TY - JOUR
T1 - Real-time dissolution of a compositionally complex alloy using inline ICP and correlation with XPS
AU - Qiu, Yao
AU - Liu, Ruiliang
AU - Gengenbach, Thomas
AU - Gharbi, Oumaïma
AU - Choudhary, Sanjay
AU - Thomas, Sebastian
AU - Fraser, Hamish L.
AU - Birbilis, Nick
N1 - Publisher Copyright:
© 2020, The Author(s).
PY - 2020/12
Y1 - 2020/12
N2 - The real-time dissolution of the single-phase compositionally complex alloy (CCA), Al1.5TiVCr, was studied using an inline inductively coupled plasma method. Compositionally complex alloys (CCAs), a term encompassing high entropy alloys (HEAs) or multi-principal element alloys (MPEAs), are—in general—noted for their inherently high corrosion resistance. In order to gain an insight into the dissolution of Al1.5TiVCr alloy, atomic emission spectroelectrochemistry was utilised in order to measure the ion dissolution of the alloy during anodic polarisation. It was revealed that incongruent dissolution occurred, with preferential dissolution of Al, and essentially no dissolution of Ti, until the point of alloy breakdown. Results were correlated with X-ray photoelectron spectroscopy, which revealed a complex surface oxide inclusive of unoxidised metal, and metal oxides in disproportion to the bulk alloying element ratio.
AB - The real-time dissolution of the single-phase compositionally complex alloy (CCA), Al1.5TiVCr, was studied using an inline inductively coupled plasma method. Compositionally complex alloys (CCAs), a term encompassing high entropy alloys (HEAs) or multi-principal element alloys (MPEAs), are—in general—noted for their inherently high corrosion resistance. In order to gain an insight into the dissolution of Al1.5TiVCr alloy, atomic emission spectroelectrochemistry was utilised in order to measure the ion dissolution of the alloy during anodic polarisation. It was revealed that incongruent dissolution occurred, with preferential dissolution of Al, and essentially no dissolution of Ti, until the point of alloy breakdown. Results were correlated with X-ray photoelectron spectroscopy, which revealed a complex surface oxide inclusive of unoxidised metal, and metal oxides in disproportion to the bulk alloying element ratio.
UR - http://www.scopus.com/inward/record.url?scp=85102413373&partnerID=8YFLogxK
U2 - 10.1038/s41529-020-0112-3
DO - 10.1038/s41529-020-0112-3
M3 - Article
SN - 2397-2106
VL - 4
JO - npj Materials Degradation
JF - npj Materials Degradation
IS - 1
M1 - 7
ER -