Advances have been made in the study of new nano coatings

China Paint Online News Information, reporters from the Zhejiang Provincial Science and Technology Department was informed that, after more than three years of efforts, the Chinese Academy of Sciences Ningbo Materials undertook the Zhejiang Natural Science Foundation funded project - V-Si-N nano-composite hard coating self-tissue growth and high temperature self-lubrication behavior research achieved phased results, is expected to replace the mainstream PVD (physical vapor deposition method) coating technology in the near future.
Three years ago, with the co-financing of Zhejiang Natural Science Foundation and others, Ningbo Materials put forward a new idea for the strengthening of the nanostructure of lubrication coating and designed the V-Si-N nanocomposing coating in view of the deficiency of the existing hard coating improvement method. V-Si-N nanocomposed coatings are very wear resistant and have a wear rate comparable to the best data reported on nano-multi-layer coatings and carbon-based coatings. In recent months, the research team has been working on the application of V-Si-N nanocomposing coatings and conducting high-precision cutting tests of stainless steel with a company outside the province. The test results show that the advantages of this coating are obvious, not only the tool life is long, but also the surface finish of the machined work piece is good (up to 8 levels), high precision.
It is understood that PVD technology appeared in the late 1970s, prepared films with high hardness, low friction coefficient, good wear resistance and chemical stability and other advantages, initially in the field of high-speed steel tools successful application has attracted the world's manufacturing industry attention. The wear rate is the most critical index to evaluate the wear resistance and engineering potential of the coating, in order to reduce the wear rate, domestic and foreign researchers have adopted the idea of introducing more complex coating structure (such as nano-stacking), surface treatment (ABS technology) or complex power supply, but the effect is not obvious.