Showing papers in "Materials Letters in 1996"

TL;DR: In this article, the mechanical properties of carbon fiber reinforced composites and Al2O3particles dispersed carbon fiber hybrid reinforced composite were investigated, and the effects of hybridization effects on mechanical properties with nano-and micron-sized Al 2O3 particles were discussed.

TL;DR: In this article, a polycrystalline nickel-zinc ferrite powder was obtained by chemical coprecipitation involving the corresponding metal nitrates and sodium hydroxide.

TL;DR: The results of an XPS study of sol-gel-derived silicon oxycarbide glasses are presented in this paper, where it was shown that the fracture surface is richer in carbon compared with the bulk.

TL;DR: In this paper, three different routes were used to fabricate ceramic particle dispersed epoxy composites, and the wet ball-milling technique was found to be effective for homogeneous dispersion of ceramic particles.

TL;DR: In this paper, a microemulsion-mediated chemical reaction was used to synthesize acicular particles of γ-Fe2O3 with an equivalent spherical diameter (ESD) of 7-8 run.

TL;DR: In this paper, a submicrometer-sized hydroxyapatite powder was synthesized via an inverse microemulsion processing route, which uses cyclohexane as the oil phase, mixed poly(oxyethylene) 5 nonyl phenol ether (NP-5) and poly(oxethylene 9 nonymphenol ether) as the surfactant phase, and an aqueous CaCl 2 solution as the water phase, which led to a significant refinement in the particle size, particle size distribution, and the degree of particle aggl

TL;DR: In this paper, fly ash was converted into zeolites, which then can be used as ion exchangers for waste treatment applications, and the ion exchange capacity of the treated fly-ash was examined.

TL;DR: In this paper, the microstructure and nonlinear currentvoltage characteristics of ZnO-V 2 O 5 ceramics sintered at 900 °C were investigated.

TL;DR: In this paper, a cast nickel base superalloy was analyzed and the possible mechanisms of corrosion based on the corrosion compounds were discussed. But the results were limited to the case of hot corrosion and internal sulphidation.

TL;DR: In this article, the size of nanophase TiO2 was determined by low-frequency Raman scattering, and the results showed that anatase was the dominant phase and brookite was dominant phase.

TL;DR: In this paper, a microemulsion mediated method was used to synthesize ternary metal oxides (BaTiO3, ZrO2, BaZrO3 and BaTiO2) as nanometre-sized particles using micrographs and X-ray diffraction.

TL;DR: In this paper, X-ray diffraction (XRD) results show that this niobate nucleates from the amorphous precursor, with no intermediate phases, at low temperature (500 °C).

TL;DR: In this paper, Nanocrystalline Cr 2 O 3 particles were synthesized in a microwave plasma using chromium hexacarbonyl as precursor and electron microscopy revealed that the particle diameter is, depending on the process parameters, in the range from 7 to 9 nm or from 5 to 6 nm.

TL;DR: In this paper, phase pure bismuth titanate was prepared at 750 °C from the corresponding hydroxide precursors, and the sintering behavior of this powder was evaluated in comparison with powder obtained from a sol-gel process.

TL;DR: In this paper, the relationship between the fracture toughness and the fracture surface appearance of the composites has been investigated using a linear elastic fracture mechanics approach, and the authors showed that fracture toughness was significantly increased by choosing the larger particle size of the dispersed second phase and low temperature testing environment.

TL;DR: In this paper, lead, zirconium and titanium were coprecipitated from their aqueous salt solutions using oxalic acid and the precipitate on heating to 850 °C gave phase pure PZT powder which showed good sinterability.

TL;DR: In this paper, a polycrystalline material of the spinel-alumina solid solution, MgO · nAl2O3 (1 ⩽ n < 3), was fabricated by reaction sintering using commercial spinel, magnesia and alumina powders as starting materials.

TL;DR: In this article, a high-density Al2O3Ni composite with a particular microstructure which ensures superior mechanical and magnetic properties has been developed by hydrogen reduction of NiO to Ni and subsequent hot-pressing of Ni mixed powder.

TL;DR: In this paper, the effects of different coupling agents on the mechanical properties of the TiO 2 particulate filled epoxy composite composites were investigated and it was suggested that a strong interfacial bonding between the filler and the matrix existed when the titanate coupling agent was used and was explained by the adhesion model.

TL;DR: In this paper, a dispersed clay/polymer nanocomposite was prepared by joining, via a cationic exchange reaction, surfactant monomers to clay platelets and subsequently polymerizing them with acrylamide dispersion.

TL;DR: The Sn2P2Se6 single nanocrystallites embedded in a photopolymeric oligoetheracrylate host were manufactured and structural and electrooptical investigations unambiguously show a possibility to obtain specimens which have properties similar to the properties of bulk single crystals as discussed by the authors.

TL;DR: In this article, the temperature dependence of the dielectric constant in high purity BaTiO 3 powders of various particle size was investigated using high purity X7R ceramic capacitor materials.

TL;DR: In this article, X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to obtain a uniform particle size of 70 nm for amorphous and hexagonal selenium powder.

TL;DR: In this article, the resistance changes as the conducting silver was converted to its nonconducting oxides were calculated from resistance changes, and the reaction rates of polyethylene, PTFE, carbon and silica were established by exposing sensors comprising thin film overlays of the test material on a 300 A silver substrate to atomic oxygen.

TL;DR: In this article, the perovskite structure of Lanthanum strontium cobalt iron oxides was synthesized using citrate and glycine complexation methods, and the cubic phase was identified as a perovsite, La 0.6 Sr 0.4 − x Co 0.2 Fe 0.8 O 3 − δ, with a large degree of Strontium deficiency ( x = 0.20 to 0.25).

TL;DR: In this paper, a critical slip parameter such as the conductivity is proposed as a key factor to take into account in electrophoretic deposition (EPD) experiments, after a careful study.

TL;DR: In this article, an extended X-ray absorption spectroscopy (EXAFS) was used to determine the local structure of luminescence centres in Eu 3+ doped, Eu-Bi doped and Eu Tb doped nanoscale yttrium oxide as well as Eu 2.5 + doped Eu silicate.

TL;DR: In this article, an analytical electron microscopy (AEM) analysis of the SiC 2-based ceramic produced by self-propagating high-temperature synthesis (SHS) has been carried out.

TL;DR: The mechanical properties of commercially pure (CP) titanium can be improved by controlled additions of the interstitial elements oxygen (O), nitrogen (N), and carbon (C) as well as iron without sacrificing ductility as discussed by the authors.

TL;DR: In this paper, Cadmium oxide thin films were prepared by DC reactive magnetron sputtering using a Cd target in nitrogen and oxygen atmosphere using X-ray diffraction (XRD), Rutherford backscattering spectrometry (RBS), Auger electron spectroscopy (AES), optical transmittivity, Hall effect, and thermoelectric power.