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釉面瓦干压成型工艺研究与试制 被引量:3
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作者 李煊 《砖瓦》 2007年第9期23-27,共5页
从干压平瓦熟坯层裂现象及检测分析其对应生坯各区密实度入手,分析了坯体及其对应熟坯层裂的必然原因,提出了坯体各部非等密实度是造成坯体素烧层裂的必然因素。实现非等静压的干压成型工艺生产等密实度瓦坯体的必要条件是实现模套内等... 从干压平瓦熟坯层裂现象及检测分析其对应生坯各区密实度入手,分析了坯体及其对应熟坯层裂的必然原因,提出了坯体各部非等密实度是造成坯体素烧层裂的必然因素。实现非等静压的干压成型工艺生产等密实度瓦坯体的必要条件是实现模套内等厚填料这一理论。对瓦形局部进行改造,制作了能进行等厚填料的干压瓦新型模具及新型填料器。 展开更多
关键词 层裂 等密实度 等厚填料 新型模具 新型填料器
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High tap density of Ni_3(PO_4)_2 coated LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 with enhanced cycling performance at high cut-off voltage
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作者 崔妍 徐盛明 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第1期315-320,共6页
The Li Ni1/3Co1/3Mn1/3O2 is first obtained by the controlled crystallization method and then coated with Ni3(PO4)2particles. The effects of the coating on rate capability and cycle life at high cut-off voltage are inv... The Li Ni1/3Co1/3Mn1/3O2 is first obtained by the controlled crystallization method and then coated with Ni3(PO4)2particles. The effects of the coating on rate capability and cycle life at high cut-off voltage are investigated by electrochemical impedance spectroscopy and galvanostatic measurements. The element ratio of Ni:Mn:Co is tested by inductively-coupled plasma spectrometer(ICP) analysis and it testified to be 1:1:1. It is indicated that Ni3(PO4)2-coated Li Ni1/3Co1/3Mn1/3O2 has an outstanding capacity retention, where 99% capacity retention is maintained after 10 cycles at 5C discharge rate between 2.7 V and 4.6 V. The electrochemical impedance spectroscopy(EIS) results show that the current exchange density i0 of the coated sample is higher than that of Li Ni1/3Co1/3Mn1/3O2, which is beneficial to its electrochemical performances. All the conclusions show that the Ni3(PO4)2coating can prominently enhance the high rate performance of the Li Ni1/3Co1/3Mn1/3O2, especially at high cut-off voltage. 展开更多
关键词 LiNi1/3Co1/3Mn1/3O2cathode material Electrochemistry Ni3(PO4)2coating High tap density High rate discharge capacity
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Energy loss of tens keV charged particles traveling in the hot dense carbon plasma
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作者 ZhenGuo Fu ZhiGang Wang +2 位作者 Bin He DaFang Li Ping Zhang 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2016年第8期65-72,共8页
The energy loss of charged particles, including electrons, protons, and α-particles with tens keV initial energy E0, traveling in the hot dense carbon(C) plasma for densities from 2.281 to 22.81 g/cm3 and temperature... The energy loss of charged particles, including electrons, protons, and α-particles with tens keV initial energy E0, traveling in the hot dense carbon(C) plasma for densities from 2.281 to 22.81 g/cm3 and temperatures from 400 to 1500 eV is systematically and quantitatively studied by using the dimensional continuation method. The behaviors of different charged particles are readily distinguishable from each other. Firstly, because an ion is thousands times heavier than an electron, the penetration distance of the electron is much longer than that of proton and α-particle traveling in the plasma. Secondly, most energy of electron projectile with E0 < 100 keV deposits into the electron species of C plasma, while for the cases of proton and α-particle with E0 < 100 keV,about more than half energy transfers into the ion species of C plasma. A simple decreasing law of the penetration distance as a function of the plasma density is fitted, and different behaviors of each projectile particle can be clearly found from the fitted data.We believe that with the advanced progress of the present experimental technology, the findings shown here could be confirmed in ion-stopping experiments in the near future. 展开更多
关键词 stopping power BPS model inertial confinement fusion dense plasmas
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