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Silicon nitride is an inorganic substance. There are three crystal structures: α,β, and γ three-phase. α and β Two phases are the most common type of Si3N4 and can be prepared under normal pressure γ The phase can only be synthesized under high press…
Silicon nitride is used as high-grade refractory material, such as SI3N4-SIC refractory combined with sic for blast furnace shaft and other parts…
The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…
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