等离子喷涂制备不同晶型氧化铝涂层的微观结构和摩擦磨损性能
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摘要
等离子喷涂氧化铝涂层通常是以α-Al_2O_3为原料,所制备涂层主要以机械性能相对较差的γ-Al_2O_3晶相为主要物相.研究选用α-Al_2O_3与成本低廉的γ-Al_2O_3粉末为原料,通过等离子喷涂技术制备了2种类型的氧化铝涂层,并对其微观结构、显微硬度和摩擦磨损等性能进行了对比研究.结果表明:选用成本低廉的γ-Al_2O_3粉末制备的氧化铝涂层,其物相以稳定相α-Al_2O_3为主,涂层的硬度和孔隙率等性能相较传统α-Al_2O_3粉末制备的涂层更加优异,并具有良好的抗磨性,因而存在较大的应用开发潜力.
Alumina coating prepared by means of plasma spraying takes usually α-Al_2O_3 as its raw material and the obtained coating takes mainly γ-Al_2O_3 crystal phase with relatively poor mechanical performance as its main phase. In this study, α-Al_2O_3 powders and low-cost γ-Al_2O_3 powder are employed as raw materials to prepare two sorts of alumina coatings with plasma spraying and their microstructures microhardness, and friction-wear performance are compared and investigated. The result shows that the phase of alumina coating prepared with low-cost γ-Al_2O_3 powder will be mainly composed of stable phase α-Al_2O_3 and its hardness and porosity will be more excellent than those of traditional α-Al_2O_3 powder and will have good wear resistance, so that there will be a greater potential of its application and development.
Alumina coating prepared by means of plasma spraying takes usually α-Al_2O_3 as its raw material and the obtained coating takes mainly γ-Al_2O_3 crystal phase with relatively poor mechanical performance as its main phase. In this study, α-Al_2O_3 powders and low-cost γ-Al_2O_3 powder are employed as raw materials to prepare two sorts of alumina coatings with plasma spraying and their microstructures microhardness, and friction-wear performance are compared and investigated. The result shows that the phase of alumina coating prepared with low-cost γ-Al_2O_3 powder will be mainly composed of stable phase α-Al_2O_3 and its hardness and porosity will be more excellent than those of traditional α-Al_2O_3 powder and will have good wear resistance, so that there will be a greater potential of its application and development.
引文
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[14] 杨元政,刘正义,庄育智.等离子喷涂Al2O3陶瓷涂层的结构与组织特征 [J].兵器材料科学与工程,2000,23(3):7-11.
[15] GAO Y,JIE M,LIU Y.Mechanical properties of Al2O3 ceramic coatings prepared by plasma spraying on magnesium alloy [J].Surface & Coatings Technology,2017,315:214-219.
[16] 杨洪伟,栾伟玲,涂善东.等离子喷涂技术的新进展 [J].表面技术,2005,34(6):7-10.
[17] FAUCHAIS P,MONTAVON G,VARDELLE M,et al.Developments in direct current plasma spraying [J].Surface & Coatings Technology,2006,201(5):1908-1921.
[2] YIN Z,TAO S,ZHOU X.Effect of the thickness on properties of Al2O3 coatings deposited by plasma spraying [J].Materials Characterization,2011,62(1):90-93.
[3] 王海军,郭永明,刘明,等.超音速等离子喷涂氧化铝涂层组织性能研究 [J].有色金属(冶炼部分),2008(增刊1):53-56.
[4] DONG S,SONG B,HANSZ B,et al.Improvement in the properties of plasma sprayed metallic,alloy and ceramic coatings using dry-ice blasting [J].Applied Surface Science,2011,257(24):10828-10833.
[5] WANG Y,Li C G,TIAN W,et al.Laser surface remelting of plasma sprayed nanostructured Al2O3-13wt%TiO2,coatings on titanium alloy [J].Applied Surface Science,2009,255(20):8603-8610.
[6] 杨效田,段军灵,付小月,等.Ni60/高铝青铜复合涂层定向组织结构特征 [J].哈尔滨工程大学学报,2018,39(12):2069-2074.
[7] ZHANG JINGDE,YIN YANSHENG,LI JING,et al.Fabrication and properties of Fe3Al-Al2O3 graded coatings [J].Journal Materials Processing Technology,2003,134(2):210-213.
[8] ZHAO Z W,TAY B K,SHEEJA D.Structural characteristics and mechanical properties of aluminium oxide thin films prepared by off-plane filtered cathodic vacuum arc system [J].Surface & Coatings Technology,2003,167(2/3):234-239.
[9] YOU Y,ITO A,GOTO T.Highly (001)-oriented α-Al2O3 films prepared by laser chemical vapor deposition [J].Materials Letters,2013,106:11-13.
[10] PHAM T D,KOBAYASHI M,ADACHI Y.Interfacial characterization of α-alumina with small surface area by streaming potential and chromatography [J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2013,436:148-157.
[11] RUPPI S.Enhanced performance of α-Al2O3,coatings by control of crystal orientation [J].Surface&Coatings Technology,2008,202(17):4257-4269.
[12] YAN P F,DU K,SUI M L.α- to γ-Al2O3,martensitic transformation induced by pulsed laser irradiation [J].ActaMaterialia,2010,58(11):3867-3876.
[13] 花国然,黄因慧,赵剑峰,等.激光熔覆纳米Al2O3等离子喷涂陶瓷涂层 [J].中国有色金属学报,2004,14(2):199-203.
[14] 杨元政,刘正义,庄育智.等离子喷涂Al2O3陶瓷涂层的结构与组织特征 [J].兵器材料科学与工程,2000,23(3):7-11.
[15] GAO Y,JIE M,LIU Y.Mechanical properties of Al2O3 ceramic coatings prepared by plasma spraying on magnesium alloy [J].Surface & Coatings Technology,2017,315:214-219.
[16] 杨洪伟,栾伟玲,涂善东.等离子喷涂技术的新进展 [J].表面技术,2005,34(6):7-10.
[17] FAUCHAIS P,MONTAVON G,VARDELLE M,et al.Developments in direct current plasma spraying [J].Surface & Coatings Technology,2006,201(5):1908-1921.