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(TLP)扩散连接Ti-6Al-4V和 Al 2024合金,在铝基体上热喷涂80 μm厚的巴氏合金作为中间层.热喷涂会产生粗糙清洁的表面,使得接头强度更高.采用的优化参数为:连接温度580 °C,保温时间30和60 min.显微组织观察和XRD衍射谱证明在Al焊缝处形成Al2Cu, Al2CuMg,Cu3Ti,TiAl3,TiAl和Mg2Sn 金属间化合物.另一方面,在Ti合金一侧形成...Trans. Nonferrous Met. Soc. China 30(2020) 1267-1276 TLP bonding of Ti-6Al-4V to Al 2024 using thermal spray Babbitt alloy interlayer H. NAEIMIAN, M. A. MOFID Department of Petroleum, Mining......
Trans. Nonferrous Met. Soc. China 26(2016) 3046-3051 Mechanism of boron removal from Si-Al melt by Ar-H2 gas mixtures Jing-wei LI, Xiao-long BAI, Bo-yuan BAN, Qiu-xiang HE, Jian CHEN Key Laboratory... and iron in Si-Al melt were investigated during Ar-H2 gas blowing treatment. The mechanism of boron removal was discussed. The results indicate that gas blowing can refine grain size and increase......
实验 配料采用99.99%工业纯铝,99.80%电解铜板,99.90%纯Mg,及工业纯Si,在高纯石墨坩埚电阻炉中熔配出Al-Cu,Al-Si中间合金,再加入上述纯金属配出所需成分,3种实验合金成分分别为:合金A,Al-5.17Cu-2.63Si(质量分数,下同)；合金B,Al-4.29Cu- 1.09Mg；合金C,Al-2.09Si-1.66Mg. 为使同成分合金在3种差别较大的冷却速度...文章编号:1004-0609(2012)02-0343-07 热处理对不同冷速Al合金共晶相形貌及含量的影响 赵光伟1,李新中1,徐达鸣1,郭景杰1,傅恒志1,贺跃辉2,杜 勇2 (1. 哈尔滨工业大学 材料科学与工程学院,哈尔滨 150001； 2. 中南大学 粉末冶金国家重点实验室,长沙 410083) 摘 要:选取成分为Al-5.17Cu-2.63Si(合金......
such as Al2O3, B4C and SiC by powder metallurgy [6-9]. TiC was not studied enough for 7xxx Al alloys as reinforcement in nano size scale. Excellent properties of TiC motivated authors to fabricate Al 7068- based... Experimental 2.1 Materials and fabrication Commercial powder mixture of Al, Zn, Mg, Cu and Zr was applied to fabricating Al alloy (Al-7.8%Zn- 2.6%Mg-2%Cu-0.1%Zr) by powder metallurgy (PM) method......
: vanadium; redox flow battery; graphite felt; diffusion coefficient. 1 Introduction The vanadium redox flow battery proposed by SKYLLAS-KAZACOS et al[1-3], becomes the most practical candidate... species reactions, which accelerate electron transfer reaction and oxygen transfer. References [1] SKYLLAS-KAZACOS M, RYCHCIK M, ROBINS R, et al. New all-vanadium redox cell[J]. J Electrochem Soc......
; accepted 13 July 2014 Abstract: 35% SiCp/2024 Al (volume fraction) composite was prepared by powder metallurgy method. The microstructures of SiCp/Al interfaces and precipitate phase/Al interfaces... can be controlled via SiCp oxidation technical parameters. 3) Powder metallurgy method. According to the reactivity between SiC particles and molten Al, powder metallurgy becomes an effective way......
images of Al-MWCNTs composite powders: Fig. 1(a) exhibits powder morphology before planetary milling, Fig. 1(b) shows its magnified image, Fig. 1(c) exhibits powder morphology after planetary milling... of MWCNTs inside soft aluminum powder. Figure 2 shows Raman spectra of initial MWCNTs, powder after milling and composite sheet, respectively. Al-MWCNTs composite sheet and powder exhibit two broad peaks......
mechanical performance requirements. ATTAR et al [12] studied the effect of powder particle shape induced by milling time on the density and compression properties of SLM-processed Ti-TiB composite samples. It was found that prolonged milling results in a higher shape irregularity of the powder mixture, and the SLM sample has a lower relative density and compression properties. GU et al [13......
from sodium chromate solution during vanadate anion removal by adding excess lime in the current lime-free roasting process [1]. CVR contains calcium vanadate (about 3% V2O5) and calcium chromate... from Ca3(VO4)2·xH2O formed in the strong alkaline solution (pH>12) during removal of vanadate in sodium chromate with adding lime. Figure 4 XRD patterns of synthetic CaV2O6·4H2O 3.2 Procedures CVR......
Effect of adding carbon nanotubes on stress of Fe3Al intermetallics PANG Lai-xue(庞来学)1, ZHANG Jin-sheng(张金升)1, XU Jing(徐 静)1, SUN Kang-ning(孙康宁)2 1. Department of Civil Engineering... a powder metallurgy process[4-5]. Ceramic particles can be utilized as reinforcement to improve the high-temperature strength of intermetallic alloys[6-7]. Carbon nanotubes(CNTs) are new allotropic......
