发明名称 |
METHOD OF PRODUCING GRAPHITE BORON NITRIDE |
摘要 |
FIELD: methods of graphite boron nitride production. SUBSTANCE: method includes preparation of mixture of initial components containing magnesium, boron oxide and 10-20 wt.% of specific addition selected from the series including product of synthesis of born nitride, boron nitride or magnesium oxide; placing of prepared mixture of components into shell from material of specified addition with thickness of its layer mainly equalling 3-5 mm; heat treatment of prepared mixture under conditions of self-propagating high-temperature synthesis under nitrogen pressure of 8-10 MPa; removal of product by treatment of synthesis product in mineral sulfuric acid of 10-26% concentration. In this case, additionally introduced into nitrogen may be ammonia or hydrogen in the amount not in excess of 10 vol%. product of synthesis of boron nitride has not more than 30 wt.% of graphite boron nitride. EFFECT: simplified process and increased yield. 5 cl, 1 tbl
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申请公布号 |
RU2130336(C1) |
申请公布日期 |
1999.05.20 |
申请号 |
RU19980103620 |
申请日期 |
1998.02.20 |
申请人 |
INSTITUT STRUKTURNOJ MAKROKINETIKI RAN |
发明人 |
BOROVINSKAJA I.P.;VERSHINNIKOV V.I.;MERZHANOV A.G. |
分类号 |
B01J3/06;C01B21/064;C01B21/068;(IPC1-7):B01J3/06 |
主分类号 |
B01J3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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