Surface property enhancement of Ni-free medical grade austenitic stainless steel by low-temperature plasma carburising
Surface property enhancement of Ni-free medical grade austenitic stainless steel by low-temperature plasma carburising
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DOI：
10.1016/j.surfcoat.2010.06.062
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发表时间：
2010-10-15
影响因子：
5.4
通讯作者：
Dong, Hanshan
中科院分区：
文献类型：
--
作者：
Buhagiar, Joseph;Qian, Linmao;Dong, Hanshan
在已报道的可行性研究成功的基础上，从电化学腐蚀、干磨损、腐蚀磨损和在林格液中的微动磨损等方面对低温等离子渗碳P558型医用级奥氏体不锈钢(ASTMF2581)的表面性能进行了全面的评价。阳极极化试验表明，经500℃、15h的低温等离子体渗碳生成的无沉淀物的S相能够保持未处理的ASTMF2581无镍材料在林格液中的良好耐蚀性。无镍奥氏体不锈钢在空气中(干磨损)和在林格氏溶液(腐蚀磨损)中往复运动时，其耐磨性分别可提高700%和140%。此外，低温等离子渗碳处理可显著降低摩擦系数，提高无镍奥氏体不锈钢在林格氏溶液(C)2010 Elsevier B.V.中的微动磨损性能。
Based on the success of the feasibility study reported, the surface properties of low-temperature plasma carburised P558 Ni-free medical grade (ASTM F2581) austenitic stainless steel have been fully evaluated in terms of electrochemical corrosion, dry- and corrosion-wear and fretting-wear in Ringer's solution Anodic polarization tests demonstrated that the precipitate-free S-phase generated by low-temperature plasma carburising at 500 degrees C for 15 h can retain the good corrosion resistance of the untreated ASTM F2581 NI-Free material in Ringer's solution. The wear resistance of the NI-free austenitic stainless steel can be improved by 700% and 140% when reciprocating against a WC ball in air (dry-wear) and in Ringer's solution (corrosion-wear) respectively In addition, the low-temperature plasma carburising treatment can considerably reduce the friction coefficient and improve the fretting-wear resistance of the Ni-free austenitic stainless steel in Ringer's solution (C) 2010 Elsevier B.V. All rights reserved