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单词 refractory
释义
refractory

Physics
  • 1. Having a high melting point. Metal oxides, carbides, and silicides tend to be refractory materials, and are extensively used for lining furnaces, etc.

    2. A refractory material.


Astronomy
  • A term describing an element or compound that melts or boils (vaporizes) at a relatively high temperature, or (equivalently) condenses from a gas at a high temperature. Aluminium, calcium, and uranium are examples. A refractory substance is the opposite of a volatile one.


Chemistry
  • 1. Having a high melting point. Metal oxides, carbides, and silicides tend to be refractory, and are extensively used for lining furnaces.

    2. A refractory material.


Chemical Engineering
  • A non-metallic material used to line furnaces, kilns, ovens, and some high-temperature reactors, which can maintain its mechanic strength at high temperature. They are made from chemically inert materials such as fire clay, silicon oxide, and aluminium oxide, and are able to withstand very high temperatures without cracking or expansion. Some refractory materials are also required to be resistant to alkaline and acidic environments.


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