Li-(Mg、Zn、Ni)钒酸盐三元体系相关系和结晶化学

PHASE RELATIONS IN AND CRYSTAL CHEMISTRY OF THE Li(Mg,Zn,Ni) VANADATE SYSTEM

对Li-(Mg、Zn、Ni)钒酸盐系统在500—800℃的相图研究发现:(Mg、Zn、Ni)V_2O_6和(Mg、Zn、Ni)_2V_2O_7,二个系统中都有两个主要固溶体,一个以NiV_2O_6(或Ni_2V_2O_7)为主结构,另一个在MgV_2O_6-ZnV_2O_6间形成完全连续型,Mg_2V_2O_7-Zn_2V_2O_7间为MgZnV_2O_7结构型。(Mg、Zn、Ni)_3V_2O_8系统中,整个就是一个固溶体,而Li(Mg、Zn、Ni)VO_4系统中,端员组分相互间也形成不同的固溶体。

The phase relations were determined in the systems of Li-(Mg, Zn, Ni) vanadates at the temperatures ranging between 550°and 800℃. Two solid solutions, a large region of NiV_2O_6-type and a complete series between MgV_2O_6 and ZnV_2O_6, exist in the system (Mg, Zn, Ni) V_2O_6. The system (Mg, Zn, Ni)_2-V_2O_7 has an extensive solid solution region based on Ni_2V_2O_7, whereas the system (Mg, Zn, Ni)_3V_2O_8 is characterized by a complete series. In the system Li (Mg, Zn, NI)VO_4, mutual solid solutions are expected to be formed between them.