Introduction and application of silicon nitride
Brief introduction of silicon nitride ceramics. Silicon nitride (Si3N4) is a covalently bonded compound that has two crystal types, α-Si3N4 and β-Si3N4. α-Si3N4 is acicular crystal, β-Si3N4 is granular crystal, both belong to hexagonal crystal system. White or off-white α-Si3N4 can be obtained by nitrifying high purity Si at …
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