电源模式对镁合金微弧氧化生物膜层性能的影响

王泽鑫, 顾钧杰, 齐 芳, 陈靓瑜, 叶 飞, 张正一, Maksym Bobrov, 芦 笙

doi:10.16577/j.issn.1001-1560.2023.0197

材料保护 >

2023 , Vol. 56 >Issue 8: 133 - 142

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0197

工艺探讨

电源模式对镁合金微弧氧化生物膜层性能的影响

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1.江苏科技大学材料科学与工程学院，江苏镇江 212003；2.浙江三一装备有限公司，浙江湖州 313028；3.Department of Material Science and Technology of Metals，Admiral Makarov National University of Shipbuilding Institute，Nikolaev Nikolaev 54025

芦笙(1964-)，博士，主要研究方向为先进焊接技术、新材料、表面工程，电话:13382978962，E-mail:lusheng88168＠qq.com

收稿日期: 2023-02-16

修回日期: 2023-03-12

录用日期: 2023-04-15

网络出版日期: 2023-08-25

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Effects of Power Modes on Properties of Micro-Arc Oxidation Biological Coatings on Magnesium Alloy

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1.School of Materials Science and Engineering，Jiangsu University of Science and Technology，Zhenjiang 212003，China；2.Zhejiang SANY Equipment Co.，Ltd.，Huzhou 313028，China；3.Department of Material Science and Technology of Metals，Admiral Makarov National University of Shipbuilding Institute，Nikolaev 54025，Ukraine

Received date: 2023-02-16

Revised date: 2023-03-12

Accepted date: 2023-04-15

Online published: 2023-08-25

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摘要

目前对不同电源模式下微弧氧化制备生物膜层的研究较少。为此，采用全阶段恒压、全阶段恒流、恒压-恒流、恒流-恒压4 种电源模式在ZK60 镁合金基体表面制备微弧氧化生物膜层，实时记录并分析了不同电源模式下反应过程中电压/电流随时间的变化情况，并采用扫描电镜(SEM)、能谱仪(EDS)、X 射线衍射仪(XRD)及共聚焦显微镜等手段考察了不同电源模式下获得的微弧氧化生物膜层的物相、膜层微观组织结构、膜层元素分布、膜层表面粗糙度及膜层表面接触角等。结果表明:4 种模式下制备的微弧氧化膜层物相为Mg、MgO 及Ca3(PO4)2等钙磷产物。但电源模式不同，膜层厚度及耐蚀性能均不同。由于后期击穿力不足，恒压模式下制备的生物膜层厚度最小，远小于其他3 种电源模式下制得的膜层的，该模式下制得的微弧氧化生物膜层粗糙度也最小。恒流模式由于后期能量过高导致部分膜层脱落，膜层质量较差。恒压-恒流模式则避免了单一恒压和单一恒流模式的缺陷，该复合模式下制备的膜层与其他电源模式下制备的膜层相比，具有微观形貌均匀致密的特点，厚度较大，约为55 μm。电化学测试显示，该复合模式下制备的微弧氧化生物膜层具有较好的耐腐蚀性能，同时该复合模式能耗最低，符合节能降耗的要求。此外，恒压-恒流复合模式下制备的微弧氧化生物膜层还具有较好的生物相容性。

关键词： 电源模式; 镁合金; 微弧氧化; 生物膜层; 性能

本文引用格式

王泽鑫, 顾钧杰, 齐芳, 陈靓瑜, 叶飞, 张正一, Maksym Bobrov, 芦笙 . 电源模式对镁合金微弧氧化生物膜层性能的影响[J]. 材料保护, 2023 , 56(8) : 133 -142 . DOI: 10.16577/j.issn.1001-1560.2023.0197

Abstract

At present，there are few studies on the preparation of biological coatings by micro-arc oxidation under different power modes.In this work，micro-arc oxidation (MAO) process was carried out on the surface of ZK60 magnesium alloy to prepare the biological coatings by means of four different power modes (full stage constant voltage mode，full stage constant current mode，constant voltage-constant current mode，constant current-constant voltage mode).The changes of voltage/current with time in the reaction process under different power supply modes were real-time recorded and analyzed，and the phase，microstructure，element distribution，surface roughness and contact angle of the MAO biological coatings obtained under different power supply modes were investigated by means of scanning electron microscope (SEM)，energy dispersive spectrometer (EDS)，Diffractometer (XRD) and Confocal microscopy.Results indicated that the phase constituents of the coatings prepared under four power modes included Mg，MgO and calcium-phosphorus products such as Ca3(PO4)2.Under different power modes，the thickness and corrosion resistance of the coatings were correspondingly different.The thickness of coatings prepared under constant voltage mode was the smallest due to insufficient breakdown force in the later stage，which was much smaller than other coatings prepared under three different power modes.Therefore，the corresponding roughness was also the smallest.Under the constant current mode，part of the coatings fell off due to high energy in the later stage，which led to the poor quality of the corrosion resistance of the MAO coatings.In contrast，under constant voltage-constant current mode，the defects of single constant voltage and constant current modes could be avoided.Compared with other three ones，the coatings prepared under constant voltage-constant current mode had the characteristics of uniform and dense microstructure，with a large thickness of about 55 μm.The electrochemical test indicated that the MAO biological coating prepared under constant voltage-constant current mode had better corrosion resistance.At the same time，this mode had the lowest energy consumption，which met the requirements of energy saving and consumption reduction.In addition，the MAO coating prepared under the hybrid voltage-current mode had better bio-compatibility.

Key words： power modes; magnesium alloy; micro-arc oxidation; biological coatings; properties

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