Microstructure and magnetic properties of double-phase nanocomposite NdFeB

作者：Chang Ying^*; Pan Chi; Yu Xiaojun; Li Wei; Lian Fazeng

来源：Journal of Rare Earths, 2005, 23(SUPPL. 3): 270-273.

• Bonded magnet
• Double phase nanocomposite
• Fertile
• Neodymium iron boron
• Temperature coefficient

The attempt for the addition of double-phase nanocomposite Nd2Fe14B/Fe3B powders into several RE2Fe14B (RE = Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape of bonded magnets. By means of investigating the variation of compound magnet Br, the interaction between magnetic powders was revealed. The result shows that not chemical but physical interaction exists between elements. The compound effect of Nd2Fe14B/Fe3B-ferrite bonded magnets was detailedly studied. The functional relation was revealed between magnetic properties and fertile content. That is Y = 5.42x2-11.34x + 6.62 (x:ferrite content, Y:(BH)m). The variation of jHc temperature coefficient βjHc with ferrite content was investigated. Following the ferrite content increase, βjHc and hirr are obviously decreased, and compression-resistant strength is enhanced.

• 出版日期2005
• 单位东北大学; 北京科技大学