GLASS-CERAMICS COMPOSITE MATERIAL

摘要

An easily-administered technology which demonstrates the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) and makes it possible to sufficiently raise the thermal conductivity of a glass-ceramics composite material is provided. In the glass phase which constitutes a glass-ceramics composite material, the quantity of aluminum oxide (Al2O3) component is increased under a condition where at least either of zinc oxide (ZnO) component or magnesium oxide (MgO) component exists in a predetermined quantity or more. Thereby, the unintended reaction between a non-oxide system compound crystal phase and a glass phase can be suppressed, and the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) can be demonstrated.

主权项

1. A glass-ceramics composite material obtained by firing:
a glass phase which comprises aluminum oxide (Al2O3), at least either of magnesium oxide (MgO) or zinc oxide (ZnO), silicon oxide (Si02), and boron oxide (B2O3) as main components, and at least one kind of non-oxide system compound crystal phase chosen from the group of aluminum nitride (AlN), silicon carbide (SiC), and silicon nitride (Si3N4), wherein; based on the total amount of said glass phase,
the composition rate of aluminum oxide (Al2O3) is not less than 16 mass % and is 40 mass % or less,the composition rate of magnesium oxide (MgO) is not less than 13 mass % and 31 mass % or less, or the composition rate of zinc oxide (ZnO) is not less than 15 mass %, and 40 mass % or less, andthe composition rate of silicon oxide (SiO2) is not less than 15 mass and is 60 mass % or less, and based on the amount of sum total of said glass phase and said non-oxide system compound crystal phase,
the composition rate of said non-oxide system compound crystal phase is not less than 20 mass % and is 60 mass % or less when said non-oxide system compound crystal phase comprises aluminum oxide (Al2O3) or silicon carbide (SiC), and the composition rate of said non-oxide system compound crystal phase is not less than 35 mass % and is 60 mass % or less when said non-oxide system compound crystal phase is silicon nitride (Si3N4).