公开(公告)号：WO1980000080A1

公开(公告)日：1980-01-24

申请号：PCT/US1979000407

申请日：1979-06-13

Applicant: GTE LABOR INC

Inventor： GTE LABOR INC ,  QUACKENBUSH C ,  SMITH T

IPC: C04B35/58

CPC classification number: C04B35/584 ,  C04B35/593

Abstract: The addition of controlled amounts of Al uO u to high purity Si uN u powder (containing less than 0.1 weight percent cation impurities and containing Y uO u as a densifying additive) enables shorter sintering times to achieve polycrystalline Si uN u bodies having densities approaching theoretical density, while a postsintering crystallization heat treatment results in strengths at high temperatures not otherwise obtainable in the presence of Al uO u. Resulting Si uN u bodies are useful as engine parts and components or a regenerator or recuperator structures for waste heat recovery. In addition, such Si uN u bodies containing Al uO u exhibit good oxidation resistance.

Abstract translation: 将受控量的Al u u加入到高纯度的Siuuu粉末（含有小于0.1重量％的阳离子杂质并含有Y u u u u）作为 致密化添加剂）能够缩短烧结时间以获得具有接近理论密度的密度的多晶Si体，同时后处理结晶热处理在高温下产生强度，否则在AlO 2存在下可获得 Ú。 所产生的Si u u u u u体可用作发动机部件和部件，或用于废热回收的再生器或换热器结构。 此外，这样的含有u u u u的这些Si元素显示出良好的抗氧化性。