论文

铝基非晶纳米晶复合涂层研究

  • 梁秀兵 ,
  • 张志彬 ,
  • 陈永雄 ,
  • 魏世丞 ,
  • 徐滨士
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  • 1)  装甲兵工程学院装备再制造技术国防科技重点实验室, 北京 100072
    2)  装甲兵工程学院科研部, 北京 100072
    3)  北京工业大学材料科学与工程学院, 北京 100124
梁秀兵, 男, 1974年生, 副研究员, 博士

收稿日期: 2011-09-23

  修回日期: 2012-03-12

  网络出版日期: 2012-03-11

基金资助

国家重点基础研究发展计划项目2011CB013403, 国家高技术研究发展计划项目2009AA03Z342和国家自然科学基金项目50905185资助

STUDY ON Al--BASED AMORPHOUS AND NANOCRYSTALLINE COMPOSITE COATING

  • LIANG Xiu-Bing ,
  • ZHANG Zhi-Ban ,
  • CHEN Yong-Xiong ,
  • WEI Shi-Sheng ,
  • XU Bin-Shi
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  • 1) National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072
    2) Department of Scientific Research, Academy of Armored Forces Engineering, Beijing 100072
    3) College of Material Science and Technology, Beijing University of Technology, Beijing 100124

Received date: 2011-09-23

  Revised date: 2012-03-12

  Online published: 2012-03-11

Supported by

Supported by National Basic Research Program of China (No.2011CB013403), High Technology Research and Development Program of China (No.2009AA03Z342) and National Natural Science Foundation of China (No.50905185)

摘要

采用自动化高速电弧喷涂系统, 用自行研制的粉芯丝材, 在AZ91镁合金基体表面上制备出Al-Ni-Y-Co非晶纳米晶复合涂层. 采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、透射电子显微镜(TEM)分析了Al-Ni-Y-Co非晶纳米晶复合涂层的微观形貌和组织结构, 结果表明Al--Ni-Y-Co非晶纳米晶复合涂层是由非晶相和纳米晶化相共同组成的, 涂层结构致密, 孔隙率约为 1.8%. Al-Ni-Y-Co非晶纳米晶复合涂层的平均显微Vickers硬度值为311.7 HV0.1, 结合强度为26.8 MPa. 涂层的抗磨损耐腐蚀性能优于Al涂层和AZ91镁合金基体; 其相对耐磨性约为Al涂层的10倍, 为AZ91镁合金的6倍; 其自腐蚀电位值正于Al涂层及 AZ91镁合金, 自腐蚀电流密度值约为Al涂层的1/2, AZ91镁合金的1/5; 其腐蚀后的表面形貌比Al涂层和AZ91镁合金平整, 点蚀较少. Al-Ni-Y-Co非晶纳米晶复合涂层的耐磨防腐综合性能优异.

本文引用格式

梁秀兵 , 张志彬 , 陈永雄 , 魏世丞 , 徐滨士 . 铝基非晶纳米晶复合涂层研究[J]. 金属学报, 2012 , 48(3) : 289 -297 . DOI: 10.3724/SP.J.1037.2011.00598

Abstract

An Al-Ni-Y-Co amorphous and nanocrystalline composite coating was prepared on the surface of the AZ91 Mg alloy by using an automatic high velocity arc spraying system. Its microstructures were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD) and transmission electron microscope (TEM). The results show that the coatings compose of amorphous, nanocrystalline and microcrystalline phases, which has a compact structure with low porosity about 1.8%. The average Vickers microhardness and bond strength of this coating are 311.7 HV0.1 and 26.8 MPa. Its relative wear resistance is about 10 times than that of Al coating and 6 times than that of AZ91 magnesium alloy. The corrosion potential of this coating is more positive than that of Al coating and AZ91 magnesium alloy, and the corresponding corrosion current density value is about 1/2 the same as that of Al coating and 1/5 as that of AZ91 Mg alloy. Especially, compared with the surface on corroded Al coating and AZ91 Mg alloy, the corroded Al-Ni-Y-Co coating has a more flattered surface with less corrosive piting than Al coating. It is confirmed that the Al-Ni-Y-Co coating is an excellent coatinig with higher wear-resistance and\linebreak corrosion resistance.

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