摘要:
All-ceramic retroreflective elements which may be used in pavement markings comprising an opacified ceramic core and ceramic optical elements partially embedded into the core.
摘要:
The present invention provides a nearly fully dense, microcrystalline, composite ceramic abrasive particle comprising grains of alumina, gamma-aluminum oxynitride and, optionally, a Periodic Group IVB metal nitride in the system Al.sub.2 O.sub.3 /ALON/Group IVB metal nitride. In another aspect, two different processes for making an abrasive particle such as an abrasive grit, comprising a multiphase mixture of microcrystalline components in this system using sol gel techniques and pressureless reaction-sintering, are disclosed.
摘要翻译:本发明提供了一种几乎完全致密的微晶复合陶瓷磨料颗粒,其在体系Al 2 O 3 / ALON / IVB族金属氮化物中包含氧化铝颗粒,γ-氮氧化铝和任选的第IVB族金属氮化物颗粒。 在另一方面,公开了用于使用溶胶凝胶技术和无压力反应烧结在该系统中制造磨料颗粒如磨粒的两种不同方法,其包括微晶组分的多相混合物。