Monthly Archives - July 2020

The resonance level improves the thermoelectric properties of germanium telluride

Recently, the team of Professor Zhang Wenqing, Institute of Materials Genome Engineering, Shanghai University, and Professor Jihui Yang, Department of Materials Science and Engineering, University of Washington (click to view the introduction) cooperated with the research team of GeTe thermoelectric materials, following the basic ideas of materials genome science, integrated material calculation, material preparation and material characterization. The first principle method is used to calculate the electron energy band and electron energy state density of GeTe high and low [...]

Preparation of tungsten chloride

This procedure is exactly the same as the preparation of tungsten tetrachloride, but the product cannot contact with air due to its strong hygroscopicity, so it should be fully dried and preserved. Under this reaction condition, there is no protective atmosphere, so it is difficult to ensure that tungsten pentachloride is not decomposed. During refining, the product is put into a hard glass tube and placed in the air of vacuum or nitrogen and carbon dioxide. The glass tube [...]

Preparation and application of titanium nitride

The chemical properties of nitrogen element are very stable, but under some special conditions, it can form nitrides with many elements. Among these nitrides, the transition metal nitrides — Titanium nitride (TiN) has become the focus of research at home and abroad. Titanium nitride is a small wet structural material with attractive gold color, high melting point, high hardness, good chemical stability, and metal, and has high conductivity and superconductivity. It can be used in high temperature structural materials [...]