权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

FABRICATION AND PROPERTIES OF OXIDATION RESISTANCE OF C/C COMPOSITE USING BORIDE CERAMICS LAYER

硼化物陶瓷层C/C复合材料的制备及其抗氧化性能

基本信息

批准号：
12650673
负责人：
MATSUSHITA Junichi
金额：
$ 1.66万
依托单位：
TOKAI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650673/
关键词：
C C COMPOSITE SILICON BORIDE OXIDATION OXIDATION RESISTANCE THERMAL ANALYSIS OXIDATION FILM PROTECTION FILM BORATE ホウ化物セラミックスカーボン

项目摘要

Materials endurable for space applications will be required for space advancements. Therefore, the useful ceramic materials is limited in compliance with the characteristic and the conditions of the use are also subdivided. Silicon chemical compound of oxide, carbide and nitride is the useful industrial materials. Several silicon boride phases such as SiB_4, SiB_6, SiB_6+x, SiB_6-x, SiB_<14>, Si_8._<44>B_<305.51> and SiB_<31>, were previously reported. Among them, silicon hexaboride (SiB_6) has proved to be a potentially useful material because of its excellent chemical stability. The carbon fiber reinforced carbon composite (C/C composite) has excellent specific strength at high temperature over 1750 K. Its material has shown use for the application to the fiber and matrix in the C/C composite consists of carbon, which causes its material to oxidation resistance intensely under the presence of oxidation atmosphere at temperature of more than 800 K. We made C/C composite that SiB_6 covered the surface of C/C composite.In this study, the oxidation behavior at high temperature of the SiB_6 powder, SiB_6 sintered body and SiB_6 covered C/C composite were investigated in order to determine its high-temperature utility. The temperature oxidation resistance of the boride covered C/C composite was investigated in order to determine the suitability of this composite for high temperature engineering applications. The aim of this study was to give the resistance oxidation performance to the surface of C/C composite covered with SiB_6 powder were dispersed to a triethyleneglicol using the dipping process in order to coat this sample. The C/C composite samples were obtained with additional mass equal to about 2 to 4 % of the total mass, and surface of its sample was coated with the C/C composite material without its process. The high temperature oxidation resistance of C/C composite drastically improved by covered boride films.

空间进步将需要用于空间应用的耐用材料。因此，有用的陶瓷材料是有限的，符合特点的，也细分了使用条件。氧化物、碳化物和氮化物的硅化合物是用途广泛的工业原料。SiB_4、SiB_6、SiB_6+x、SiB_6-x、SiB_(6-x)、SiB_(14)、SiB_8、SiB_(44)、SiB_(305.51)、SiB_(31)等几种硼化硅相已有报道。其中，六硼化硅(SiB_6)具有良好的化学稳定性，是一种很有潜力的材料。碳纤维增强碳复合材料(C/C复合材料)在1750K以上的高温下具有优异的比强度，它的材料已被应用于由碳组成的C/C复合材料中的纤维和基体，这使得其材料在800K以上的氧化气氛中具有很强的抗氧化能力。研究了渗硼C/C复合材料的抗高温氧化性能，以确定该复合材料在高温工程中的适用性。本研究的目的是研究SiB_6粉末包覆的C/C复合材料表面的抗氧化性能。采用浸渍法制备SiB_6包覆C/C复合材料。获得的C/C复合材料样品的附加质量约为总质量的2~4%，其表面不经过处理就被涂覆了C/C复合材料。渗硼涂层显著提高了C/C复合材料的抗高温氧化性能。