| 1 | Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution显示文摘在使氯化的苯(CBzs ) 和含水的电子之间的反应(e aq ) 被电子横梁(EB ) 和激光闪光光分解作用(LFP ) 实验调查。在 EB 照耀,照耀剂量的效果,起始的集中和移动上的 Cl 原子的数字下面,效率进一步被检验。在 10 kGy, mono-CB, 1,3-diCB, 1,2-diCB 和 1,4-diCB 的移动效率分别地是 41.2% , 87.2% , 84.0% ,和 84.1% 。当照耀剂量是 50 kGy 时,移动效率分别地增加了到 47.4% , 95.8% , 95.0% ,和 95.2% 。CBzs 答案的照耀看了那越高起始的集中,越多降低 CBzs 的百分比移动。除了这, 1,2-dichlorobenzene (1,2-diCB ) 的 dechlorination 效率, 1,3-dichlorobenzene (1,3-diCB ) 和 1,4-dichlorobenzene (1,4-diCB ) 比 chlorobenzene (mono-CB ) 的高得多。反应的动力学与毫微秒 LFP 被完成。在 e 有 mono-CB, 1,2-diCB, 1,3-diCB 和 1,4-diCB 的 aq 是(5.3? | Haixia YUAN Huxiang PAN Jin SHI Hongjing LI Wenbo DONG | 2015 | Frontiers of Environmental Science & Engineering2015，9，4： | 1 |
| 3 | Generation mechanism and motion behavior of sliver defect in single crystal Ni-based superalloy显示文摘Sliver is a common but easily neglected defect in single crystal Ni-based superalloy castings.To date,there is still no unified viewpoint on its formation mechanism and generation causes.In this work,the orientation discontinuity and motion behavior of sliver defects were studied through experiments and numerical simulations.The ultrathin wedge-shaped specimen containing the grain boundary of the sliver and the matrix was prepared at the initial position of the sliver defect for the observation of equal thick-ness fringes.The discontinuity of equal thickness fringes on both sides of the grain boundary was ob-served through a transmission electron microscope,which directly confirms the abrupt change in the orientation between the sliver and matrix from the nanoscale.The crystal lattices at the smooth area and the bulging area of the grain boundary were found to have unusually different arrangements.The irregular lattice arrangement at the bulging area shows that the grain boundary has experienced high-stress deformation.Statistical results of sliver orientation deviation with a further composition analysis show the micro protuberance of the mold shell has a noticeable inductive effect on the sliver generation.Furthermore,a self-developed three-dimensional phase-field simulation model coupled with the spatial topology algorithm is established to simulate the orientation deflection behavior and orientation devia-tion threshold of fractured dendrites.The simulation results indicated that there is an upper limit of the cross-section solid fraction at the fracture position for the motion of the fractured dendrites.When the cross-section solid fraction at the fracture position is higher than this upper limit,it will be difficult to produce large deviation slivers due to the structural limitation of surrounding dendrites.This upper limit does not change with the solidification temperature gradient. | Huxiang Xia Yanhong Yang Qiushui Feng Qingyan Xu Hongbiao Dong Baicheng Liu | 2023 | Journal of Materials Science & Technology2023，，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员