Aluminium nitride ceramics containing 15—30 w/o of SiC whiskers can be sintered tofull density(by hot pressing at 1800℃)using2—3 w/o of Y<sub>2</sub>O<sub>3</s
In this paper the experimental resultsassociated with the phase separation and nucleation andcrystallization of chalcogenide glasses are described.Experi-ments
The relationships between the microstructure,the composition,the friction temperature andthe form of a new kind of friction materialwhich is a glass fibre resin
The multiple scattering theory has been apowerful tool in determining the effective prop-erties of heterogeneous materials.In this pa-per,a simple relationship