Corrosion protection of nanocomposite Nd-Fe-B/α-Fe magnets

被引：20

作者：

Jakubowicz, J ^{[1
]}

机构：

[1] Poznan Univ Technol, Inst Mat Sci & Engn, PL-60965 Poznan, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 314卷 / 1-2期

关键词：

rare earth alloys; permanent magnets; mechanical alloying; nanostructures; corrosion;

D O I：

10.1016/S0925-8388(00)01254-8

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 magnetic properties and corrosion behaviour of two phase nanocomposite Nd-2(Fe,Co,M)(14)B/alpha -Fe-type (M=Zr, AlCr) magnets have been investigated. In this work magnetic hardening was achieved by high-energy ball-milling (HEBM) of the Nd,Fe,,B-type hard magnetic phase with 37.5 vol% of alpha -Fe as soft magnetic phase, followed by annealing. Fully dense Nd-2(Fe,Co,M)(14)B/alpha -Fe-type magnets have been produced by hut pressing. The corrosion behaviour has been studied by potentiostatic measurements. For the Nd12.6Fe66.6Co11.6Al1Cr2B6/37.5 vol% alpha -Fe magnet, the corrosion rate was 0.037 mm year(-1) Effective protection against corrosion for nanocomposite Nd-Fe-Co-Al-Cr-B/alpha -Fe magnets was realised by surface coating with Zn metal. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：305 / 308

页数：4

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