Transactions of the INDIAN CERAMIC SOCIETY Vol. 50 1991
Development of Steatite Based Machinable Ceramic
Insulators for Ultra High Vacuum System
A. K. KULKARNI AND P. Y. DALVI , M. L. BARDE
Pages : 33-37
DOI : 10.1080/0371750X.1991.10804482
Abstract
Developmental work on machinable ceramics was carried out with
compositions containing steatite and pyrophyllite with minor additions
such as barium carbonate and calcium oxide. Cold pressed compacts
of the mixtures of selected constitutents, after seasoning with a
phospho-organic binder and curing at 800°C resulted in a machinable
character. After machining, the samples had the desired electrical
breakdown strength (13 kV/cm) and degassing rate of 1 x to-•
torr.lit.sec-1.cm-•. The roles of raw materials, the type of binder
used and curing temperature on the development of machinable
character of the steatite based ceramic compositions have been
discussed in the present paper.
