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barrier protection

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... mechanisms: barrier protection, chemical inhibition, and galvanic (sacrificial) protection. This chapter begins with a section on organic coating and linings, providing a detailed account of the steps involved in the coating process, namely, design and selection, surface preparation, application, and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... protective coatings, including aluminide diffusion, overlay, and thermal barrier types, and how they perform in different environments based on their ability to tolerate strain. coatings corrosion resistance corrosion testing hot corrosion superalloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030165
EISBN: 978-1-62708-282-2
...-resistant stainless steels. The corrosion resistance of stainless steels is due to the protective nature of the surface oxide film that forms a barrier between the environment and the alloy. The physical and chemical properties of the oxide film and the service environment determine the corrosion resistance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460185
EISBN: 978-1-62708-285-3
... spray has been to deposit MCrAlY coatings (“M” stands for either nickel, cobalt, or a combination of both) on turbine parts. The MCrAlY coating is used as a stand-alone oxidation-protection layer or as a bond coat for the deposition of a ceramic thermal barrier coating. Lack of in-flight oxidation/phase...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910407
EISBN: 978-1-62708-250-1
... steel. Fig. 13 Use of mixed oxide/titanium anode mesh for cathodic protection. (a) Sidewalk and barrier wall installation. (b) Installation of anode mesh on a bridge substructure. Fig. 14 Two views of polymer mesh anodes used to protect reinforcing steel in bridge decks, parking...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030184
EISBN: 978-1-62708-282-2
... conductive ceramics are given in Table 7 . Fig. 18 Use of mixed oxide/titanium anode mesh for cathodic protection. (a) Sidewalk and barrier-wall installation. (b) Installation of anode mesh on a bridge substructure. Courtesy of ELTECH Systems Corporation Table 7 Properties of bulk ceramic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090241
EISBN: 978-1-62708-266-2
... Abstract Aluminum is protected by a barrier oxide film that, if damaged, reforms immediately in most environments. Despite this inherent corrosion resistance, there are conditions where aluminum alloys, like many materials, are subject to the effects of stress-corrosion cracking (SCC). This...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030247
EISBN: 978-1-62708-282-2
... even more fundamental role of magnetite should be acknowledged. This is its role as a protective barrier on the steel surface that limits the reaction of steel with water or the hydrogen ions contained in the water. Therefore, if an excess of a chelating agent such as ethylenediamine tetraacetic acid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870179
EISBN: 978-1-62708-299-0
... ). Organic coatings have been identified as providing excellent corrosion protection for graphite/aluminum MMCs. In service, composites protected with an organic coating must be frequently inspected because this coating provides only barrier protection and any coating holidays are potential sites for...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060369
EISBN: 978-1-62708-261-7
... in corrosion rate is usually observed. Passivity is due to the formation of a surface film or protective barrier that is stable over a considerable range of oxidizing power and is eventually destroyed in strong oxidizing solutions. Under conditions in which the surface film is stable, the anodic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... manufacturing operations Gas-protective films are usually applied directly to the surface of the titanium. They are silicate-base materials that deposit uniform, fusible films through solvent evaporation. These films form glassy barriers at treatment temperatures up to 8l5 °C (1500 °F) and are quite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
..., polyurethanes, vinyl, or chlorinated rubber help to satisfy the need for corrosion prevention. Special primers are used to provide passivation, galvanic protection, corrosion inhibition, or mechanical or electrical barriers to corrosive action. Many tests exist for establishing the reliability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910001
EISBN: 978-1-62708-250-1
... corrodes preferentially and protects the steel. Organic Coatings. The primary function of organic coatings in corrosion protection is to isolate the metal from the corrosive environment. In addition to forming a barrier layer to stifle corrosion, the organic coating can contain corrosion inhibitors...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460209
EISBN: 978-1-62708-285-3
... AM technology. This is because AM technology is expected to drive rapid progress and to bring innovation in the manufacturing process throughout the automotive industry, which can help minor companies overcome the market-entry barrier resulting from the technological and financial gap between OEMs...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240583
EISBN: 978-1-62708-251-8
... as silicides and aluminides that form compact or glassy oxide layers, alloys that form compact oxide layers, noble metals that resist oxidation, and stable oxides that provide a physical barrier to the penetration of oxygen. Although coating systems have been developed for all of the refractory...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030025
EISBN: 978-1-62708-282-2
... with aluminum and manganese has been varied, although aluminum additions and diffusion coatings have shown particular promise in being able to set up a barrier to carbon ingress, thereby increasing resistance to carburization. Studies of alloy ratio of nickel and chromium have shown that alloys based...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
... properties, compositions, and processing characteristics of beryllium and its alloys. It provides information on powder production and consolidation, commercial designations and grades, wrought products, and forming processes. It also discusses the issue of corrosion, the use of protective treatments and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
... surface to perform functions that are distinct from those functions demanded from the bulk of the material” ( Ref 1 ). The desired properties or characteristics of surface-engineered components include: Improved corrosion resistance through barrier or sacrificial protection Improved oxidation and...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030019
EISBN: 978-1-62708-282-2
... occurring at the holidays in the otherwise protective coating. If inert barrier coatings are employed, both the anode and cathode must be protected—for example, the heads, tubesheets, and tubes (for a distance of the first 4 to 6 tube diameters on the tube side) of a water-cooled heat exchanger...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350183
EISBN: 978-1-62708-315-7
... Group Publishing and available at most local public libraries. Corrosion-resistant protective coatings include various organic and inorganic coatings that provide barrier protection (e.g., a paint coating or multilayer electroplate) or sacrificial protection (e.g., zinc and aluminum coatings). As...