Warm compacted NbC particulate reinforced ironbase composite(Ⅱ)——Microstructure and properties

来源期刊：中国有色金属学报(英文版)2002年第4期

论文作者：李元元 肖志瑜 倪东惠 夏伟 陈维平

文章页码：664 - 668

Key words：iron-base composite; NbC particulate; mechanical property; tribological behaviors

Abstract: Effects of different sintering temperature and sintering time on the relative density of the sintered compacts were studied to obtain the optimal sintering parameters for the fabrication of NbC particulate reinforced iron-base composite. With optimal sintering temperature of 1280℃ and sintering time of 80min, wear-resisting, high density NbC particulate reinforced iron-base composites can be obtained using warm compaction powder metallurgy. The microstructure, relative density, mechanical properties and tribological behaviors of the sinter ed composites were studied. The results indicate that the mechanical properties of the sintered compacts were closely related to the sintered density. The iron-base composite materials with different combinations of mechanical properties and tribological behaviors were developed for different applications. One of the dev eloped composite, which contains 10%NbC, possesses a high strength of 815MPa with a remarkable friction and wear behaviors. The other developed composite, which contains 15%NbC, possesses a lesser strength of 515MPa but with excellent friction and wear behaviors.

基金信息：the National Natural Science Foundation of China