镁合金等离子喷涂Al/Al_2O_3涂层的组织与性能

材料热处理学报, 2009, 30(6): 169-173.

镁合金等离子喷涂Al/Al_2O_3涂层的组织与性能

马凯 ^1, , 孙大千 ^2, , 宣兆志 ^3, , 宫文彪 ^4, , 李于朋 ^5,

1.吉林大学材料学院,吉林,长春,130022;长春工程学院机电学院,吉林,长春,130012

2.吉林大学材料学院,吉林,长春,130022

3.吉林大学材料学院,吉林,长春,130022

4.长春工业大学材料学院,吉林,长春,130012

5.长春工业大学材料学院,吉林,长春,130012

基金项目: 吉林省科技发展计划(20090552)

关键词：镁合金 , 等离子喷涂 , 复合材料涂层 , 涂层组织 , 涂层性能

Microstructure and properties of plasma-strayed Al/Al_2O_3, coating on magnesium alloy

MA Kai ^1, , SUN Da-qian ^2, , XUAN Zhao-zhi ^3, , GONG Wen-biao ^4, , Li Yu-peng ^5,

1.吉林大学材料学院,吉林,长春,130022;长春工程学院机电学院,吉林,长春,130012

2.吉林大学材料学院,吉林,长春,130022

3.吉林大学材料学院,吉林,长春,130022

4.长春工业大学材料学院,吉林,长春,130012

5.长春工业大学材料学院,吉林,长春,130012

Keywords： magnesium alloy , plasma spray , composite coating , coating microstructure , coating properties

采用等离子喷涂技术在AZ31镁合金表面制备Al/Al_2O_3复合材料涂层.借助SEM、TEM和XRD等技术分析了涂层的微观组织结构,通过测定涂层电极电位、盐雾实验和磨损实验研究了涂层的耐腐蚀性能和耐磨性能.结果表明,Al/Al_2O_3涂层的相组成主要为Al、Al_2O_3、Mg_(17)Al_(12);Al_2O_3颗粒均匀镶嵌在Al基体中;Mg_(17),Al_(12)主要分布于涂层与镁合金基材的界面处.与镁合金相比,Al/Al_2O_3涂层具有更高的耐腐蚀和耐磨损性能.

Al/Al_2O_3 composite coating was deposited on AZ31 magnesium alloy by plasma spray. The microstructure of the coating was examined by means of SEM, TEM and XRD. Corrosion resistance and wear resistance of the coating were also investigated. The results show that the coating consists mainly of Al, Al_2O_3, andMg_(17)Al_(12) phases. Al_2O_3 particles are uniformly embedded in Al matrix and Mg_(17)Al_(12)phase mainly distributes at interface of the coating and magnesium alloy. Compared with magnesium alloy, Al/Al_2O_3 coating has not only higher corrosion resistance but also higher wear resistance.

参考文献

[1]	Groshart E .Preparation of nonferrous metals for paitin[J].Metal Finishing A,2005,102(11):82-86.
[2]	Voytko J.E.; .Organic Finishing & Pretreatment[J].Plating & Surface Finishing,2000(8):54-56.
[3]	Parco M;Zhao LD;Zwick J;Bobzin K;Lugscheider E .Investigation of HVOF spraying on magnesium alloys[J].Surface & Coatings Technology,2006(6):3269-3274.
[4]	Chiu LH;Chen CC;Yang CF .Improvement of corrosion properties in an aluminum-sprayed AZ31 magnesium alloy by a post-hot pressing and anodizincy treatment[J].Surface & Coatings Technology,2005(2/3):181-187.
[5]	张津,孙智富,叶宏.镁合金表面喷铝防腐蚀层的微观组织分析[J].材料保护,2003(06):17-18.
[6]	Maria Parco;Lidong Zhao;Erich Lugscheider .Investigation of particle flattening behavior and bonding mechanisms of APS sprayed coatings on magnesium alloys[J].Surface and Coatings Technology,2007,201:6290-6296.
[7]	叶宏,张津,孙智富,杨惠,詹捷.镁合金表面等离子喷涂纳米陶瓷涂层研究[J].武汉理工大学学报,2004(04):9-11.
[8]	杨元政,刘正义,庄育智.等离子喷涂Al2O3+13%TiO2陶瓷涂层的组织结构及其耐磨性[J].功能材料,2000(04):390-392.
[9]	冯亚如,张忠明,徐春杰,郭学锋.AZ31镁合金表面等离子喷涂Al65Cu23Fe12涂层的研究[J].铸造技术,2006(02):160-162.
[10]	任家烈;吴爱萍.先进材料的连接[M].北京:机械工业出版社,2000:186-193.
[11]	郝士明.镁的合金化与合金相图[J].材料与冶金学报,2002(03):166-170,202.

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