and the dominant surface corrosion product after immersion is Co (OH)(2). The corrosion resistance of WC-Co cemented carbide can be improved by the addition of Cr. This can be explained by the formation of more protective chromium containing oxide on the binder phase of WC-Co-Cr alloy, leading to reduced corrosion rate.

XPS

WC-Co cemented carbide

Cr

corrosion

AES

Author

Xiuyu Wei

Zhuzhou Cemented Carbide Group Corp. Ltd.

Chalmers, Industrial and Materials Science, Materials and manufacture

State Key Laboratory of Cemented Carbide

Peng Jin

Zhuzhou Cemented Carbide Group Corp. Ltd.

State Key Laboratory of Cemented Carbide

Yanping Xia

Zhuzhou Cemented Carbide Group Corp. Ltd.

State Key Laboratory of Cemented Carbide

Jianzhan Long

Zhuzhou Cemented Carbide Group Corp. Ltd.

State Key Laboratory of Cemented Carbide

Weibing Zhang

State Key Laboratory of Cemented Carbide

Zhuzhou Cemented Carbide Group Corp. Ltd.

Tao Xu

Zhuzhou Cemented Carbide Group Corp. Ltd.

State Key Laboratory of Cemented Carbide

Yu Cao

Chalmers, Industrial and Materials Science, Materials and manufacture

Surface and Interface Analysis

0142-2421 (ISSN) 1096-9918 (eISSN)

Vol. 52 12 845-849

ECASIA 2019 - 18TH EUROPEAN CONFERENCE ON APPLICATIONS OF SURFACE AND INTERFACE ANALYSIS
Dresden, Germany,

Subject Categories

Other Chemistry Topics

Other Materials Engineering

Corrosion Engineering

DOI

10.1002/sia.6890

More information

Latest update

8/1/2021 1