共搜索到8280条信息，每页显示10条信息，共828页。用时：0小时0分0秒488毫秒
Preparation and characterization of Mo-Cu nanocomposite powders by chemical liquid reduction processLI Yi(李翼), WANG De-zhi(王德志), SUN Ao-kui(孙翱魁)(School of Materials Science and Engineering, Central South University, Changsha 410083, China)Abstract:A novel chemical liquid reduction process was employed to prepare nanosized Mo-Cu powders. The precipitates were first obtained by adding ammonium......
......
Trans. Nonferrous Met. Soc. China 23(2013) 841-848 Production of nanocrystalline silver particles by hydrogen reduction of silver nitrate aerosol droplets EBIN, Elif YAZICI, Sebahattin... were produced by hydrogen reduction of silver nitrate aerosol droplets formed by high frequency ultrasonic generator. The dependences of the particle size, morphology and crystallite size......
based on direct-reduction processHU Wen-tao1, WANG Hua-jun1, JI Chun-ling1, SUN Chuan-yao1, 2, YU Hong-dong2, ZHANG Yun-hai2(1. Key Laboratory of High Efficiency Mining and Safety for Metal Mines... and Technology, Beijing General Research Institute of mining & Metallurgy, Beijing 100070, China)Abstract:The effects of various factors, such as reduction coal dosage, preservation temperature, preservation......
(1-α)]4/T2} versus 1/T for different samples 表2 不同配比样品的活化能和指前因子 Table 2 Apparent activation energies E and pre-exponential factors A at different proportions compacts reduction reactions 结... laterites[J]. The Chinese Journal of Nonferrous Metals, 2008, 18(S1): s1-s8. [5] LI Yan-jun, SUN Yong-sheng, HAN Yue-xin, GAO Peng. Coal-based reduction mechanism of low-grade laterite ore[J]. Transactions......
Trans. Nonferrous Met. Soc. China 31(2021) 1818-1827 Direct carbothermic reduction of ilmenite concentrates by adding high dosage of Na2CO3 in microwave field Zhi-gang YU1,2,3, Jing-wu XIAO1,2,3, Hai... and efficient route for the utilization of ilmenite concentrates was proposed by direct carbothermic reduction in microwave field. High dosage of Na2CO3, which can be recycled, was added to accelerate......
and thicker tubes. Key words: tailor-welded tube; thickness distribution; hydroforming; weight reduction 1 Introduction Tube hydroforming becomes more and more attractive in manufacturing of tubular components in aviation, astronavigation and automobile industries due to its advantages such as weight reduction and high utilization of strength and stiffness [1-3]. But there are some disadvantages......
Reduction behavior and kinetics of vanadium–titanium sinters under high potential oxygen enriched pulverized coal injectionJin-fang Ma1,Guang-wei Wang1,Jian-liang Zhang1,Xin-yu Li2,Zheng-jian Liu1,Ke..." name="ChDivSummary">In this work,the reduction behavior of vanadium–titanium sinters was studied under five different sets of conditions of pulverized coal injection with oxygen enrichment.The modified......
Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenolNazar Hussain Kalwar,Ayman Nafady,Razium Ali Soomro,Sirajuddin,Syed Tufail Hussain..., transmission electron microscopy(TEM) and X-ray diffractometry(XRD). The cyst-Ni NPs are proved to be excellent heterogeneous catalysts for the 100% reduction of 4-nitrophenol(4-NPh) in the presence......
Mineralogy and carbothermal reduction behaviour of vanadium-bearing titaniferous magnetite ore in Eastern IndiaSaikat Samanta1,Tapan Kumar Baidya3,Siddhartha Mukherjee1,Rajib Dey11. Department...,and V,was performed by reduction roasting.The direct and indirect reduction were investigated by mixing the lump ore with solid activated charcoal in a closed reactor and purging the reducing gas......
