307 Result(s)
within
**-**a Ding
Characterization and Evaluation of Materials
Classical Mechanics
Materials Science, general
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Article
Deformation behaviour in α/β two-phase super-plastic brass
α/β brass consists of hard α and soft β phase in its superplastic temperature range. Because of the difference between their mechanical properties, the superplastic behaviour of the alloy differs from that of ...
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Article
Deformation behaviour in α/β two-phase super-plastic brass
α/β brass consists of hard α and soft β phase in its superplastic temperature range. Because of the difference between their mechanical properties, the superplastic behaviour of the alloy differs from that of ...
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Article
SEM examination of the oxide-metal interface formed during the aqueous corrosion of a Zr-2.5 wt% Nb alloy
The oxide-metal interface formed during the aqueous corrosion of a Zr-2.5 wt% Nb alloy has been studied by SEM, using a specimen preparation method which also has potential application to other materials conta...
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Article
Theory of hydrogen-assisted crack growth
A model for hydrogen-induced cracking is proposed and developed on the assumption that hydrogen enters the embrittling process zone (EPZ) ahead of the crack-tip and promotes localized plastic flow which is pro...
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Article
The growth of single-crystal fibres directly from source rods made of ultrafine powders
By means of the laser-heated pedestal growth (LHPG) method, the growth of single-crystal fibres directly from source rods made of ultrafine powders is studied in this paper. The ultrafine powders were obtained...
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Article
Surface-enhanced Raman scattering and cyclic voltammetry studies of synergetic effects in the corrosion inhibition of copper by polybenzimidazole and mercaptobenzimidazole at high temperature
The inhibition of copper corrosion by polybenzimidazole and mercaptobenzimidazole at room and high temperature was assessed by in situ surface-enhanced Raman scattering (SERS) and cyclic voltammetry (CV). It was ...
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Article
Interlaminar fracture of carbon-thermoplastic polyimide composites
Mode I interlaminar fracture of a novel amorphous thermoplastic polyimide reinforced with unidirectional carbon fibre has been studied experimentally using double cantilever beam specimens and scanning electro...
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Article
Ageing behaviour of t′-phase in a hot-pressed ZrO2(4 mol% Y2O3) ceramic
The ageing behaviour of unequilibrium tetragonal (t′) phase and its resultant effect on the mechanical properties of hot-pressed ZrO2(4 mol% Y2O3) ceramic have been investigated by means of transmission electron ...
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Article
Dielectric and electrical properties of ordinary Portland cement and slag cement in the early hydration period
The dielectric constant and electrical conductivity of ordinary Portland cement (OPC) with water-cement ratios (w/c) of 0.30, 0.35 and 0.40 were measured for the first 30 h hydration, using a microwave techniq...
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Article
A plastic flow-induced fracture theory for fatigue crack growth
A plastic flow-induced fracture theory for fatigue crack growth is presented. A new formulae for the fatigue stress intensity threshold and the fatigue crack growth rate law are derived by applying the princip...
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Article
Microstructure, chemical reaction and mechanical properties of TiC/Si3N4 and TiN-coated TiC/Si3N4 composites
Silicon nitride containing various compositions of as-received TiC and TiN-coated TiC, were hot pressed at 1800 °C for 1 h in a nitrogen atmosphere. In TiN-coated TiC/Si3N4 composites, TiC reacted first with the ...
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Article
Study of dielectric and electrical properties of mortar in the early hydration period at microwave frequencies
The dielectric constant, ɛ, and electrical conductivity, σ, of mortars with various sand-cement ratios,s/c, were measured for the first 30 h hydration using microwave techniques in the frequency range 8.2–12.4 GH...
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Article
The effect of formulated molecular weight on temperature resistance and mechanical properties in polyimide based composites
This experimental study examines the role of formulated molecular weight between crosslink sites on the temperature resistance and mechanical properties of composites based on a polyimide containing a diphenyl...
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Article
Microstructure and mechanical properties of a Si3N4/Al2O3 nanocomposite
A nanocomposite material fabricated by hot pressing in the form of nanometre-sized Si3N4 particles dispersed in an Al2O3 matrix has been shown to exhibit enhanced mechanical properties compared with monolithic...
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Article
Mechanical behaviour of metal–matrix composite deposits
The electroplating technique is used for producing thin sheets of copper- or nickel-based composites containing different volume fractions of α-alumina dispersions. The microhardness and tensile behaviour of s...
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Article
The effects of aluminium composition on the mechanical properties of reactivity sputtered TiAlN films
TiAlN films were deposited on tool materials through an r.f. bias reactive sputtering process. The effects of the aluminium composition in the films on the hardness, oxidation resistance and wear properties we...
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Article
Interfacial tunnel-type GMR in granular perovskite La-Sr-Mn-O system
The magnetic transport properties in granular perovskite system La1-xSrxMnO3 have been investigated. The spin-dependent interfacial tunneling and the corresponding giant magnetoresistance (GMR) effect have been o...
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Article
Microstructural evolution of Ni-NaCl mixtures during mechanochemical reaction and mechanical milling
The evolution of microstructure of Ni and NaCl mixtures formed by mechanochemical reaction and mechanical milling has been studied using X-ray diffraction, electron microscopy and magnetic measurements. Separa...
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Article
Study of the paramagnetic-antiferromagnetic transition and the γ → ε martensitic transformation in Fe-Mn alloys
The paramagnetic-antiferromagnetic transition and the γ → ε martensitic transformation of Fe-Mn (Mn 15–32 wt%) alloys have been investigated by resistivity, dilatometry and X-ray diffraction (XRD). The results...
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Article
Kinetic study on the surface oxidation of the molten Mg-9Al-0.5Zn-0.3Be alloy
Be addition make the oxide film formed on the molten magnesium alloy denser and tougher, thus the burning of the Mg during melting was suppressed. AES was employed to study the composition of the oxide film gr...
