Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- A trademark used for a welding and incendiary mixture of fine aluminum powder with a metallic oxide, usually iron, that when ignited yields an intense heat.
Century Dictionary and Cyclopedia
- n. The trade-name of a mixture of metallic aluminium in a very finely divided condition (so-called ‘aluminium bronze powder'), with the oxid of one or more metals, which on being ignited gives rise to an extremely high temperature as the result of combustion of the aluminium which unites with oxygen abstracted from the oxid used. This oxid was originally oxid of iron and the mixture was applied by its inventor, Goldschmidt, to the melting of holes through plates of iron or steel, and the welding of iron rails and pipes; but other oxids may be substituted, sodium dioxid being particularly effective. (See
alutminothermics .) The thermit is ignited by a primer consisting of a mixture of barium superoxid and aluminium, and the temperature obtained is estimated at over 3,000° C.
Examples
“The process of welding which makes use of the great heat produced by oxygen combining with aluminum is known as the Thermit process and was perfected by Dr. Hans Goldschmidt.”
“Thermit, which is a mixture of aluminum and iron oxide used in brazing and welding.”
“Thermit," was all Kennedy said, as just a trace of a smile of satisfaction flitted over his face.”
“Thermit" shells, which, when they struck and burst, would not only set free a paralysing gas, but would also produce a molten "thermit" mass of”
“Thermit," whispered Constance in reply, as the two watched the glowing mass fascinated, "an invention of a German chemist named”
“Goldschmidt Thermit Company, makes use of a mixture of finely powdered aluminum with an oxide of iron called by the trade name, Thermit.”
“Thermit?" echoed Carton, still as mystified as before.”
“Thermit?" echoed Andrews, shifting the cigar which he had allowed to go out in the excitement.”
“Thermit Reaction aluminium +iron (III) oxide iron + aluminium oxide identify what is being oxidised and what is being reduced?”
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