采用Watt型镀镍溶液,恒电流电沉积方法制备Ni/ZrO2梯度镀层.扫描电镜(SEM)测试和X-射线衍射分析表明,沿镀层的生长方向,ZrO2的含量由0逐渐增加到21%(体积分数,下同),呈梯度分布;Ni和ZrO2各自在特定的角度分别出现其衍射特征峰,互不干扰,镀层中ZrO2的含量增高,衍射强度变强断口分析表明,在梯度镀层的内部,材料的塑性变形能力大,韧性最好;沿镀层生长的方向,断口中的韧窝特征逐渐减小,镀层的韧性下降;在表层的断口中ZrO2微粒明显增多,呈团聚状态,基本上没有韧窝特征,镀层的韧性最差.Ni/ZrO2梯度镀层的韧性由外至内逐渐增加,呈梯度分布,其延展性为复合镀层的2.5倍.
参考文献
| [1] | GUO Hetong(郭鹤桐),ZHANG Sanyuan(张三元),Composite Coatings(复合镀层)(Tianjin,Tianjin University Press, 1991) p.53 |
| [2] | M.Koizumi, FGM activities in Japan, Composites Part B: Engineering, 28(1), 1(1997) |
| [3] | J.Ma, G.E.B.Tan, Processing and Characterization of Metal-Ceramics Functionally Gradient Materials,Journal of Materials Processing Technology, 113(1), 446(2001) |
| [4] | A.J.Sánchez-Herencia, R.Moreno, J.R.Jurado, Electrical Transport Properties in Zirconia/Alumina Functionally Graded Materials, Journal of the European Ceramic Society, 20(10), 1611(2000) |
| [5] | A.Moro, Y.Kuroda, K.Kusaka, Development Status of the Reusable High-Performance Engines with Functionally Graded Materials, Acta Astronautica, 50, 427(2002) |
| [6] | ZHENG Ziqiao(郑子樵),LIANG Shuquan(梁叔全),Development and Prospect of Functionally Gradient Materials,Materials Science and Engineering(材料科学与工程),10(1),1(1992) |
| [7] | Jeong-Gu Yeo, Yeon-Gil Jung, Sung-Churl Choi, Design and Microstructure of ZrO2/SUS316 Functionally Graded Materials by Tape Casting, Mater. Letters, 37, 304(1998) |
| [8] | L.D.Teng, F.M.Wang, W.C.Li, Thermodynamics and Microstructure of Ti-ZrO2 Metal-Ceramic Functionally Graded Materials, Mater. Sci. Eng., A, 293, 130(2000) |
| [9] | Yeon-Gil Jung, Chang-Gi Ha, Jong-Ho Shin, Sung-Kang Hur and Ungyu Paik, Fabrication of Functionally Graded ZrO2/NiCrAlY Composites by Plasma Activated Sintering Using Tape Casting and It's Thermal Barrier Property, Mater. Sci. Eng., A, 323, 110(2002) |
| [10] | CUI Yuexian(崔约贤),WANG Changli(王长利),Fracture Analysis of Metals(金属断口分析)(Harbin,Harbin Institute of Technology Press,1998) |
| [11] | ZENG Hualiang(曾华梁),WU Zhongda(吴仲达),QIN Yuewen(秦月文),Electrodeposition Technology Handbook(电镀工艺手册)(Beijing,China Machine Press(SMP),1997)p.762 |
| [12] | FAN Xiong(范雄),X-ray Diffraction of Metals(金属X射线学)(Beijing,Press of Mechanical Industry,1989)p.103 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%