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| 1 | Thermal deformation behavior and microstructure of nuclear austenitic stainless steel显示文摘Gleeble-1500D thermal simulation tester was employed in the hot-compression investigation of as-cast nuclear 304 austenitic stainless steel under conditions: deformation temperature 950―1200℃; deformations 30% and 50%; deformation rates 0.01 and 0.1 s?1. The results show that the flow stress decreases with temperature rise under the same strain rate and deformation, that the flow stress increases with deformation under the same temperature and strain rate, and that the flow stress increases with strain rate under the same temperature condition, i.e., work hardening becomes distinct. Materials exhibit better strength-toughness when the strain rate is 0.01 s-1, the deformation is 50%, and the temperature is 1050℃. | LIU Jie FAN GuangWei HAN PeiDe LIU JianSheng GE DongSheng QIAO GuanJun | 2009 | Science China(Technological Sciences)2009，52，8： | 4 |
| 2 | Influence mechanism of boron segregation on the microstructure evolution and hot ductility of super austenitic stainless steel S32654显示文摘Influence mechanism of B segregation on the microstructure evolution and hot ductility of S32654 at850-1250℃was systematically investigated through experimental research and theoretical calculation.The results demonstrated that the segregation of B at grain boundary(GB)played different roles in the microstructure evolution and hot ductility at various temperatures.At 850℃,B segregation inhibited Mo segregation at the GB and enhanced the GB cohesion.At 900-950℃,B segregation restricted the diffusion and segregation of Mo to the GB,inhibiting the precipitation ofσphase.At 1000-1050℃,B segregation accelerated the dislocation accumulation and limited the GB migration,promoting the nucleation and inhibiting the growth of DRX grains.At 1100-1150℃,B has little effect on the DRX due to sufficient energy supply by higher temperature.Under the above beneficial effects of B,the hot ductility of S32654 was improved to varying degrees at 850-1150℃.However,as the temperature increased to1200-1250℃,B segregation decreased the solidus temperature and enhanced the liquefaction cracking tendency,resulting in a deterioration of the hot ductility. | Jiangtao Yu Shucai Zhang Huabing Li Zhouhua Jiang Hao Feng Panpan Xu Peide Han | 2022 | Journal of Materials Science & Technology2022，，17： | 2 |
| 3 | First-Principles Calculations of Electronic, Elastic and Thermal Properties of Magnesium Doped with Alloying Elements显示文摘First-principles calculations have been carried out to investigate the effects of alloying elements(Zn, Li, Y and Sc) on the electronic structure, elastic and thermal properties of Mg solid solution. The calculated cohesive energies show that Mg-Sc has the highest structural stability. The calculations of the densities of states(DOS) and electronic charge density difference indicate that Mg-Y(Sc) alloys have very strong covalent bonding due to a very strong Mg p-Y(Sc) d hybridization. The bulk modulus B, shear modulus G, Young's modulus E and Poisson ratio ν are derived using Voigt-Reuss-Hill(VRH) approximation. The results show that all the alloys can exhibit ductile properties at 2.77 at% R, and Mg-Zn(Li) alloys have the better ductility and plasticity. In the end, the Debye temperature and isochoric heat capacity are also calculated and discussed. | 杨晓敏 赵宇宏 HOU Hua ZHENG Shuhua HAN Peide | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，1： | 2 |
| 4 | A photonic wire-based directional coupler based on SOl 显示文摘 | Quan Yujun Han Peide Ran Qijiang | 2008 | Optics Communications2008，281，： | 1 |
