ChemInform Abstract: Structure and Composition of Interlayers in Joints Between SiC Bodies.
Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract
The microstructure, composition, and mechanical properties of interlayers formed by joining SiC bodies for thermonuclear fusion reactor applications are studied by TEM, AEM, and fracture shear stress tests. Joints, prepared by coating of SiC bodies with a silicone resin (GE SR350) followed by curing at 200 °C and pyrolysis under Ar atmosphere at temperatures ranging from 900 to 1200 °C without or at low pressure, consist of a silicon oxycarbide glass. The flat interface structure and the lack of any reaction layer suggests direct chemical bonding. Addition of SiC or Ti powders to the coating solution has no effect on the bonding strength. Polycarbosilane is not suitable as joining material.
