Glass ceramic composition, substrate for light emitting element, and light emitting device

摘要

To provide a glass ceramic composition with which a substrate for a light emitting element having a high reflectance and a high thermal conductivity can be obtained, and which can suppress breakage at the time of production of the substrate for a light emitting element. A glass ceramic composition to be used for production of a substrate on which a light emitting element is to be mounted, which comprises from 30 to 45 mass % of a glass powder, from 35 to 50 mass % of an alumina powder and from 10 to 30 mass % of a zirconia powder, to the total amount of the glass powder, the alumina powder and the zirconia powder, wherein the average particle size of the zirconia powder is at most ¼ of the average particle size of the alumina powder.

主权项

1. A glass ceramic composition comprising a glass powder, an alumina powder and a zirconia powder having an average particle size of at most ¼ of the average particle size of the alumina powder, in a proportion of the glass powder of from 30 to 45 mass %, a proportion of the alumina powder of from 35 to 50 mass % and a proportion of the zirconia powder of from 10 to 30 mass %, to the total amount of the glass powder, the alumina powder and the zirconia powder.