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Anti-tarnish coatings are used to improve solderability, increase corrosion resistance, and stop oxidation from growing on the metal surface. They are extremely effective at stopping oxidation during extended storage, especially when the temperature fluctuates, which may hasten the oxidation process by causing condensation.
Anti-tarnish coatings come in a variety of forms, including chromates, triazoles, lacquers, and clear powder coatings. Variations on these coatings include metallic surface coatings with two or more base metal underlayers and/or two or more precious metal overlayers, as well as base metal alloy underlayers and precious metal alloy overlayers.
Anti-tarnish coatings offer greater corrosion resistance and improved solderability. They are particularly effective at halting oxidation during extended storage, especially when the temperature fluctuates, which may hasten the process because condensation may occur.
Anti-tarnish coatings also have a long lifespan, are resistant to chemicals, and repel water and grime. Additionally, they guard against dirt, abrasion, scratches, tarnishing, corrosion, and discoloration.
This invention relates to techniques and compositions for improving copper substrates used in the production of electronic and microelectronic devices’ corrosion resistance, solderability, and wear resistance.
For instance, during the production of printed circuit boards, copper circuitry may have a tiny layer of silver deposited on it to protect its solderability.
The silver is typically plated via an immersion displacement plating process, in which surface copper atoms come into contact with and reduce silver ions from the plating mixture, as shown by the following reaction: Cu(S) + 2Ag+ (aq) => Cu2+ (aq) + 2Ag(S).
The Global Anti-tarnish coatings market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
A product called Antitarnish-A-100 is used to prevent tarnishing on metal surfaces. Use the readily available ready-for-use solution or dilute it to a ready-for-use solution to use it1.
The product has a storage stability of 24 months and is kept at temperatures below 35°C. The operating temperature for Antitarnish-A-100 is 40°C to 50°C, and the recommended concentration is 10-20ml/L (range: 5-50ml/L).
SPLUC-033 This unique product was created as a nanocoating that provides exceptional performance characteristics in a thin sheet. Transparent clear lacquer is a ceramic-based coating that gives copper materials strong abrasion resistance, mar & slide resistance, and anti-tarnishing properties. It provides adherence to any metal, ferrous or not.
