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passive electrical components

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030165
EISBN: 978-1-62708-282-2
... protection is achieved by moving the potential of the component to be protected in the positive direction. The passive film that forms acts as a barrier between the environment and the more active metal. However, the higher-potential metal in a galvanic couple is not always rendered less corrodible...
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
... corrosion are forms of localized corrosion that are significant causes of component failure in metal parts. Both forms of corrosion can occur on passivated metals or otherwise protected materials. Fig. 15.7 Forms of corrosion Fig. 15.8 Breaks in mill scale (Fe 3 O 4 ) leading to galvanic...
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
... nonmetal in the same electrolyte. The three essential components are: Materials possessing different surface potential A common electrolyte A common electrical path When dissimilar metals or alloys in a common electrolyte are electrically isolated from each other, they do not experience...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030180
EISBN: 978-1-62708-282-2
... to maintain passivity is usually 10 μA/m 2 (1 μA/ft 2 ) or less. This interesting anodic polarization behavior results from the formation of a surface layer on the metal that is both electrically resistive and relatively insoluble in the chemical environment. The metal is termed passive when this layer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910407
EISBN: 978-1-62708-250-1
... industries, the protection of water boxes and condenser tubesheets in the electric power industry, and the protection of steel reinforcing bars in concrete in highway bridges and parking garages. Steel in contact with concrete is typically in a passive condition due to the buildup of a protective film...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910497
EISBN: 978-1-62708-250-1
.... anodic protection. (1) A technique to reduce the corrosion rate of a metal by polarizing it into its passive region, where dissolution rates are low. (2) Imposing an external electrical potential to protect a metal from corrosive attack. (Applicable only to metals that show ac- tive-passive behavior...
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 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110587
EISBN: 978-1-62708-247-1
... Abstract Passive components can be broadly divided into capacitors, resistors, and inductors. Failure analysis of these components helps determine the root cause and improve the overall quality and reliability of the electronic systems. This article describes different failure analysis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110513
EISBN: 978-1-62708-247-1
... are one of the most challenging environments for electronic devices as few applications include as many simultaneous stress superimpositions. Implementation of AEC-Q100/101 (for active components) and AEC-Q200 (for passive components) is challenging because, even if all the single tests pass, three main...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
... in aqueous corrosion. Nitrate and chromate ions are comparatively innocuous unless present in amounts sufficient to substantially increase the conductivity of the water [ Darwin and Buddery 1960b ]. Cupric and ferric ions can exert a strongly corrosive effect. The normally passive beryllium oxide film...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
... or region on a metallic surface with a negative charge, (c) a second area with a positive charge, and (d) an electrically conductive path between (b) and (c). These components are arranged to form a closed electrical circuit. In the simplest case, the anode would be one metal, such as iron, the cathode...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240323
EISBN: 978-1-62708-251-8
..., a complete electrical circuit is required. In a corroding system ( Fig. 18.1 ), this circuit is made up of four components: The anode is the electrode of an electrolytic cell at which oxidation is the principal reaction. Electrons flow away from the anode in the external circuit. It is the electrode...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110603
EISBN: 978-1-62708-247-1
... or no bond wires, and damaged terminations (e.g., broken leads, balls, or chip-out in the terminations of passive parts). Reclaimed parts are parts that have been recovered from assembled printed circuit boards of discarded electronic assemblies and failed boards which are scrapped by contract...
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
.... anodic protection. Imposing an external electrical potential to polarize a metal into the passive region where dissolution rates are low (applicable only to metals that show active- passive behavior). Contrast with cathodic protection. anodic reaction. Electrode reaction equivalent to a transfer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
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 July 2000
DOI: 10.31399/asm.tb.fec.t65940001
EISBN: 978-1-62708-302-7
... electrochemical corrosion circuit, using it to explain how electric potential differences drive the corrosion process and how corrosion rates vary in proportion to current density. The chapter concludes with a discussion on the importance of corrosion products, such as oxides and hydroxides, and how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
... surface to another part of the same surface. For a current to flow, a complete electrical circuit is required. In a corroding system ( Fig. 1 ), this circuit is made up of four components: The anode is the electrode of an electrolytic cell at which oxidation is the principal reaction. Electrons flow...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940183
EISBN: 978-1-62708-302-7
... and involves formation of a defect oxide (one containing vacant lattice sites) at the outer surface of the Fe 2 O 3 layer as shown in Fig. 5.5(b) . Although the passive layer is electrically conducting, it has not been established whether the low passive current density, i p , is due to the low conductivity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
... is particularly advantageous in machines and the transportation of people and goods. The use of aluminum alloys in automotive applications such as engine blocks, door panels, and stuctural components has steadily increased over the past decade. Aluminum typically displays excellent electrical and thermal...