钴铬镍铜合金与碳化钨烧结球接触时的摩擦磨损

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2022-05-04 DOI:10.1080/00325899.2022.2071194

Binghua Wu, Jie Wei, Jin-rong Wu, Mao-li Wang

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引用次数: 0

摘要

本文研究了元素镍（Ni）和铜（Cu）对CoCr基合金摩擦学性能的影响。CoCr基合金的摩擦学是通过使用Bruker UMT TriboLab机器在200 N的正常负载下，频率为3 Hz，持续时间为10 与其他合金相比，Ni含量为5wt%、Cu含量为5wt-%的Co70Cr20Ni5Cu5合金表现出最佳的磨损性能，最小摩擦系数为0.147。耐磨性的大幅提高与磨损表面裂纹萌生和生长的强烈抑制作用有关，这减少了分层磨损。由于Co0.52Cu0.48塑性变形层的存在，像NiCoCr和CrCo这样的硬相可以很容易地在滑动界面上滑动并嵌入基体中，这可以减少分层磨损并降低裂纹扩展速率。

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Friction and wear of cobalt–chromium–nickel–copper alloy in contact with tungsten-carbide-sintered balls

ABSTRACT This paper describes a study of the influence of elemental nickel (Ni) and copper (Cu) elements on the tribological behaviour of a CoCr-based alloy. The tribology of CoCr-based alloys was examined by using a Bruker UMT-TriboLab machine with normal loads of 200 N, a frequency of 3 Hz, and a duration of 10 min. The Co70Cr20Ni5Cu5 alloy with 5wt-% Ni and 5wt-% Cu content showed the best wear property compared with other alloys, with a minimum friction coefficient of 0.147. The large improvement in wear resistance is related to the strongly inhibiting effect of crack initiation and growth in the worn surface, which reduces delamination wear. Because of the Co0.52Cu0.48 plastic deformation layer, hard phases like NiCoCr and CrCo can slip easily on the sliding interface and embed into the matrix, which may decrease delamination wear and reduce the crack growth rate.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.