Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1992-08-10
1994-01-04
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
26417711, 26417712, 26421111, 26421113, 264234, 264340, 264345, C04B 4100
Patent
active
052757714
ABSTRACT:
A reduced coefficient of thermal expansion and an increased resistance to thermal shock in cordierite-containing ceramic articles is achieved by contacting such articles with water either in a liquid or gaseous state. It is particularly desirable for such treatment to reduce the coefficient of thermal expansion of the article by at least 1.times.10.sup.-7 .degree. C..sup.-1, measured between 25.degree. and 800.degree. C., during the contacting. This treatment can be used in conjunction with extruded honeycomb structures conventionally used as diesel particle filters and supports for catalysts which treat automotive exhaust gases.
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Bush Edward A.
Frost Rodney I.
Corning Incorporated
Derrington James
Goldman Michael L.
Wardell Richard N.
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