| 5 | CH_4 dissociation on Co(0001): A density functional theory study显示文摘CH4 dissociation on Co(0001) surfaces is an important step, which has been investigated at the level of density functional theory. It is found that CH4 is unfavorable to adsorb on Co(0001), while CH4 favores to dissociate to CH3, CH2 and CH on Co(0001) surface by sequential dehydrogenation. In the whole process of CH4 dehydrogenation, CH4 dissociate to CH3 and H is the rate-determining step. The calculated results show that CH2 and CH exist mainly on Co(0001) surface, while the dehydrogenation of CH into C and H is difficult. | Wei Huang Lulu Sun Peide Han Jinzhen Zhao | 2012 | Journal of Natural Gas Chemistry2012，21，1： | 1 |
| 6 | A fuzzy multi-attitude decision-making method under risk with unknown attribute weight显示文摘 | Han Zuosheng Liu Peide | 2011 | Technological and Economic Development of Economy2011，17，2： | 1 |
| 7 | Experimental research on the relationship between bypass diode configuration of photovoltaic module and hot spot generation显示文摘A hot spot is a reliability problem in photovoltaic(PV) modules where a mismatched or shaded cell heats up significantly and degrades the PV module output power performance. High PV cell temperature due to a hot spot can damage the cell encapsulate and lead to second breakdown, which both cause permanent damage to the PV module. In present systems, bypass diodes are used to mitigate the hot spot problem. In this work, five commercial polysilicon P V modules configured with different numbers of bypass diodes are used to study the influence of bypass diodes on the reverse bias voltage of a shaded cell and the resulting hot spot phenomenon. The reverse bias voltage of the shaded cell, and the hot spot probability and severity decrease as the number of bypass diodes increases. Negative terminal voltage of a shaded cell accompanied by a switched-off bypass diode are the necessary condition for hot spot generation. In an extreme case where each cell has an individual bypass diode in a P V module, it still cannot avoid the hazards of a hot spot under the shading areas of 5-7 cm2, but the probability of a hot spot is reduced to a minimum of 0.41%. | Cong Gao Peng Liang Huixue Ren Peide Han | 2018 | Journal of Semiconductors2018，39，12： | 1 |
| 8 | Theoretical investigation of the reflectivity of fullerene-(C60, C70 )/AlN multilayers in UV region显示文摘 | Xu Bingshe Han Peide Liang Jian | 2005 | Solid State Communications2005，133，6： | 1 |
| 9 | Theoretical studies on the reaction mechanisms of AIOOH- and ),-A1203-catalysed methanol dehydration in the gas and liquid phases 显示文摘 | Zuo ZhiJun Wei Huang PeiDe Han | 2011 | Applied Catalysis A: General2011，408，： | 1 |
| 10 | A Fuzzy Multi-Attribute Decision-Making Method under Risk with Unknown Attribute Weights显示文摘 | Han Zuosheng Liu Peide | 2011 | Technological and Economic Development of Economy2011，17，2： | 1 |
| 11 | Differences in etching characteristics of TMAH and KOH on prepa- ring inverted pyramids for silicon solar cells 显示文摘 | Fan Yujie Han Peide Liang Peng | 2013 | Applied Surface Science2013，264，： | 1 |
| 12 | Adsorption Mechanism of Acetylene Hydrogenation on the Pd (111) Surface显示文摘First-principles calculations are carried out to examine the adsorption of acetylene over the Pd(111)surface.A hydrogen adsorption system is initially investigated to confirm the reliability of the selected calculation method.Adsorption energies,Mulliken-populations,overlap populations,charge density,and projected density of states(PDOS)are then calculated in the optimised acetylene adsorption system.Results show that C_(2)H_(2) molecule tends to adsorb through the threefold parallel-bridge configuration that is computed to be the most stable.In this structure,the distance of the C-H bond is calculated to be 1.09 Å,and the C-C-H bond angle is 128°.The distance of the C-C bond in acetylene is 1.36 Å,increasing from 1.21 Å in the gas phase.Moreover,the C-C bond overlap population decreases from 1.98 to 1.38,revealing that the carbon configuration in C2H2 rehybridises from sp to sp^(2) and beyond.The obtained results are compared with available experimental studies on acetylene hydrogenation on single-metal surfaces.The PDOS study indicates that a carbonaceous layer may generate on the metal surface during acetylene adsorption.The carbonaceous layer can affect the adsorption and reaction of acetylene,thereby inactivating the metal surface.Our experiments also show that Pd exhibits high catalytic activity. | Xuejia Xie Xiuli Song Wenyan Dong Zhenhai Liang Caimei Fan Peide Han | 2014 | Chinese Journal of Chemistry2014，32，7： | 1 |
