纳米铬酸锶镧制备及烧结行为  

Preparation and Sintering Behavior of Nano-scale La_(1-x)Sr_xCrO_3 Powder

作　　者：赵新明[1] 敖青[1] 李胜利[1] 孙良成[1] 李德辉[2] 

机构地区：[1]山东大学材料科学与工程学院,山东济南250061 [2]包头稀土研究院,内蒙古包头014010

出　　处：《金属热处理》2004年第11期5-8,共4页Heat Treatment of Metals

基　　金：山东省自然科学基金 (Y2 0 0 1F11) ;国家自然科学基金 ( 5 0 3 62 0 0 1)

摘　　要：采用sol gel法制备了铬酸锶镧纳米粉体 ,并用纳米粉体制成了烧结体。利用XRD、TEM及SEM方法研究了不同条件下粉末样品的物相组成、形貌及烧结体的形貌。结果表明 ,随着锶掺杂量的增加 ,La1 xSrxCrO3(x =0～0 4 )粉料的粒径逐渐变小。随煅烧温度的增高 ,粒径逐渐增大 ,其最佳合成温度为 80 0℃。La_(1-x)Sr_xCrO_3 nanometer powder was prepared by sol-gel method. The crystal structure of the calcined powder and morphology of the sintered samples were characterized by X-ray diffraction(XRD) ,TEM and SEM. The results show that the partical-diameters decrease with the increase of Sr quantity,and increase with the synthesize temperature. The best sintered temperature is about 800℃. The influence of binder content and the molding pressure on the distribution and size of the pores in sintered samples is significant.

关 键 词：铬酸锶镧 纳米晶 烧结 

分 类 号：TM28[一般工业技术—材料科学与工程]