烧结过程对钕铁硼微观组织的影响  

Effect of Sintering Process on Microstructure of Nd-Fe-B

作　　者：韦兴 Wei Xing(Fujian Changting Golden Dragon Rare-Earth Co.,Ltd Longyan 366300,Fujian;Fujian Key Laboratory of Rare-earth Functional Materials,Longyan 366300,Fujian,China)

机构地区：[1]福建省长汀金龙稀土有限公司,福建省龙岩市366300 [2]福建省稀土功能材料重点实验室,福建省龙岩市366300

出　　处：《福建冶金》2022年第2期51-54,共4页Fujian Metallurgy

摘　　要：研究了烧结过程中,不同的烧结保温段放气峰对钕铁硼的微观组织的影响,结果表明在400℃之前,烧结会大量释放富含C、O的气体,导致磁体表层的微观组织恶化。通过对烧结放气与保温的关系及毛坯C、O含量的变化规律,可以确定最优的烧结快速升温原则,从而提高生产效率.In this paper, the effects of different outgassing peaks in sintering holding section on the microstructure,properties and impurities of Nd-Fe-B were studied. The results show that before 400℃, a large number of gases rich in C and O will be released during sintering, resulting in the deterioration of the microstructure of the magnet surface. The optimal principle of rapid sintering temperature rise can be determined through the relationship between sintering gas and heat preservation and the content of C and O in blank, so as to improve the production efficiency.

关 键 词：烧结钕铁硼 微观结构 烧结曲线 

分 类 号：TM273[一般工业技术—材料科学与工程]