11 Result(s)
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Article
Phase evolution, microstructure, and gas-sensing characteristics of the Sb2O3–Fe2O3 system prepared by coprecipitation
Precursor powders with antimony-to-iron (Sb/Fe) atomic ratios ranging from 0 to 2.0 were prepared by chemical coprecipitation. The origin of enhanced gas-sensing behavior at a higher calcining temperature was ...
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Article
Effect of aluminum nitride on the properties of cordierite
The low dielectric constant and thermal expansion coefficient of cordierite are two attractive properties for the material to be used in electronic applications. However, compared to some other materials such ...
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Article
Improvements in α-Fe2O3 ceramic sensors for reducing gases by addition of Sb2O3
The microstructure, electrical properties and gas-sensing characteristics of Sb-doped α-Fe2O3 were investigated. Powder precursors with Sb/Fe = 0–0.1 were prepared by chemical coprecipitation method. Sb-doped α-F...
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Article
Ultrasonic through-transmission method of evaluating the modulus of elasticity of Al2O3–ZrO2 composite
The elastic properties of Al2O3–ZrO2 composite were determined from ultrasonic velocity measurements, and were found to be dependent upon the amount of ZrO2 phase, the compacting pressure of the green ceramic ...
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Article
Fabrication of translucent magnesium aluminate spinel and its compatibility in sodium vapour
The sintering behaviour of magnesium aluminate spinel on both sides of the stoichiometry has been investigated. It is found that the composition close to the stoichiometric composition, but slightly enriched i...
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Article
The strength and fracture properties of glass-ceramics
The effect of an isothermal heat-treatment on the strength and fracture surface energy of a glass-ceramic derived from a lithium silicate glass has been studied. It is found that the strength and effective sur...
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Article
A transmission electron microscope study of glass-ceramics
A technique for preparing thin foils of glass-ceramics for transmission electron microscopy has been developed, using a combination of chemical, abrasion and ion-beam machining. This has permitted a study of t...
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Article
The strength and fracture toughness of polycrystalline magnesium oxide containing metallic particles and fibres
The transverse rupture strength of hot-pressed and annealed composites of magnesium oxide and dispersed metallic phases (nickel, iron, cobalt) increases with increasing volume fraction of metal and annealing t...
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Article
The strength and fracture toughness of polycrystalline magnesium oxide containing metallic particles and fibres
The transverse rupture strength of hot-pressed and annealed composites of magnesium oxide and dispersed metallic phases (nickel, iron, cobalt) increases with increasing volume fraction of metal and annealing t...
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Article
The microstructure and fracture properties of MgO crystals containing a dispersed phase
MgO crystals containing up to 40% by volume of magnesioferrite and up to 2% by volume of iron and nickel were produced by a diffusion technique followed by appropriate heat treatments. Magnesioferrite precipit...
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Article
The microstructure and fracture properties of MgO crystals containing a dispersed phase
MgO crystals containing up to 40% by volume of magnesioferrite and up to 2% by volume of iron and nickel were produced by a diffusion technique followed by appropriate heat treatments. Magnesioferrite precipit...
