钛合金表面Al<sub>2</sub>O<sub>3</sub>陶瓷膜制备及性能研究

doi:10.11902/1005.4537.2018.173

中国腐蚀与防护学报

2019, Vol. 39

Issue (6): 469-476 DOI: 10.11902/1005.4537.2018.173

研究报告

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钛合金表面Al₂O₃陶瓷膜制备及性能研究

姜冬雪^1,²,付颖³,张峻巍¹(

),张伟^2,⁴(

),辛丽²,朱圣龙²,王福会⁵

1. 辽宁科技大学材料与冶金学院鞍山 114051
2. 中国科学院金属研究所沈阳 110016
3. 大连华锐重工起重机有限公司大连 116052
4. 福建龙溪轴承 (集团) 股份有限公司漳州 363000
5. 东北大学材料科学与工程学院沈阳材料科学国家研究中心沈阳 110819

Preparation and Properties of Alumina Ceramic Film on Ti-alloy Surface

JIANG Dongxue^1,²,FU Ying³,ZHANG Junwei¹(

),ZHANG Wei^2,⁴(

),XIN Li²,ZHU Shenglong²,WANG Fuhui⁵

1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
2. Shenyang Materials Science National Research Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
3. Dalian Huarui Heavy Industry Crane Co. Ltd. , Dalian 116052, China
4. Fujian Longxi Bearing (Group) Corporation Limited, Zhangzhou 363000, China
5. Shenyang National Laboratory for Materials Science, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

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摘要:

采用多弧离子镀技术在TC4钛合金表面制备了厚度约40 μm的纯Al层，然后在恒流模式下对其进行不同时间的微弧氧化处理，以获得耐磨的Al₂O₃陶瓷膜。采用扫描电镜、X射线衍射仪、显微硬度计、摩擦磨损试验机和拉伸试验机对钛合金镀铝层微弧氧化膜的微观组织结构、显微硬度、耐磨性和结合力进行了观察和测量。结果表明：微弧氧化陶瓷层主要由γ-Al₂O₃和α-Al₂O₃以及少量的非晶相SiO₂组成，膜层均匀、致密。随着微弧氧化时间的延长，Al₂O₃陶瓷层厚度增加，镀铝层厚度减小。微弧氧化3 h时，Al₂O₃膜致密层硬度达到1261 HV。氧化4 h，Al₂O₃陶瓷层厚达60~70 μm，镀铝层几乎全部氧化，钛合金基材亦发生轻微氧化；但是，基体钛合金的氧化反而导致Al₂O₃膜层内形成贯穿裂纹等缺陷，膜层硬度下降，膜层与钛合金基材的结合强度降低。Al₂O₃陶瓷膜的摩擦系数较钛合金基材的有所降低，磨损量明显降低。Al₂O₃陶瓷膜/镀铝层/钛合金体系结合强度大于40 MPa，最高可达68 MPa。

关键词 ：钛合金, 离子镀铝, 微弧氧化, 微观结构, 耐磨性, 结合强度

Abstract：

The application of Ti-alloys is restricted to its low hardness and poor wear resistance. In this paper, a pure Al-fim of 40 μm in thickness was deposited on the surface of TC4 Ti-alloy by multi-arc ion plating, and then micro-arc oxidation (MAO) in constant current mode was carried out to obtain wear-resistant ceramic films. The microstructure, microhardness, wear resistance and bonding strength of MAO films were characterized by mean of SEM, XRD, micro hardness tester etc. The results show that the ceramic film is mainly composed of γ-Al₂O₃, α-Al₂O₃and a small amount of amorphous SiO₂, and the film is uniform and compact. With the increase of the MAO time, the thickness of alumina ceramic film increases. The hardness of the dense portion of MAO coating is 1261 HV after micro-arc oxidation for 3 h. For the case of micro-arc oxidation for 4 h, the thickness of the generated alumina ceramic film is 60~70 μm, while almost the entire pre-deposited Al-film is oxidized, and the substrate Ti-alloy is slightly oxidized. At the same time, some penetration cracks in the oxide film was found, therefore, the hardness of the film and the bonding strength between the film and substrate all decrease. The friction coefficient of MAO ceramic film is lower than that of Ti-alloy substrate, and the wear rate is also obviously reduced. In sum, the bonding strength of MAO ceramic films with the substrate is higher than 40 MPa, whereas, the maximum bonding strength can reach 68 MPa.

Key words： Ti-alloy multi-arc ion plating micro-arc oxidation microstructure wear resistance adhesive strength

收稿日期: 2018-11-23

ZTFLH:

TG174.45

基金资助:国家自然科学基金(U1537107);国家自然科学基金(51871229);辽宁科技大学研究生教育改革与创新项目(2017YJSCX08);辽宁省教育科学“十三五”规划重点课题(JG18DA008);STS 计划配套项目(2016T3030)

通讯作者: 张峻巍,张伟 E-mail: ustlzjw@163.com;weizhang@imr.ac.cn

Corresponding author: Junwei ZHANG,Wei ZHANG E-mail: ustlzjw@163.com;weizhang@imr.ac.cn

作者简介: 姜冬雪，女，1990年，硕士生

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引用本文:

姜冬雪,付颖,张峻巍,张伟,辛丽,朱圣龙,王福会. 钛合金表面Al₂O₃陶瓷膜制备及性能研究[J]. 中国腐蚀与防护学报, 2019, 39(6): 469-476.
Dongxue JIANG, Ying FU, Junwei ZHANG, Wei ZHANG, Li XIN, Shenglong ZHU, Fuhui WANG. Preparation and Properties of Alumina Ceramic Film on Ti-alloy Surface. Journal of Chinese Society for Corrosion and protection, 2019, 39(6): 469-476.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2018.173 或 https://www.jcscp.org/CN/Y2019/V39/I6/469

图1 TC4钛合金离子镀铝层MAO膜的表面形貌

图2 TC4钛合金离子镀铝层MAO膜的截面形貌

图3 TC4钛合金离子镀铝层MAO 处理4 h形成的膜层截面元素EDS分析结果

图4 TC4钛合金离子镀铝层MAO膜的XRD分析结果

表1 TC4钛合金镀铝层MAO膜疏松层与致密层硬度的测量值与平均值 (HV)

图5 TC4钛合金及其镀铝层MAO膜的摩擦系数曲线

表2 TC4钛合金及其镀铝层MAO膜的摩擦磨损实验结果

图6 TC4钛合金及其表面镀铝层MAO膜磨损后的表面和截面形貌

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