Process for making silicon nitride whisker

Details Process for making silicon nitride whisker Process for making silicon nitride whisker

C - Chemistry, Metallurgy

01

B

23/195

C01B 21/068 (2006.01) C30B 25/00 (2006.01)

Patent

CA 2000457

Silica powder or a mixture of silica powder and silicon nitride whisker are heated at a temperature ranging from 800°C to 1,700°C in a gaseous mixture of ammonia gas (NH3) and hydrocarbon gas (CmHn) so as to produce silicon nitride whisker. The gaseous mixture flows at the rate of 10 mm/sec or less. The ratio of the ammonia to the hydrocarbon expressed as NH3/CH4 ranges from 0.5:1 to 2000:1 by volume. The silica powder is preferably mixed with at least one of six catalysts: transition metals; alkali metals: alkaline earth metals: halides of transition metals; halide; of alkali metals; and alkaline earth metals. One mol part of the silica powder is mixed with 0.001 - 1.0 mol part of the catalyst.

Affiliated with

Also associated with

Rating

Process for making silicon nitride whisker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making silicon nitride whisker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making silicon nitride whisker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1878055