BORON-CONTAINING AMORPHOUS SILICA POWDER AND METHOD OF PRODUCING SAME
摘要:
Provided is a boron-containing amorphous silica powder more excellent in terms of low temperature sinterability than conventional silica powders. The present invention relates to amorphous silica powder containing boron atoms, the boron-containing amorphous silica powder having an average particle size of 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph, the boron-containing amorphous silica powder having a decrement in a boron content of 10 mass % or less, when fired under the following conditions:

5 to 10 g of a dried product of the boron-containing amorphous silica powder is filled into an alumina crucible, heated in the atmosphere at 200° C./hour to 1000° C. to 1100° C., maintained as it is for 5 hours, and cooled to room temperature.
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