The corrosion protection of RE-iron-boron magnets by a phosphate treatment

被引：20

作者：

Costa, I

Sayeg, IJ

Faria, RN

机构：

[1] IPEN-CNEN/SP, Säo Paulo, CEP 05422 - 970

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1109/20.619611

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

The effect of a phosphate treatment as a corrosion inhibitor for a RE-Iron-Boron magnet has been investigated. The corrosion characteristics of the magnet in a phosphate solution, which consisted of 0.15 M NaH2PO4, were analyzed by electrochemical impedance and electrochemical noise measurements. The immersion of the magnet in the phosphate solution resulted in the formation of a passive layer on its surface causing a prolonged corrosion protection after removal from the solution. The protective layer was found to consist of phosphate/pyrophosphate and oxide by XPS analysis.

引用

页码：3907 / 3909

页数：3

共 10 条

[1]

HIGH-COERCIVITY ND-FE-B-TYPE PERMANENT-MAGNETS WITH LESS DYSPROSIUM [J].