Lee, DongwooSim, Gi-dongXiao, KechaoSeok Choi, YongVlassak, Joost2014-07-232013Lee, Dongwoo, Gi-Dong Sim, Kechao Xiao, Yong Seok Choi, and Joost J. Vlassak. 2013. “Scanning AC Nanocalorimetry Study of Zr/B Reactive Multilayers.” Journal of Applied Physics 114 (21): 214902.0021-89791089-7550http://nrs.harvard.edu/urn-3:HUL.InstRepos:12559592The reaction of Zr/B multilayers with a 50 nm modulation period has been studied using scanning AC nanocalorimetry at a heating rate of approximately \(10^3 K/s\). We describe a data reduction algorithm to determine the rate of heat released from the multilayer. Two different exothermic peaks are identified in the nanocalorimetry signal: a shallow peak at low temperature (200–650°C) and a sharp peak at elevated temperature (650–800°C). TEM observation shows that the first peak corresponds to heterogeneous inter-diffusion and amorphization of Zr and B while the second peak is due to the crystallization of the amorphous Zr/B alloy to form \(ZrB_2\).en-USZrB2multilayerscanning AC nanocalorimetryultra high temperature ceramicJournal Article2014-07-2310.1063/1.4833572