Effect of ceramic binders on microwave dielectric loss of alumina
Source: British Ceramic Transactions, Volume 99, Number 5, May 2000 , pp. 212-214(3)
Publisher: Maney Publishing
Abstract:Several binders have been evaluated to determine their effect on high frequency dielectric loss. Alumina ceramics have been powder pressed with different binder levels, sintered, and then the dielectric loss (tan = Q-1) has been measured at approximately 9·5 GHz. The quality factor Q was determined and significant differences were observed between samples made with different binders. The differences are caused by the different levels of residual porosity left by the different binders. In addition, differences in levels of impurities in the binders may also influence Q. Selected samples were measured for green body strength as a function of binder content.
Document Type: Regular Paper
Affiliations: 1: The Department of Physical Electronics and Materials, South Bank University, 103 Borough Road, London, SE1 0AA, UK 2: VZS Seagoe Advanced Ceramics, 35–37Cavendish Way, Southfield Industrial Estate, Glenrothes, KY6 2SB, Fife, Scotland
Publication date: 2000-05-01