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.
出处
《金属热处理》
CAS
CSCD
北大核心
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)
关键词
铬酸锶镧
纳米晶
烧结
La_(1-x)Sr_xCrO_3
nanocrystalline
sintering
