March 27, 2019
By Sammy Miles, Managing Editor in Chief, CORROSION journal
2019’s Plenary Lecturer, Digby D. Macdonald, kicked off Tuesday. Macdonald presented to a packed house about the initiation of pitting corrosion and the capabilities to accurately predict passivity breakdown.
Macdonald focused on aluminum-lithium (Al-Li) alloys, commonly used in the aerospace industry to help with light weighting. He guided the audience through the formation of blisters on the surface of alloys, and the seven reactions that occur according to the Point Defect Model. He discussed how we can predict the distribution of breakdown on the surface of the alloys.
Macdonald commented that many of the pits will “die,” comparing the lifecycle of humans and pits when they are in direct competition for resources with others close by.He noted that cracks nucleate at dead pits and discussed the influence of other compounds on the breakdown potential.
Macdonald concluded by stating that no only can we predict passivity breakdown locally,we have the tools to do it accurately.
When it comes to protecting the public from liquid/gas pipeline failures—particularly those of a potentially catastrophic nature—NACE members play a vital role. To that end,CORROSION 2019 hosted a forum in which industry experts, including the associate administrator of the Pipeline and Hazardous Materials Safety Administration (PHMSA), addressed the issue of corrosion in pipeline safety.
NACE Foundation’s 24th annual NACE Race 5K completed on Sunday, March 24th, raising funds for STEM disciplines. Medals were awarded to the top three winners in the men’s and women’s divisions.
The importance of routine inspection and documentation of aboveground storage tanks (ASTs)—whether required daily, weekly, monthly, or annually—was the focus of a training session on Wednesday afternoon during CORROSION 2019. Presented by Pat Keo of TTI Environmental, Inc., the training incorporated all aspects of inspecting ASTs.