发明名称 |
Process for preparing silicon, aluminium and magnesium nitrides and oxynitrides with a fibrous morphology based on vermiculite |
摘要 |
Process for preparing silicon, aluminium and magnesium nitrides and oxynitrides with a fibrous morphology based on vermiculite. The subject-matter of the invention is a process for the preparation of a ceramic raw material. In this process the organic molecule of acrylonitrile is intercalated with a phyllosilicate (vermiculite) into which n-butylammonium chloride has previously been intercalated. The intercalated monomer can polymerize between the layers of the phyllosilicate in order to produce a mineral-butyl ammonia polyacrylonitrile phyllosilicate complex. Once the polymer has entered the interlaminar space this precursor is subjected to carbothermic reduction in a flow of nitrogen, producing a ceramic raw material containing silicon, aluminium and magnesium nitrides and oxynitrides (B-sialon, B-silicon nitride, and silicon and magnesium nitride) having a fibrous morphology. The products obtained by the method according to the invention have applications as starting materials for the synthesis of advanced ceramic materials with high thermal and mechanical performance.
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申请公布号 |
ES2080650(A1) |
申请公布日期 |
1996.02.01 |
申请号 |
ES19930001290 |
申请日期 |
1993.06.11 |
申请人 |
CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS |
发明人 |
PEREZ RODRIGUEZ JOSE L.;AVILES ESCANO MIGUEL A.;JUSTO ERBEZ ANGEL J.;SANCHEZ SOTO PEDRO J. |
分类号 |
C04B35/599;(IPC1-7):C04B35/599 |
主分类号 |
C04B35/599 |
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