Manufacture of silicon nitride powder

Details Manufacture of silicon nitride powder Manufacture of silicon nitride powder

1972-03-14

1976-02-10

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

23277R, C01B 2106

Patent

active

039377920

ABSTRACT:
A method of manufacturing a silicon nitride powder comprises heating a bed of silicon powder in a furnace having an atmosphere containing nitrogen so that the silicon reacts with the nitrogen to produce silicon nitride. The exothermic reaction between the silicon and the nitrogen is monitored, either by comparing the temperature in the reaction bed with the temperature at another point in the furnace, or by allowing the nitrogen containing atmosphere to flow through the furnace and measuring the rates of flow of the atmosphere into and out of the furnace. The partial pressure of the nitrogen in the furnace atmosphere is then controlled in accordance with the exothermic reaction so as to ensure that the temperature in the bed does not exceed a predetermined value above which .beta.-phase silicon nitride is formed, the partial pressure of the nitrogen in the furnace being controlled by effecting at least one of the steps of:

REFERENCES:
patent: 2330767 (1943-09-01), Welty, Jr.
patent: 2519481 (1950-08-01), Kubie et al.
patent: 2788264 (1957-04-01), Bremer et al.
patent: 3222438 (1965-12-01), Parr et al.
patent: 3591337 (1971-07-01), Lumbey

Affiliated with

Also associated with

Rating

Manufacture of silicon nitride powder does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-150255