Film for electronic cooling device, the function of the diamond coating and other high purity requirements

However, with the application of ultra-fine diamond depth study of the rising demand for its purity, in certain applications, its impurities (mainly refers to graphite, amorphous carbon, silicon compounds and certain metal elements) content very strict requirements, such as thermal coating for electronic devices, functional coating and other high purity requirements of the diamond, the presence of  polycrystalline diamond  may affect device performance, stability and longevity; ultra-fine polishing in the field, there is also the purity of the diamond high demand, the presence of  grinding wheel  reduce the overall hardness of the diamond, and so affect the polishing rate. Our country is the largest producer of synthetic diamond, a large number of low-quality diamond powder, this powder contains a small amount of non-diamond carbon, silicon compounds, and certain metals and other impurities, requires further purification.