tetragonal phase zirconia 四方相氧化锆
tetragonal phase structure 四方相结构
rhombohedral-tetragonal phase 三方
transformable tetragonal phase 可相变四方相
ZrO 2 tetragonal phase ZrO2四方相
tetragonal phase BaTiO 3 四方相BaTiO
But the tetragonal phase in the surface region transforms easily to monoclinic phase when the samples are exposed to air.
尽管惰性气氛和还原气氛下焙烧样品有利于四方相的稳定，但样品暴露于空气中后，表面四方相较易转变为单斜相。
It is found that the increase of oxygen vacancy content can increase the instability of the metastable tetragonal phase and accelerate the transformation to monoclinic zirconia.
结果表明：氧空位的存在与变化不仅影响着氧化锆相结构的稳定性，而且影响着氧化锆的低温相变过程。
Titanium nitride was synthesized by ammonia reduction and nitridation under flowing ammonia atmosphere while the content and tetragonal phase structure of zirconia was unchanged.
采用氨气还原氮化法，在流动的氨气氛下原位反应生成氮化钛，同时保持四方相氧化锆含量和结构不变。
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