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首页> 外文期刊>MATEC Web of Conferences >Physical and Mechanical Properties of Ni-Cr based composites with addition of solid lubricants produced through powder metallurgy process
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Physical and Mechanical Properties of Ni-Cr based composites with addition of solid lubricants produced through powder metallurgy process

机译：Ni-Cr基复合材料的物理和机械性能，加上通过粉末冶金工艺生产的固体润滑剂

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Ni-Cr based composites with and without the addition of solid lubricants (MoS2, silver and CaF2) were prepared by powder metallurgy method. The samples were sintered at two different temperatures, 1000 °C and 1200 °C. The physical properties such as shrinkage, sintered density and porosity were studied. The microstructures of the Ni-Cr based composites were observed by using SEM analysis while the mechanical properties of the composites were measured by Rockwell Hardness Tester. The results revealed that the increased in sintering temperature improved the shrinkage, sintered density and hardness of the composites while less porosity produced. Ni-Cr based composites with the addition of silver and MoS2 exhibited better shrinkage, density and porosity. Besides, 5% of MoS2 addition in the composites improves the hardness of the composites at sintering temperature 1200°C.Key words: solid lubricants / Ni-Cr composites / powder metallurgy / MoS2 / silver / CaF2
机译：通过粉末冶金法制备了添加和不添加固体润滑剂（MoS2，银和CaF2）的Ni-Cr基复合材料。在两个不同的温度1000°C和1200°C下烧结样品。研究了诸如收缩率，烧结密度和孔隙率的物理性质。通过SEM分析观察了Ni-Cr基复合材料的微观结构，同时用Rockwell Hardness Tester测量了复合材料的力学性能。结果表明，烧结温度的提高改善了复合材料的收缩率，烧结密度和硬度，同时产生的孔隙率较小。添加了银和MoS2的Ni-Cr基复合材料表现出更好的收缩率，密度和孔隙率。此外，在1200°C的烧结温度下，复合材料中添加5％的MoS2可提高复合材料的硬度。关键词：固体润滑剂/ Ni-Cr复合材料/粉末冶金/ MoS2 /银/ CaF2

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