CAJ | 학술논문

采用共沉淀法制备掺钬氟化钇钡[分子式:Ho:BaY2F8,简称Ho:BYF]粉体,确定了粉体制备的最佳工艺条件.以NH4F溶液为沉淀剂,EDTA为螯合剂,乙二醇为分散剂,采用顺序滴定法,获得Ho:BaY2F8前驱体.对前驱体在不同温度下进行烧结,并采用XRD,FI-IR,TG—DTA和SEM测试手段对样品进行表征与分析.结果表明,前驱体在550℃左右开始由CaF2型(立方相)向单斜相转变;最佳烧结温度为650℃,粉体尺寸约100nm.
채용공침정법제비참화불화을패[분자식:Ho:BaY2F8,간칭Ho:BYF]분체,학정료분체제비적최가공예조건.이NH4F용액위침정제,EDTA위오합제,을이순위분산제,채용순서적정법,획득Ho:BaY2F8전구체.대전구체재불동온도하진행소결,병채용XRD,FI-IR,TG—DTA화SEM측시수단대양품진행표정여분석.결과표명,전구체재550℃좌우개시유CaF2형(립방상)향단사상전변;최가소결온도위650℃,분체척촌약100nm.
Holmium-doped yttrium barium fluoride powder was obtained by co-precipitation method,[Formula:Ho:BaY2F8, referred Ho:BYF], and the optimum technological conditions of powder preparation was decided. The NH4F solution as precipitating agent, EDTA as chelating agent, ethylene glycol as a dispersing agent, Ho:BYF precursor was obtained with sequential. The precursor for sintering at different temperatures,and the testing and analysis of sam-ples were characterized by XRD,FI-IR,TG-DTA and SEM. The results showed that the precursor at about 550 ℃start transformation from CaF2 (cubic phase) to monoclinic phase, the optimum sintering temperature is 650 ℃, the powder size of about 100nm was got.