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Processing, microstructure, and properties of laser remelted Al2O3/Y3Al5O12(YAG) eutectic in situ composite SU Hai-jun(苏海军), ZHANG Jun(张 军), LIU Lin(刘 林), FU Heng-zhi(傅恒志) State Key Laboratory... the high-performance Al2O3/Y3Al5O12(YAG) eutectic in situ composite. The microstructure characteristic and solidification behavior were studied using scanning electron microscopy(SEM), energy......
Preparation and properties of C/C-SiC brake composites fabricated by warm compacted-in situ reactionZhuan Li,Peng Xiao,and Xiang Xiong State Key Laboratory of Powder Metallurgy,Central South... compacted-in situ reaction.The microstructure,mechanical properties,tribological properties,and wear mechanism of C/C-SiC composites at different brake speeds were investigated.The results indicate......
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; accepted 15 September 2006 Abstract: In situ A356/TiB2 composites were successfully fabricated via in-melt reaction among aluminium alloy, K2TiF6 and KBF4 compounds. The composite was examined... is significantly lower than that of AlB2 and TiB2 [11], resulting in a dominant reaction of in situ formation of TiB2 occurred in the system. Fig.1 XRD pattern of as-fabricated A356/8%TiB2 composite......
Fabrication of in situ Ti2AlN/TiAl Composites by Reaction Hot Pressing and Their Properties孙东立,SUN Tao,WANG Qing,HAN Xiuli,GUO Qiang,WU GaohuiSchool of Materials Science and Engineering,Harbin...(reaction hot pressing) using Ti, Al and TiN powders as starting materials. The synthesis process includes four stages: first, the reactions between Al and Ti powers and between Al and TiN powders......
Synthesis and Characterization of In Situ(Al2O3–Si)/Al Composites by Reaction Hot PressingEl Oualid Mokhnache,Guisong Wang,Lin Geng,Balasubramaniam Kaveendran,Lujun HuangSchool of Materials Science and Engineering,Harbin Institute of Technology摘 要:In situ(Al2O3–Si)/Al composites with a reinforcement volume fraction of 10% were synthesized from the Al–Si......
文章编号:1004-0609(2009)07-1322-10 NaOH分解含铟铁矾渣新工艺 陈永明,唐谟堂,杨声海,何 静,唐朝波,杨建广,鲁君乐 (中南大学 冶金科学与工程学院,长沙 410083) 摘 要:提出NaOH分解含铟铁矾渣新工艺,考察NaOH用量,液固比,温度和时间对铁矾渣分解率的影响,并讨论铁矾渣中杂质金属,如Zn,In,Cu,Cd,Pb...NaOH分解过程中,铁矾渣中的铁主要以Fe3O4形式沉淀入渣；分解渣中Fe,In和Zn的含量分别为38.81%,0.23%和12.89%；经稀盐酸选择性浸出铟和锌后,进一步磁选富集可作为炼铁原料. 关键词:铁矾渣；铟；湿法炼锌；分解 中图分类号:TF 803.2 文献标识码:A Novel technique......
DOI: 10.11817/j.issn.1672-7207.2018.08.005 低含铟浸出渣中铟的氧压酸浸实验及动力学研究 李学鹏1,刘大春1,王娟2 (1. 昆明理工大学 真空冶金国家工程实验室,云南 昆明,650093； 2. 云南大学 数理与统计学院,云南 昆明,650093) 摘要:采用氧压酸浸的方法浸出低含铟浸出渣中的铟,研究铟的氧压酸浸过程及动力学；研究搅拌速率,浸出温度,初始硫酸浓度,氧分压,物料粒度对铟浸出率的影响.研究结果表明:在浸出温度为220 ℃,物料粒度为75~80 μm,硫酸浓度为1.53 mol/L,转速为650 r/min,氧分压为0.60 MPa时,铟,锌和铜的浸出率分别为99.5%,95.36%和95.94%；铟的浸出过程符合未反应收缩核模型,前期受化学反应控制,然后转为混合控制,后期受固体产物层扩散控制；化学反应控制和固体产物层扩散控制过程的表观......
Synthesis and reaction behavior of calcium silicate hydrate in basic system LIU Gui-hua(刘桂华), HE Qiang(贺 强), LI Xiao-bin(李小斌), PENG Zhi-hong(彭志宏), ZHOU Qiu-sheng(周秋生) (School... of reaction time. The decomposition rate is all less than 1.2% in caustic solution, and XRD pattern of the residue after reaction with caustic solution is found as the same as that of original calcium silicate......
Microstructure Characteristics and Mechanical Properties of Nb-17Si-23Ti Ternary Alloys Fabricated by In Situ Reaction Laser Melting DepositionWei Liu,Hua-Ping Xiong,Neng Li,Shao-Qing Guo,Ren-Yao... was attempted by in situ reaction laser melting deposition(LMD)with dual powder feeding method from Nb-28 at.% Ti powder mixture and pure Si powder. The microstructures of the asdeposited alloys were examined......
