Author: United States. Ship Structure Committee
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 184

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Author:
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 1126

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Author:
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 1020

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Author: Larry J. Vande Walle
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 216

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Author: J. Peter Ault
Publisher:
ISBN:
Category : Bridges, Iron and steel
Languages : en
Pages : 72

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This report presents the results of a test program designed to investigate, in the laboratory, possible causes for failure of water-based inorganic zinc (WBIOZ) coatings. Failures observed in the field have consisted of either topcoat delamination or the appearance of "freckle rusting" in the cured WBIOZ primer. There are many hypotheses regarding the cause of these failures, but no sufficient explanation exists. Furthermore, there are no proven means to ensure that failures do not occur. The general consensus of the literature is that the failures relate to improper cure of the WBIOZ primer. This improper curing is further hypothesized to relate to environmental conditions. The project initially focused on identifying what relationship, if any, existed between environmental conditions and the observed failure modes. Since a definitive relationship did not exist, further testing was conducted to investigate the effects of substrate salt contamination, improper zinc content in the mixed coating, and the effects of rinsing the primer before topcoating. This report presents the more practical results of the study

Author:
Publisher:
ISBN:
Category : Catalogs, Union
Languages : en
Pages : 1032

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Includes entries for maps and atlases.

Author: Xiaoge Gregory Zhang
Publisher: Springer Science & Business Media
ISBN: 1475798776
Category : Science
Languages : en
Pages : 481

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Humankind's use of zinc stretches back to antiquity, and it was a component in some of the earliest known alloy systems. Even though metallic zinc was not "discovered" in Europe until 1746 (by Marggral), zinc ores were used for making brass in biblical times, and an 87% zinc alloy was found in prehistoric ruins in Transylvania. Also, zinc (the metal) was produced in quantity in India as far back as the thirteenth century, well before it was recognized as being a separate element. The uses of zinc are manifold, ranging from galvanizing to die castings to electronics. It is a preferred anode material in high-energy-density batteries (e.g., Ni/Zn, Ag/Zn, ZnJair), so that its electrochemistry, particularly in alkaline media, has been extensively explored. In the passive state, zinc is photoelectrochemically active, with the passive film displaying n-type characteristics. For the same reason that zinc is considered to be an excellent battery anode, it has found extensive use as a sacrificial anode for the protection of ships and pipelines from corrosion. Indeed, aside from zinc's well-known attributes as an alloying element, its widespread use is principally due to its electrochemical properties, which include a well-placed position in the galvanic series for protecting iron and steel in natural aqueous environments and its reversible dissolution behavior in alkaline solutions.

Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 366

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Author: Maritime Research Information Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 446

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Author: Steel Structures Painting Council
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 600

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