naa a22 4500 510770657 CHVBK 20180411083212.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11837-013-0706-0 doi (NATIONALLICENCE)springer-10.1007/s11837-013-0706-0 Thermogravimetric Study of Oxidation-Resistant Alloys for High-Temperature Solar Receivers [Elektronische Daten] [Rene Olivares, Wes Stein, Paul Marvig] Three special alloys likely to be suitable for high-temperature solar receivers were studied for their resistance to oxidation up to a temperature of 1050°C in dry atmospheres of CO2 and air. The alloys were Haynes HR160, Hastelloy X, and Haynes 230, all nickel-based alloys with greater than 20% chromium content. The oxidation rate of specimens cut from sample master alloys was followed by thermogravimetry by continuously monitoring the weight change with a microbalance for a test duration of 10h. The corrosion resistance was deduced from the total weight increase of the specimens and the morphology of the oxide scale. The surface oxide layer formed (scale) was characterized by scanning electron microscopy and energy dispersive x-ray spectroscopy and in all cases was found to be chromia. Oxidation was analyzed by means of parabolic rate law, albeit in some instances linear breakaway corrosion was also observed. For the temperature range investigated, all alloys corroded more in CO2 than in air due to the formation of a stronger and more protective oxide scale in the presence of air. At 1000°C, the most resistant alloy to corrosion in CO2 was Haynes 230. Alloy Haynes HR160 was the most oxidized alloy at 1000°C in both CO2 and air. Hastelloy X oxidized to a similar extent in CO2 at both 900°C and 1000°C, but in air, it resisted oxidation better at 1000°C than either at 900°C or 1000°C. TMS, 2013 Olivares Rene CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut Stein Wes CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut Marvig Paul CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut JOM Springer US; http://www.springer-ny.com 65/12(2013-12-01), 1660-1669 1047-4838 65:12<1660 2013 65 11837 https://doi.org/10.1007/s11837-013-0706-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0706-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Olivares Rene CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut NATIONALLICENCE 700 1- Stein Wes CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut NATIONALLICENCE 700 1- Marvig Paul CSIRO Energy Technology, 2304, Mayfield West, NSW, Australia aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/12(2013-12-01), 1660-1669 1047-4838 65:12<1660 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer