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Kinetics and mechanism of formation of forsterite (Mg2SiO4) by solid state reaction of MgO and SiO2

G. W. Brindley、Ryozo Hayami1965-09-01Philosophical magazine

The development of forsterite, Mg2SiO4, by solid state reaction in mixed powders of MgO and SiO2 in various mole ratios at temperatures 1100–1400°c and for times up to 144 hrs is followed by quantitative x-ray diffraction measurements. Powders are used consisting of coarse (15 μ) particles of one component in a fine-g…

Nuclear materials and radiation effectsMagnesium Oxide Properties and ApplicationsAdvanced ceramic materials synthesis

Modified avrami equation for the bulk crystallization kinetics of spherulitic polymers

Ian H. Hillier1965-09-01Journal of Polymer Science Part A General Papers

Abstract An explanation of the anomalous fractional values of the Avrami exponent found for the crystallization of a number of polymers is presented. The interpretation is based on a model which postulates the constant radial growth of spherulites, followed by an increase in crystallinity within them by a first order…

Polymer crystallization and propertiesPolymer Science and PVCPolymer Nanocomposites and Properties

Oxidation Kinetics of Single‐Crystal SrTiO 3

Anna Paladino1965-09-01Journal of the American Ceramic Society

The oxidation kinetics were determined for single‐crystal SrTiO 3 by measuring the time and temperature dependence of the weight gain of reduced crystals. The oxidation can be described as a diffusion‐controlled process. The calculated diffusion coefficients between 850° and 1460°C are represented by D = 0.33 exp (‐22…

Semiconductor materials and devicesFerroelectric and Piezoelectric MaterialsElectronic and Structural Properties of Oxides

The deformation of magnesium single crystals

P. B. Hirsch、J. S. Lally1965-09-01Philosophical magazine

Magnesium single crystals were deformed at room temperature. Dislocation distributions were determined by transmission electron microscopy of sections of crystals deformed by various amounts. In stage A the dislocations are mainly in the form of edge dipole bands. No dislocations with non-basal Burgers vectors were fo…

Microstructure and mechanical propertiesMagnesium Alloys: Properties and ApplicationsAluminum Alloy Microstructure Properties