Coating aluminum coatings

The applications of aluminum-coated steels are dictated by the nature of their coatings aluminum coatings for corrosion resistance and iron-aluminum coatiugs (i.e., diffusion coatings) for oxidation resistance. 

While with-in the mobile x-ray system, the waste in the sampler, is contained within a replaceable (and disposable) polyvinyl chloride (PVC) sleeve with a wall thickness of approximately 0.2-inches and a sealed bottom. It was anticipated that the PVC tube or sleeve would, with use, become highly contaminated with waste residues which drip of fall-off the sampler. The sleeve is coated with a conductive coating to prevent static electricity buildup . There are no sources of ignition in this sealed spare. The sampler (and waste) is coupling which includes a positive pressure gasket. This barrier is further isolated by a second barrier consisting of an epoxy coated aluminum sleeve also sealed-off from the main x-ray cabinet and PVC sleeve. There are also no potential sources of ignition in this isolated secondary space as well. 

Nickel-Coated Aluminum, Product Data Sheet, Novamet Specialty Products Corp., Wyckoff, N.J., 1988. 

Electroless nickel or nickel—lead alloys can improve the solderabiUty and braisabiUty of aluminum even when a continuous film is not present. Electroless nickel systems based on dimethylaminehorane reduciag agents are used to coat aluminum contacts and semiconductors (qv) ia the electronics iadustry. Newer uses iaclude corrosion-resistant electroless nickel topcoatings on electroless copper plating for radio frequency... 

Oxide s Ground coats Cover coats Aluminum enamels ... 

Aluminum coatings on steel will perform in a manner similar to zinc coatings. Aluminum has good resistance to many atmospheres in addition, being anodic to steel, it will galvanically protect exposed areas. Aluminum-coated steel products are quite serviceable under high-temperature conditions, for which gooa oxidation resistance is required. 

Aluminum and aluminum-clad steels am highly resistant to naphthenic acids under most conditions. Aluminum-coated steels give good service until coatings fail at coating imperfections, cracks, welds, or other voids. In general, the use of aluminum and aluminized... 

An interesting observation in this work was that a fragment with mfz = 247 was observed for DBA adsorbed onto aluminum coated with y-GPS. This demonstrated the interaction of DBA dimer rather than DBA with y-GPS as shown in Scheme 1. 

Galvanized wire guy strand shall conform to ASTM A-475 Zinc-Coated Steel Wire Strand. Aluminized wire guy strand shall conform to ASTM A-474 Aluminum Coated Steel Wire Strand. Galvanized structural strand shall conform to ASTM A-586 Zinc-Coated Steel Structural Strand. Galvanized structural rope shall conform to ASTM A-603 Zinc-Coated Steel Structural Wire Rope. ... 

Fruit and vegetable juices packed with 21-26 in. of vacuum and stored in uncoated aluminum cans caused severe corrosion as shown in Table III. The corrosion rate brought about by the juices depends more on the nature of the organic acid present and the buffering capacity of the juice than on the total titratable acidity (11). The use of coated aluminum containers considerably minimized corrosion problems. Product control under extended storage conditions may be achieved by using specific chemical additives. However, more work is needed in this area before final conclusions can be reached. 

Table VII. Aluminum Pickup by a Tea Beverage Stored in Single-Coated Aluminum Cans with Easy-Open End°...

Frozen Foods. Corrosion caused by the reaction of foods with aluminum containers is unusual if the products are handled and stored at 0°F or lower. However, the inevitable bad handling of frozen foods during commercial distribution causes undesirable thawing. In this condition, not only does the food deteriorate, but it can also attack the container. Such unwanted reactions can be effectively controlled by using coated aluminum containers. Since aluminum is highly compatible with frozen fruits and citrus juices, it has been used extensively as a liner for fiberboard composite cans, as complete aluminum cans, or as ends in combination with steel can bodies in the frozen food industry. 

Pierson, H. O., Aluminum Coatings by the Decomposition of Alkyls, Thin Solid Films, 45 257-264 (1977)... 

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