Abstract—The formation of nanocrystals in the ZrO₂–TiO₂–H₂O system during isothermal (240°C) treatment of coprecipitated hydroxides under hydrothermal conditions has been studied. The formation of solid solutions based on monoclinic ZrO₂, anatase (TiO₂), and a high-temperature disordered phase of variable composition Zr_xTi_{(1 – x)}O₄ with a scrutinyite (α-PbO₂) structure has been demonstrated. The average size of Zr_xTi_{(1 – x)}O₄ crystallites is 16 ± 2 nm. The kinetic features of phase formation in the ZrO₂–TiO₂–H₂O system have been studied. It has been shown that the phase of variable composition Zr_xTi_{(1 – x)}O₄ is metastable and, with increasing hydrothermal treatment duration, decomposes into solid solutions based on monoclinic ZrO₂ and anatase.

摘要—研究了在水热条件下等温（240°C）处理共沉淀氢氧化物时，ZrO ₂ –TiO ₂ –H _{2 O 体系中纳米晶体的形成。}已经证明了基于单斜晶 ZrO ₂、锐钛矿 (TiO ₂ ) 和具有方晶石 (α-PbO _{2 ) 结构的可变成分 Zr x} Ti _{(1 - x )} O ₄的高温无序相的固溶体形成. Zr _x Ti _{(1 – x )} O _{4的平均尺寸} 微晶为 16 ± 2 nm。_{研究了 ZrO 2} -TiO ₂ -H ₂ O 体系中相形成的动力学特征。已经表明，可变成分 Zr _x Ti _{(1 – x )} O _{4相是亚稳态的，并且随着水热处理时间的增加，分解成基于单斜晶系 ZrO 2}和锐钛矿的固溶体。