Method of sealing a silicon nitride filter

Details Method of sealing a silicon nitride filter Method of sealing a silicon nitride filter

2006-10-10

2006-10-10

Griffin, Steven P. (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Utilizing chemically reactive atmosphere other than air, per...

C264S676000

Reexamination Certificate

active

07118706

ABSTRACT:
A method for sealing a silicon nitride filter having a generally columnar outer shape and a plurality of through-holes mutually parallel to one another, extending between the opposing end surfaces, which comprises selectively packing a composition containing metal silicon particles in the vicinity of the opening of the through-holes to be sealed on each end surface, subjecting the silicon nitride filter to a heat treatment in a nitrogen atmosphere so that the metal silicon particles contained in the composition are nitrided and formed into silicon nitride for sealing.

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