C_f/ZrC-SiC复合材料抗氧化性能及机理分析  

Oxidation Resistance Properties and Mechanism of C_f/ZrC-SiC Composites

作　　者：马妍[1] 王英姿[1] 李庆刚[1,2] 王志[1] 史国普[1] 吴超[1] 

机构地区：[1]济南大学材料科学与工程学院,山东济南250022 [2]济南大学山东省建筑材料制备与测试技术重点实验室,山东济南250022

出　　处：《济南大学学报（自然科学版）》2014年第2期123-126,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(51372099);济南大学博士基金(XBS1310)

摘　　要：采用有机前驱体转化法制备C f/ZrC-SiC复合材料,探讨其抗氧化性能及机理,研究界面、氧化时间及氧化温度对材料抗氧化性能的影响。结果表明,有PyC沉积层的复合材料的抗氧化性能最好,纤维表面的玻璃相明显较多,能更好地保护纤维不被氧化;随着氧化时间(10 min、15 min和30 min)和氧化温度(1 500℃、1 600℃和1 700℃)的增加,玻璃相逐渐增加,材料表面被氧化形成的ZrO2和SiO2覆盖,能阻止外部氧的进入,提高材料的抗氧化性能。Cf/ZrC-SiC composites were fabricated by the organic precursor conversion method. The oxidation resistance properties were studied in detail and the mechanism was discussed. The effects of interphase, oxidation time, and oxidation temperature on the oxidation resistance properties of Cf/ZrC-SiC composites were investigated. Results show the composite with PyC interphase has the best oxidation resistance properties. On the surface of fibers there is more glass phase, which can protect fibers from oxidation. With the increasing of oxidation time （ 10 min, 15 min and 30 min） and oxidation temperature （ 1 500℃, 1 600 ℃ and 1 700 ℃ ） ,the oxidation resistance properties are improved due to the glass mixture of ZrO2 and SiO2, which can prevent external oxygen entrance.

关 键 词：C F ZrC-SiC复合材料 抗氧化性能 机理分析 

分 类 号：TU528.1[建筑科学—建筑技术科学]