CORROSION BEHAVIOR OF HOT-WORKED ND-FE-B AND ND-FE-CU-B PERMANENT-MAGNETS

被引：16

作者：

NOZIERES, JP

TAYLOR, DW

BALA, H

MALIK, M

SZYMURA, S

STOKLOSA, H

机构：

[1] CZESTOCHOWA TECH UNIV,DEPT CHEM,PL-42200 CZESTOCHOWA,POLAND

[2] CZESTOCHOWA TECH UNIV,INST PHYS,PL-42200 CZESTOCHOWA,POLAND

[3] CZESTOCHOWA TECH UNIV,DEPT MET,PL-42200 CZESTOCHOWA,POLAND

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1992年 / 186卷 / 02期

关键词：

D O I：

10.1016/0925-8388(92)90005-T

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：

The corrosion resistance of hot-worked Nd-Fe-B and Nd-Fe-B-Cu magnets is studied. In atmospheric conditions, the corrosion rate is the same for sintered Or hot-worked magnets. In acidic solutions, however, the hot-worked magnet exhibit a lower corrosion resistance. In addition, the corrosion mechanism involved appears to differ due to the lower reactivity of the intergranular Nd-rich and B-rich phases. The addition of copper is found to strongly improve the corrosion resistance of hot-worked magnets. With an addition of only 2% Cu, the corrosion resistance of hot-worked magnets turns out to be higher than that of sintered Nd-Fe-B magnets in both environments, neutral and acidic.

引用

页码：201 / 208

页数：8