Silicon manganese nitride is mainly composed of manganese nitride and silicon nitride. Moreover, when preparing silicon manganese nitride, the main methods that can be used are vacuum sintering, secondary nitriding, microwave synthesis, high-temperature self-propagating synthesis and normal pressure one-step synthesis. There is room for optimization and improvement in the existing preparation processes. In the future, improvements will be continued in terms of simplifying the operating process, shortening the reaction time, and reducing production costs.
Silicon manganese nitride is a new type of steel additive that has excellent performance and application advantages compared with conventional nitride alloys. Manganese plays a role in deoxidation, desulfurization and alloying in steelmaking. Manganese can eliminate or weaken the thermal brittleness caused by sulfur, thereby improving the hot workability of steel; it can also refine the pearlite grains and improve the strength of pearlitic steel, and can also improve the hardenability of steel. Silicon nitride has high temperature thermal stability, thermal shock resistance, hot and cold shock resistance, chemical stability, good electrical insulation and hardness. Silicon manganese nitride alloy is compatible with the special properties of silicon nitride and manganese nitride, and its performance is even better when silicon, manganese and nitrogen are combined at the same time.
In addition, silicon manganese nitride also has good rapid heat resistance, thermal conductivity, chemical stability and small thermal expansion. Its strong micro-alloying and nitrogen-enhancing effects are particularly effective in grain-oriented silicon steel, HRB400 and above. Rebar and other fields have been widely used and have great market demand.
