采用Knoop压痕法评价沉积于镍基单晶高温合金基体上的EB-PVD热障涂层的显微硬度.测试结果表明,热障涂层系统的显微硬度存在压痕尺寸效应,即表观显微硬度随施压载荷的增加而显著降低.用弹/塑性模型Knoop压痕能量平衡对表观压痕尺寸效应进行分析,并从实验测试结果分析得出与载荷无关的显微硬度值.
参考文献
| [1] | Fritscher K.Advanced Aerospace Materials[M].Berlin:Springer-Verlag,1992:84. |
| [2] | Hu W.;Sun X.;Li S.;Guan H. .Graded coatings prepared by plasma spraying with Ni-coated ZrO2 powders[J].Surface & Coatings Technology,1998(1/2):102-108. |
| [3] | Lima RS.;Kucuk A.;Berndt CC. .Bimodal distribution of mechanical properties on plasma sprayed nanostructured partially stabilized zirconia[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(2):224-232. |
| [4] | Li H;Bradt R C .[J].Journal of Materials Science,1996,31:1065. |
| [5] | Goken M.;Kempf M. .Microstructural properties of superalloys investigated by nanoindentations in an atomic force microscope[J].Acta materialia,1999(3):1043-1052. |
| [6] | Elmustafa A A;Eastman J A;Rittner M N et al.[J].Scripta Materialia,2000,43:951. |
| [7] | Goken M;Kempf M;Nix W D .[J].Acta Materialia,2001,49:903. |
| [8] | Atkinson M. .Phenomenology of the size effect in hardness tests with a blunt pyramidal indenter[J].Journal of Materials Science,1998(11):2937-2947. |
| [9] | Li H;Bradt R C .[J].Materials Science and Engineering A,1991,142:51. |
| [10] | 龚江宏;关振铎 .[J].硅酸盐学报,1995,23(03):308. |
| [11] | Ikeda K;Igaki H .[J].Journal of the American Ceramic Society,1987,70C:29. |
| [12] | Petrovic J J .[J].Journal of the American Ceramic Society,1983,66:277. |
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