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Al-2 Hf alloys with separate vanadium,tantalum,tungsten and zirconium additions were investigated by X-ray diffraction(XRD),electron probe microanalyzer(EPMA) equipped with wave-dispersive...High-temperature oxidation behavior of Nb-Si-based alloy with separate vanadium,tantalum,tungsten and zirconium additionSheng-Nan Zhang,Li-Na Jia,Yue-Ling Guo,Bin Kong,Feng-Xiang Zhang,Hu ZhangSchool......
; Preparation of tungsten disulfide motor oil and its tribological characteristics SHI Chen(石 琛),MAO Da-heng(毛大恒),FENG Hao(俸 颢) (School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China) Abstract: Through using mineral oil and synthetic oil to deploy the semisynthesis base oil, modifying the surfaces of ultrafine tungsten disulfide grains......
with the other alloys. It can be concluded that the optimal sintering temperature of 90W-4Ni-2Fe-3.8Mo-0.2RE pre-alloyed powders after 15 h mechanical alloying is 1 300-1 350 ℃. Key words: tungsten based high... alloys will be used widely not only as structural material, but also as functional material. Nano-crystalline tungsten-based alloys possess its good properties of high melting point, high temperature......
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strengthening; solution strengthening; mechanical property 高密度钨合金(Tungsten heavy alloys, WHAs)是由体心立方W晶粒弥散分布于低熔点韧性金属(如Fe,Ni,Co,Cu等)组成的两相复合材料.合金元素的多元化和应用领域的扩展导致高密度钨合金涵盖的合金种类越来越多,因而很多情况下也简称为"钨合金"[1-3].高密度W-Ni...足科学技术发展需要的高强高韧纳米晶钨合金. REFERENCES [1] UPADHYAYA A. Processing strategy for consolidating tungsten heavy alloys for ordnance applications[J]. Materials Chemistry and Physics, 2001, 67(1/3): 101-110. [2......
Comparison of heavy metal removal efficiencies infour activated sludge processesYANG Jun(杨军), GAO Ding(高定), CHEN Tong-bin(陈同斌), LEI Mei(雷梅), ZHENG Guo-di(郑国砥), ZHOU Xiao-yong(周小勇)(Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences, Beijing 100101, China)Abstract:The removal efficiencies of heavy metals (As, Cr, Cu, Ni......
of applications. Recently, the interest on welding of magnesium alloys has been increasing rapidly, mainly focusing on gas tungsten arc welding (GTAW), laser-beam welding, electron beam welding and friction... Optimization of pulsed current gas tungsten arc welding process parameters to attain maximum tensile strength in AZ31B magnesium alloy G. PADMANABAN, V. BALASUBRAMANIAN Center for Materials......
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J. Cent. South Univ. Technol. (2011) 18: 1408-1412 DOI: 10.1007/s11771-011-0854-8 Heavy metals accumulation effect in rabbit body fluids after smoking ZHONG Kuang-biao(钟狂飚)1, GUI Ming(桂明)1, ZHU...; Abstract: Concentration of heavy metals in blood and urine of rabbit after......
that the process has low leaching cost and waste water discharge. References [1] LASSNER E, SCHUBERT W D. Tungsten properties, chemistry, technology of the element, alloys, and chemical compounds [M]. New York...J. Cent. South Univ. (2016) 23: 1312-1317 DOI: 10.1007/s11771-016-3181-2 Coordination leaching of tungsten from scheelite concentrate with phosphorus in nitric acid ZHANG Wen-juan(张文娟)1, YANG Jin......
