VAPOR PLATING. Deposition of a metal or compound on a heated surface by reduction or decomposition of a volatile compound at a temperature below the melting points of the deposit and the base material. The reduction is usually accomplished by a gaseous reducing agent such as hydrogen. The decomposition process may involve thermal dissociation or reaction with the base material. Occasionally used to designate deposition on cold surfaces by vacuum evaporation.
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THERMAL SHOCK. The development of a steep temperature gradient and accompanying high stresses within a structure.
SPRING TEMPER. A temper of nonferrous alloys and some ferrous alloys characterized by tensile strength and hardness about two-thirds of the way from […]
VACUUM FURNACE. A furnace using low atmospheric pressures instead of a protective gas atmosphere like most heat-treating furnaces. Vacuum furnaces are categorized at […]
ULTIMATE STRENGTH. The maximum conventional stress (tensile, compressive or shear) that a material can withstand.