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以纳米TiO_2为原料,通过煅烧反应制备了纳米K_2Ti_6O_(13)晶须,对晶须合成中温度和时间诱导的相变、形态演化和生长机理等进行了原位研究．结果表明：纳米TiO_2作原料可显著降低晶须合成温度,适宜的煅烧温度为900～1100℃．形态演化观察和高温XRD分析表明：K_2Ti_6O_(13)晶须的相变及生长对温度极为敏感,形态演化是基于初期爆发式的相变和随后串并联式的长大．K_2Ti_6O_(13)晶须的生长遵守本研究提出的串并联机制,晶须轴向的生长台阶是串并联生长的直接结果．
Nano-TiO2 was used as raw material to prepare nano-K_2Ti_6O_ (13) whiskers by calcination reaction, and the in-situ study on temperature and time-induced phase transition, morphological evolution and growth mechanism of whiskers were carried out. The results show that the synthesis temperature of the whiskers can be significantly reduced by using nano-TiO 2 as raw materials, and the suitable calcination temperature is 900-1100 ℃. Morphological evolution observation and high temperature XRD analysis show that the phase transition and growth of K_2Ti_6O_ (13) whiskers are very sensitive to temperature. The morphological evolution is based on the initial explosive phase transition and subsequent series-parallel growth. The growth of K_2Ti_6O_ (13) whiskers obeys the series-parallel mechanism proposed in this study. The growth of whiskers in the axial direction is a direct result of the parallel-series growth.