ABO_3型钛铁矿结构化合物的容差因子  

Tolerance Factor of ABO_3-type Ilmenite Compound

作　　者：刘向春[1] 高峰[2] 邓军平[1] 田长生[2] 

机构地区：[1]西安科技大学材料科学与工程系,西安710054 [2]西北工业大学材料学院,西安710072

出　　处：《无机材料学报》2008年第5期881-885,共5页Journal of Inorganic Materials

基　　金：国家自然科学基金(60501015);西北工业大学博士论文创新基金(CX200408);西安科技大学培育基金(A515106)

摘　　要：通过结构解析,建立了ABO_3型钛铁矿的容差因子计算公式以评估结构的稳定性,经过分析具有钛铁矿结构的MgTiO_3、NiTiO_3、CoTiO_3、ZnTiO_3以及(Zn_(1-x),M_x)TiO_3(M为Mg、Ni、Co)复合钛铁矿的稳定性,验证了容差因子公式的合理性;通过对已发现的具ABO_3型钛铁矿结构的化合物的统计分析,提出形成稳定钛铁矿结构的经验容差因子范围和经验电负性差值,即:t>0.80,e>1.465.The tolerance factor of ABO3-type ilmenite by analyzing the ABO3 ilmenite crystal structure is established, and combining with the electronegativity difference, regularities governing the formation and the stability of ilmenite-type compounds are discussed. The tolerance factor equation is proved appropriate for ilmenite structure by analyzing the structure stability of some ilmenite compounds, such as MgTiO3, NiTiO3, CoTiO3, ZnTiO3 and （Zn1-x, Mx）TiO3 （M denote Mg, Ni, Co）. According to the results of statistical analyzing the tolerance factor and electronegativity difference of the present ABO3-type ilmenite, the experience tolerance factor value and experience electronegativity difference value to form stable ilmenite compound are obtained, that is, t 〉0.80 and e 〉1.465.

关 键 词：钛铁矿 稳定性 容差因子 电负性差 结构 

分 类 号：TM28[一般工业技术—材料科学与工程] O78[电气工程—电工理论与新技术]