Search results

Therefore many kinds of pretreatment methods have been developed to avoid the use of chromates, including inorganic inhibitors like molybdates, permanganates, vanadates, and tungstates, or adhesion promoters like fluozirconates, fluotitanates, organosilanes, WPU, etc. [5-13] Recently, a corrosion resisting surface-treated solution for galvanized steel sheet, in which a base coating essentially formed from a silicate compound, fluorometallate anions, a phosphate anions and organic resin, has been developed and put into practice in many iron and steel factories.
So an environmental friendly passive films based on organic polymer and inorganic corrosion inhibitor can be designed, in which organic polymer is selected to form networks and act as the guarantee for the film´s adhesion and strength and inorganic compound is selected to act as corrosion inhibitor like Cr6+.
That is the main aim in present work.
Lu: Journal of Iron and Steel Research, Vol. 19(2007), No.3, p. 88-92
Ando, A.Matsuzaki, T.Kubota and M.Yamashita: 5th International Conference on Zinc and Zinc Alloy Coated Steel Sheet ( GALVATECH’2001), Verlag Stanleisen Gmbh , Dusseidorf, 2001, p. 655

Chemical composition of 45 steel/% Chemical name C Mn Fe S W Content 0.43-0.5 0.69-0.9 0.04 0.05 1.11 Cemented carbide is a hard alloy alloy material of metal, which is an alloy material made of a hard compound of a metal and a bonding metal by a powder metallurgy process [17].
Journal of Engineering for Industry, 1985, 107(4):349-354
Drilling process optimization for graphite/bismaleimide–titanium alloy stacks[J].
Journal of Jilin University of Technology (Natural Science Edition), 2002, (01):37-41
Journal of Mechanical Engineering, 2014, 50(1):178

The design and manufacture of cermet-type composite materials aims to obtain materials with physical, mechanical, and chemical properties that are better than those of their component materials.
The phase corresponded to Grossite (CaAl2O7) is expected because, in the bibliography, it has been reported that due to the pressing process, there are zones with uniformity of quantities of CaCO3 and Al2O3 by which CaAl2O4 compounds already formed interact with zones rich in CaCO3 and form phases like the one reported in the work with a greater number of oxygen atoms. [6], [14].
Ortega-Avilés, Sea snail shells for synthesis of ceramic compounds reinforced with metallic oxide: Microstructural, mechanical, and electrical behavior, Mater Today Commun. 28(2021)
Prattis, Kinetic study of the thermal decomposition of calcium carbonate by isotermal methods of analysis, The European Journal of mineral Processing and Enviromental Protection. 1-2 (2001) 89–102
Zawrah, Improvement of wetability, sinterability, mechanical and electrical properties of Al2O3-Ni nanocomposites prepared by mechanical alloying, Ceram Int.43-4 (2017) 3576–3582

Iron-based alloys (steel and cast iron) are currently the main structural materials that provide a high level of mechanical and technological properties along with a relatively low cost.
Additionally, the MA allows you to planning ceramic particles of all metals, which further increases the wettability. [3] To modify the alloys mainly used compositions with a tungsten content of 50 ... 80% in terms of WC.
[2] Changes in the structure and properties of the alloys in their modification by carbide-silicon nanopowders / Korotaeva, Korotaeva, A.
[6] On the crystallization of alloys of the system Cu–Ni–Mn / VA Poluboyarov, Z.
Zhdanok, and Victor. // Journal of Siberian Federal University.