| 13 | Differences in etching characteristics of TMAH and KOH on preparing inverted pyramids for silicon solar cells显示文摘 | Yujie Fan Peide Han Peng Liang | 2013 | Applied Surface Science2013，264，： | 1 |
| 14 | DFT study on the sulfurization mechanism during the desulfurization of H2S on the ZnO des- ulfurizer显示文摘 | Lixia Ling Riguang Zhang Peide Han etal | 2013 | Fuel Processing Technology2013，106，： | 1 |
| 15 | First-principles study on the structural, electronic and optical properties of BiO X ( X =Cl, Br, I) crystals显示文摘 | Lijun Zhao Xiaochao Zhang Caimei Fan Zhenhai Liang Peide Han | 2012 | Physica B: Physics of Condensed Matter2012，，17： | 1 |
| 16 | First-principles Investigation of the Structural, Electronic and Elastic Properties of Al_2Ca and Al_4Sr Phases in Mg-Al-Ca(Sr) Alloy显示文摘First-principles calculations have been carried out to investigate the structural stabilities, electronic structures and elastic properties of Mg17Al12, Al2 Ca and Al4 Sr phases. The optimized structural parameters are in good agreement with the experimental and other theoretical values. The calculated formation enthalpies and cohesive energies show that Al2 Ca has the strongest alloying ability, and Al4 Sr has the highest structural stability. The densities of states(DOS), Mulliken electronic populations, and electronic charge density difference are obtained to reveal the underlying mechanism of structural stability. The bulk modulus, shear modulus, Young's modulus, and Poisson's ratio are estimated from the calculated elastic constants. The mechanical properties of these phases are further analyzed and discussed. The Gibbs free energy and Debye temperature are also calculated and discussed. | 杨晓敏 侯华 ZHAO Yuhong YANG Ling HAN Peide | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，5： | 1 |
| 17 | A Density Functional Theory Study of the Geometric and Electronic Structure of MgF_2 (110) Surface显示文摘Ab initio density functional theory (DFT) was employed to study geometric and electronic structure of MgF2 (110) surface. Three different clean surface models have been considered. The results show that the surface terminated with one-layer F has the smallest relaxation and the lowest surface energy, which indicates this model is the most energetically favorable structure of MgF2(110) surface. Furthermore, the electronic properties are also discussed from the point of density of states and charge density. Analysis of electronic structure shows that the band gap of the surface is significantly narrowed with respect to the bulk. The electrons of the surface exhibit strong locality and larger effective mass. | 王丽平 HAN Peide ZHANG Caili HAO Yuying 许并社 | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，1： | 0 |
| 18 | Pyramid size control and morphology treatment for high-efficiency silicon heterojunction solar cells显示文摘This paper investigates the formation process of surface pyramid and etching characteristics during the texturing process of mono-crystalline silicon wafers. It is found that there is an etch rate transition point in alkaline anisotropic etching when{100} plane-dominated etch turns to {111} plane-dominated etch, and the pyramid size has a strong linear correlation with the etch amount at the transition point. Several techniques were developed to control the pyramid size by monitoring and adjusting the etching amount. A wide range of average pyramid sizes were successfully achieved, from 0.5 to 12 μm. The experiments of the pyramid size on the light reflectance, the minority carrier lifetime(MCLT), and the performance of silicon heterojunction(SHJ)solar cells were carried out and analyzed. A desirable range of pyramid sizes was empirically determined by our investigation. In order to reduce the density states on the texturing surface, the wet-chemical smoothing treatment was also investigated. The smoothing treatment improves the passivation quality and the performance of the solar cells. Through pyramid size control and morphology treatment, together with the amorphous silicon(a-Si:H) deposition improvement, and electrode optimization, high performance of SHJ solar cells has been achieved, up to conversion efficiency 23.6%. | Xiaorang Tian Peide Han Guanchao Zhao Rong Yang Liwei Li Yuan Meng Ted Guo | 2019 | Journal of Semiconductors2019，40，3： | 0 |
