Acta Metallurgica Sinica (English Letters) ›› 1993, Vol. 6 ›› Issue (7): 76-79.

• Research paper • Previous Articles    

A NOVEL ROUTE FOR MAKING COERCIVE NdFeB POWDER——HDD PROCESS

XIAO Yaofu ZHANG Zhengyi TANG Weizhong University of Science and Technology Beijing,Beijing,China Associate Professor,University of Science and Technology Beijing,Beijing 100083,China   

  • Received:1993-07-11 Revised:1993-07-11 Online:1993-07-11 Published:2009-10-10

Abstract: NdFeB coercive powder can be obtained directely by hydrogen treated ahoy ingots, The magnetic properties of the powder are comparable with that made by rapidsolidified process.An appreciable coercivity created during hydrogen treatment is closely related to the refined crystal grains.

Key words: NdFeB powder, HDD, recombination, coercivity