宏观和微观载荷对医用CoCrMo合金摩擦腐蚀机制的影响

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-07-10 DOI:10.1016/j.wear.2025.206201

E. Hyla , A.R. Beadling , G. de Boer , R.M. Hall , M.G. Bryant

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引用次数: 0

摘要

了解磨损机制对于提高关节植入物的耐久性和有效性至关重要。尽管该领域取得了进步，但在连接不同长度尺度、摩擦腐蚀和整体碎屑地层方面仍然存在差距，这凸显了改进的必要性。本研究考察了低碳钴铬钼合金的降解过程，考察了其宏观和微观尺度上的行为。摩擦系数（COF）受到初始接触压力的影响，当接触中的剪切应力低于体的剪切强度时，摩擦系数从主要的机械磨损转变为主要的腐蚀磨损。通过整合两种尺度的见解，本研究提供了对磨损过程的全面视角。它有助于开发设计策略和进一步提高材料性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Macro and micro scale load effects on tribocorrosion mechanisms in biomedical CoCrMo alloys

Understanding wear mechanisms is crucial for enhancing the durability and effectiveness of joint implants. Despite advances in the field, a gap persists in connecting different length scales, tribocorrosion, and overall debris formation, underscoring the need for enhancements.

This study investigates the degradation process of the low-carbon cobaltchromiummolybdenum alloy, examining its behaviour across macro and micro scales. The coefficient of friction (COF) was shown to be influenced by initial contact pressures, alongside a transition from predominantly mechanical to mainly corrosive wear when shear stresses in the contact fell below the shear strength of the bulk.

By integrating insights from both scales, this study provides a comprehensive perspective on wear processes. It contributes to the development design strategies and further improved material performance.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.