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101.
Faraz Montazersadgh Hao Zhang Anas Alkayal Benjamin Buckley Ben W.Kolosz Bing Xu Jin Xuan 《Frontiers of Chemical Science and Engineering》2021,15(1):208-219
Utilizing CO2 in an electro-chemical process and synthesizing value-added chemicals are amongst the few viable and scalable pathways in carbon capture and utilization technologies.CO2 electro-reduction is also counted as one of the main options entailing less fossil fuel consumption and as a future electrical energy storage strategy.The current study aims at developing a new electrochemical platform to produce low-carbon e-biofuel through multifunctional electrosynthesis and integrated co-valorisation of biomass feedstocks with captured CO2.In this approach,CO2 is reduced at the cathode to produce drop-in fuels(e.g.,methanol)while value-added chemicals(e.g.,selective oxidation of alcohols,aldehydes,carboxylic acids and amines/amides)are produced at the anode.In this work,a numerical model of a continuous-flow design considering various anodic and cathodic reactions was built to determine the most techno-economically feasible configurations from the aspects of energy efficiency,environment impact and economical values.The reactor design was then optimized via parametric analysis. 相似文献
102.
近年来,盐浴淬火有许多新的发展。现选择三个重要领域进行详细讨论。其中的一个领域是定量数据新近的发展对盐浴淬火的可变数如零件重量、搅拌、加水量和盐的成分等的影响。这些因素与钢号或铸铁淬透性相关。第二个领域是包括化学热处理盐浴调整和再循环以复原。处置问题比通常想象的少。第三个和最有发展前途的领域是等温淬火的球墨铸铁(ADI)。这种材料的成分控制和合适的热处理已取得很大的进步。等温淬火的球墨铸铁的性能等同于或高于锻钢,而成本有重大的节约。为了生产等温淬火球墨铸铁,盐浴淬火是永恒不变的.分级淬火和等温淬… 相似文献
103.
1 INTRODUCTIONTi 6Al 4VisoneofthemostimportantTial loys[1,2 ] .Butthisalloyhasbadformabilityforitshighelasticresilience .Therefore ,hotsizingisimpor tant[36 ] .Asthebaseofhotsizing ,thestudyofstressrelaxationhasimportanttheoreticalvalueandpracticalsignificance .Ontheotherhand ,Ti 6Al 4Visusedasfastenermaterialssometimes .Whenthefastenersworkatthetemperaturehigherthanroomtemperature ,stressrelaxationmayresultsinacci dents .Sohowtopreventthestressrelaxationisveryimportant[7] .Uptonow ,… 相似文献
104.
利用弯曲应力松弛方法研究了魏氏组织和等轴组织BT20钛合金的应力松弛行为和应力松弛过程中的塑性应变速率和应力的关系.研究表明,在200℃应力松弛的时候,BT20合金等轴组织具有较好的抗松弛性能;在400℃和600℃时BT20合金魏氏组织具有较好的抗松弛性能. 相似文献
105.
106.
STUDY ON Ni-Cr SYSTEM SOLAR SELECTIVE THIN FILMS PREPARED BY MAGNETRON REACTIVE SPUTTERING PROCESS 总被引:1,自引:0,他引:1
B. W. Wang H. Shen Guangzhou Institute of Energy Conversion The Chinese Academy of Sciences Guangzhou China 《金属学报(英文版)》2002,15(2):203-206
1. IntroductionSolar selective thiIl solid fil1us are the key part for solar heat collect'ors. But ll1ostfactories still produced solar absorptive filn1s by traditional tecIl11ology sucl1 as pai1ltillga1ld electrocl1eluical process that nlust result in po… 相似文献
107.
E. Q. Xie W. W. Wang N. Jiang D. Y. He Department of Physics Lanzhou University Lanzhou China 《金属学报(英文版)》2002,15(2):221-226
1. IntroductionThe transition metal silicides have attraeted much attention because of their potentialapplicatiOIl in very large scale integration (VLSI) de.ice[1]. Near-noble metal silicides canbe used as Schottky al1d ohn1ic col1tacts in silicon-based d… 相似文献
108.
X.G.Cao J.L.Huang E.Sukedai Y.G.Wang W.Z.Chen S.X.Zhou Henan University of Science Technology Luoyang China Okayama University of Science Okayama Japan Beijing Laboratory of Electron Microscope The Chinese Academy of Sciences Beij 《金属学报(英文版)》2002,15(4):363-368
Rapidly quenching embrittlement (RQE) sometimes appears in Fe73.5Cu1Nb3Si13.5B9 nanocrystalline soft magnetic alloy (FINEMET) during production process. As a re-sult of RQE the ductility of the as-quenched ribbon drops seriously. The mechanism of RQE has been elucidated in the recent works of current authors. It was believed that RQE is due to the structural relaxation but not related to a-Fe(Si) crystallization. In this paper, the high resolution TEM (HRTEM) method and image digital processing were applied to analyze the HRTEM images of two FINEMET rapidly quenched ribbons with different thicknesses in detail. In the thinner ductile sample, the ordering domains with the size of about 3nm are observed. In the thicker RQE sample, the metastable nanocrystalline domains with the size of 18nm are observed along with the structural relaxation. These domains seem to have Fe3B-like metastable phase struc-ture on nanometer scale. The result indicates that the local atomic ordering regions extend when RQE induced 相似文献
109.
B. W. Zhang Z.M. Ren Y.B. Zhong K. Deng K.D. XuShanghai Enhanced Laboratory of Metallurgy Shanghai University Shanghai China 《金属学报(英文版)》2002,15(5):416-424
The electromagnetic field under applied AC and DC current in round and rectangular pipe was systematically investigated, then a concept of "equivalent current density" was proposed for evaluating the inhomogeneous electromagnetic pinch force, and the mono-component removal efficiency and the overall removal efficiency of inclusion were formulated. It is founded that flat pipe is superior to round pipe for the electromagnetic removal of inclusion, and DC current can get a higher removal efficiency than A C current due to absence of skin phenomenon. Under usual condition, a removal efficiency of 52% for 10μm inclusion or more than 92% for 20μm inclusion can be achieved by imposing a current density of 3×106A/m2 in a flat pipe. 相似文献
110.
研究了一种新型简化内氧化工艺,并制备了不同氧源系数的Cu-Al2O3复合材料。用SEM、TEM等分析手段对所制备复合材料烧结态的微观组织进行了研究。结果表明,该简化工艺成功制备了Cu-Al2O3复合材料,在铜基体上弥散分布着大量细小的γ-Al2O3颗粒,其粒径为5~20nm,颗粒间距为25~60nm,当氧源系数(k)为1.20时,压制粉末经烧结(950℃,4h)后全部完成内氧化,此氧化剂含量为最佳的内氧化氧化剂添加量。 相似文献