Materials Literature
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Thermal spray processes are widely used in industries to compensate for worn surfaces of different power transmission steel shafts. These include plain carbon, alloyed and stainless steels. This comes as a means of saving the worn parts by reusing them after they have been thermally sprayed by suitable wear-resistant…
A simplified and low-cost spray technique using perfume atomizer is employed for the fabrication of nanocrystalline antimony + fluorine doped tin oxide films (SnO2: Sb:F) from aqueous solutions of SnCl2 precursor. The structural studies showed that the grain size of the films increases from 32 nm for undoped film to 7…
Influence of reaction temperature, molar ratio of benzene to 1-alkenes, weight of catalyst and length of hydrocarbon chain of 1-alkenes were tested in alkylation of benzene by 1-alkenes. The liquid-phase alkylation was carried out in autoclave at autogeneous pressure. Synthetic zeolites of Y-type and mordenite in H-fo…
This article presents an original concept of warp-knitting machine construction with more than two needle combs. The technical and technological parameters of the warp-knitting machine with even and odd numbers of needle combs were characterised. The geometry of mutual positions of the basic machine elements were dete…
The improvement of mass transfer between glycerol and hydrocarbon phases during glycerol etherification with isobutene can be achieved by emulsifying the reaction mixture. This aspect was evidenced by performing an experimental study on glycerol etherification with isobutene using a cross linked cationic ion exchange…
Ulnaria Kutzing (1844) and Frenguelli’s Synedra subgenus Ulnaria (Kutzing) Frenguelli (1929), which are typified by S. ulna. Many monographs such as Iconographia Diatomologica, Bibliotheca Diatomologica, etc.) are recognizing and using Ulnaria. Furthermore, with the formal recognition of Ulnaria at the genus level, it…
Nano-crystalline Diamond like Carbon (DLC) film has been grown by Dense Plasma Focusing Method (DPF) using pure graphite Plasma, on different substrate (glass/silica) at different substrate temperature. The films were grown at substrate temperature 100 0 C, 150 0 C & 300 0 C by the high dense plasma of energy 1.3 k Jo…
*, C. Mitterer*, G. Mori**, J. Winkler***, N. Reinfried*** and W. Knabl*** * Department of Physical Metallurgy and Materials Testing, Montanuniversitat, Leoben, Austria ** Department of General, Analytical and Physical Chemistry, Montanuniversitat, Leoben, Austria *** PLANSEE Metall GmbH, Reutte, Austria Room temperat…
To check the feasibility of the use of some building materials such as cement, plaster of paris, lime and sand as gamma ray shielding materials, some parameters of dosimetric interest has been investigated at some incident photon energies (59.54 to 1332 keV). The photon interaction with building materials has been dis…
Ruthenium (Ru) is one of the major fission products contained in the High-Level Radioactive Waste (HLW). During reprocessing spent nuclear fuel, Ru is immobilized with the other fission products in borosilicate glass matrix. Japan Nuclear Fuel Limited (JNFL) currently operates a nuclear reprocessing plant in Japan whe…
Wrightia tinctoria Roxb. R.Br. (family Apocynaceae) bark ethanol extract and isolated steroidal alkaloid fraction (WTSA) was investigated on different experimentally induced diarrhea models of rats, isolated rat ileum, and on enteric bacterium to establish the therapeutic potential. The extract at 500 and 1000 mg/kg d…
This research work investigated the corrosion resistance of nickel plated medium carbon steel in cocoa liquor. It simulated the effect of continuous use of the material in a cocoa liquor environment where corrosion products are left in place. Medium carbon steel samples were nickel electroplated at 4V for 20, 25, 30,…
ABSTRACT: The pollution flashover performance of large tonnage insulators typically used in ±800 kV DC transmission lines were studied in this paper. As V string and double I string would probably be adopted in lines, the influence that structure exerts on pollution flashover voltage has been tested. Test results show…
Graphene shows unusual low-energy electronic excitations described in terms of Dirac fermions. The fractional quantum Hall effect in a bilayer graphene in different Landau levels within the supersymmetric formalism has been studied. The quantized Hall conductivity is found to be σ xy = ± (n+1)v e2 h , where n = 0, 1,2…
Strongly acidic sulfonovaný cation exchanger on polystyrene nanofibrous matrix (Nanospider TM technology) was prepared by simultaneous sulfonation and crosslinking. Weakly basic nanofibrous anion exchanger was prepared after transformation of sulfogroups to sulfochloride by reaction with ethylene diamine. Nanofibrous…
The possibility to reduce soot emissions by means of injecting diesel fuel through a porous injector is investigated. From literature it is known that better oxygen entrainment into the fuel spray leads to lower soot emissions. By selection of porous material properties and geometry, the spray is tunable such that a m…
Neutron irradiation embrittlement of reactor pressure vessel steels (RPVs) is one of the important material ageing issues. In Japan, almost 40 years have past since the first plant started its commercial operation, and several plants are expected to become beyond 40 years old in the near future. Thus, the safe operati…
A three-kilowatt turboshaft engine with a ceramic recuperator and turbine has been designed for small unmanned air vehicle (UAV) propulsion and portable power generation. Compared with internal combustion (IC) engines, gas turbines offer superior reliability, engine life, noise and vibration characteristics, and compa…
Polycrystalline Dy-doped SrTiO3 thin films deposited by pulsed laser deposition (PLD) on CeO2-buffered yttria-stabilized zirconia (YSZ) single crystal substrates showed oxygen sensing characteristics at room temperature. The oxygen gas sensing characteristics depended on the amount of Dy-doping, and 1.5 mol% Dy-doping…
The phase transformation due to mechanical loading in cold-rolled stainless steel 301LN sheets is investigated experimentally. A series of uniaxial tension experiments is performed to quantitatively investigate the effect of initial anisotropy on the martensitic transformation kinetics. Three methods are employed to m…