Compositions: coating or plastic – Coating or plastic compositions – Marking
Patent
1975-05-19
1977-08-16
Bashore, S. Leon
Compositions: coating or plastic
Coating or plastic compositions
Marking
106 398, 65 33, B26B 728, C03B 3200
Patent
active
040424030
ABSTRACT:
This invention relates to the production of glass-ceramic articles in the Li.sub.2 O--MgO--Al.sub.2 O.sub.3 --SiO.sub.2 system nucleated with TiO.sub.2, and, optionally, ZrO.sub.2 which, containing beta-spodumene solid solution as the predominant crystal phase, exhibit average coefficients of thermal expansion over the range of 25.degree.-1000.degree. C. of less than about 15 .times. 10.sup.-.sup.7 /.degree. C. and total elongations after 2000 hours at 950.degree. C. of less than about 1000 PPM. The compositions are especially useful in the manufacture of honeycomb structures which are to be subjected to extreme changes in temperature, such as are experienced in regenerative heat exchangers for use in turbine engines.
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patent: 3907577 (1975-09-01), Kiefer
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patent: 3977886 (1976-08-01), Muller
Bashore S. Leon
Corning Glass Works
Janes Jr. Clinton S.
Miga Frank W.
Patty, Jr. Clarence R.
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