HF-RESISTANT CERAMICS AND USE THEREOF

摘要

Hydrogen fluoride-resistant articles are disclosed which have HF contact surfaces consisting essentially of sintered, single phase polycrystalline, solid solution alumina and magnesia ceramic. The ceramic has a magnesia content equal to or less than the solubility limit of magnesia in alumina at the sintering temperature for the ceramic. Also disclosed are processes using such surfaces as HF contact surfaces.