THERMAL STABILITY TESTING APPARATUS FOR STRUCTURAL CERAMICS Russian patent published in 2003 - IPC

FIELD: structural ceramics testing equipment. SUBSTANCE: apparatus has support made in the form of two cylinders with central conical openings axially aligned with cone bases and arranged opposite one another. Notched prismatic sample is fixed in support. One cylinder is rigidly fixed and other movable cylinder is arranged in spring-loaded position. Support is located inside tube in the vicinity of its end. Cooling radiator is tightly put onto tube side surface. Inlet and outlet slots for refrigerant flow are formed in side surface of tube in the vicinity of sample fixing site. Tube with sample support is introduced and withdrawn from heated furnace through pipe union into opening in furnace wall by longitudinal displacement of radiator along guiding trough. Refrigerant flow is supplied transverse to apex of notched part in heated sample. EFFECT: reduced scattering of measured thermal stability characteristic values, reduced time and heat losses during testing. 3 cl, 3 dwg, 1 tbl, 3 ex