ELECTROCHEMICAL ASPECTS OF CORROSION IN SINTERED AND HOT-DEFORMED ND-FE-B MAGNETS

被引：17

作者：

ASSIS, OBG

SINKA, V

FERRANTE, M

OLIVEIRA, IL

机构：

[1] Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, 13569-950 São Carlos, SP

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1995年 / 218卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

CORROSION; MAGNETS; RARE-EARTHS; HOT DEFORMATION; SINTERING;

D O I：

10.1016/0925-8388(94)01383-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

General corrosion behaviour of Nd-Fe-B alloys and magnets was studied by electrochemical tests in acid environment. Sintered and hot-deformed magnets of different compositions were tested. Stoichiometric alloys such as NdCu and Nd6Fe13Cu, corresponding to intergranular phases present in hot-pressed material, were also examined. The results indicate reduction in critical corrosion currents in doped materials. The significant influence of porosity and the fraction of the intergranular Nd-rich phase in the sintered sample is reported.

引用

页码：263 / 266

页数：4

共 10 条

[1] CORROSION CHARACTERISTICS OF ND-FE-B SINTERED MAGNETS CONTAINING VARIOUS ALLOYING ELEMENTS [J].