October_2021_AMP_Digital

HIGHL IGHTS A D V A N C E D M A T E R I A L S & P R O C E S S E S | O C T O B E R 2 0 2 1 6 1 HTS Award Deadlines ASM HTS/Bodycote Best Paper in Heat Treating Contest The ASM Heat Treating Society established the Best Paper in Heat Treating Award in 1997 to recognize a paper that represents advancement in heat treating technology, promotes heat treating in a substantial way, or represents a clear advancement in managing the business of heat treating. The award, endowed by Bodycote Thermal Pro- cess-North America, is open to all students, in full time or part time education, at universities (or their equivalent) or colleges. Students who have graduated within the past three years and whose paper describes work completed while an undergraduate or post graduate student are also eligible. The winner will receive a plaque and a check for $2500. Paper submission deadline is March 1, 2022. To view rules for eligibility and paper submission, visit the Heat Treating Society website a t hts.asminternational. org and click on Membership & Networking and Society Awards. For additional information, or to submit a nomi- nation, contact Mary Anne Jerson at 440.671.3877 or email maryanne.jerson@asminternational.org. any member of EDFAS is expected to further the Society’s goals through service, this award shall recognize those who provide an exceptional amount of effort in their service to the Society. Nomination deadline for both awards is March 1, 2022. For rules and nomination forms, visit the EDFAS website at edfas.org, click on Membership & Networking and then Society Awards, or contact Mary Anne Jerson at 440.671.3877 or maryanne.jerson@asminternational.org . Seeking Nominations for EDFAS Awards The ASM Electronic Device Failure Analysis Society (EDFAS) established two awards to recognize the accom- plishments of its members. The awards will be given at ISTFA 2022. Nominate a worthy colleague today! EDFAS Lifetime Achievement Award The EDFAS Lifetime Achievement Award was estab- lished by the EDFAS Board of Directors in 2015 to recognize leaders in the EDFAS community who have devoted their time, knowledge, and abilities to the advancement of the electronic device failure analysis industry. EDFAS President’s Award The EDFAS President’s Award shall recognize excep- tional service to EDFAS and the electronic device failure analysis community. Examples of such service include com- mittee service, service on the board of directors, organiza- tion of conferences or symposia, development of education courses, and student and general public outreach. While EMERGING PROFESSIONALS Using Electrochemistry to Understand Materials Degradation Ho Lun Chan and Debashish Sur From the Iron Age to the Bronze Age to our current Steel Plus Superalloy Age, corrosion has been a daunting barrier that restrains the lifespan and application of metal- lic materials. The first paper on corrosion was published by French chemist L.J. Thenard in 1818 describing the elec- trochemical nature of corrosion [1] . After nearly 200 years of research and development, we are at the time when electro- chemical measurements can be performed from the nano to macro-scale in either atmospheric or high-temperature conditions. Nevertheless, electrochemistry encompasses its own complex array of theories that need to be coupled with analytical measurements (e.g., SEM, XPS, Raman) so that the underlying properties that define corrosion and its degradation can be revealed. Here is a brief overview: 1) Open-circuit potential (E oc ): E oc is probably the simplest measurement to make when exposing a metal to a solution medium. It directly reflects the metal stability in the corrosive over time. The potential value itself is defined by a mix of thermody- namic and kinetic factors, and therefore, it should never be ignored. 2) DC electrochemistry: DC potential (i.e., driving force) or current (i.e., reactiv- ity) is applied on a corrodent either at a fixed scan rate or magnitude, and may be considered as an accelerated cor- rosion test. ASTM standards (e.g., G59-97, G61-86) provide guidance on performing and analyzing these experiments. 3) Electrochemical impedance spectroscopy (EIS): AC potential or current is applied on the corrodent at a range of frequency. Result can be represented through EMERGING PROFESSIONALS