(洛陽(yáng)工學(xué)院 材料科學(xué)與工程系， 洛陽(yáng) 471003)
摘 要: 對(duì)磁粉進(jìn)行表面處理，利用冷、熱模壓法制備了金屬基及塑料基兩種粘結(jié)NdFeB 磁體，研究了表面處理前后及不同基體磁體的使用溫度和磁性能。研究結(jié)果表明：磁粉的表面處理可以提高磁體的磁性能及使用溫度，塑料基磁體的磁性能低于金屬基磁體的，但其使用溫度卻較高，可達(dá)180℃左右。
關(guān)鍵字: 表面處理；粘結(jié)；NdFeB；磁性材料；使用溫度；性能
temperature of bonded NdFeB
magnetic composites
LI Xing-rui, YIN Biao
（Department of Materials Science and Engineering,
Luoyang Institute of Technology, Luoyang 471039，China）
Abstract:The rapidly-quenched NdFeB magnetic powders were surface-treated. Two kinds of NdFeB magnets based on metal an d plastic were prepared by c old molding and hot molding, respectively. The service temperature and magnetic properties before and after the surface treatment with different matrix were studied. The result s show that the temperature stability and the magnetic properties of the magnets can be improved by the surface treatment of the magnetic powders. The magnetic properties of the magnets based on plastic are lower than those based on metal, but the service temperature of the magnets based on the plastic is increased greatly. Its usable temperature can reach 180℃.
Key words: surface treatment; bond; NdFeB; magnetic materials; service temperature; properties
