“优质α－Ａｌ_２Ｏ_３微粉制备技术的研究”通过国家级鉴定我院和开封特种耐火材料公司共同承担的国家八五重点攻关项目“优质ａ－ＡＩ。Ｏ。微粉制备技术的研究”于１９９４年３月１４日在河南省开封市通过了国家计科委和冶金部的技术鉴定。本课题成功地运用了微晶转相... “High quality α-Al 2 O 3 micropowder preparation technology” through the national identification of our hospital and Kaifeng special refractories company shared key national eight five key research project “a-AI.O. fine powder preparation technology research” in 1994 3 On the 14th in Kaifeng City, Henan Province, it passed the technical appraisals of the State Planning Commission and the Ministry of Metallurgy. The subject of the successful use of micro-crystal phase ...