Investigation of the corrosion behavior of WC-FeAl-B composites in aqueous media

被引：25

作者：

Rad, M. Habibi ^{[1
]}

Ahmadian, M. ^{[1
]}

Golozar, M. A. ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2012年 / 35卷

关键词：

Intermetallics; EIS; Polarization; ICP-OES; ELECTROCHEMICAL-BEHAVIOR; INTERMETALLIC COMPOUND; ANODIC POLARIZATION; CO; HARDMETALS; SULFATE; CHLORIDE; NICKEL; COBALT;

D O I：

10.1016/j.ijrmhm.2012.04.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this work is to investigate the corrosion mechanisms of WC-FeAl-B composites, with different amounts of boron (0, 250, 500, 750 and 1000 wppm) in acidic, neutral and alkaline solutions using electrochemical methods and solution analysis. Results obtained showed that the pH of the solution significantly affects the corrosion susceptibility. In acidic solution, the corrosion process of WC-FeAl-B consists mainly of Fe dissolution, and the addition of boron of more than 500 ppm increases the corrosion rate. Synergistic effects due to galvanic coupling between the FeAl-B binder and WC accelerated the dissolution of binder. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：62 / 69

页数：8

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