Search Results for sprayed coatings

Fig. 15 Typical microstructures of electric-arc-sprayed coatings. (a) Aluminum. (b) Zinc. (c) NiAl. (a) and (b) courtesy of Praxair TAFA (formerly Miller Thermal). (c) courtesy of Praxair TAFA (formerly Hobart TAFA) More

Fig. 6 Summary of important field exposure tests of thermal-sprayed coatings in the world. BISRA, British Iron and Steel Research Association; BS, British Standard; AWS, American Welding Society; ISO, International Organization for Standardization; SPCC: The Society for Protective Coatings More

Fig. 2 Thermal spray coating. Buildup of a thermal spray coating is a chaotic process. Molten particles spread out and deform (splat) as they strike the substrate, at first keying onto asperities on the substrate surface, then interlocking to one another. Voids can occur if the growing deposit More

Fig. 9 Typical imperfections in flame/arc spray coatings. (a) Thin area in coating. (b) Imbedded blasting grit. (c) Void extending to substrate More

Fig. 26 Spalling of a plasma sprayed coating as a result of poor surface preparation prior to the application of the coating More

Fig. 8 Scribed, sealed and painted thermal spray coatings on steel substrates compared to a scribed, painted steel panel after 42 months of severe marine atmospheric exposure. See the article “Corrosion of Metallic Coatings” in this Volume. More

Fig. 3 Current and potential thermal spray coating applications for aircraft turbine engine parts. Source: Ref 4 More

Fig. 1 Thermal spray coating microstructure showing common features More

Fig. 6 Typical thermal spray coating defects More

Fig. 4 Design of substrate geometry for thermal spray coating processes More

Fig. 9 Comparison of thermal spray coatings deposited on macroroughened and smooth surfaces. (a) Sprayed metal over grooves; shrinkage constrained by grooves. (b) Sprayed metal on smooth surface; effect of shear stress on bond due to shrinkage. Adapted from Ref 3 More

Fig. 2 Design of substrate geometry for thermal spray coating processes More

Fig. 8 Comparison of thermal spray coatings deposited on macroroughened and smooth surfaces. (a) Sprayed metal over grooves; shrinkage constrained by grooves. (b) Sprayed metal on smooth surface; effect of shear stress on bond due to shrinkage. Adapted from Ref 2 More

Fig. 10 Sealant penetration into thermal spray coating More

Fig. 8 Fracture surface of a plasma spray coating. Original magnification: 3000× More

Fig. 9 Schematic showing the buildup of a plasma spray coating. Molten particles spread out and splatter as they strike the target, initially locking onto the irregularities of the roughened surface and then interlocking with one another. Voids result as the growing deposit traps air. In some More

Fig. 12 Scanning electron micrograph of fractured surface of plasma spray coating showing columnar grains More

Fig. 3 Three views of a bridge that was thermal spray coated with a Zn-15Al alloy. Courtesy of ASB Industries Inc. More

Fig. 4 Estimated service life of Zn-15Al thermal spray coating in selected environments for a given coating thickness. Sealed coatings are recommended for saltwater immersion service. Adapted from Ref 14 More

Fig. 5 Estimated service life of aluminum thermal spray coating in selected environments for a given coating thickness. For wear, abrasion, and impact applications, Al-10%Al 2 O 3 is preferred. Adapted from Ref 14 More