To probe balance between room-temperature plasticity and high-temperature strength of Nb-Si based alloys, Nb-15W-5Si-2B-xHf(x=0,5,10,15 at%)alloys with an NbSS-dominant microstructure were developed, and the effects of Hf addition on the microstructure and mechanical properties of Nb-5Si-15W-2B-xHf at room-temperature and high-temperature were investigated and compared.

The effect of trace addition of RE on high-temperature strength and microstructure of ZL109 piston alloy was investigated by means of Tensile Testing, SEM, EPMA, etc.

MSP testing has been used to evaluate high-temperature mechanical properties of MoSi_2 based composites including high-temperature strength,brittle-to-ductile transition temperature and creep resistance.

Before the marked self-reduction of the pellets at 1 000 ℃,the high temperature strength depends on organic binder; and after that,on reduced metallic iron.

The detailed contrast of E309L with E309Nb regarding their chemical components, mechanical properties, anti intergranular corrosion, anti thermal cracks, high temperature strength and e.

Research and development work for increasing the high temperature strength of sapphire is a major problem with sapphire in high-speed or high-temperature applications.

Dielectric constant and loss as well as high temperature viscosity and crystallization temperature were determined.

The viscosity of the glaze at high temperature is measured in detail,the influence upon the high temperature viscosity is studied when the composition of the glaze is changed.