Material properties of silicon nitride
Silicon nitride is very strong, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It is extremely resistant to high temperatures, and its strength can be maintained until a high temperature of 1200 °C without dropping, and it will not melt into a melt after being heated, and it will not decompose until 1900 °C, and it has amazing resistanceChemical corrosionperformance, ability to withstand almost everythingInorganic acidsand less than 30% caustic soda solution, can also resist the corrosion of many organic acids; At the same time, it is a high-performance electrical insulating material.
Other applications of silicon nitride
Silicon nitride ceramic materials have:Thermal stabilityHigh performance, strong oxidation resistance and high dimensional accuracy of the product. Since silicon nitride is a high bond strengthCovalent compoundsand can form an oxide protective film in the air, so it also has a good Chemical stabilityIt is not oxidized below 1200 °C, and the protective film generated at 1200~1600 °C can prevent further oxidation, and it is not infiltrated or corroded by many molten metals or alloys such as aluminum, lead, tin, silver, brass, nickel, etc., but can be infiltrated or corroded by magnesium,Nichrome, stainless steel and other molten liquids.
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