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Titolo:
Design of accelerated corrosion tests for electronic components in automotive applications
Autore:
Eriksson, P; Carlsson, B; Wallinder, IO;
Indirizzi:
Swedish Natl Testing & Res Inst, SE-50115 Boras, Sweden Swedish Natl Testing & Res Inst Boras Sweden SE-50115 0115 Boras, Sweden Royal Inst Technol, Div Corros Sci, SE-10044 Stockholm, Sweden Royal Inst Technol Stockholm Sweden SE-10044 SE-10044 Stockholm, Sweden
Titolo Testata:
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
fascicolo: 1, volume: 24, anno: 2001,
pagine: 99 - 107
SICI:
1521-3331(200103)24:1<99:DOACTF>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
COPPER;
Keywords:
accelerated corrosion test; atmospheric corrosion; automotive electronic components; corrosivity; environmental characterization; NO2; service life prediction; SO2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Eriksson, P Swedish Natl Testing & Res Inst, SE-50115 Boras, Sweden Swedish Natl Testing & Res Inst Boras Sweden SE-50115 Sweden
Citazione:
P. Eriksson et al., "Design of accelerated corrosion tests for electronic components in automotive applications", IEEE T COMP, 24(1), 2001, pp. 99-107

Abstract

Two new accelerated laboratory corrosion tests for electronic components in automotive applications have been developed, based on the use of metalliccopper as a meter for corrosivity. The accelerated tests are designed so that they reproduce the same kind of corrosion effects as observed with exposure of copper in real vehicle environments. The test cycle that best simulates the corrosion characteristics of an engine compartment is composed of the following steps:a) exposure to neutral salt spray for 2 h;b) drying at 23 degreesC and 50% RH for 22 h;c) exposure to a test atmosphere of 1.5 ppm NO2 and 0.5 ppm SO2 at 25 degreesC and 95% RH for five days;d) drying at 23 degreesC and 50% RH for one day. The predominating corrosion products of copper, formed both during serviceexposure and in the accelerated test, are Cu2O and Cu2Cl(OH)(3), with a small amount of sulphur-containing corrosion products in the form of sulphates, In terms of corrosivity of copper, a test duration of six weeks corresponds to 7.5 years of exposure in the reference engine compartment selected for this study. The test cycle designed for the passenger compartment contains the steps: a) exposure for five days to a test atmosphere of 10 ppm NO2 and 95% RH at 35 degreesC, followed by b) drying at 23 degreesC and 50% RH for two days. In this case, Cu2O is the predominating corrosion product. Zn terms of corrosivity of copper, a test duration of four weeks corresponds to 7.5 years of exposure in the reference passenger compartment of this study.

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Documento generato il 02/07/20 alle ore 19:00:35