CAJ | 학술논문

以共沉淀-喷雾干燥法制备的Ce0.8 Sm0.2 O1.9(SDC)粉体为原料,模压成型后高温烧结获得SDC电解质陶瓷片.研究模压成型过程中加压时间、压力大小以及烧结温度对烧结体致密度的影响,利用XRD和SEM分别对不同烧结温度获得的烧结体结构和表面形貌进行分析.研究表明,压力30MPa、加压时间30min后获得的坯体,随着烧结温度的升高,烧结体致密度呈上升趋势,烧结温度达到1450℃时进入烧结后期,烧结体具有较高的致密度.此外,通过测定烧结过程中坯体收缩率,对SDC电解质陶瓷片的烧结动力学进行了研究,从而确定SDC电解质致密化的烧结温度为1300～1500℃.
이공침정-분무간조법제비적Ce0.8 Sm0.2 O1.9(SDC)분체위원료,모압성형후고온소결획득SDC전해질도자편.연구모압성형과정중가압시간、압력대소이급소결온도대소결체치밀도적영향,이용XRD화SEM분별대불동소결온도획득적소결체결구화표면형모진행분석.연구표명,압력30MPa、가압시간30min후획득적배체,수착소결온도적승고,소결체치밀도정상승추세,소결온도체도1450℃시진입소결후기,소결체구유교고적치밀도.차외,통과측정소결과정중배체수축솔,대SDC전해질도자편적소결동역학진행료연구,종이학정SDC전해질치밀화적소결온도위1300～1500℃.
The SDC electrolyte materials are prepared at high sintering temperature after molding using Sm2O3 doped Ca2 powders which are prepared by the coprecipitation-spray drying method. The effects of the molding pressure, holding time and sintering temperature on densification are studied. The microstructure and structural property of the sintered SDC are analyzed by SEM and XRD. The results show that the relative density of sintered SDC increases with sintering temperature increasing after dry-pressing process under 30MPa pressure for 30min holding time,the sintered SDC has high relative density at 1450℃. In addition, the characteristics of sintering kinetic curves of SDC ceramic are studied by means of measuring shrinkage. The results confirm that sintering temperature of SDC densification is 1300～1500℃.