Thermal sprayed nickel chromium borosilicate NiCrBSi

       Thermal sprayed nickel chromium borosilicate

NiCrBSi is mainly a Ni-based self-fluxing alloy mainly composed of Ni and Cr. Cr in the alloy mainly improves the high-temperature oxidation resistance and corrosion resistance of the Ni matrix. The excess Cr is easy to form chromium carbide and chromium boride with carbon and boron. Hard phase, thereby improving the hardness and wear resistance of the alloy. B and Si elements can reduce the melting point of the alloy, improve the fluidity of the alloy melt and the wettability with the surface of the substrate, which is mainly due to the strong deoxidation and slagging ability of B and Si. In addition, Si can also play a solid solution strengthening role in the alloy, and B can combine with some elements in the alloy to form a high-hardness intermetallic compound, which plays a role in dispersion strengthening. Therefore, the good corrosion resistance and wear resistance of NiCrBSi coatings have been widely used in the field of surface engineering.