Corrosion: Environments and Industries
Corrosion in the Microelectronics Industry
This article discusses the influence of the materials, design, package type, and environment on corrosion in microelectronics. It describes the common sources and mechanisms of corrosion in microelectronics, including anodic, cathodic, and electrolytic reactions resulting in uniform corrosion, galvanic corrosion, pitting corrosion, creep corrosion, dendrite growth, fretting, stress-corrosion cracking, and whisker growth. The article presents effective measures for minimizing the moisture retention in hermetic packages and/or moisture ingress in plastic packages. It concludes with information corrosion tests.
This article presents a detailed examination of corrosion at the various production stages of wafer fabrication. The corrosion issues related to batch metal-etch systems and single-wafer metal-etch systems are also discussed. The article provides a case study, which illustrates that the factors outside the normal processing of wafers or tool-specific problems can contribute to metal-line corrosion.
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