Calculation of special point - set for deformed body - centered tetragonal lattice 变形体心四方点阵特殊点集的计算
Tetragonal crystal system 四方晶系
Implants for surgery . ceramic materials based on yttria - stabilized tetragonal zirconia 外科植入物.基于氧化钇稳定处理的四方形锆陶瓷材料
Standard specification for high - purity dense yttria tetragonal zirconium oxide polycrystal for surgical implant applications 外科植入用高纯度密集三氧化二钇四氧化锆多晶体的标准规范
Non - metallic materials for surgical implants - specification for ceramic materials based on yttria - stabilized tetragonal zirconia 外科植入非金属材料.基于氧化钇稳定处理的四方形氧化锆陶瓷材料规范
7 ) by using in - situ hydrothermal synthesis and sol - gel complex method a stoichiometry tetragonal perovskite pbti03 ceramic film was successfully prepared on tini substrate 通过采用原位水热solgel复合合成法,在tint基体上成功制备了结构较为致密的pbtio 。
No evidences of low - temperature phase transition were found for pbtio3 , while the tetragonal - orthogonal and orthorhombic - rhombohedral phase transitions were present for batio3 没有发现钛酸铅存在低温相变的证据,而钛酸钡则存在四方正交和正交三角铁电相变。
In the orthorhombic phase , the desorption activation energy has an obvious increase with the increase of temperature , while it varies smoothly in the tetragonal phase as the temperature increases 当样品为正交相时,脱附活化能随着温度的升高明显增加,而四方相时则变化比较平缓。
The xrd peak of 2 6 = 45 ? was gradually widened with the increasing of pt . it might mean that rhombohedral phase was gradually converted to tetragonal phase in this system 在pmn - pt系统中,随着pt含量的增加, 2 = 45的xrd特征峰出现明显峰宽化现象,表明pmn - pt由三方相逐步向四方相转化。