Abstract: Novel ceramic whiteware bodies, glazes and compositions for the bodies and energy efficient processs for the fabrication of the bodies are described.The whiteware bodies contain a matrix of a low melting alkali phosphate frit having quartz particles dispersed therein as a filler material. Typically, a composition comprising from about 50% by weight to about 80% by weight of particulate quartz filler and from about 20% by weight to about 50% by weight of an alkali phosphate frit is heated to within a temperature range from about the softening temperature of the alkali phosphate frit to about 600.degree. C. Thereafter, the body is fabricated either by sintering the composition within the indicated temperature range for a period of time from about 0.1 hours to about 10 hours or by hot forging the composition within the indicated temperature range.The novel glaze of the invention comprises an alkali phosphate frit and optionally modifying materials such as opacifiers, pigments and the like.
Abstract: Terra sigillata coated ceramic cookware vessels, such as bread pans. Bread baked in such pans has the taste and physical qualities of bread baked in a brick oven. In addition, the baked bread releases easily from the pan.
Type:
Grant
Filed:
April 27, 1977
Date of Patent:
September 18, 1979
Assignee:
Alfred University Research Foundation, Inc.
Inventors:
William B. Crandall, Linda J. Wasserstein
Abstract: A method for baking bread in a sigillata coated ceramic cookware vessels, such as bread pans. Bread baked in such pans has the taste and physical qualities of bread baked in a brick oven. In addition, the baked bread releases easily from the pan.
Type:
Grant
Filed:
August 21, 1978
Date of Patent:
July 24, 1979
Assignee:
Alfred University Research Foundation Inc.
Inventors:
William B. Crandall, Linda J. Wasserstein
Abstract: Non-porous, Alfred shale terra sigillata coated ceramic utensils, such as cooking pans, pots, plates, cups and heating and serving dishes, having non-sticking food-contacting surfaces are provided for use in the preparation and/or serving of foodstuffs. The ceramic utensils comprise a ceramic body and an Alfred shale terra sigillata coating on said body, both body and coating preferably being made from Alfred shale.
Type:
Grant
Filed:
February 1, 1978
Date of Patent:
May 22, 1979
Assignee:
Alfred University Research Foundation, Inc.
Inventors:
William B. Crandall, Linda J. Wasserstein