等离子喷涂纳米结构ZrO2-7%Y2O3热障涂层的组织及性能
Microstructure and Properties of Plasma-Sprayed Nanostructure ZrO2-7%Y2O3 Thermal Barrier Coatings
摘 要
以常规和纳米团聚体ZrO2-7%Y2O3(质量分数)陶瓷粉为原料, 采用等离子喷涂工艺在TiAl合金表面制备热障涂层; 用扫描电镜和显微硬度计分析了涂层形貌、显微结构及显微硬度, 并对涂层的摩擦学特性及抗高温氧化性能进行了研究。结果表明: 常规陶瓷涂层呈典型的层状堆积特征; 纳米结构涂层呈纳米颗粒完全熔化后重结晶得到的基体相和未完全熔化的纳米颗粒嵌入组成的两相结构; 纳米结构涂层的表面硬度较高为1 267.6 HV, 摩擦因数较低为0.8, 850 ℃氧化100 h的质量增加仅为2.64 mg·cm-2。
热障涂层
显微组织
性能
plasma spraying
thermal barrier coating
microstructure
property
Abstract
The thermal barrier coatings (TBCs) were prepared on TiAl alloy surface by plasma spraying using conventional and nanostructure agglomerates ZrO2-7wt%Y2O3 ceramics powders as raw materials. The morphology, microstructure and microhardness of the coatings were investigated by means of scanning electron microscopy and microhardness tester. The tribological propereies and high-temperature oxidation resistance of the coatings were analyzed. The results show that the conventional ceramic coatings had a typical lamellar stacking characteristics. The nanostructure coatings exhibited two-phase structure, including the matrix phase recrystallized after nano particles completely melting and the embedded phase with partial melting nano particles. The surface hardness of nanostructure coating was 1 267.6 HV, and the friction coefficient was 0.8. The mass gain of the coating after oxidation at 850 ℃ for 100 h was 2.64 mg·cm-2.
中图分类号 TG174.44
所属栏目
基金项目 国家自然科学基金资助项目(59975046, 50305010); 江苏省自然科学基金项目(BK2004005, BK2009375); 2011年安徽省高等学校省级自然科学研究项目(kj2011B185); 铜陵学院自然科学研究项目(2010tlxy20); 铜陵学院引进人才科研启动基金资助项目
收稿日期 2010/1/13
修改稿日期 2010/10/7
网络出版日期
作者单位点击查看
备注王东生(1978-), 男, 江苏宜兴人, 讲师, 博士。
引用该论文: WANG Dong-sheng,TIAN Zong-jun,QU Guang,ZHANG Shao-wu,SHEN Li-da,HUANG Yin-hui. Microstructure and Properties of Plasma-Sprayed Nanostructure ZrO2-7%Y2O3 Thermal Barrier Coatings[J]. Materials for mechancial engineering, 2011, 35(3): 87～91
王东生,田宗军,曲光,张少伍,沈理达,黄因慧. 等离子喷涂纳米结构ZrO2-7%Y2O3热障涂层的组织及性能[J]. 机械工程材料, 2011, 35(3): 87～91
被引情况:
【1】任鑫,玄兹航,曹丹凤,孔令梅,朱鹤, "NiCr-CrAl涂层的高温氧化行为",机械工程材料 39, 16-19(2015)
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【2】KHAN A N, LU J. Thermal cyclic behavior of air plasma sprayed thermal barrier coatings sprayed on stainless steel substrates[J].Surface and Coatings Technology,2007,201(5):4653-4658.
【3】GAUTHIER V, DETTENWANGER F, SCHUTZE M. Oxidation behavior of γ-TiAl coated with zirconia thermal barriers[J].Intermetallics,2002,10(7):667-674.
【4】何康康,田宗军,王东生,等.等离子喷涂纳米Al2O3-13%TiO2陶瓷涂层的组织结构与抗冲蚀性能[J].机械工程材料,2008,33(8):77-80.
【5】RACEK O, BERNDT C C, GURU D N,et al. Nanostructured and conventional YSZ coatings deposited using APS and TTPR techniques[J].Surface and Coatings Technology,2006,201(1/2):338-346.
【6】LI J F, LIAO H, WANG X Y,et al. Plasma spraying of nanostructured partially yttria stabilized zirconia powders[J].Thin Solid Films,2004,182(2/3):227-236.
【7】王东生,田宗军,沈理达,等.TiAl合金表面激光重熔热障涂层组织及抗高温氧化性能[J].功能材料,2009,40(4):578-581.
【8】MCPHERSON R. The relationship between the mechanism of formation, microstructure and properties of plasma-sprayed coatings[J].Thin Solid Films,1981,83(13):297-310.
【9】王东生,田宗军,沈理达,等.等离子喷涂纳米团聚体粉末熔化过程数值模拟[J].中国机械工程,2009,20(4):417-422.
【10】LIMA R S, KUCUK A, BERNDT C C. Bimodal distribution of mechanical properties on plasma sprayed nanostructured partially stabilized zirconia[J].Materials Science and Engineering A,2002,327(2):224-232.
【11】宫文彪,孙大千,孙喜兵,等.等离子喷涂纳米团聚体粉末的熔化特性研究[J].材料热处理学报,2007,28(4):125-129.
【12】戴遐明,艾德生,李庆丰,等.纳米陶瓷材料及其应用[M].北京:国防工业出版社,2005.
【13】田宗军,王东生,沈理达,等.TiAl合金表面激光重熔陶瓷涂层组织及耐磨性能[J].南京航空航天大学学报,2009,41(3):348-353.
【14】WANG D S, TIAN Z J, SHEN L D,et al. Preparation and characterization of nanostructured Al2O3-13wt%TiO2 coating by plasma spraying[J].Rare Metals,2009,28(5):465-470.
【15】CHEN H, LEE S, ZHENG X,et al. Evaluation of unlubricated wear properties of plasma-sprayed nanostructured and conventional zirconia coatings by SRV tester[J].Wear,2006,260(9/10):1053-1060.
【16】LIMA R S, KUCUK A, BERNDT C C. Evaluation of microhardness and elastic modulus of thermally sprayed nanostructured zirconia coatings[J].Surface and Coatings Technology,2001,135(2/3):166-172.
【17】TOSCANO J, VABEN R, GIL A,et al. Parameters affecting TGO growth and adherence on MCrAlY-bond coats for TBC′s[J].Surface and Coatings Technology,2006,201(7):3906-3910.
【18】CARIM A H, DOBBINS T A, GIANNUZZI L A,et al. Phase distribution in, and origin of, interfacial protrusions in Ni-Cr-Al-Y/ZrO2 thermal barrier coatings[J].Materials Science and Engineering A,2002,334(1/2):65-72.
【19】WANG W Q, SHA C K, SUN D Q,et al. Microstructural feature, thermal shock resistance and isothermal oxidation resistance of nanostructured zirconia coating[J].Materials Science and Engineering A,2006,424(1/2):1-5.
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