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, exploitation and application of magnesium-rare earth alloy as a structure material[J]. Journal of Rare Earths, 2004, 22(1): 40-47. [5] 许延辉, 刘海蛟, 崔建国, 等. 包头混合稀土矿清洁冶炼资源综合提取技术研究[J]. 中国稀土学报, 2012, 30(5......
, KULESHOV N V, MONCORGE R. Excited state absorption and passive Q-switch performance of Co2+ doped oxide crystals[J]. Journal of Alloy and Compounds, 2002, 341: 366-370. [7] VOLK Y V, DENISOV I......
条件.针对硫酸浸出液开发了先高温结晶制取一水硫酸镁再低温结晶制备硼酸工艺.结果表明:浸出温度为99 ℃,酸用量为理论用量的95%,浸出液固比为6:1,浸出时间为90 min时,B浸出率为98.76%,Mg浸出率达到74.32%.通过灰色关联分析理论对Mg的浸出率进行预测,预测值为75.06%,预测结果和实验结果具有较好的一致性.制得的一水硫酸镁纯度为95.42%,硼酸的纯度达到99.27%. 关键... to solid ratio of 6:1. Under these conditions, the leaching rates of B and Mg are 98.76% and 74.32%, respectively. The leaching rate of Mg predicted by gray relational theory and the predictive value......
of Co-Ni-Mn alloy[J]. Chinese Journal of Inorganic Chemistry, 2006, 22(11): 2006-2010. [15] KIM Y, KIM H S, MARTIN S W. Synthesis and electrochemical characteristics of Al2O3-coated LiNi1/3Co1/3......
,J·mol-1·K-1;T为热力学温标,K.得到钼精矿焙烧过程中固相反应的与T的关系. 钼精矿在氧化焙烧过程中,辉钼矿,黄铁矿和黄铁矿等硫化物发生氧化反应生成各种氧化物,反应式如下所示: MeS+O2=MeO+SO2(g)(Me为Mo,Fe,Cu,Mg,Ca等)  ...烧的环境下,MoO3将与一些伴生元素的金属氧化物或硫化物氧化生成的金属氧化物相互作用生成钼酸盐,其反应式如下所示: MeO+MoO3=MeMoO4(Me为Mg,Fe,Cu,Ca等) (5) 焙烧过程钼酸盐生成的热力学分析如图6所示.在298~1400 K的温度范围内,金属氧化物与MoO3的反应均能自发进行.金属氧化物与固态MoO3生成钼酸盐的反应趋势由大到小的顺......
行,浸出温度较低.主要研究了机械活化对钛铁矿的结构,形貌,粒度及浸出效果的影响.最终将Ti和Si富集在渣中,而Fe,Mg,Mn,Al和Ca等富集在浸出液中,将水解钛渣煅烧得到了品位高于90%的金红石型TiO2. 1 实验 1.1 实验原料 实验原料为攀枝花钢铁有限责任公司钛业分公司生产的钛精矿,矿粉粒度5~180 μm,矿粉的主要化学组成见表1. 表1 钛铁矿的... distribution of ilmenite activated for 2 h with different ball/ilmenite ratio 图3所示为钛铁矿在活化不同时间后的XRD谱.由图3可知,未活化的钛铁矿衍射峰尖锐,除含有主物相FeTiO3(六方晶系,空间群R-3)外,还含有(Mg, Fe, Al)6(Si, Al)4O10(OH)8相,说明部分的Mg,Al,Si杂质是以晶态形式存在.而在机械活......
on the microwave properties of Fe-Cr-Si-Al alloy flakes[J]. Materials Science and Engineering, 2007, 466(1/2): 178. [8] Rashad M M, El-Sayed H M, Rasly M, et al. Magnetic and dielectric properties......
金属学报, 2014, 24(5): 1293-1299. LIU Ming, WANG Zhen-guo, HUANG Wei-jiu. Micro-scale abrasive wear behavior of medical material TLM alloy in Hank’s simulated body fluids[J]. The Chinese Journal......
-ling, HUANG Zhen-hua, YU Qiang, CHEN Jin-hua, KUANG Ya-fei. Catalytic graphitization of PAN-based carbon fibers with electrodeposited Ni-Fe alloy[J]. Transactions of Nonferrous Metals Society of China...; 文献标志码:A Microstructure difference on skin and core of domestic PAN-based carbon fibers characterized by Raman spectroscopy WU Shuai, LIU Yun-qi, GE Yi-cheng, RAN Li-ping, PENG Ke, YI......
:80 ℃碱洗(15% NaOH)→水洗→酸洗(15% HCl)→水洗→烘干→天平称质量m1(精确度为1 mg)→轻微酸洗→水洗→65 ℃助镀1 min(助镀剂为150 g/L ZnCl2+150 g/L NH4Cl)→烘干→浸锌→取出水冷→洗去合金层(15% HCl+2.5 g/L六次甲基四胺溶液)→烘 干→天平称质量m2.浸锌时间分别为1,3,24,72,168,720 h.镀锌金相实验用于观察不...(S1): s730-s733. JIANG Peng, LIU Xi-lin, YAN Fei-hao, SONG De-jun. Effect of Fe element on microstructure and properties of titanium alloy welding seam[J]. The Chinese Journal of Nonferrous Metals......