无机化学学报

Ca_0.61Nd_0.26TiO₃粉体：熔盐法制备及烧结特性

Ca_0.61Nd_0.26TiO₃ Powder: Preparation by Molten Salt Method and Sintering Characteristics

作者	单位
李伟明	浙江大学材料科学与工程学系，杭州 310027
张启龙	浙江大学材料科学与工程学系，杭州 310027
钟　铠	浙江大学材料科学与工程学系，杭州 310027
陈　乐	浙江大学材料科学与工程学系，杭州 310027
杨　辉	浙江大学材料科学与工程学系，杭州 310027
吴　飞	浙江大学材料科学与工程学系，杭州 310027

摘要:

关键词: 熔盐法 Ca_0.61Nd_0.26TiO₃ 煅烧温度颗粒形貌

基金项目:

Abstract: Pure Ca_0.61Nd_0.26TiO₃ powder was prepared by molten salt method at temperature ranging from 600 ℃ to 900 ℃, using CaCO₃，TiO₂ and Nd₂O₃ as raw materials and a mixture of KOH and KNO₃ as the flux. The results reveal that the morphology and the microstructure of Ca_0.61Nd_0.26TiO₃ are related to the calcination temperature, salt content(S, the mass ratio of reactant to salt) and the constitution of salt(R, the mass ratio of KNO₃ to KOH). The S and R affect the formation temperature of Ca_0.61Nd_0.26TiO₃. When S=1/2 and R=15, pure Ca_0.61Nd_0.26TiO₃ is successfully prepared at 600 ℃. The process for growing of Ca_0.61Nd_0.26TiO₃ is controlled by interface reaction, and changes of S and R affect the morphology of Ca_0.61Nd_0.26TiO₃. Ca_0.61Nd_0.26TiO₃ can be sintered densely at 1250 ℃.

Keywords: molten salt method Ca_0.61Nd_0.26TiO₃ formation temperature morphology

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李伟明,张启龙,钟　铠,陈　乐,杨　辉,吴　飞.Ca_0.61Nd_0.26TiO₃粉体：熔盐法制备及烧结特性[J].无机化学学报,2009,25(9):1672-1676.

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