Zr 基块状金属玻璃与 Si3N4 陶瓷在线性往复滑动下的摩擦学行为

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2024-10-18 DOI:10.1016/j.jnoncrysol.2024.123266

Chaoju Xie , Ning Xu , Meng Zhang , Shengfeng Zhou , Huaijun Lin , Zu Li , Wei Li

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引用次数: 0

摘要

块状金属玻璃（BMG）的摩擦学特性深深地影响着它们在潜在应用中的性能，然而，由于摩擦中的接触条件千差万别，人们对其主要磨损机制的了解还很有限。这项研究系统地报告了 Zr60.14Cu22.31Al9.7Fe4.85Ag3 块状金属玻璃在不同的法向载荷（1-12 N）和往复频率（1-12 Hz）下与 Si3N4 陶瓷进行线性往复滑动时的摩擦学行为。与时间相关的摩擦系数（COF）表明，在磨损试验中存在一个明显的 "磨合 "阶段，在增加法向载荷时，磨合期延长，而在增加往复频率时，磨合期缩短。对磨损表面的观察表明，"磨合 "阶段的磨损机理主要是粘着磨损，而在稳定阶段则是氧化磨损和粘着磨损。有趣的是，高磨损率一般与粘着磨损有关，低磨损率与氧化磨损有关，而高 COF 与氧化磨损有关，低 COF 与粘着磨损有关。这些结果将有助于了解 BMG 的摩擦和磨损。

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Tribological behaviors of Zr-based bulk metallic glass against Si3N4 ceramic under linear reciprocating sliding

Tribological properties of bulk metallic glasses (BMGs) deeply affect their performances in potential applications, however, the main wear mechanisms remain partially understood, for the vastly varying contact conditions in friction. This work systematically reports tribological behaviors of Zr_60.14Cu_22.31Al_9.7Fe_4.85Ag₃ BMG against Si₃N₄ ceramic during linear reciprocating sliding at different normal load (1–12 N) and reciprocating frequency (1–12 Hz). The time-dependent coefficient of friction (COF) indicates a prominent “running-in” stage during wear tests, which lengthens upon increased normal load while reduces at increased reciprocating frequency. Observation on worn surfaces indicates that the wear mechanism during “running-in” is mainly adhesive wear while in the stable stage is oxidative wear and adhesive wear. Intriguingly, high wear rate generally relates to adhesive wear and low wear rate relates to oxidative wear, while high COF relates to oxidative wear and low COF relates to adhesive wear. These results would help to understand the friction and wear of BMGs.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.