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electrolytic dissolution

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2024
DOI: 10.31399/asm.tb.pmamfa.t59400009
EISBN: 978-1-62708-479-6
... Abstract This chapter provides a qualitative overview of powder preparation technologies including milling, mechanical alloying, electrolytic dissolution, metal oxide reduction, solid-state reactive synthesis, and gas, water, and centrifugal atomization. It discusses the general implementation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030082
EISBN: 978-1-62708-282-2
..., it is generally accepted that the dissolution of both copper and zinc and the subsequent redeposition of copper does occur during the corrosion of copper-zinc alloys in many electrolytic solutions. However, it should be pointed out that this condition is not necessary for dezincification to occur, although...
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Published: 01 December 2015
Fig. 9 Schematic illustration of the current-potential behavior of elemental metal “A” and “B” dissolution and the corresponding “A p B (1–p) ” alloy dissolution. The critical potential corresponds to that associated with the knee in the curve and is not sharply defined. The shape of the knee More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310019
EISBN: 978-1-62708-286-0
... to to understand rates of corrosion. The discussion covers two kinetic processes, namely electrode reactions at the cathode and anode and conduction of ions in the electrolyte. The chapter also provides information on passivation and its effect on polarization diagrams. corrosion kinetics passivation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030039
EISBN: 978-1-62708-282-2
... to accelerated attack of the metal surface, as shown in Fig. 2 . There are numerous practical cases of geometries that lead to crevice corrosion. In almost any engineered structure there are many instances in which two or more materials are, by design, in close proximity as described previously. If electrolyte...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910497
EISBN: 978-1-62708-250-1
... in both acid and alkaline environments. anaerobic. Free of air or uncombined oxygen. anion. A negatively charged ion that migrates through the electrolyte toward the anode under the influence of a potential gradient. See also cation and ion. anode. The electrode of an electrolyte cell at which oxidation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310011
EISBN: 978-1-62708-286-0
... dissolution and (b) the same cell with a variable resistor and voltmeter (the anode and cathode, respectively), an electrolyte, and an electron pathway. It should be noted that electrodes are interfaces that require several phases to be in contact. Oxidation, Reaction 2, occurs at the anode and reduction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230493
EISBN: 978-1-62708-298-3
... and organic fluids, they cannot be recycled directly. Dissolution and recovery of beryllium must be performed through the resource recovery facility described previously. If the beryllium oxide ceramic is metallized (molybdenum, manganese, nickel, and copper), the metals must be chemically milled before...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030033
EISBN: 978-1-62708-282-2
... dissolution of the underlying metal. If the attack initiates on an open surface, it is called pitting corrosion; at an occluded site, it is called crevice corrosion. These closely related forms of localized corrosion can lead to accelerated failure of structural components by perforation or by acting...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310193
EISBN: 978-1-62708-286-0
... treatments such as Kolene,* a molten mixture of nitrate salt and hydroxide, or electrolytic conversion treatments such as electrolytic sodium sulfate. Both treatments convert the trivalent chromium to hexavalent form, allowing for easy scale dissolution. Their use may, however, lead to environmental problems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... in the electrolyte) and for hydrogen-assisted crack growth resulting from the reduction of hydrogen ions at the crack tip. Thermodynamics of SCC The thermodynamic conditions for anodically assisted SCC are that dissolution or oxidation of the metal and its dissolution in the electrolyte must...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... requirements both for anodically assisted SCC (where crack propagation depends either directly or indirectly on the oxidation of metal atoms from the crack tip and their dissolution in the electrolyte) and for hydrogen-assisted crack growth resulting from the reduction of hydrogen ions at the crack tip...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030380
EISBN: 978-1-62708-282-2
.... The electrode of an electrolyte cell at which oxidation occurs. Electrons ow away from the anode in the external circuit. It is usually at this electrode that corrosion occurs and metal ions enter solution. Contrast with cathode. anode corrosion. The dissolution of a metal acting as an anode. anode corrosion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850165
EISBN: 978-1-62708-260-0
... an “etched” condition suitable for structure examination. Standard chemical etching solutions are most commonly employed, but other methods are also used such as anodizing and electrolytic and potentiostatic etching. Techniques using heat, such as heat tinting or thermal etching, are useful and have wide...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
... of electricity. For the flow of energy to take place, either a moist conductor or an electrolyte must be present. An electrolyte is an electricity-conducting solution containing ions, which are atomic particles or radicals bearing an electrical charge. Charged ions are present in solutions of acids, alkalis...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310027
EISBN: 978-1-62708-286-0
..., as with some acid media, so that passivating species cannot form or by being too oxidizing so that the oxidized species that normally affect passivity are no longer stable. The former is called dissolution in the active state, while the latter is termed transpassive dissolution . Intelligent design...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030005
EISBN: 978-1-62708-282-2
... particles (electrons and ions) at the interface of the metal (an electronic conductor) and the electrolyte (an ionic conductor). The transfer of electrons (flow of electric current) occurs because of the formation of a galvanic corrosion cell on the metal surface. Three elements are necessary for the cell...
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
... cathodic region. Anodic dissolution occurs at the stagnant area. Once attack is underway, the area in the crevice or under a deposit becomes increasingly more aggressive because of pH depression and an increase in electrolyte concentration. Crevice corrosion can occur at a joint between any two...