Corrosion Studies on Gold-Plated Electrical Contacts

Meyyappan, Karumbu; Murtagian, Gregorio; Kurella, Anil; Pathangey, B.; McAllister, Alan; Parupalli, Satish

doi:10.1109/tdmr.2014.2333758

Cited by 10 publications

(8 citation statements)

References 14 publications

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“…Significant differences between minimum and maximum thickness were noticed for each sample. According to Meyyappan et al [12], typical gold coating thickness on connectors ranges from 400 to 800 nm, while the coating of sample 2 exhibited an average thickness of 910 nm. The highest coating thickness was 1420 nm, while in some areas it was only 170 nm.…”

Section: Structure and Thicknessmentioning

confidence: 98%

Evaluation of materials used for coatings of electrical connectors used in the electrical harness of passengers cars

Adamczyk¹,

Zięty²,

Grygier³

2022

Combustion Engines

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Automotive electrical connectors are the essential components of a wiring harness. They are typically made of copper, which has excellent electrical conductivity. Due to the limited corrosion resistance of pure copper, connectors are often coated with other metals. In this paper, the qualities of coatings made of gold and tin are investigated and compared. The samples were examined by a metallographic microscope and scanning electron microscope (SEM). The examination revealed uneven thickness, delamination of the coatings, and issues with the preparation of the core material for coating. Numerous burrs and irregularities were observed. Selected samples were examined in salt solution to test their corrosion resistance. Even though gold is a noble metal and its electrochemical potential is higher, the tin coating was more resistant to corrosion.

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Section: Structure and Thicknessmentioning

confidence: 98%

Evaluation of materials used for coatings of electrical connectors used in the electrical harness of passengers cars

Adamczyk¹,

Zięty²,

Grygier³

2022

Combustion Engines

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“…Therefore, reducing the consumption of Au is a vital issue from both the economic and the ecological point of view [23]. Many studies were dedicated to improve the wear resistance of Au that reduces its consumption or develop cheaper and more reliable plating materials [23,24].…”

Section: Figure 2 Contacts Of a Typical Contact Smart Card And A Brimentioning

confidence: 99%

“…Therefore, films on top of electronic contacts are porous because they are usually thinner than 0.8 µm [27]. These pores induce the corrosion of the sublayer [24]. As a result, the thickness of noble metal coatings is their most important characteristic: it should be thick enough to offer a good corrosion and wear resistance, and be as thin as possible due to its cost [23].…”

Section: Figure 2 Contacts Of a Typical Contact Smart Card And A Brimentioning

confidence: 99%

“…Therefore, localized corrosion with pitting, as depicted in Figure 4, is the main form of corrosion in Au/Ni/Cu systems. Moreover, the oxidation of Ni increases the electrical resistance of the contact that can terminate the lifetime of electrical contacts [24]. [11].…”

Section: Figure 2 Contacts Of a Typical Contact Smart Card And A Brimentioning

confidence: 99%

“…Figure 2 shows a typical standard contact, with a description of the purpose of its different parts 1 . A thin layer of a noble metal is typically used to secure a stable contact resistance during the lifetime of the device [8,24,25]. [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cu/Ni/Au multilayers by electrochemistry: A crucial system in electronics - A critical review

Bahramian¹,

Eyraud²,

Vacandio³

et al. 2019

Microelectronic Engineering

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Field Risk Evaluation of Liquid Metal Interconnects in Microelectronics Applications

Meyyappan,

Murtagian,

Tadayon

et al. 2023

Adv Eng Mater

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Gallium is one of the most desirable, yet less known, interconnects considered in the semiconductor industry. Good electrical conductivity and high stretchability of the liquid metal makes it very attractive for many applications. It allows components to be assembled or disaggregated like Lego blocks without any external forces or energy. The focus of this paper is to shed light on intrinsic reliability degradation mechanisms for components that use liquid metal interconnects. As a starting reference to field reliability risk evaluations, the authors focus on common/controlled use conditions. Environments studied include standard test evaluation procedures like thermal aging (sustained exposure to high temperature over time), thermal cycling, current carrying capability and finally functional product life cycle testing. Studies reveal that the interconnect has very distinct failure mechanisms and unique advantageous/disadvantageous over existing interconnects. Fundamental knowledge gained in this study is expected to help 1) drive future architectures, 2) material/design changes to address any limitations and 3) lastly new qualification methods/standards that account for the unique failure mechanisms.This article is protected by copyright. All rights reserved.

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Corrosion Studies on Gold-Plated Electrical Contacts

Cited by 10 publications

References 14 publications

Evaluation of materials used for coatings of electrical connectors used in the electrical harness of passengers cars

Evaluation of materials used for coatings of electrical connectors used in the electrical harness of passengers cars

Cu/Ni/Au multilayers by electrochemistry: A crucial system in electronics - A critical review

Field Risk Evaluation of Liquid Metal Interconnects in Microelectronics Applications

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