| Si_3N_4结合的SiC耐火材料的表面氧化处理 |
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| 引用本文： | 张广荣,韩华云,张伟民,王同春.Si_3N_4结合的SiC耐火材料的表面氧化处理[J].东北大学学报(自然科学版),1992(2). |
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| 作者姓名： | 张广荣 韩华云 张伟民 王同春 |
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| 作者单位： | 东北工学院化学系
(张广荣，韩华云，张伟民)，东北工学院化学系(王同春) |
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| 摘 要： | 对 Si_3N_4 结合的 SiC 耐火材料进行了表面氧化技术的探索。研究表明:Si_3N_4 的氧化趋势大于 SiC;适当地表面氧化处理,能使材料强度得到提高,但氧化时间过长,可能引起材料表面损伤;在一定条件下,材料气孔率愈大,强度提高愈显著;给出了该材料合理的配方和进行表面氧化处理应注意的问题。
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| 关 键 词： | 氮化硅 碳化硅耐火材料 表面氧化处理 表面缺陷 扩散速率 材料强度 |
Surface Oxidation Treatment for Si_3N_4-Bonded SiC Refractory |
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| Zhang Guangrong,Han Huayun,Zhang Weimin,Wang Tongchun.Surface Oxidation Treatment for Si_3N_4-Bonded SiC Refractory[J].Journal of Northeastern University(Natural Science),1992(2). |
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| Authors: | Zhang Guangrong Han Huayun Zhang Weimin Wang Tongchun |
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| Institution: | Zhang Guangrong;Han Huayun;Zhang Weimin;Wang Tongchun |
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| Abstract: | The surface oxidation treatment for Si_3N_4-bonded SiC refractory was investi-gated and the results were obtained as follows. Si_3N_4 is liable to be oxidizedmore than SiC. Material strength can be greatly improved through properlytreating in surface oxidation, however, surface damage may be caused if along-period oxidation applies to. The greater the porosity is, the higher thestrength will be under certain conditions. Reasonable ingredient is given tothe refractory, as well as some cautions in surface oxidation treatment. |
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| Keywords: | silicon nitride SiC refractory surface oxidation treatments surface defect diffusion rates material strength |
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