Aluminum and aluminum alloy matrix aluminum nitride reinforced gradient composite surface layer

Abstract

The invention provides an aluminum and aluminum alloy matrix aluminum nitride reinforced gradient composite surface layer. In the surface layer, aluminum and an aluminum alloy matrix are melted by nitrogen arc with a simple process to ensure that Al and N elements in a melting bath to perform nitridation reaction, namely Al reacts with N to generate AlN, so as to obtain the 'AlN reinforced gradient composite surface layer'. Compared with a thin surface nitridated (AlN) layer prepared by reactive sputtering, chemical vapor deposition, ion injection, plasma nitridation and other methods, the surface layer has large thickness (0.13-0.3mm), has the microstructural characteristic of surface gradient composites, and has remarkably improved microhardness and abrasion resistance compared with the aluminum and the aluminum alloy matrix.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

AI Technical Summary

Benefits of technology

This new method allows for better performance on both surfaces made from different materials compared to previous methods like those described earlier. It involves melting the metal into liquid form before adding another element called ammonia gas, which forms tiny particles containing atoms called atomic hydroxide molecules. These small particles react chemically when exposed to water at high temperatures create strong oxides such as AI2O3. By doing these processes, we get stronger layers without damaging them themselves.

Problems solved by technology

This patents describes various technical problem addressed in these patented documents relating to improving the mechanical property and durability of aluminate and titanium based alkaline cathode batteries (AEC), which use advanced techniques like electrospray coating and cold spargonitization processes. These technologies aim to enhance certain physical characteristics including improved abrasion resistance without compromising its ability to prevent crack initiation during operation.

Images