refractoryrɪˈfræk tə ri
refractory (n)
- plural
- refractories
English Definitions:
furnace lining, refractory (adj)
lining consisting of material with a high melting point; used to line the inside walls of a furnace
refractory, stubborn (adj)
not responding to treatment
"a stubborn infection"; "a refractory case of acne"; "stubborn rust stains"
refractory (adj)
temporarily unresponsive or not fully responsive to nervous or sexual stimuli
"the refractory period of a muscle fiber"
fractious, refractory, recalcitrant (adj)
stubbornly resistant to authority or control
"a fractious animal that would not submit to the harness"; "a refractory child"
refractory (Noun)
A material or piece of material, such as a brick, that has a very high melting point.
refractory (Adjective)
Obstinate and unruly; strongly opposed to something.
refractory (Adjective)
Not affected by great heat.
refractory (Adjective)
Difficult to treat.
refractory (Adjective)
Incapable of registering a reaction or stimulus.
Refractory
A refractory material is one that retains its strength at high temperatures. ASTM C71 defines refractories as "non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F". Refractory materials are used in linings for furnaces, kilns, incinerators and reactors. They are also used to make crucibles.
Refractory
In materials science, a refractory material or refractory is a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures. Refractories are polycrystalline, polyphase, inorganic, non-metallic, porous, and heterogeneous. They are typically composed of oxides or carbides, nitrides etc. of the following materials: silicon, aluminium, magnesium, calcium, boron, chromium and zirconium.ASTM C71 defines refractories as "non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F (811 K; 538 °C)".Refractory materials are used in furnaces, kilns, incinerators, and reactors. Refractories are also used to make crucibles and moulds for casting glass and metals and for surfacing flame deflector systems for rocket launch structures. Today, the iron and steel industry and metal casting sectors use approximately 70% of all refractories produced.
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