摘要:
The invention relates to a method of obtaining friable and relatively inert TR Fe B type magnetic materials in divided form which lead to magnets having improved corrosion resistance. This method involves treating the material in an atmosphere containing (or capable of containing) hydrogen under the following conditions of absolute pressure (P) and of temperature (T.degree. C.): if P.ltoreq.Pa, 250 Pa, 250+100 log (P/Pa)
摘要翻译:本发明涉及一种获得脆性和相对惰性的TR Fe B型磁性材料的方法,其分为多种形式,其导致具有改善的耐腐蚀性的磁体。 该方法包括在绝对压力(P)和温度(T℃)的以下条件下在含有(或能够含有)氢气的气氛中处理材料:如果P <250,则 Pa,250 + 100log(P / Pa)