| ZrB2–SiC多层陶瓷的抗氧化性 |
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| 引用本文： | 左凤娟,成来飞,张立同.ZrB2–SiC多层陶瓷的抗氧化性[J].硅酸盐学报,2012,40(8):1174-1178. |
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| 作者姓名： | 左凤娟 成来飞 张立同 |
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| 作者单位： | 西北工业大学,超高温结构复合材料国家重点实验室,西安710072 |
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| 摘 要： | 用传统陶瓷的流延工艺制备ZrB2–SiC多层陶瓷。用Archimedes法测定ZrB2–SiC多层陶瓷的相对密度。用扫描电子显微镜观察其显微结构,并进行循环抗氧化性能评价。结果表明：ZrB2–SiC多层陶瓷在1 950℃烧结的致密度达到99.7%,材料的抗氧化过程主要可分为两个阶段：第一阶段低熔点相的挥发,出现质量损失;第二阶段氧化层的形成,降低进一步氧化速率。抗氧化性能较ZrB2–SiC复相陶瓷有很大提高。
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| 关 键 词： | 流延 硼化锆–碳化硅多层陶瓷 热压烧结 抗氧化 |
Oxidation Resistance of ZrB2-SiC Multilayer Ceramics |
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| ZUO Fengjuan,CHENG Laifei,ZHANG Litong.Oxidation Resistance of ZrB2-SiC Multilayer Ceramics[J].Journal of The Chinese Ceramic Society,2012,40(8):1174-1178. |
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| Authors: | ZUO Fengjuan CHENG Laifei ZHANG Litong |
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| Affiliation: | (National Key laboratory of Thermostructure Composite Material,Northwestern Polytechnical University,Xi’an 710072,China) |
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| Abstract: | ZrB2-SiC multilayer ceramic was prepared by a coneventional ceramic tape casting technology.The density was measured using the Archimede method.The microstructure of samples was observed by scanning electron microscopy.The oxidation resistance of ZrB2-SiC multilayer ceramics was also determined.The results indicate that for the product sintered at 1 950 ℃,the relative den-sity is 99.7%.During the oxidation process of this material,the low melting phase is firstly volatilized,and then the oxidation layer is formed,which can diminish the further oxidation.The oxidation resistance of ZrB2-SiC multilayer ceramic was better than that of ZrB2-SiC monolithic ceramics. |
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| Keywords: | tape casting zirconium diboride-silicon carbide multilayer ceramic hot pressing oxidation resistance |
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