Prof. Adrien?Couet學(xué)術(shù)報(bào)告會(huì)
發(fā)布時(shí)間：2025-10-23   閱讀：1304

題目：Chemistry-Driven?Corrosion?in?Molten?Salts:?from?High-Throughput?Screening?to?Operando?Spectroscopy?and?Irradiation

時(shí)間：2025年10月23日 10:00-12:00

地點(diǎn)：機(jī)械與動(dòng)力工程學(xué)院 F310會(huì)議室

邀請(qǐng)人：王亞飛 副教授、石偉群 教授（核燃料循環(huán)與核材料研究所）


Biography

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Adrien?Couet?is?a?Professor?in?the?Nuclear?Engineering?and?Engineering?Physics?Department?at?the?University?of?Wisconsin-Madison,?where?he?leads?the?MaDCoR?lab?(Materials?Degradation?under?Corrosion?and?Radiation).?Previously?a?nuclear?materials?research?engineer?at?EDF,?he?earned?his?Ph.D.?in?Nuclear?and?Mechanical?Engineering?from?Penn?State?in?2014?on?fuel-cladding?corrosion.?His?group?studies?materials?degradation?in?extreme?environments,?especially?light-water?and?molten-salt?reactors,?using?advanced?characterization?and?first-principles?modeling,?with?recent?work?in?alloy?design?via?high-throughput?experiments?and?machine?learning.?MaDCoR’s?projects?span?PWR?cladding?corrosion,?MSR?structural?materials,?and?irradiation-resistant?CCAs?for?fission?and?fusion.?He?also?directs?the?UW?Ion?Beam?Laboratory?and?co-organizes?the?Nuclear?Innovation?Bootcamp.


Abstract

Corrosion?in?molten?fluoride?and?chloride?salts?is?governed?as?much?by?salt?chemistry?(redox?potential,?metal-ion?speciation,?impurities)?as?by?alloy?composition?and?temperature.?I?will?first?outline?the?chemical?levers?that?control?electrochemical?dissolution?and?dealloying,?and?how?these?couple?to?microstructure.?I’ll?then?highlight?four?complementary?approaches?we?use?to?interrogate?this?landscape:?(1)?a?high-throughput?molten-salt?droplet?platform?screening?large?alloy/composition?spaces?and?extracting?quantitative?loss?metrics?and?drivers’?identification;?(2)?UV–Vis?spectroscopy?to?track?in?situ?salt?chlorine?activity?as?function?of?chloro-acidity;?(3)?operando?X-ray?absorption?spectroscopy?to?follow?the?local?coordination?and?oxidation?state?of?redox?buffers?and?corrosion?products;?and?(4)?micro-electrochemistry?to?map?local?currents?and?diffusion,?resolving?gradients?at?alloy/salt?interfaces.?I?will?close?with?new?results?on?in-situ?irradiation?effects?during?molten-salt?exposure,?showing?how?displacement?damage?and?irradiation-modified?redox?conditions?can?accelerate?selective?dissolution.?Together,?these?tools?link?chemistry?to?mechanism,?enabling?data-guided?selection?and?qualification?of?alloys?and?salts?for?advanced?systems,?including?MSRs?and?high-heat-flux?components.


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