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tarnish removal

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
... for superalloys and how they work. It discusses the effect of metallic contaminants, tarnish, oxide, and scale and how they can be detected and removed. It also discusses chemical and mechanical surface finishing techniques and where they are used, and presents several application examples. finishing...
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
... Abstract Cleaning procedures serve to remove scale, tarnish films, and other contaminants that form or are otherwise deposited on the surface of titanium during processing operations such as hot working and heat treatment. This chapter explains what makes titanium susceptible to the formation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... concentration an oxide film, or tarnish, formed ( Fig. 7.2 ). Later work by Pugh and Green ( Ref 7.17 ) demonstrated that cracking could be produced in copper-free ammonia solutions by anodically polarizing the brass specimen. Thus, the primary role of the cupric complex ion appears to be as an oxidant...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940451
EISBN: 978-1-62708-302-7
... Petroleum Products by the Copper Strip Tarnish Test • D 610, Test Method for Evaluating Degree of Rusting on Painted Steel Surfaces • D 665, Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water • D 849, Test Method for Copper Corrosion of Industrial...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290165
EISBN: 978-1-62708-306-5
... the melting temperature of the filler metal. Even though fluxes are available that can remove most oxides and organic films, careful cleaning of the surfaces to be brazed or soldered is critical to making sound joints. In addition, fluxes leave residues that are often corrosive and can be difficult...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7
... such as discontinuous oxide coatings, deposits of more noble metals (e.g., copper on iron), and deposits of conducting materials, such as graphite, resulting from fabrication processes Irregular deposits such as dirt, scale, and biological growths Areas from which protective coatings have been removed physically...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270025
EISBN: 978-1-62708-301-0
... surfaces should be carefully handled and preserved. Oil and grease on the fracture surface can be removed with organic solvents. The corrosion and oxidation products often hide the true fracture surface beneath. Fine fissures on the surface of these corrosion products may sometimes mislead because they do...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350231
EISBN: 978-1-62708-315-7
... of an abrasive directed at high velocity against the workpiece. abrasive erosion. Erosive wear caused by the relative motion of solid par- ticles that are entrained in a fluid, moving nearly parallel to a solid sur- face. See also erosion. abrasive wear. The removal of material from a surface when hard parti...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... to consolidation. After canning, the can is degassed under vacuum at 595 to 705 °C (1100 to 1300 °F) to remove all air and gases absorbed on the particle surfaces. The can is then sealed and put through the HIP consolidation cycle at 103 MPa (15 ksi) and 760 to 1100 °C (1400–2010 °F). Although HIP is generally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
... corrosion. In some metals, such as steel, uniform corrosion produces a somewhat rough surface by removing a substantial amount of metal, which either dissolves in the environment or reacts with it to produce a loosely adherent, porous coating of corrosion products. In such reactions as in the tarnishing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230189
EISBN: 978-1-62708-351-5
...-forming process, the core is dissolved out, prior to brazing, thereby reducing the weight of the item [ Raw 2002 ]. The links are formed into chain by machines and removed as cut lengths. The brazing operation is by a powder method, which involves tumbling the chain in a nongold, silver-base braze powder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... in service. Appearance In high-visibility areas (e.g., water tanks, railroad cars, and appliances), color, gloss, and a pleasing appearance may be very important. Safety Because some coatings contain toxic pigments and solvents, future removal and disposal problems should be considered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
...-intensity on crack propagation rates, and describes several mechanical fracture models, including corrosion tunnel, film-induced cleavage, and tarnish rupture models. crack initiation crack propagation stress-corrosion cracking STRESS-CORROSION CRACKING (SCC) is a term used to describe service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
... a bright, silvery color. Even after 40 years of exposure in a normal atmosphere, the metal did not tarnish. An oxide surface film protected the metal from further attack, because the volume of beryllium oxide is greater than that of the metal from which it is formed [ Everest 1973 ]. Sulfuric acid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... − solutions Zirconium alloys Aqueous Cl − solutions; organic liquids; I 2 at 350 °C (660 °F) In general, SCC is observed in alloy-environment combinations that result in the formation of a film on the metal surface. These films may be passivating layers, tarnish films, or dealloyed layers...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740325
EISBN: 978-1-62708-308-9
... processes used for removing soils and contaminants are varied, and their effectiveness depends on the requirements of the specific application. Because of the variety of available cleaning materials and the process step possibilities, the selection of a cleaning procedure greatly depends on the degree...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.9781627082679
EISBN: 978-1-62708-267-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910497
EISBN: 978-1-62708-250-1
.... The development of loose removable powder at the surface of an organic coating usually caused by weathering. checking. The development of slight breaks in a coating that do not penetrate to the underlying surface. concentration cell. An electrochemical cell, the electromotive force of which is caused...