Method of sealing a silicon nitride filter
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United States of America Patent
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Oct 10, 2006
Grant Date -
Dec 12, 2002
app pub date -
May 8, 2002
filing date -
May 11, 2001
priority date (Note) -
Expired
status (Latency Note)
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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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