| 19 | Improvement of coercivity and thermal stability of Nd-Fe-B sintered magnets by intergranular addition of Tb80Fe20 alloy显示文摘To improve the coercivity and temperature stability of Nd-Fe-B sintered magnets for high-temperature applications,the eutectic Tb_(80)Fe_(20)(wt%)alloy powders were added into the Nd-Fe-B sintered magnets by intergranular method to enhance the coercivity(H_(cj))and thermal stability.The micro structure,magnetic properties and thermal stability of the Nd-Fe-B magnets with different Tb_(80)Fe_(20)contents were studied.The experimental results demonstrate that the coercivity(H_(cj))of the sintered Nd-Fe-B magnet is significantly enhanced from 14.12 to 27.78 kOe,and the remanence(Br)decreases not obviously by introducing 4 wt%Tb_(80)Fe_(20)alloy.Meanwhile,the reversible tempe rature coefficients of coercivity(β)and remanence(α)of the Nd-Fe-B magnets are increased from-0.5634%/℃to-0.4506%/℃and-0.1276%/℃to-0.1199%/℃at 20-170℃,respectively.The Curie temperature(TC)of the Nd-Fe-B magnet is slightly enhanced with the increase of Tb_(80)Fe_(20)content.Moreover,the irreversible flux magnetic loss(hirr)is obviously reduced as Tb80Fe20addition increases.Further analysis of the microstructure reveals that a modified microstructure,i.e.clear and continuous RE-rich grain boundary layer,is acquired in the sintered magnets by introducing Tb_(80)Fe_(20)alloy.The associated mechanisms on improved coercivity and thermal stability were comprehensively researched. | Ze Duan Haicheng Xuan Jincai Su Jingwu Chen Xiaofei Yi Youhao Liu Peide Han | 2022 | Journal of Rare Earths2022，40，12： | 0 |
| 20 | Analysis of effects of front and back surface dopants on silicon vertical multi-junction solar cell by 2D numerical simulation显示文摘The silicon vertical multi-junction(VMJ)solar cell has a good potential in high concentration,but it requires high quality front and back surface passivation layers to keep its high efficiency.We try to add dopants into the front and back surfaces of the VMJ cell to release this strict requirement in this work.The effects of recombination velocities,doping types and doping profiles of front and back surfaces on the performance of the P-type VMJ cell were calculated under 1 sun and 1000 suns.The 2D numerical simulation tool TCAD software was used.The performance of the VMJ cell without front and back surface dopants was also calculated for comparison.It was found that the requirement of high quality front and back surface passivation layers could be released remarkably by adding either N-type or P+-type front and back surface dopants.For the two types of front surface dopants,the highest efficiencies of the cells were got by light dopant;for the two types of back surface dopants,the doping type and profile affected little on the performance of the cell in our calculation range.It was also found that the series resistance of the VMJ cell with N-type front surface dopant was decreased by the 2D effect of front surface emitter.The VMJ cell with P+-type front surface dopant had the highest efficiency under 1000 suns and the VMJ cell with N-type front surface dopant had the highest efficiency under 1 sun in our calculation range. | XING YuPeng HAN PeiDe WANG Shuai LIANG Peng LOU ShiShu ZHANG YuanBo HU ShaoXu ZHU HuiShi MI YanHong ZHAO ChunHua | 2013 | Science China(Technological Sciences)2013，56，11： | 0 |
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