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R. SEKAR Electroplating and Metal Finishing Technology Division, Central Electro Chemical Research Institute, Karaikudi 630006, Tamil Nadu, India Received 18 May 2016; accepted 24 December 2016... solutions [J]. Hydrometallurgy, 2009, 100: 60-64. 添加剂对从无氰电解质中电沉积铜的协同效应及其结构和形貌特征 R. SEKAR Electroplating and Metal Finishing Technology Division, Central Electro Chemical Research Institute, Karaikudi......
of the bimetallic specimen are shown in Fig. 1. The chemical compositions of the CP-Ti (Grade 2) and Al-7075 alloys obtained by the emission spectrometry method are also listed in Tables 2 and 3... procedure, as shown in Fig. 2. Table 2 Chemical composition of Grade 2 CP-Ti (mass fraction, %) Table 3 Chemical composition of Al-7075 alloy (mass fraction, %) Fig. 1 Schematic illustration......
the density from image analysis; however, as the copper is a soft material, some pores are filled during the polishing stage, and the relative density is overestimated. The relative density of coatings... carbide particles [J]. Wear, 2011, 270: 591-597. [18] LARIONOVA T, KOLTSOVA T, FADIN Y, TOLOCHKO O. Friction and wear of copper–carbon nanofibers compact composites prepared by chemical vapor deposition......
in the alloy, which may lead to porosity in the composites. Further, processing of the composites at a high temperature can result in chemical reactions with the environment. Previous studies have reported... chemical composition of Al2024 alloy (mass fraction, %) [33] Further, SiC particles were used as a primary reinforcement for fabrication of hybrid composites. It has been revealed that they are chemically......
chemical activity of magnesium and to the unstable imperfect natural oxide film on its surface [3,4]. Plasma electrolytic oxidation (PEO) treatment of metals, derived from traditional anodizing... was not detectable for all the coatings. In fact, in these conditions, profilometric measurements on wear scars only highlighted the presence of shallow and non-uniform polishing marks, combined......
with SiC abrasive papers from P500 to P2500, followed by polishing with 3 μm diamond suspension and then with a mixture of OPS and 1 μm diamond suspension. The specimens used for optical microscopy (OM... established network being present in the ZK40-CaO alloy. No discrete particles of CaO were found in the microstructure. Table 1 Actual chemical compositions measured using X-ray fluorescence (Ca......
characterization Specimens were cut and then ground using abrasive papers, followed by polishing using a suspension with 0.5 μm alumina particles to obtain mirror-polished surfaces. The polished samples...) Chemical composition and thermomechanical processing history affect the formation of secondary phases such as Ti3Ni4, Ti2Ni and TiNi3 in the alloy [25,26]. Gibbs free energy studies indicate......
almost entirely covered the area of the chalcopyrite surface. 3 Results and discussion 3.1 Mineral composition The crude ore belonged to a low-grade copper-nickel mineral whose chemical analysis data... reaction speeds on the chalcopyrite surface could have been due to different surface conditions after polishing. Furthermore, the absence of green and red surface layers suggested a new interfacial......
. And the TEM foils were prepared by a twin-jet electro polishing unit with a solution of 30% nitric acid and 70% methanol at –30 °C. High-angle annular dark-field scanning transmission electron microscopy.... 2 Experimental The hot rolled plates of Al–Cu–Li–Mn–Zr alloys were provided by Southwest Aluminum (Group) Co., Ltd., China. The chemical composition of this alloy is Al–2.8Cu–1.4Li– 0.3Mn–0.1Zr (wt......
matrix composites reinforced with particles [3,4]. Boron carbide is harder and lighter than silicon carbide and alumina ceramics [5]; it has excellent thermal and chemical resistance and is also used... 2 Experimental settings 2.4 Characterization Polishing of cross sections, normal to the compacted direction, was completed on a standard series of grit papers and diamond polishes. The morphology......
