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Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid. This superalloy has excellent resistance to general corrosion, pitting, and crevice
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Industry News | 2014-05-12 16:06:39.0
SMTA China announces that it presented awards for nine papers at the SMTA China East 2014 Conference Award Presentation Ceremony, held on Wednesday, April 23, 2014 at Shanghai World Expo Exhibition & Convention Center in conjunction with the SMTA China Annual Award Ceremony.
Industry News | 2014-09-18 17:55:32.0
SMTA China announcing that it presented awards for nine papers at the SMTA China South 2014 Conference Award Presentation Ceremony, held on Tuesday, August 26, 2014 at Shenzhen Convention & Exhibition Center in conjunction with the SMTA China Annual Award Ceremony.
Technical Library | 2022-03-16 19:48:18.0
Dendrites, Electrochemical Migration (ECM) and parasitic leakage, are usually caused by process related contamination. For example, excess flux, poor handling, extraneous solder, fibers, to name a few. One does not normally relate these fails with environmental causes. However, creep corrosion is a mechanism by which electronic products fail in application, primarily related to sulfur pollution present in the air.1 The sulfur reacts with exposed silver, and to a lesser extent, exposed copper. This paper will explore various aspects of the creep corrosion chemical reaction
Technical Library | 2015-07-16 17:24:23.0
Qualification of electronic hardware from a corrosion resistance standpoint has traditionally relied on stressing the hardware in a variety of environments. Before the development of tests based on mixed flowing gas (MFG), hardware was typically exposed to temperature-humidity cycling. In the pre-1980s era, component feature sizes were relatively large. Corrosion, while it did occur, did not in general degrade reliability. There were rare instances of the data center environments releasing corrosive gases and corroding hardware. One that got a lot of publicity was the corrosion by sulfur-bearing gases given off by data center carpeting. More often, corrosion was due to corrosive flux residues left on as-manufactured printed circuit boards (PCBs) that led to ion migration induced electrical shorting. Ion migration induced failures also occurred inside the PCBs due to poor laminate quality and moisture trapped in the laminate layers.
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Corrosion Testing For Electronic Equipment
SMTnet Express, July 16, 2015, Subscribers: 23,036, Members: Companies: 14,463, Users: 38,550 Testing Printed Circuit Boards for Creep Corrosion in Flowers of Sulfur Chamber iNEMI (International Electronics Manufacturing Initiative) Qualification
SMTnet Express, March 17, 2022, Subscribers: 25,805, Companies: 11,547, Users: 27,113 Creep Corrosion On Lead-Free Printed Circuit Boards In High Sulfur Environments The material and process changes required to eliminate lead from
Surface Mount Technology Association (SMTA) | https://www.smta.org/smtai/best_papers.cfm
Optical Highspeed Imaging" 2007: Randy Schueller, Dell "Creep Corrosion on Lead-Free Printed Circuit Boards in High Sulfur Environments" 2006
