共搜索到17497条信息，每页显示10条信息，共1750页。用时：0小时0分0秒604毫秒
of the alloys were calculated by Van’t Hoff equation. The hydrogen desorption activation energy of the alloy hydride was estimated using Arrhenius and Kissinger methods. The results indicate that a variation... energy caused by increasing Ni content and prolong milling time. Key words: hydrogen storage; mechanical milling; activation energy; kinetics 1 Introduction In recent decades, a great deal of efforts......
......
, while increases the energy barrier for the glass transition and the crystallization, thus improves the thermal stability. The local area activation energy decreases with increasing crystallization volume of the amorphous alloy matrix composite.Key words:bulk amorphous alloy matrix composite; crystallization kinetics; activation energy......
......
......
to the left, and its phase transformation temperature interval would be narrower with the increase of Sn content. The phase transition activation energy of AgCuZnSn brazing alloys gradually increases using non-isothermal methods. Under the same Sn content, the phase transition activation energy of brazing alloys with non-isothermal differential method is exactly the same as that of integral......
at different conversion rates 表4 不同热解率α下污泥的活化能 Table 4 Activation energy of sludge at different conversion rates 污泥热解过程中,活化能E在100~600 kJ/mol范围内变化,且随热解率α的改变而表现出明显差异,在热解率α为0.1~0.5之间时,活化能表现出明显增长趋势,伴随着纤维素物质和脂...) in the distributed activation energy model from three sets of experimental data[J]. Energy & Fuels, 1995, 9(2): 302-307. [13] 杨真乐, 乔瑜, 刘帅, 等. 污泥低温热解过程中含硫气体释放实验研究[J]. 工程热物理学报, 2012, 33(12): 2202-2206. YANG......
Activation pretreatment of limonitic laterite ores by alkali-roasting using NaOHQiang Guo1,2,3), Jing-kui Qu1,2), Tao Qi1,2), Guang-ye Wei1,2,4), and Bing-bing Han1,2) 1) National Engineering..., China摘 要:Activation pretreatment of Cr-containing limonitic laterite ores by NaOH roasting to remove Cr, Al, and Si, as well as its effect on Ni and Co......
on the flow stress behaviors of high Nb X80 pipeline steels. When the C content in steels is constant, the recrystallization activation energy increases from 387 to 481 kJ/mol with increasing the Nb from 0.082% to 0.13% (mass fraction). However, the effect of Nb is correlative to the C content, i.e. w(Nb)/w(C). When w(Nb)/w(C) decreases from 3.61 to 2.18, the recrystallization activation energy......
cannot be stable and will transform to silver during the milling. Key words: silver nanocrystalline; silver oxide; Gibbs free energy function; mechanical activation 1 Introduction Mechanochemistry... very large. Consequently, rather than fracture, generation of dislocations is the predominant phenomenon in mechanical activation [18]. The change in molar Gibbs free energy of milled silver oxide due......
