Large Block, High Density, Low Weight Loss Rate and Ezcellent Plating Process for High Grade NdFeB Magnet
(0) In order to produce N44SH and N40UH high-grade magnet, both strip casting and hydrogen decrepitation processes were adopted, and the subsequent milling, sintering and heat-treatment processes were improved. The density of N40UH magnet is risen up to 7.65 g/cm3. Weight loss rate after the Highly Accelerated Stress Test (HAST) for 48 hours is less than 0.2 mg/cm2. The microstructure of magnet shows that the grain size is between 5 to 8 μm. The rich-Nd phase is fine and uniform, the pinhole is very few, such magnet can be used for wind power generator after phosphoruster treatment directly, and it can also be used in hydrogen atmosphere of hybrid car after surface treatment.
high grade Nd-Fe-B magnet low weight loss rate high density
LIN Xi-feng WANG Yong-jie WANG Shuang-zhu DING Kai-hong CHEN Gang CUI Sheng-li PENG Zhong-jie ZHAO Da-jun LV Si-jing CHEN De-jin LI Zhong-hua
Yantai Shougang Magnetic Materials Inc, 888 Yongda Street, Fushan District, Yantai City, Shandong 265500, China
国际会议
北京
英文
296-302
2006-08-29（万方平台首次上网日期，不代表论文的发表时间）