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Full-Text Articles in Engineering

A Process For Making Refractory Insulating Brick, Albert Lloyd Tetley Jan 1939

A Process For Making Refractory Insulating Brick, Albert Lloyd Tetley

Bachelors Theses

"The object of this study was to investigate the fundamental principles of producing an insulating brick by making the pore structure of air bubbles entrapped in a clay slip. Since a clay water mixture or any material containing entrapped air will loose this air when placed under vacuum, it is thought that placing the clay slips under a pressure would cause a considerable pore structure in the slip when the pressure is released. In the common method of making insulting brick, the fired brick must be ground to size as they cannot be molded to a definite size and shape. …


Effects Of Zirconium Compounds On A Bright Glaze, Stuart Dods Jan 1939

Effects Of Zirconium Compounds On A Bright Glaze, Stuart Dods

Bachelors Theses

"The standard method for producing opacity and to some extend sic mattness in a glaze has always been the use of small amounts of tin oxide. This oxide, however, is very expensive and tends to fluccuate sic in price over a wide range due to world market conditions. The ceramic industry, therefore, has been searching for some substitutes for the tin oxide with some success. At the present time zinc oxide, antimony oxide, and zirconium oxide are used with varying degrees of success as opacifiers. Zirconium oxide and compounds are less soluble than the other oxides previously used. Therefore, it …