New Materials Engineering Study Findings Recently Were Reported by Researchers at Jiao Tong University

摘要

2011 DEC 14 - (VerticalNews.com) -- "FeCrAlY sheets of different thicknesses (0.477-7.608 mm) have been oxidized at 1200 degrees C in air for 25 h to form alumina scales, with cooling to room temperature at rates from 1 degrees C/min to 100 degrees C/min. Spallation of the alumina scale occurs with intermediate cooling rates, e.g. 5, 10 and 30 degrees C/min, whereas no spallation is evident in samples with the highest cooling rate of 100 degrees C/min, suggesting that the residual stress is not the only factor to drive the spallation," investigators in Shaanxi, People's Republic of China report.