黄利保,郝建民,张斌英,马建基.2A12铝合金在两种体系中微弧氧化膜层的磨损性能研究[J].表面技术,2020,49(5):185-190.
HUANG Li-bao,HAO Jian-min,ZHANG Bin-ying,MA Jian-ji.Wear Properties of Microarc Oxidation Coating of 2A12 Aluminum Alloy in Two Systems[J].Surface Technology,2020,49(5):185-190 |
| 2A12铝合金在两种体系中微弧氧化膜层的磨损性能研究 |
| Wear Properties of Microarc Oxidation Coating of 2A12 Aluminum Alloy in Two Systems |
| 投稿时间：2019-08-29 修订日期：2020-05-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.05.022 |
| 中文关键词: 铝合金 微弧氧化 锆盐 磷酸盐 耐磨性 |
| 英文关键词:aluminum alloy micro-arc oxidation zirconium salt phosphate wear resistance |
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| Author | Institution |
| HUANG Li-bao | Material Surface Strengthening Research Institute, Chang'an University, Xi'an 710054, China |
| HAO Jian-min | Material Surface Strengthening Research Institute, Chang'an University, Xi'an 710054, China |
| ZHANG Bin-ying | Material Surface Strengthening Research Institute, Chang'an University, Xi'an 710054, China |
| MA Jian-ji | Material Surface Strengthening Research Institute, Chang'an University, Xi'an 710054, China |
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| 中文摘要: |
| 目的 比较两种不同溶液体系中铝合金微弧氧化膜层的摩擦磨损性能。方法 以2A12铝合金为研究对象，通过微弧氧化技术，制备了在两种体系中的微弧氧化膜层。利用扫描电子显微镜（SEM）和X射线衍射仪（XRD）、显微硬度计、摩擦磨损机，研究了两种不同溶液体系中的微弧氧化膜层的形貌、厚度、硬度和磨损性能的差异。结果 锆盐体系中膜层的生长速率较磷酸盐中的更大。锆盐和磷酸盐体系中膜层的硬度分别为1050HV和1250HV。锆盐体系的膜层主要由α-Al2O3、γ-Al2O3、c-ZrO2和少量的t-ZrO2组成，磷酸盐体系膜层的主要成分是α-Al2O3和γ-Al2O3。锆盐体系中，450 V电压下膜层的摩擦系数为0.425，500 V电压下膜层的摩擦系数为0.375；磷酸盐体系中，450 V电压下膜层的摩擦系数为0.328，500 V电压下膜层的摩擦系数为0.325。结论 锆盐膜层的摩擦系数总体大于磷酸盐膜层。在磨损过程中，被磨掉的GCr15材料填充到膜层的凹坑中。两种溶液体系下，膜层在高电压下表现出更小的摩擦系数。磨损起始阶段为磨粒磨损，稳定阶段为粘着磨损。 |
| 英文摘要: |
| The work aims to compare the wear properties of micro-arc oxidation (MAO) coating of aluminum alloy in two solution systems. In this paper, MAO coatings on 2A12 aluminum alloy were prepared by MAO technology. The morphology, thickness, phase composition, hardness and wear properties of the MAO coatings were investigated by means of Scanning Electron Microscope (SEM), X-ray Diffraction Spectrometer (XRD), Vicker hardness tester and friction tester respectively. The results showed that the growth rate of coating in zircon salt system is higher than that in phosphate system. The hardnesses of zircon salt and phosphate were 1050HV and 1250HV, respectively. The coating of zircon salt system is mainly composed of α-Al2O3, γ-Al2O3, c-ZrO2 and t-ZrO2 phases. The coating of phosphate system coating is composed by α-Al2O3 and γ-Al2O3 phases. In the zircon salt system, the friction coefficient of the coating under the voltage of 450 V and 500 V are 0.425 and 0.375 respectively. In the phosphate system, the friction coefficient of the coating under the voltage of 450 V and 500 V are 0.328 and 0.325 respectively. The friction coefficient of zircon salt coating is higher than that of phosphate coating. During the wear process, the friction auxiliary material GCr15 is filled into the pits of the coating. Under high voltage, the coating in two solution system exhibits a smaller coefficient of friction. The initial stage of wear is abrasive wear and the stable stage is adhesive wear. |
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