| 摘要 |
FIELD: ceramic composites for refractory parts, maintaining under extreme conditions. ^ SUBSTANCE: Claimed material is sintered under pressure and contains (mass %): hexagonal boron nitride 45-80 and second material 55-20. The second material represents solid aluminum oxide solution in silicium nitride containing 35 % or less of oxygen. ^ EFFECT: material with low thermal-expansion coefficient, improved rustproof quality and heat resistance. ^ 6 cl, 2 tbl |
