| 摘要 |
<p>Sintered reaction-bonded silicon nitride components, e.g. automotive components, are made by forming a powder mixture comprising silicon an oxide or oxide precursor additives. These additives comprise alumina and a calcium compound. The powder is formed into a preform, the silicon is reacted with nitrogen in a nitriding process to form silicon nitride, and the so-formed silicon nitride is sintered.</p> |
