Test Measurements and Error Analysis of Thermo-physical Properties of Phase-change Materials at a Phase-transition Point Temperature 相变材料相变点温度热物性的测试及误差分析
Hence we combined coprecipitation method, using zinc carbonate as enclosure dose causing the crystal nucleus can not grow up, Zinc titanate acts as phase-transition accelerant, thereby we can obtain rutile nanometer TiO2 powder at lower calcining temperature and in briefer calcining time relatively. 因此我们结合共沉淀法,引入碳酸锌作包覆剂控制品粒长大,利用钛酸锌作品型促进剂,在相对较低的焙烧温度和较短的保温时间内制得到了金红石型纳米TiO2粉体。
RESULTS: The specific mechanics characters of MO were: memory as dominant and superficial elasticity as assistance, one-way orientation, phase-transition temperature ( 33 ± 2)℃. 结果:记忆接骨器特有的力学特征:记忆为主,超弹为辅,取向单程,相变温度在(33±2)℃。
Mechanism of cstmi_3 formation and its phase-transition temperature CsTmI3生成机理及其相转变
The structure, composition, phase-transition temperature, magnitude of the abrupt electrical resistance change and the light transmittance before and after phase-transition of the doped thin films were tested by XRD and XPS methods. 实验采用XRD和XPS等研究手段,对掺杂薄膜的物相组成、价态、相变温度、电阻突变量级和相变前后的光透过率进行了测试。
It was found that after doping with Co, the temperature of transition from anatase to rutile was reduced obviously. When the dopant amounted to 4%, the phase-transition temperature dropped about 90? 钴掺杂造成了锐钛矿向金红石相的转变温度明显降低,掺杂量从0增加到4%时,相变温度下降了90℃左右。
As the contents of the NaCl increased, the phase-transition temperature shifted to the lower temperature range, meanwhile both the apparent specific heat and enthalpy at the freezing point decreased. 随着NaCl添加量的增加,脆肉鲩的相变温区向低温方向移动,表观比热峰值下降,冰点的热焓值下降。