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Phosphate coatings advantages

The electrodeposition of calcium phosphate coatings was first proposed by Shirkhanzadeh (1991, 1995). Advantages of the ECD include low temperature processing and close control of the coating thickness. As shown in Figure 5.7, the technique uses a three-electrode arrangement immersed in an electrolyte... [Pg.146]

Chromium plating offers numerous advantages however, chromium or other electroplating, enamels, and phosphate coating on metal surfaces do not always provide uniform and reliable protection at high temperatures where thermal expansion may cause spalling. [Pg.324]

The presence of pinholes in phosphate films results in rapid rusting under severe corrosive conditions. Phosphate coatings by themselves are not normally used to provide corrosion protection. Their main advantage is in providing an excellent surface for the bonding of paint films. [Pg.93]

Phosphate coatings provide an underlayer for paint finishes on a wide variety of components. The principal substrate is steel, although zinc and aluminium may also be phosphated. The major advantages of phosphate ccjatjngs arejmpro ... [Pg.438]

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Phosphatic coatings

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