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Corrosion Glossary - Q
- Quad: a measure of energy equivalent
to a quadrillion (a million times a million times one thousand, or 1015) British
thermal units (Btu).
- Quality control: all aspects of the
control of the spraying process including the surface preparation, spraying,
control of thickness deposited and the oxide and porosity levels, surface finish
and NDE checks as specified.
- Quenching: rapid cooling. in the heat
treating of metals, the step of cooling metals rapidly in order to obtain desired
properties; most commonly accomplished by immersing the metal in oil or water.