3.Given today's events, it is interesting thathafniumcan be made to release a bomblike charge when struck with a specific waveform. 对于今天的情况来讲 有趣的是 铪可以被制造成类似于炸弹的东西 可以由特定的波形引爆 以上参考资料就是本英汉词典详细汇总的单词hafnium的翻译英语含义,如有错漏请向我们...
Hafnium Color Interesting Facts An isomer of Hf, Hafnium-178-m2, has a half-life of thirty-one years, releasing its stored energy of 10,000 times as much as in one gram of TNT in the form of gamma rays, making it a potential bomb. However, no study has yet confirmed its usefulness...
The experiments were made in a constant-pressure bomb by the method of (2). The reac- tion mixture, put into special quartz beakers with electric heating, was installed in the bomb. The heating and combustion temperatures of the mixtures were measured with a tungsten-- rhenium thermocouple ...
摘要: The enthalpy of formation of hafnium dioxide has been determined by means of an oxygen bomb calorimeter and is ΔH′298.15° K = -273.6 ± 0.3 kcal. per mole.DOI: 10.1021/je60037a034 被引量: 27 年份: 1968 收藏 引用 批量引用 报错 分享 ...
HfBr 3 has been prepared by reaction of finely powdered aluminium with an excess of HfBr 4 in a spherical bomb tube at 470°C and a pressure of about 60 atm. The results of measurements of the vapour pressure of HfBr 4 are presented.doi:10.1002/zaac.19673510508...
The larger the quantity of HF in the bomb, the larger the size of the crystals but the lower the yield of the MPO ja:math material. Crystal sizes of about 2.5 μm in length and 0.15 μm in diameter have been made with very large quantities of HF as mineralizer (10 times the...
A discrepancy in the literature has been resolved and the standard enthalpy of formation of hafnium dioxide, HfO 2 , has been determined by oxygen-bomb combustion calorimetry to be ΔH f o (HfO 2 , monoclinic, 298.15 K) = (267.12±0.39) kcal th mol 1 ....
Enthalpies of combustion of hafnium oxycarbides HfCxOy (10 samples; 0.592 x 0.982; 0.006 y 0.149) have been determined by oxygen-bomb calorimetry. The dependence of enthalpies of formation of HfCxOy on x and y is described by the equation 螖Hfo(HfCxOy)kcalth mol1 = 15.4 81.8x1 100y, ...
Enthalpies of formation of Zr and Hf carbides and Zr nitride were determined by several groups using combustion calorimetry in oxygen bomb. Due to differences in reported values for Zr carbides, Kornilov et al. in 1975 [136] performed a new experimental study on seven samples of ZrC0.72 to Zr...