Compositions: ceramic – Ceramic compositions – Refractory
Patent
1995-10-13
1997-10-28
Marcantoni, Paul
Compositions: ceramic
Ceramic compositions
Refractory
501105, 501153, 252520, 252521, 204421, 204424, 204425, 204427, 429 33, 429193, C04B 3548
Patent
active
056817843
ABSTRACT:
A ceramic which is thermal shock resistant and which is a sintered, homogeneous mixture of first and second ceramic powders, including a first ceramic powder which is based on at least one tetravalent oxide selected from the group including zirconium dioxide, hafnium dioxide, and thorium dioxide, and which is further composed of at least one stabilizer oxide selected from the group including oxides effective to stabilize the at least one tetravalent oxide; and a second ceramic powder which is based on at least one tetravalent oxide selected from the group including zirconium dioxide, hafnium dioxide, and thorium dioxide, which contains from 0 to 2.5 mole % of at least one stabilizer oxide based on that molar amount of Y.sub.2 O.sub.3, and which has grains whose surface is at least partly covered by a coating effective to inhibit diffusion of cations from the at least one stabilizer oxide during sintering, and wherein the first ceramic powder has a higher stabilizer content than that of the second ceramic powder.
REFERENCES:
patent: 4221650 (1980-09-01), Friese et al.
patent: 4525464 (1985-06-01), Claussen et al.
patent: 4900492 (1990-02-01), Claussen et al.
patent: 5130210 (1992-07-01), Iwasaki et al.
patent: 5296421 (1994-03-01), Nishida et al.
patent: 5326519 (1994-07-01), Claussen
Marcantoni Paul
Robert & Bosch GmbH
LandOfFree
Thermal shock resistant ceramic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal shock resistant ceramic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal shock resistant ceramic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1025947