Materials Literature
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Mossbauer spectroscopy and electron microscopic analysis were used to investigate the precipita� tion of products of cellular decomposition and their dissolution in highnitrogen chromiummanganese steel FeMn22Cr18N0.8 under roomtemperature severe deformation via dry sliding friction and high pressure tor� sion in Bridg…
Structural, energetic and electronic properties of ScMn2 alloy and its hydride ScMn2H1.5 were investigated by means of first-principles calculations within a framework of the density function theory. The obtained structural parameters were close to the available experimental results. The cohesive energies and enthalpi…
Archive of work produced using the resources of the Imperial College High Performance Computing Service.
The aim of the research was to develop high thermal conductivity materials by using multiple fillers. Synergetic effect was found and proved between fillers while the thermal conductivity was doubled.
Путем численного трехмерного моделирования взрывного нагруженияменисковых облицовок исследовано влияние периодических волнообразныхнеравномерностей профиля облицовки на образование складок у высоко-скоростных стержневых элементов, формируемых в результате нагру-жения. Предложен подход к учету малых искажений геометрии…
니켈은 대부분 페로 니켈 형태로 스테인리스 강 제조나 니켈 촉매, 니켈 도금, 니켈 카드뮴 전지로 널리 사용이 되고 있다. 니켈은 대부분 함 니켈 광석으로부터 용융환원 공정을 통해 페로 니켈을 생산하고 있다. 하지만 최근 함 니켈 광석의 고갈과 저품위화로 인하여 니켈 생산에 어려움을 겪고 있다. 그뿐만 아니라 니켈 생산 공정은 용융환원 공정으로서 공정상 폐슬래그 및 폐수 처리 비용과 환경오염의 문제도 발생시킨다. 또한 고온에서 이루어지는 공정이라 에너지 효율면에서도 문제가 대두되고 있는 실정이다. 따라서 본 연구에서는 자원고갈의 문제를 가지고 있는 함 니켈 광석이…
An in-depth mass spectrometric, computational, and kinetics study\nof glyoxylate (deprotonated glyoxylic acid) and pyruvate (deprotonated\npyruvic acid) has been performed, along with a brief experimental\nand computational investigation on deprotonated trifluoropyruvic acid (trifluoropyruvate). Their corresponding ac…
The paper describes the process of growth of two-dimensional structures on the basis of the phase-field model and the DLA (Diffusion-limited aggregation). We consider a hybrid model, based on which can be described various transport phenomena in systems of dispersed particles, nanoparticles, etc. Investigated the char…
The structural and vibrational properties of phenanthrene are measured at high pressures up to 30.2 GPa by Raman spectroscopy and synchrotron X-ray diffraction techniques. Two phase transitions are observed in the Raman spectra at pressures of 2.3 GPa and 5.4 GPa which correspond to significant changes of intermolecul…
Swell and sag drawdown significantly influence the high density polyethylene parison. Numerical simulations of the flow field of a HDPE melt were performed using the finite element method for the die of plastic pipe extrusion and parison formation. The constitutive equation of Carreau law was used to describe the poly…
The melting and solidification of Ag was simulated by molecular dynamics method. The structural transfor- mation of Ag during the metal solidification and amorphous crystallization was analyzed based on the variations of the internal energy, radial distribution function (RDF), common neighbor analysis (CNA), and atomi…
[liu, x. g.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.
The effect of 5-hydroxyadamantane-2-one was studied on morphological state of brain tissue of rats after the occlusion of left middle cerebral artery. It was shown that intraperitoneal administration of 5-hydroxyadamantane-2-on at dose 100mg/kg, in 30 minutes after occlusion and once daily for the following 6 and 12 d…
在辣根过氧化物酶／H2O2的催化体系下，以异丁香酚为原料，酶促合成包含α-O-4和β-5的木质素模型物。研究了不同条件对合成的影响，并用红外光谱（IR）、元素分析（EA）、气质色谱联用（GC—MS）、核磁共振波谱（NMR）对产物的结构进行了表征。结果表明，异丁香酚（5mmol）和双氧水的摩尔比为1：1，反应温度为50℃，辣根过氧化物酶的用量为1．5mL（10g／L），反应体系为丙酮与磷酸氢二钠和磷酸二氢钠组成（pH=5．83）的混合体系35mL[V（丙酮）：V（Na2HPO4＋NaH2PO4）=3：4]，反应时间为2h时，产率达90％以上。
The paper contains the results of experimental studies on galvanic features of "implant-construction alloy" contact pair. These results may be used as criteria for implant-retained restorations alloy choice.
CuO is an important p-type metal oxide semiconductor material and it has been used in many fields for its excellent physical and chemical properties, such as field effect transistors, photovoltaic cells, field emission nanodevices, and chemical and gas sensors. In this paper, CuO nanowires are synthesized by thermal o…
The formation of an outofelectrode plasma in a highvoltage gas discharge is studied. The occurrence and selfmaintenance of a gas discharge and its associated plasma fluxes on the straight portions of electrical field lines are predicted theoretically and confirmed experimentally. It is shown that the focusing of the g…
In situ investigation of curvature change induced by stress in multilayer structure during co-sintering for wavy type SOFC
以FeCrNiBSi与Cr3C2粉末为原料,采用等离子熔覆技术在Q235表面通过原位反应制备了高体积分数六方柱（Cr,Fe）7C3碳化物增强Fe基涂层,利用光学显微镜（OM）、扫描电镜（SEM）、电子能谱（EDS）、XRD射线衍射观察分析了涂层的显微组织结构,同时在M-2000型磨损试验机上考察了恒载荷及变载荷涂层滑动干摩擦时的耐磨性能.结果表明：涂层主要组织为初生（Cr,Fe）7C3碳化物、α-Fe及未溶的Cr3C2,其中（Cr,Fe）7C3在整个涂层中的分布较均匀,平均体积分数达75%,显微硬度为HV0.5（1 218～1 524）,由于高体积分数硬质相的存在,涂层恒载荷下相对耐磨性为纯FeCrNiBSi涂层的9倍,变载荷下相…
Presented herein is an investigation into the stretching and fracture behavior of single-walled carbon nanotubes (SWCNT) subjected to axial tensile load at various temperatures. This study is carried out using molecular dynamics (MD) simulation at temperatures ranging from 200 K to 2200 K. The authors find that single…