采用CVI工艺制备了SiC晶须增韧SiC(SiCW/SiC)mini复合材料,研究了其微观结构和力学性能.实验结果表明:SiC晶须的体积分数达到45%～50%,SiCW/SiC mini复合材料的维氏显微硬度平均值为19.04GPa,断裂韧度平均值达到6.51MPa·m1/2.微观结构观察证实SiC晶须的引入在mini复合材料中产生了晶须桥联、晶须拔出、晶须断裂和裂纹偏转等增韧机制,为后续SiCW/SiC复合材料的制备奠定了基础.
参考文献
| [1] | 江东亮 .碳化硅工程陶瓷[J].硅酸盐学报,1978,6(03):176-189. |
| [2] | 江东亮;谭寿洪;佘继红 等.碳化物复相陶瓷及高温等静压氮化表面改性[J].上海化工,1999,18:25-27. |
| [3] | 江东亮 .碳化硅基复合材料[J].无机材料学报,1995,10(02):151-163. |
| [4] | BECHER P F;HSUEH C H;ANGELINI P et al.Toughening Behavior in Whisker-Reinforced Ceramic Matrix Composites[J].Journal of the American Ceramic Society,1988,71(12):1050-1061. |
| [5] | EVANCE A G .Perspective on the development of high-toughness ceramics[J].Journal of the American Ceramic Society,1990,73(02):187-206. |
| [6] | Becher PF.;Plucknett KP.;Alexander KB.;Hsueh CH.;Lin HT. Waters SB.;Westmoreland CG.;Kang ES.;Hirao K.;Brito ME.;Sun EY. .Microstructural design of silicon nitride with improved fracture toughness: I, effects of grain shape and size[J].Journal of the American Ceramic Society,1998(11):2821-2830. |
| [7] | EVANS A G;HE M Y;HUTCHINSON J W .Effects of Non-Planarity on the Mixed Mode Fracture Resistance of Bimaterial Interfaces[J].Acta Metallurgica,1989,37(03):909-916. |
| [8] | BECHER P F;HORTON J A .Microstructure and fracture toughness of powder-processed Al3Nb[J].Journal of Materials Research,1988,3(06):1272-1276. |
| [9] | LIN G Y .Microstructure and Mechanical Properties of SiC Whiskers Reinforced ZrO2 (6mol%Y2O3) Composites[J].Journal of Materials Science and Technology,1993,9:659-664. |
| [10] | BECHER P F .Microstructural Design of Toughened Ceramics[J].J Amer J Amer Ceram Soc,1991,74(02):255-269. |
| [11] | 林广涌,吴柏源,雷廷权.ZrO2增韧Al2O3/SiCw陶瓷复合材料研究[J].华南理工大学学报（自然科学版）,1996(07):83. |
| [12] | R. Naslain;R. Pailler;X. Bourrat .Processing of Ceramic Matrix Composites by Pulsed-CVI and Related Techniques[J].Key engineering materials,1999(159/160):359-366. |
| [13] | Mahfuz H.;Wilks F.;Maniruzzaman MD.;Jeelani S.;Zadoo DP. .FRACTURE AND FLEXURAL CHARACTERIZATION OF SICW/SIC COMPOSITES AT ROOM AND ELEVATED TEMPERATURES[J].Journal of Materials Science,1995(9):2406-2411. |
| [14] | 冯春祥;黄凯兵;张长瑞 等.聚碳硅烷化学转化制备SiCw/SiC复合材料的研究[J].高技术通讯,1994,4(06):29-33. |
| [15] | GIUSEPPE Magnani;LEANDRO Beaulardi;LUIGI Pilotti .Properties of liquid phase pressureless sintered silicon carbide obtained without sintering bed[J].Journal of the European Ceramic Society,2005,25(09):1619-1627. |
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%