Hot-dipped galvanized steels

With hot-dipped galvanized steel, hydrogen absorption with the formation of blisters can be observed in cathodic protection [38]. [Pg.57]

The assessment for nonalloyed ferrous materials (e.g., mild steel, cast iron) can also be applied generally to hot-dipped galvanized steel. Surface films of corrosion products act favorably in limiting corrosion of the zinc. This strongly retards the development of anodic areas. Surface film formation can also be assessed from the sum of rating numbers [3, 14]. [Pg.148]

Fig. 5-4 Cell currents between a coated specimen (5 = 300 cm ) and uncoated steel electrode (5 =1.2 cm ) in NaCl solutions at 25°C. Left shot-peened steel sheet, 150 pva EP-tar. Right hot-dipped galvanized steel sheet, 150 jim EP-tar.

Materials for metal tanks and installations include plain carbon steel, hot-dipped galvanized steel, stainless steel [e.g., steel No. 1.4571 (AISI 316Ti)], copper and its alloys. The corrosion resistance of these materials in water is very variable and can... [Pg.442]

Fitzpatrick et al. [41] used small-spot XPS to determine the failure mechanism of adhesively bonded, phosphated hot-dipped galvanized steel (HDGS) upon exposure to a humid environment. Substrates were prepared by applying a phosphate conversion coating and then a chromate rinse to HDGS. Lap joints were prepared from substrates having dimensions of 110 x 20 x 1.2 mm using a polybutadiene (PBD) adhesive with a bond line thickness of 250 p,m. The Joints were exposed to 95% RH at 35 C for 12 months and then pulled to failure. [Pg.284]

Fig.. 24. Schematic drawing of the visual appearance of the failure surfaces of lap joints prepared from hot-dipped galvanized steel substrates. Reproduced by permission of John Wiley and Sons from Ref. [41].

Fitzpatrick and Watts [57] also applied imaging TOF-SIMS to deteiTnine the failure mechanisms of adhesively bonded, phosphated hot-dipped galvanized steel... [Pg.304]

The most important use is in primers for zinc-coated substrates. The pH change occurring on hydrolysis of the calcium plumbate etches the zinc surface which improves adhesion of primers, especially on hot-dip galvanized steel [5.151],... [Pg.206]

Corrosion within the tower itself is due mainly to the particular conditions existing therein (air, humidity and temperature) and also to the chemical treatment of the water. All construction materials exposed to these conditions must be selected carefully. Hardware and piping for distribution headers have been successfully made with hot-dipped galvanized steel, cadmium-coated steel, stainless steel and silicon bronze. [Pg.186]

Worsley and coworkers utilized an SVET to investigate the corrosion at cut edges of coil-coated steel [143]. Samples were hot-dip galvanized steel, chromate treated and coated on both sides by a 5-pm epoxy-based polymer. A 140-p.m PVC laminate coating was applied to one or both sides of the sheet to produce asymmetrically and symmetrically coated samples. Measurements were done in 0.86 M NaCl solution. Interestingly, the measurements of Kne... [Pg.530]

A large majority of telecommunication towers are of the self-supporting type. These have been constructed since the early 1960s and are made from hot-dipped galvanized steel. For about 40 years, there is hardly any corrosion. [Pg.159]

The most important change in materials over the years has been the transition from uncoated mild steel to zinc pre-coated steel and other corrosion-resistant metals. Hot-dip galvanized steels were used in the early stages in the motor vehicle industry. Hot-dipped galvanized steels were corrosion resistant but had a spangled surface that resulted in poor appearance after painting. Hot-dipped galvanized steel is still used on most body parts and interior surface of body outer panels. [Pg.277]

Hot-dipped galvanized steel bands (using the Sendzimir method)... [Pg.259]

Domestic appliances (e.g., refrigerators, deepfreezers, dishwashers, washing machines, and laundry dryers) are mainly made from blank sheet iron, or electrolytically or hot dip galvanized steel. Coatings must protect these construction materials against corrosion caused by food ingredients, household chemicals, and the humid atmosphere in a kitchen or laundry. [Pg.259]

A.M. Cabral, W. Trabelsi, R. Serra, M.P. Montemor, M.L. Zheludkevich, M.G.S. Ferreira, The corrosion resistance of hot dip galvanized steel and AA2024-T3 pre-treated with bis-[triethoxysilylpropyl] tetrasulfide solutions doped with Ce(N03)3, Corros. Sci. 48 (2006) 3740-3758. [Pg.597]

Chem. Descrip. Linear sat. polyester resin Uses Polyester for coil coatings (primer for hot dip galvanized steel, hot laminating adhesives), can coatings (adhesion promoters, toil primers, printing inks)... [Pg.291]

Uses Polyester tor coil coatiiigs (interior architecture, appliance finishing, primer tor hot dip galvanized steel, primer tor aluminum), can coatings (metai decorating enamels, interior can coatings)... [Pg.291]

Uses Corrosion protective coating for plated and unplated metals base coat for painting of nonferrous metals Features Approved for governmental and industrial spec, finishing of zinc plate, cadmium plate, hot-dipped galvanized steel, zinc die-cast... [Pg.439]

Uses Raw material for exterior architecture coatings, appliance finishing, traffic coatings, primers for hot dip galvanized steel, primers for aluminum, industrial coatings Properties Sol n. 60% solids... [Pg.910]

Dunham K (2002) Preparing hot-dip galvanized steel surfaces for painting or powder coating a primer. Met Finish 100(9) 20. doi 10.1016/S0026-0576(02)807-46-2... [Pg.67]

Screens are usually made of stainless steel or Monel, at least in the finer sizes. Coarse, heavy-duty screens may be made of hot-dipped galvanized steel. [Pg.469]

Table 1.6A Comparalive Characteristics of Paints and Paint Films on Hot Dip Galvanized Steel...

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