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Infiltration method for silicon carbide-based ceramic with micro-structure characteristics
The invention discloses an infiltration method for silicon carbide-based ceramic with micro-structure characteristics, and belongs to the technical field of near-net forming of ceramic-based compositecomplex parts. According to the technical scheme, a resin mold with a fine structure inside is prepared through a photo-curing rapid forming technology, a ceramic blank is prepared through a gel injection molding method, freeze drying and de-greasing sintering, calcium oxide ceramic slurry is used for filling after the ceramic blank is prepared, siliconizing operation is carried out after fillingis finished, and the resin mold is obtained. Through subsequent hydrolysis of calcium oxide, the silicon carbide ceramic with a compact fine structure and good surface quality can be prepared. According to the method, a good surface state can be obtained on the premise of the fine structure compactness of the prepared silicon carbide ceramic by using a cheap means, so that the post-treatment operation of the siliconized silicon carbide ceramic is saved, and the method has very good practicability.
本发明公开的一种面向带有微结构特征的碳化硅基陶瓷的熔渗方法，属于陶瓷基复合材料复杂零件近净成形技术领域。采用的技术方案为：使用光固化快速成型技术来制备内部具有微细结构的树脂模具，通过凝胶注模方法、冷冻干燥、脱脂烧结制备陶瓷坯体，在制得陶瓷坯体之后使用氧化钙陶瓷浆料进行填充，填充结束后再进行渗硅操作，通过后续氧化钙的水解，可以制得微细结构致密、表面质量良好的碳化硅陶瓷。该方法可用廉价手段在制得碳化硅陶瓷的微细结构致密程度的前提下同时得到良好的表面状态，节约了对渗硅完成的碳化硅陶瓷的后处理操作，具有很好的实用性。
Infiltration method for silicon carbide-based ceramic with micro-structure characteristics
The invention discloses an infiltration method for silicon carbide-based ceramic with micro-structure characteristics, and belongs to the technical field of near-net forming of ceramic-based compositecomplex parts. According to the technical scheme, a resin mold with a fine structure inside is prepared through a photo-curing rapid forming technology, a ceramic blank is prepared through a gel injection molding method, freeze drying and de-greasing sintering, calcium oxide ceramic slurry is used for filling after the ceramic blank is prepared, siliconizing operation is carried out after fillingis finished, and the resin mold is obtained. Through subsequent hydrolysis of calcium oxide, the silicon carbide ceramic with a compact fine structure and good surface quality can be prepared. According to the method, a good surface state can be obtained on the premise of the fine structure compactness of the prepared silicon carbide ceramic by using a cheap means, so that the post-treatment operation of the siliconized silicon carbide ceramic is saved, and the method has very good practicability.
本发明公开的一种面向带有微结构特征的碳化硅基陶瓷的熔渗方法，属于陶瓷基复合材料复杂零件近净成形技术领域。采用的技术方案为：使用光固化快速成型技术来制备内部具有微细结构的树脂模具，通过凝胶注模方法、冷冻干燥、脱脂烧结制备陶瓷坯体，在制得陶瓷坯体之后使用氧化钙陶瓷浆料进行填充，填充结束后再进行渗硅操作，通过后续氧化钙的水解，可以制得微细结构致密、表面质量良好的碳化硅陶瓷。该方法可用廉价手段在制得碳化硅陶瓷的微细结构致密程度的前提下同时得到良好的表面状态，节约了对渗硅完成的碳化硅陶瓷的后处理操作，具有很好的实用性。
Infiltration method for silicon carbide-based ceramic with micro-structure characteristics
一种面向带有微结构特征的碳化硅基陶瓷的熔渗方法
WANG FU (author) / WANG YINGXIN (author) / XU WENLIANG (author) / YANG QIANG (author) / LU ZHONGLIANG (author) / LI DICHEN (author)
2020-12-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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