1-20 of 117 Search Results for

tarnish removal

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 January 1994
Fig. 1 Surface preparation required for removal of buffing compounds and tarnish before plating of copper alloys. If the buffing compound is hard and dry, an additional presoak in a solvent emulsion cleaner can be used. Solution No. Type of solution Composition of solution More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003220
EISBN: 978-1-62708-199-3
... including metallic contaminant removal, tarnish removal, oxide and scale removal, finishing, and coating processes. abrasive blast cleaning coating process electropolishing heat-resistant alloys passivation salt bath descaling stainless steel surface treatment tarnish removal Surface...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001307
EISBN: 978-1-62708-170-2
... Abstract This article describes the methods for removing metallic contaminants, tarnish, and scale resulting from hot-working or heat-treating operations on nickel-, cobalt-, and iron-base heat-resistant alloys. It provides a brief description of applicable finishing and coating processes...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001314
EISBN: 978-1-62708-170-2
... surface conditions are pickled in the same solutions using the same procedures. The article discusses three different surface conditions for pickling these nickel alloys: bright annealed white surface requiring removal of tarnish by flash pickling; bright annealed oxidized surface requiring removal...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001311
EISBN: 978-1-62708-170-2
... Abstract This article reviews cleaning and finishing operations that have proven to be effective on titanium, its alloys, and semi-fabricated titanium products. It explains how to remove scale, tarnish films, grease, and other soils and how to achieve required finishes and/or improve wear...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001309
EISBN: 978-1-62708-170-2
... or tarnish) and should only require minimal cleaning prior to further processing. Heat treating of copper and copper alloys in air results in the formation of copper oxides; further cleaning will be necessary to remove these oxides, as discussed below. The need for such cleaning can be prevented by heat...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004172
EISBN: 978-1-62708-184-9
.... It discusses the chip corrosion and oxidation of tin and tin-lead alloys (solders) in SIC. The article also addresses the corrosion of the device terminations resulting in lead (termination) tarnishing that are caused by various factors, including galvanic corrosion, chemical residues, base metal migration...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004173
EISBN: 978-1-62708-184-9
... Abstract This article focuses on the various types of corrosion-related failure mechanisms and their effects on passive electrical components. The types include halide-induced corrosion, organic-acid-induced corrosion, electrochemical metal migration, silver tarnish, fretting, and metal...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004209
EISBN: 978-1-62708-184-9
..., and implant alloys. The effects of composition and microstructure on the corrosion of each alloy group are also discussed. The article concludes with information on the tarnishing and corrosion behavior of these alloys. corrosion dental alloys microstructure metal alloys wrought wire alloys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003221
EISBN: 978-1-62708-199-3
... on copper tubing, forgings, and machined parts; and (c) light annealing scale or tarnish. The HCl solution is primarily used for finishing but is also used to remove scale and tarnish from brass forgings and machined parts, and oxide from copper forgings and machined parts. Conditions for pickling copper...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003211
EISBN: 978-1-62708-199-3
... steels, and cast iron) is almost mandatory. The precoating of steel, brass, and copper, although not entirely essential, is of great value in some applications. Fluxes A flux promotes solder wetting of the base metal by: Removing tarnish films from precleaned surfaces, thereby permitting...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001460
EISBN: 978-1-62708-173-3
... to eliminating the need for postprocess cleaning is to use a “low-solids” flux, that is, a flux with limited solids content. (Solids form the residue after soldering.) However, low-solids fluxes have reduced oxide removal potential. Therefore, substrate tarnishes and contamination, flux density, and process...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001459
EISBN: 978-1-62708-173-3
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001250
EISBN: 978-1-62708-170-2
... coating of electrodeposited tin provides beneficial properties, such as excellent solderability, ductility, softness, and corrosion or tarnish resistance. In this way, the stronger materials that are required for their engineering properties can be enhanced by the desirable properties of tin...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... C52100 880 1620 13 80 HRF 84 HRB 400 58 525 76 (a) H04 temper. (b) Depends on heat treatment. (c) TB00 temper. (d) TD02 temper Applications Copper-base metals are commonly used in plugs, jacks, sockets, connectors, and sliding contacts. Because of tarnish films...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001224
EISBN: 978-1-62708-170-2
... difficult to remove. The hydrocarbon can be distilled from any of any of different petroleum products, such as naphtha, kerosine, benzene, carbon tetrachloride, or other chlorinated solvents, including 1,1,1-trichloroethane. Most of these are no longer used because they are flammable and potentially...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001088
EISBN: 978-1-62708-162-7
... of tarnishing of silver in indoor atmosphere is determined by the supply of sulfur atoms, because the coating is nonprotective. This sulfide decreases the reflectivity of silver and also increases the electrical contact resistance, particularly at low currents, because it is nonohmic in character. The rate...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003773
EISBN: 978-1-62708-177-1
... polishing wheel, followed by flushing of the specimen with water, rinsing in warm ethanol or methanol, and drying in warm air, will often remove this tarnish and reveal the true structure. Discoloration from overetching or oxidation or both can sometimes be removed by lightly swabbing the specimen with a 2...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006139
EISBN: 978-1-62708-175-7
..., and hot air fluidized beds, are used and typically involve two steps: removal of the majority of the water (to a moist cake of 5 to 10% moisture), followed by a more thorough drying (0 to 5% moisture). Dried powders can be used as is or can undergo reduction to remove much of the remaining oxygen...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004140
EISBN: 978-1-62708-184-9
... the long term. For these same reasons, the use of effective sulfide scavengers (zinc oxide pellets, for example) and the retention of low RH levels are preferred to the repeated removal of silver tarnish through chemical strippers or abrasive polishes, because both have an irreversible effect...