Electropolishing of nonplanar surface of a Zr-based bulk metallic glass in NaCl-ethylene glycol electrolyte through a planar cathode

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

Journal of Non-crystalline Solids Pub Date : 2025-05-09 DOI:10.1016/j.jnoncrysol.2025.123609

Xiaokang Yue , Mingming Liu , Xufan Peng , Yanru Zhou , Shunhua Chen

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Abstract

Bulk metallic glasses (BMGs) have been widely used in precise manufacturing industry, and their surface quality is one of the key properties for practical applications. Electropolishing (EP) is an effective technique to improve surface roughness for metal materials with good precision and no tool wear. In this work, the feasibility of electropolishing nonplanar surfaces with planar electrode is verified by multi-physics simulation. On the basis, the EP performance of a Zr-based BMG with inclined and curved surfaces is investigated using a planar steel cathode in NaCl-ethylene glycol solution. Typically, the effects of polishing time, voltage and solution temperature on the surface roughness and morphology are investigated. Besides, during the EP process, Cu-enriched regions on the EPed surfaces are observed, and it was explained through surface morphology and elemental distribution. Eventually, two typical samples are processed using optimized parameters, further confirming the effectiveness of planar electrode in polishing inclined and curved BMG surfaces.

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平面阴极在nacl -乙二醇电解液中对zr基大块金属玻璃非平面表面进行电抛光

大块金属玻璃在精密制造业中有着广泛的应用，其表面质量是其实际应用的关键性能之一。电抛光（EP）是提高金属材料表面粗糙度的有效技术，具有良好的精度和无刀具磨损。本文通过多物理场仿真验证了用平面电极对非平面表面进行电抛光的可行性。在此基础上，采用平面钢阴极，研究了斜曲面和曲面zr基BMG在nacl -乙二醇溶液中的EP性能。研究了抛光时间、电压和溶液温度对表面粗糙度和形貌的影响。此外，在EP过程中，在EP表面观察到cu富集区域，并通过表面形貌和元素分布进行了解释。最后，利用优化后的工艺参数对两个典型样品进行了加工，进一步验证了平面电极抛光倾斜和弯曲BMG表面的有效性。

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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.