Characterization of Joule-heated Co-rich amorphous alloys under applied tensile stress by the inductance spectroscopy method

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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Monitoring and characterization of creation of geopolymers prepared from fly ash and metakaolin by X-ray photoelectron spectroscopy method

Environmental Progress & Sustainable Energy ◽

10.1002/ep.12068 ◽

2014 ◽

Vol 34 (3) ◽

pp. 841-849 ◽

Cited By ~ 20

Author(s):

M. Kanuchova ◽

L. Kozakova ◽

M. Drabova ◽

M. Sisol ◽

A. Estokova ◽

...

Keyword(s):

Fly Ash ◽

Photoelectron Spectroscopy ◽

Spectroscopy Method ◽

X Ray

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The Mechanics of Ozone Cracking

Rubber Chemistry and Technology ◽

10.5254/1.3539891 ◽

1962 ◽

Vol 35 (1) ◽

pp. 200-209 ◽

Cited By ~ 8

Author(s):

M. Braden ◽

A. N. Gent

Keyword(s):

Tensile Stress ◽

Crack Growth ◽

Energy Requirement ◽

Critical Energy ◽

Critical Value ◽

Experimental Measurements ◽

Rubber Sheet ◽

Polymer Molecules ◽

Two Factors ◽

Applied Tensile Stress

Abstract Experimental measurements are described of the growth of a cut in a stretched rubber sheet under the action of an atmosphere containing ozone. A well-defined rate of crack growth is obtained, substantially independent of the applied tensile stress when this exceeds a critical value necessary for growth to occur at all. The rate of growth is found to be similar for a number of polymers and principally determined by the ozone concentration when the mobility of the polymer molecules is sufficiently high. When the molecular mobility is inadequate, crack growth is retarded. The critical condition is found to be similar for all the polymers examined, and largely independent of the conditions of exposure; it appears to reflect an energy requirement for growth of about 40 ergs/cm2 of newly-formed surface. The effect of the degree of vulcanization and the presence of additives, including antiozonants, on these two factors has also been examined. The dialkyl-p-phenylene diamines are found to confer protection by raising the critical energy required for growth to occur, in contrast to other protective agents which affect only the rate of crack propagation.

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