Fig. 5.3 Optical micrographs with etched aluminum coatings as a function of gas temperature at (a) 204 °C (400 °F) and (b) 315 °C (600 °F), revealing the extent of particle deformation. (c) Micrographs used to determine the nature of bonding of the coating. Source: Ref 5.12 More

Fig. 11.6 (Part 1) Examples of aluminum cold-sprayed coatings to repair mechanically damaged parts on an Army helicopter mast support. (a) Snap ring groove and (b) splines filled with cold-sprayed aluminum to restore original dimensions. Source: Ref 11.5 , 11.6 . (c) Naval helicopter More

Fig. 11.6 (Part 2) Examples of aluminum cold-sprayed coatings to repair mechanically damaged parts on an Army helicopter mast support. (a) Snap ring groove and (b) splines filled with cold-sprayed aluminum to restore original dimensions. Source: Ref 11.5 , 11.6 . (c) Naval helicopter More

Fig. 2.50 Examples of filiform corrosion of aluminum. (a) Aluminum foil coated with polyvinyl chloride showing the advancing head and cracked tail section of a filiform cell. Scanning electron microscopy. Original magnification: 80×. (b) Filiform corrosion of a painted aluminum aircraft skin More

Fig. 1 Number of corrosion pits in anodized aluminum 1100 as a function of coating thickness. Source: Ref 4 More

Fig. 2 Weathering data for anodically coated aluminum in an industrial atmosphere More

Figure 19 SEM image of an aluminum line with 10 nm of Au/Pd sputter coating. All the small dark jagged lines are sputter grain artifacts. More

Figure 28 Secondary electron image of aluminum metal sputter coated with 10 nm of Au/Pt. The image has high resolution, but the original surface detail is obscured and the sputter coating grains introduce artifacts seen as jagged dark lines. More

Fig. 7.4 CoNiCrAlY coating after diffusion heat treatment. Aluminum-rich β phase is seen as the dark phase in the matrix (white arrows). Source: Ref 7.9 More

Fig. 8.5 Bonding state of aluminum tube and fin coated by cold spray after the brazing process. Source: Ref 8.20 More

Fig. 8.12 Sequence of wear-resistant coating on aluminum alloy engine block. Reproduced by permission of Oerlikon Metco. Source: Ref 8.49 More

Fig. 9.2 (a) Damaged pad. (b) Pads coated with commercially pure aluminum. Courtesy of the Army Research Laboratory More

Fig. 13.34 (a) Cross section of a sheet coated by Galvalume. The aluminum-rich dendrites are darker. The interdendritic regions rich in zinc are lighter in SE mode in the SEM. (b) Transverse cross section of a steel sheet coated with Galvalume, partially corroded. The zinc-rich regions have More

Fig. 22 Filiform corrosion of PVC-coated aluminum foil. (a) Advancing head and cracked tail section of a filiform cell. Scanning electron microscopy (SEM), 80×. (b) The gelatinous corrosion products of aluminum oozing out of the porous end tail section of a filiform cell. SEM. 830×. (c) Tail More

Fig. 9 Filiform corrosion on PVC-coated aluminum foil. (a) Advancing head and cracked tail section of a filiform cell. SEM. 80×. (b) The gelatinous corrosion products of aluminum oozing out of the porous end tail section of a filiform cell. SEM. 830×. (c) Tail region of a filiform cell. Tail More

Fig. 15 Scratches in a nitrocellulose coating on aluminum induced by light abrasion. Hills and valleys in the foil are induced by a diamond-imprint gravure roll that applies the nitrocellulose as a lacquer. SEM. 200× More

Fig. 16 Filiform attack in a nitrocellulose-coated aluminum foil laminated to paperboard showing a tendency to follow both the gravure imprint and the rolling direction of the sheet. Light microscopy. 75× More

Fig. 12 Coated discontinuous silicon carbide (particulate)/aluminum MMCs after seawater exposure. (a) Coated with ion vapor deposited aluminum; 4 month exposure. (b) Coated with plasma-sprayed aluminum oxide; 18 month exposure. (c) Coated with arc-sprayed zinc; 9 month exposure More

Fig. 10 Number of corrosion pits in anodized aluminum 1100 as a function of coating thickness. Source: Ref 5 More

Fig. 11 Weathering data for anodically coated aluminum in an industrial atmosphere More