| 纤维氧化处理对SiCsf/SiC复合材料力学性能的影响 |
| |
| 引用本文： | 薛海峰,陈涵,陈诚,郭露村.纤维氧化处理对SiCsf/SiC复合材料力学性能的影响[J].陶瓷学报,2011,32(1):6-10. |
| |
| 作者姓名： | 薛海峰 陈涵 陈诚 郭露村 |
| |
| 作者单位： | 南京工业大学材料科学与工程学院,江苏,南京,210009 |
| |
| 摘 要： | 以Y2O3、Al2O3为烧结助剂,采用无压烧结法制备短碳化硅纤维(2～4mm)增强碳化硅(ShortSiCfiberreinforcedSiCcomposite,SiCsf/SiC)复合材料,研究了纤维氧化处理对SiCsf/SiC复合材料结构及力学性能的影响。采用X射线衍射(XRD)、扫描电镜(SEM)以及力学性能试验机对材料进行结构表征和力学性能测试。结果表明:纤维氧化处理后,复合材料的弯曲强度和断裂韧性均有大幅提高。当纤维含量达到5wt%时,复合材料断裂韧性为5.41MPa.m1/2,与原始纤维增强SiC样品相比,提高了6.5%;与无纤维增强SiC样品相比,提高了27%。扫描电镜显示纤维氧化处理后,纤维与基体结合紧密。
|
| 关 键 词： | SiCsf/SiC复合材料 无压烧结 力学性能 氧化处理 |
EFFECTS OF OXIDATION TREATMENT OF SiC FIBERS ON MECHANICAL PROPERTIES OF COMPOSITE SiCsf/SiC |
| |
| Xue Haifeng,Chen Han,Chen Cheng,Guo Lucun.EFFECTS OF OXIDATION TREATMENT OF SiC FIBERS ON MECHANICAL PROPERTIES OF COMPOSITE SiCsf/SiC[J].Journal of Ceramics,2011,32(1):6-10. |
| |
| Authors: | Xue Haifeng Chen Han Chen Cheng Guo Lucun |
| |
| Affiliation: | Xue Haifeng Chen Han Chen Cheng Guo Lucun(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing Jiangsu 210009,China) |
| |
| Abstract: | SiCsf/SiC(Short SiC fiber reinforced SiC) composites were fabricated by pressless sintering with Y2O3 and Al2O3 as the additives.The effect of oxidation treatment of SiC fibers on the microstructure and mechanical properties were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM) and the measurement of fracture strength and fracture toughness.The results show that after oxidation treatment,the fracture strength and fracture toughness of the composites increased.Composites with 5wt% tre... |
| |
| Keywords: | SiCsf/SiC composites pressless sintering mechanical property oxidation treatment |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
