TY - GEN
T1 - Evaluation of hot corrosion resistance of directionally solidified nickel-based superalloy
AU - Sozańska, Maria
AU - Kościelniak, Barbara
AU - Swadźba, Lucjan
N1 - Publisher Copyright:
© (2015) Trans Tech Publications, Switzerland.
PY - 2015
Y1 - 2015
N2 - The turbine blades made of directionally solidified nickel-based superalloys are exposed to combination of high temperature and exhaust fumes, in which appear corrosion promoting elements like sulphur, sodium and vanadium (hot corrosion). Corrosion resistance of superalloys is mainly dependent on their structure and chemical composition. Therefore, it is important to be aware of the correlation between the hot corrosion and changes in chemical composition and morphology of a surface of the material. The following paper presents the influence of sulphur on the microstructure of directionally solidified nickel-based superalloy. The research was carried out in Na2SO4 environment at two temperatures of 850 oC and 900 oC (below and above the melting point of salt, 884 °C). The results show scale morphology on material surface and changes in chemical composition of surface of nickel superalloy.
AB - The turbine blades made of directionally solidified nickel-based superalloys are exposed to combination of high temperature and exhaust fumes, in which appear corrosion promoting elements like sulphur, sodium and vanadium (hot corrosion). Corrosion resistance of superalloys is mainly dependent on their structure and chemical composition. Therefore, it is important to be aware of the correlation between the hot corrosion and changes in chemical composition and morphology of a surface of the material. The following paper presents the influence of sulphur on the microstructure of directionally solidified nickel-based superalloy. The research was carried out in Na2SO4 environment at two temperatures of 850 oC and 900 oC (below and above the melting point of salt, 884 °C). The results show scale morphology on material surface and changes in chemical composition of surface of nickel superalloy.
KW - Chemical composition
KW - Directionally solidified nickel base superalloy
KW - Hot corrosion
KW - Microstructure
UR - https://www.scopus.com/pages/publications/84924561671
U2 - 10.4028/www.scientific.net/SSP.227.337
DO - 10.4028/www.scientific.net/SSP.227.337
M3 - Conference contribution
AN - SCOPUS:84924561671
T3 - Solid State Phenomena
SP - 337
EP - 340
BT - Corrosion and Surface Engineering
A2 - Michalska, Joanna
A2 - Sowa, Maciej
PB - Trans Tech Publications Ltd.
T2 - International Scientific Conference Corrosion, 2014
Y2 - 18 November 2014 through 21 November 2014
ER -