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Published: 01 January 2003
Fig. 22 UNS A93003 aluminum coupons after galvanic corrosion test and removal of corrosion products. (a) Coupled to stainless steel cathode with natural microbial biofilm. (b) Coupled to control stainless steel cathode without biofilm. (c) As originally prepared prior to immersion. Source More
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Published: 01 January 2003
Fig. 4 Typical galvanic-corrosion test specimen using a threaded rod for mounting and electrical connection More
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Published: 01 January 2005
Fig. 19 Cross sections of galvanic-corrosion test specimens after (left to right) 1 month, 3 months, 6 months, and 12 months. (a) WC-6Co alloy. (b) WC-3TiC-2TaC binderless alloy. (c) TiC-base cermet. (d) Sintered cobalt-base alloy. (e) WC-NiCrMo alloy. Source: Ref 29 More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003663
EISBN: 978-1-62708-182-5
... Abstract Galvanic corrosion, although listed as one of the forms of corrosion, is considered as a type of corrosion mechanism that is evaluated by modifying the tests used for conventional forms of corrosion. This article focuses on component testing, computer and physical scale modeling...
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Published: 01 January 2003
Fig. 3 Typical galvanic-corrosion immersion test setup using wire connections More
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Published: 01 January 2003
Fig. 7 Specimen configuration for the ISO test for atmospheric galvanic corrosion. 1, anodic plate, 1 piece; 2, cathodic plate, 2 pieces; 3, microsection, 2 pieces; 4, tensile test specimen; 5, bolt, 8 × 40 mm, 2 pieces; 6, washers, 1 mm thick, 16 mm diameter, 4 pieces; 7, insulating washers More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003607
EISBN: 978-1-62708-182-5
... that lead to galvanic corrosion of anodic members. It also explains the three electrochemical techniques of screening tests for predicting galvanic corrosion. The electrochemical techniques comprise of potential measurements, current measurements, and polarization measurements. The article provides...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003838
EISBN: 978-1-62708-183-2
... to galvanic corrosion of various cemented carbides coupled to type 316 stainless steel has been investigated ( Ref 29 ). Immersion testing of uncoupled specimens was also performed for comparison. Compositions of the materials tested are given in Table 11 . Compositions and properties of galvanic corrosion...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
..., and ion-leaching tests are also discussed. corrosion current density corrosion testing electrochemical corrosion testing electrochemical impedance measurement environment-assisted cracking tests fretting corrosion tests galvanic corrosion tests ion-leaching tests medical devices metallic...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... by metal dissolution or oxidation. The more cathodic material is more corrosion resistant (i.e., more noble). Fig. 3 Galvanic series of metals and alloys in seawater. Alloys are listed in order of the potential they exhibit in flowing seawater; those indicated by the black rectangle were tested...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003650
EISBN: 978-1-62708-182-5
... Abstract Simulated service testing includes exposures of either structural components or test specimens in environments that are representative of many general service situations. This article discusses the selection criteria of test specimens and methods of assessing the corrosion effects...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003830
EISBN: 978-1-62708-183-2
... resistance by as much as 20% in a two year industrial exposure test. However, copper-bearing zinc is more likely than unalloyed zinc to develop distinct pits due to corrosion. Small additions of tin (from 0.27 to 0.96%) to a galvanizing bath have been reported to have very little effect on the atmospheric...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... but is expensive and time-consuming. The individual specimens can be weighed before and after testing to determine corrosion rate as a function of potential, thus enabling the errors from using Faraday’s law to be easily corrected. Process of Predicting Galvanic Corrosion from Polarization Behavior...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003808
EISBN: 978-1-62708-183-2
... corrosive to zinc coating than industrial atmospheres. A large-scale long-term test program was conducted on galvanized steel wire (both hot-dipped and electroplated) by ASTM ( Ref 6 ). Carbon steel wires with different coating weights were exposed at several testing sites, which at that time were...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001012
EISBN: 978-1-62708-161-0
... life, experience has shown that the corrosion resistance of galvanized coatings in the field cannot be accurately predicted from accelerated laboratory tests. Environmental factors such as atmospheric contaminants (sulfates, chlorides, and so on) and time of wetness have a large influence...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003689
EISBN: 978-1-62708-182-5
... some type of corrosive material, and the concentration of these materials, as well as the frequency and duration of moisture contact, determines the corrosion rate of galvanized coatings. Figure 2 shows the results of outdoor atmospheric-exposure tests designed to measure the protective life...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
... accelerated, and alloy purity provides no defense. In a salt spray test, galvanic corrosion of magnesium in such an assembly would be excessive compared to that which would occur in a marine atmosphere or even under road salt splash conditions. Corrosion Rates in Salt Spray, Salt-Immersion, and Natural...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003659
EISBN: 978-1-62708-182-5
... preparation can be a major contributor to the cost of the coupon. Galvanic-Corrosion Coupons Pairs of test coupons are coupled electrically to study the effects of galvanic corrosion. The relative areas exposed usually vary from 1:1 to 10:1 or greater. The area ratios should be reversed for complete...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004166
EISBN: 978-1-62708-184-9
..., cosmetic corrosion, crevice corrosion, and galvanic corrosion. aluminum components automotive industry corrosion crevice corrosion galvanic corrosion stress-induced corrosion cosmetic corrosion ALUMINUM COMPONENTS and assembled structures generally show very high resistance to corrosive...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004162
EISBN: 978-1-62708-184-9
... dependent on the nature of the accelerated corrosion test, and correlation with service conditions was poor. Time and experience provided in-service corrosion data that helped lead to the current dominance of electrogalvanized steel (EG or EL), hot dip galvanized steel (GI or HD), and hot dip galvannealed...