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首页> 外文期刊>Materials science & engineering >Tribological properties of Zr_(61)Ti_2Cu_(25)Al_(12) bulk metallic glass under simulated physiological conditions
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Tribological properties of Zr_(61)Ti_2Cu_(25)Al_(12) bulk metallic glass under simulated physiological conditions

机译：Zr_（61）Ti_2Cu_（25）Al_（12）大块金属玻璃在模拟生理条件下的摩擦学性能

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摘要

In this work, wear resistance of a Zr_(61)Ti_2Cu_(25)Al_(12) (ZT1) bulk metallic glass (BMG) in dry-sliding and simulated physiological media was investigated using ball-on-flat tribological approach and Si_3N_4 ball as counterpart. It was indicated that wear resistance of the BMG in air and deionized water is superior to Ti6Al4V alloy but inferior to 316 L stainless steel (316 L SS) and Co28Cr6Mo (CoCrMo) alloy. However, under simulated physiological media such as phosphate buffered solution (PBS) and Dulbecco's modified Eagle medium with 10 vol.% fetal bovine serum (DMEM + FBS), the ZT1 BMG exhibits decreased wear resistance in comparison with the Ti6Al4V, 316 L SS and CoCrMo. This is probably associated with its moderate pitting corrosion resistance in the medium containing chloride ions. The presence of protein in the solution has a significant effect to ruin pitting resistance of the BMG, then causing more severe wear damage. Under the dry-wear condition, abrasive wear is a predominant wear mechanism for the ZT1, whereas under deionized water, deterioration induced by abrasive wear can be mitigated. In simulated physiological media, wear deterioration is a typical tribocorrosion controlled by syn-ergistic effects of the abrasive and corrosive wear. For the four investigated metals, wear resistance does not exhibit distinct correlation with hardness, whereas the material with high Young's modulus possesses better wear resistance.
机译：在这项工作中，研究了Zr_（61）Ti_2Cu_（25）Al_（12）（ZT1）大块金属玻璃（BMG）在干滑动和模拟生理介质中的耐磨性，使用了平面球磨擦法和Si_3N_4球作为对应。结果表明，BMG在空气和去离子水中的耐磨性优于Ti6Al4V合金，但次于316 L不锈钢（316 L SS）和Co28Cr6Mo（CoCrMo）合金。但是，在模拟的生理学培养基（例如磷酸盐缓冲液（PBS）和含10％体积的胎牛血清的Dulbecco改良的Eagle培养基（DMEM + FBS））下，与Ti6Al4V，316 L SS和Ti6Al4V相比，ZT1 BMG的耐磨性降低了CoCrMo。这可能与其在含氯离子的介质中具有适度的抗点蚀性能有关。溶液中蛋白质的存在对破坏BMG的抗点蚀性具有显著作用，从而造成更严重的磨损损坏。在干磨条件下，磨料磨损是ZT1的主要磨损机制，而在去离子水中，磨料磨损引起的劣化可以得到缓解。在模拟的生理介质中，磨损恶化是典型的摩擦腐蚀，受磨料和腐蚀磨损的协同作用控制。对于四种被调查的金属，耐磨性与硬度没有明显的相关性，而高杨氏模量的材料具有更好的耐磨性。

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  • 来源
    《Materials science & engineering》 |2014年第4期|292-304|共13页
  • 作者

    Yu Wang; Ling-ling Shi; De-li Duan; Shu Li; Jian Xu;

  • 作者单位

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Specialized Materials and Devices Division, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Specialized Materials and Devices Division, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Wear; Tribocorrosion; Orthopedic implant; Metallic glass; Zirconium alloy;

    机译：穿;摩擦腐蚀骨科植入物;金属玻璃;锆合金;

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