ISSN   1004-0595

CN  62-1095/O4

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杨素兰, 王文珍, 马勤, 贾均红. Al元素对Ni基合金摩擦学性能的研究[J]. 摩擦学学报, 2017, 37(5): 663-669. DOI: 10.16078/j.tribology.2017.05.014
引用本文: 杨素兰, 王文珍, 马勤, 贾均红. Al元素对Ni基合金摩擦学性能的研究[J]. 摩擦学学报, 2017, 37(5): 663-669. DOI: 10.16078/j.tribology.2017.05.014
YANG Sulan, WANG Wenzhen, MA Qin, JIA Junhong. Effect of Al on the Tribological Properties of Ni-based Alloys[J]. TRIBOLOGY, 2017, 37(5): 663-669. DOI: 10.16078/j.tribology.2017.05.014
Citation: YANG Sulan, WANG Wenzhen, MA Qin, JIA Junhong. Effect of Al on the Tribological Properties of Ni-based Alloys[J]. TRIBOLOGY, 2017, 37(5): 663-669. DOI: 10.16078/j.tribology.2017.05.014

Al元素对Ni基合金摩擦学性能的研究

Effect of Al on the Tribological Properties of Ni-based Alloys

  • 摘要: 利用高能球磨和真空热压烧结技术制备了NiCrMo和NiCrMoAl两种不同的合金. 研究了Al元素对合金的微观组织结构和机械性能的影响,考察了不同温度(RT~900 ℃)条件下合金的摩擦磨损性能,并对磨损机理进行分析. 结果表明:Al元素的加入减少了合金粉末的团聚,促进了烧结过程中合金晶粒的长大,提高了合金的致密度和硬度;尤其在高温摩擦环境中,与NiCrMo合金相比,含有Al元素的NiCrMoAl合金能在摩擦表面形成由MoO3、NiO和NiMoO4等组成的摩擦层,且没有Cr2O3硬质相的生成,极大提高了其高温下的摩擦学性能.

     

    Abstract: In this paper, two different alloys of NiCrMo and NiCrMoAl were prepared by high-energy ball milling and vacuum hot press sintering technology. The effects of Al on the microstructure and mechanical properties of alloys, especially its friction and wear properties under different temperature (RT~900 ℃) were studied. The results show that the addition of Al improved both the compactness and hardness of the alloy and the growth of the grain in the sintering process; meanwhile it also reduced the agglomeration of the alloy powders. At high temperatures, the friction-layer on the worn surface of NiCrMoAl alloy was composed of MoO3, NiO and NiMoO4, but free of Cr2O3 (found on the worn surface of NiCrMo alloy), and rendered good tribological performance.

     

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