| 简介 |
FIELD : chemistry.
SUBSTANCE : invention relates to obtaining material, capable of resisting high temperatures in oxidising medium, and can be used in manufacturing construction parts and coatings. Fireproof material contains at least first component, corresponding to hafnium or non-oxide hafnium compound, or their mixture; second component, corresponding to boron, or non-oxide boron compound, or corresponding mixture of boron and non-oxide boron compound; and third component, corresponding to rare earth element RE or non-oxide compound of rare earth element RE, or corresponding mixture of rare earth element RE and non-oxide compound of rare earth element RE, with RE being selected from scandium, yttrium and lanthanides. Said material is capable of forming self-reducing liquid phase in form of rare earth metal oxide at temperature of exploitation higher than 2000°C. Material contains neither silicon nor silicon compound.
EFFECT : preservation of high mechanical properties of parts from fireproof material at temperatures higher than 2000°C and provision of effective protection of parts from oxidation.
9 cl, 9 tbl, 7 dwg |
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