Cr2W3O12, one of the members negative thermal expansion family A2M3O12, is reported to be prepared by solid-state method with Cr2O3 and WO3, which was impossible before. Here, synthesis Cr2W3O12 carried out sintering. The powder mixture WO3 obtained using Zn(CH3COO)2 · 2H2O as catalyst. When (0–25 mol. %) added 15 20 % excess much formed especially because addition 10 2H2O. For comparison, comm...

Electrical methods for thermal characterization, like 3ω method, micro-bridge method and TET method have been widely used in the thermal property measurement, while always been limited by the electrical conductance of samples or other temperature dependent thermal resistors. As an optical method, Raman thermometry has been developed and broadly applied in thermal characterization in recent year...

The accurate value of thermal expansion coefficient ( ) of thin film is an important thermal property in the design of microelectronic devices and microsystem. This research presents a microbridge buckling deformation caused by the residual stresses to determine the of thermal oxide (SiO2) film. The extraction of is supported through experimental means and finite element analysis (FEM) of the b...

In this study, thermal fatigue properties of 400 series ferritic stainless steels have been evaluated in the temperature ranges of 200-800C and 200-900C. Systematic methods for control of temperatures within the predetermined range and measurement of load applied to specimens as a function of temperature during thermal cycles have been established. Thermal fatigue tests were conducted under ful...