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): 51-68. [31] BENAFAN O, NOEBE R D, HALSMER T J. Shape memory alloy rock splitters (SMARS)-A non-explosive method for fracturing planetary rocklike materials and minerals[R]. NASA/TM-2015-218832, National......
diffraction (XRD) in the grazing incidence geometry with an inclination of 1° with a D5000 Siemens X-ray Diffractometer and Cu Kα radiation (λ=1.5406 ). The diffractograms were registered in the step scan... electrodes for light-emitters [J]. J Alloy Compd, 2017, 724: 813-819. [14] KHAN I, BAUCH M, DIMOPOULOS T, DOSTALEK J. Nanostructured as-deposited indium tin oxide thin films for broadband antireflection......
Technology, 2014, 264: 78-85. [17] FOWLER G, PASHBY I R, SHIPWAY P H. The effect of particle hardness and shape when abrasive water jet milling titanium alloy Ti6Al4V [J]. Wear, 2009, 266(7): 613-620. [18......
there are numerous prominent papers in literatures. KIM et al [18] introduced a building information modelling. QIAN et al [19] and ZHOU et al [20] introduced 3D laser scanner technology for surface quality... detected defects on the surfaces with the accuracy of 86.9%. WANG et al [22] presented an evaluation methodology for 3D surfaces to find the errors by HD metrology. They dealt with flatness of the planes......
]. CRUZ et al [17] reports that eDNA could provide the ability to adhere to carrier surfaces and maintain the stability of biofilm by attaching to other extracellular substances as a skeleton component... technologies such as confocal laser scanning microscopy (CLSM), atomic force microscopy, genomics and proteomics, an increasing number of studies have been conducted on eDNA. OKSHEVSKY et al [19] found......
感耦合等离子体发射光谱仪(ICP-AES)对污酸进行元素检测,污酸中各金属含量如表1所示.其中,砷离子的浓度为4200 mg/L,还含有少量的杂质元素Zn,Sb,Fe,Cu,Mg,Pb,Cr等.利用酸碱中和滴定实验对污酸的酸度进行测定,选取NaOH为滴定中和剂,得到此污酸的酸度为80 g/L. 表2 污酸元素含量 Table 2 Composition of waste...611.28,203.14,597.81和595.96 mg/L,去除效率为85.45%,95.16%,85.77%,85.81%.当改性钢渣用量继续增大时,污酸中的砷去除效果变化不大,因此,选取改性钢渣的用量按固液比为0.04 kg/L时,除砷效果最好. 研究表明,钢渣主要通过吸附和化学共沉淀两种途径实现水体除砷.钢渣虽然主要由钙(Ca),铁(Fe),硅(Si)氧化物组成,但在反应中所能释放的钙,铁离子有限,不能很好地参与反应......
treatment. More importantly, it was reported in 2008 that the structure remained in a fully passive condition after the treatment [5]. To facilitate the implementation of ECE technology, UEDA et al [6] fastened an anode system onto the surface of concrete using ductile fiber-reinforced cementitious composites. Similarly, ZHU et al [7] adopted a carbon-fiber-reinforced polymer as an external anode. JIN......
料的机械性能进行总结和对比. 1.1 金属/SiC 金属/SiC复合材料是以金属作为添加剂的SiC复合材料,因为其金属相熔点较低,故可大幅度提升复合材料烧结性能.BAZARNIK等[4]使用放电等离子烧结(SPS)制备了Cu/SiC复合材料,维氏硬度(HV)达230,屈服应力达420 MPa,极限应力达 385 MPa.王武杰等[5]采用SPS制备Al/SiCp复合材料,其相对密度,热... of a Cu-SiC composite[J]. Materials Science and Engineering: A, 2019, 766: 138350. [5] 王武杰, 洪雨, 刘家琴, 等. SiC颗粒级配对SiCp/Al复合材料微观结构和性能的影响[J]. 中国有色金属学报, 2018, 28(12): 2523-2530. WANG Wujie, HONG Yu, LIU......
; 要:运用第一性原理平面波赝势方法,对D8m-Mo5Si3化合物的空位与反位缺陷的形成能,点缺陷浓度及其电子结构进行计算,研究D8m-Mo5Si3的成键行为,并分析了其点缺陷结构的稳定性.结果表明:D8m-Mo5Si3的晶格常数a=9.6808 ,c=4.9033 ,体模量B0=247.08 GPa.Mo5Si3的成键电荷密度呈现出纺锤状特征,表明了Mo 4d态和Si 3p态之间的局部杂化效应.由形成能的计算结果可知,在富Mo合金中MoSi1缺陷最稳定,在富Si合金中SiMo2缺陷最稳定.究其原因是因为在MoSi1和SiMo2这两种缺陷中Si和Mo原子之间的电荷积累效应得到增强,相互作用增大.结合Wagner-Schottky模型,研究了在2173 K下D8m-Mo5Si3的点缺陷浓度与成分之间的关系,计算结果再次证实了MoSi1和SiMo2是富Mo或富Si合金中最主要的缺陷形式. 关键词......
过比较Fe5Ni4S8和Cu5FeS4各组元PDOS最高峰位置,Fe/Ni/Cu 3d带中心以及S 3p带中心能级,得到硫化物矿相中各金属原子的氧化优先顺序为:Cu5FeS4-(FeII)＞Cu5FeS4-(FeI)＞Fe5Ni4S8-(Fe)＞Fe5Ni4S8-(Ni)＞Cu5FeS4-(FeI)＞Fe5Ni4S8-(S)＞Cu5FeS4-(SI)＞Cu5FeS4-(SII).Fe5Ni4S8和...盖了未反应的低冰镍表面.第一性原理计算结果显示,Cu5FeS4和Fe5Ni4S8矿相氧化活性位点都是铁原子,并且金属与硫的化学键有明显的共价键特征；硫化物矿相中过渡金属原子的氧化优先顺序依次为:Cu5FeS4矿相中(Fe)＞Fe5Ni4S8矿相中(Fe)＞Fe5Ni4S8矿相中(Ni)＞Cu5FeS4矿相中(Cu). 关键词:低冰镍；界面反应；氧化分解；第一性原理计算；镍黄铁矿 文章编号......
