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Definitions (116)
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lpps
See 'Vacuum or Low Pressure Plasma Spraying.' M Magnetron sputtering: See Sputtering. In this PVD process, the sputtering action is enhanced by intense magnetic fields.
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chromating
Chromate conversion is a process which completely degreases and removes all traces of the oxide film, replacing it by immersion (a rinse) with chromate coating which can then be painted. It is used as a post-treatment for cadmium, zinc and aluminium coatings
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case-hardening
See Carburising
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wear
Loss of material from a surface by means of relative motion between it and another body. Third bodies i.e. grit X Y Z Zinc Plating: The electro-deposition of zinc or zinc alloys (eg Zn/Ni, Zn/Sn) to provide galvanic corrosion protection.
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thermal spraying
A process in which coating material is heated and accelerated from a spray torch towards the workpiece. The deposited material forms a coating on the surface.
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thermochemically formed coatings
A painted, dipped or sprayed chromium oxide based coating consolidated by repeated deposition and curing cycles (about 500oC).
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thermal barrier coating
A coating produced to present an insulating barrier to a heat source and to protect the substrate.
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surfacing
The application of a coating or cladding to a surface to impart a change in its surface behaviour. T Tensile strength: A measure of the resistance that a material offers to tensile stress. It is defined as the stress, expressed as the force per unit cross sectional area, required to break it.
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substrate
The parent or base material to which the coating is applied.
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stress
The force per unit area on body that tends to cause it to deform. It is a measure of the internal forces in a body between particles of the material of which it consists as they resist separation, compression, or sliding.
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