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NASF Releases PFAS Sampling and Analysis Plan
New Sampling and Analysis Plan (SAP) includes the best practices for collecting and analyzing PFAS samples from surface finishing operations.
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AES Research Project #41: Plating on Anodized Aluminum; Part 3: Pore Structure and Bonding
The effect of anodizing voltage on the adhesion of nickel electrodeposited on anodized aluminum is related to the morphology of the anodic film. In general, adhesion is a linear function of the applied anodizing voltage. New data on the initial stages of pore formation during anodizing indicate that: (1) that the growth mechanism during the initial stage (< 10 sec) differs from that during subsequent growth, (2) there is no metallic bonding and (3) electrodeposited nickel coatings typically fill the entire pore.
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AES Research Project #41: Part 4: Adhesion Failure of Electrodeposited Coatings on Anodized Aluminum Alloys
An SEM study of peel-test adhesion specimens from plated coatings on anodized aluminum shows that failure can be categorized in three different modes: (1) specimens exhibiting poor adhesion strength, which fail at the anodic film/coating interface; (2) specimens with good adhesion strength, which fail by local fracture of the anodic film and (3) specimens with excellent adhesion strength , which fail when the applied load is greater than the strength of the alloy substrate. The effect of anodizing parameters and alloy composition on peel test failure are discussed.
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NASF Update: Paycheck Protection Program
The National Association for Surface Finishing (NASF) explains the latest details of the legislative package for the Paycheck Protection Program (PPP) that would reportedly allow more flexibility for surface finishers to spend forgivable loans for payrolls and expenses.
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Celebrities Who Once Worked in Electroplating
Over many years, AESF/NASF stalwart Jack Dini contributed a series of fascinating columns to Plating & Surface Finishing, under the title Fact or Fiction?. What follows is a welcome addition to his output for the NASF. Still the prolific writer, Jack discusses celebrities (both scientists and non-scientists) who once worked in electroplating.
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AES Research Project #41: Plating on Aluminum, Part 2: Morphology
Originally published in 1980, this paper was the second on AES Research Project #41, plating on aluminum, at the National Institute for Science and Technology. A study of the morphologies of zinc and tin immersion deposits on Al and its alloys showed that zinc formed epitaxial deposits on alloys, as noted on pure Al. Similarities exist between the zincate and stannate processes; in particular, the same crystallography orientations are active in both systems. Comparisons between zinc deposits produced from solutions containing ferric chloride and Rochelle salts and deposits from the same solution without these additions show that ferric chloride plays a fundamental role in the deposition process.
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AES Research Project #41: Plating on Aluminum, Part 1: A Literature Review
Originally published in 1978, this paper was the first of several on AES Research Project #41, a study of plating on aluminum, at the National Institute for Science and Technology. A review of immersion pretreatments for the plating on aluminum is presented. The zincate pretreatments dominate the literature, but innovations were reported which offer improved adhesion and corrosion performance. Finally, an updated bio on Dr. Lashmore’s work through the years is offered.
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Electro-codeposition of MCrAlY Coatings for Advanced Gas Turbine Applications - 9th Quarterly Report
The NASF Research Board has funded a research grant at the Tennessee Technological University, under the direction of Professor Ying Zhang. The objective is to study and optimize the MCrAlY electro-codeposition process to improve the coating oxidation/corrosion performance. In this reporting period, the study studied a sulfur-free fluoborate plating solution. Although the fluoborate solution is sulfur-free and offers high plating rates, the CrAlY powder was attacked by the fluoborate anion. The fluoborate-based plating bath may be suitable for codeposition of more inert particles but not for active CrAlY-based powders.
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NASF Update on Business Financing Under the CARES Act
Business Financing Under the CARES Act, a program aimed at providing funding during the coronavirus crisis, comes on the heels of concerns over the rollout of SBA’s forgivable loan program.
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NASF Update on EPA Enforcement Discretion Policy for Coronavirus Pandemic
The U.S. Environmental Protection Agency (EPA) has issued a policy memorandum indicating that it will exercise enforcement discretion for any non-compliance that may result from the COVID-19 pandemic.
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