科研之友
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摘要
In this paper, Nd2Fe14B particle reinforced aluminum matrix composites were prepared by microwave sintering. The effect of reinforced phase content and sintering temperature on the microstructure and properties of the composites were studied. The results show that, the Nd2Fe14B/Al composites prepared by microwave sintering exhibits good mechanical and magnetic properties simultaneously. And there is no other reactive phase exiting in the materials. When the content of Nd2Fe14B is 15 wt% and the sintering temperature is 580 degrees C, the particle dispersion is relatively uniform and the microstructure stability of the composite is the best. Under this condition, the materials have the best mechanical properties, such as the corresponding apparent density, compactness and Vicker hardness are 3.15 g cm(-3), 92% and 104 HV, that are higher than those of other sintered composite sample. The yield strength and compression strength are all the highest with the values of 168 MPa and 222 MPa, which increased by 21% and 28% respectively compared with the sample of pure aluminum sintered at 580 degrees C. And the magnetic properties are also optimal, the coercivity (H-cj) remanence (Br) and maximum magnetic energy product(BH)(max) are 0.60 T, 0.63 T and 60 kJ m(-3) which are superior to the counterpart data 0.35 T, 0.35 T and 25 kJ m(-3) of ferrite magnet.
- 出版日期2019-2
- 单位江苏大学
