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发明公开
CN104944960A 一种前驱体转化法制备含乙酰丙酮铁硅碳氮陶瓷的方法 失效 - 权利终止

一种前驱体转化法制备含乙酰丙酮铁硅碳氮陶瓷的方法
摘要：
本发明涉及一种前驱体转化法制备含乙酰丙酮铁硅碳氮陶瓷的方法，包括以下步骤：(1)将聚硅氮烷、α-甲基丙烯酸、过氧化二异丙苯混合均匀，得混合溶液；(2)将混合溶液在固化；(3)将固化所得的物料粉碎球磨；(4)将粉料与乙酰丙酮铁混合均匀；(5)将混合均匀的粉料预压成型，得生坯；(6)将生坯在1000℃～1400℃的温度进行热解/烧结，保温，即得。本发明所得材料高温性能好，引入乙酰丙酮铁会提高SiCN陶瓷显气孔率，降低其体积密度，显著提高SiCN陶瓷的微波吸收性能，提高电磁波衰减系数。
摘要（英）：

The invention relates to a method for preparing ferric acetylacetonate-containing silicon carbonitride ceramic by a precursor conversion method. The method comprises the following steps: (1) uniformly mixing polysilazane, alpha-methacrylic acid and dicumyl peroxide to obtain mixed solution; (2) solidifying the mixed solution; (3) crushing and ball-milling the solidified material; (4) uniformly mixing the powder and ferric acetylacetonate; (5) prepressing and shaping the uniformly mixed powder to obtain a green body; (6) pyrolyzing/sintering the green body at a temperature of 1000-1400 DEG C, and insulating to obtain the ferric acetylacetonate-containing silicon carbonitride ceramic. The material obtained by the method disclosed by the invention is good in high-temperature performance, and the introduced ferric acetylacetonate increases the apparent porosity of SiCN ceramic, reduces the volume density of the SiCN ceramic, remarkably improves the microwave absorption performance of the SiCN ceramic, and increases the electromagnetic wave attenuation coefficient.

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