Owing to the impact-fusion coating manufacturing process, only ductile metals (Zn, Ag, Cu, Al, Ti, Nb, Mo, etc.), alloys (Ni-Cr, Cu-Al, Ni alloys, McrAlYs, etc.) and polymers can be sprayed.
These include pure metals (Ag, Al, Cu, Fe, Mo, Ta, Ti, Zn, etc.) low alloy steels, Ni-Cr alloys, Ni base superalloys, Stainless steel, Zn alloys, Al alloys, Cu alloys, MCrAlY, etc.
At last Fe-Al intermetallic compounds have been produced using a ball-milled metastable Fe-Al-WC powder, spraying it by cold spray and then annealing coatings at a temperature over 500°C to form Fe-Al intermetallic compounds.
� Self fluxing alloys: It results in rather dense and hard coatings [105-108].
These self-fluxing alloys can be reinforced with hard ceramic particles such as WC [109]

The selection of these materials, with the aim of the lowest possible mass of the sandwich composite at a constant bending stiffness, is displayed systematically within this work.
Within this work, a systematic material selection of the materials for the face sheet and core of sandwich structures is carried out with the aim to optimize the stiffness-to-weight ratio.
Both foam types were based on an aluminium alloy, the boundary densities were 10-25% for the closed-cell foam, and 7- 20% for the open-cell foam.
Yao, Diffusion bonding in fabrication of aluminum foam sandwich panels, Journal of Materials Processing Technology, 230:35-41, 2016 [14] M.
Koch, Manufacturing hybrid lightweight compounds of closed-cell aluminium foam and thermosoftening plastics in injection moulding processes, 58th IWK, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, 2014 [15] D.

Aim at the above status, a novel high-efficiency and compact process to fabricate copper cladding aluminum wire is proposed by authors [12~14] .
The microstructure of aluminum core, the eutectic microstructure of Cu-Al alloy interlayer and the microstructure of copper cladding layer can be seen obviously.
Hung: Journal of Materials Processing Technology Vol. 104 (2000), p. 226 [8] H.J.
Kim: Journal of Material Processing Technology Vol. 67 (1997), p. 24 [9] H.J.
Kwonb: International Journal of Mechanical Sciences Vol. 44 (2002), p. 247 [11] C.G.

Goldsmith et.al [106] made an automated approach to filter out 4,000 solvent free structures out of a Cambridge Structure database of 600,000 + compounds for their porosity, surface area, and total theoretical H2 uptake for both gravimetric and volumetric values.
The wide variety of porous solids being tested for hydrogen storage was recently further enriched by reports on nanotubes made of inorganic compounds having a varied chemical composition [117] (e.g., BN, NiO and TiO2).
Alloys Compd. 404–406 (2005) 399-401
Alloys Compd. 446/447 (2007) 380-384
Alloys Compd. 379 (2004) 280-289

The yield of cross-linking is enhanced in the presence of polyunsaturated compounds, such as polyfunctional vinyl monomers.
Major advantages of radiation curing include reduction or elimination of volatile organic compounds (VOCs) and it is faster process than chemical curing.
Graft copolymers can be considered as polymeric alloys.
Chemical composition of the wastewater consists of organic dyes, surfactants and other organic compounds.
Table 5 summarizes the dose needful for removal of aromatic compounds from water.

The samples were produced either by wet lay-up or by press moulding of MgO thickened prepregs (similar to sheet moulding compound).
The following test matrix was used - 6 specimens were tested before treatment; - 18 specimens underwent ageing treatment according to ASTM G 36 standard (this environment provides an accelerated method of ranking the relative degree of stress-corrosion cracking susceptibility for stainless steels and related alloys in aqueous chloride-containing environments). 9 specimens underwent treatment with pH = 7 (Fig. 6a) in an aqueous solution with 42% MgCl2. 9 specimens underwent treatment with acidic pH7 (Fig. 6b) adding to the previous aqueous solution HNO3, (1.5 cm3 in volume at a concentration of 67%).
The tests of accelerated ageing and water absorption have evidenced the resistance of the material adopted to the aggressiveness of the marine atmosphere; in the realization of real prototypes it is previewed however the utilisation of waterproofing treatments on the exposed parts, to the aim to improve the mechanical property of the composite.
Olivari, Composite Boat Hulls with Bamboo Natural Fibres, International Journal Materials and Product Technology, 36, 1/4 (2009) 73-89