dc.contributor.author | Lee, Dongwoo | |
dc.contributor.author | Sim, Gi-Dong | |
dc.contributor.author | Xiao, Kechao | |
dc.contributor.author | Vlassak, Joost J. | |
dc.date.accessioned | 2015-09-02T19:07:10Z | |
dc.date.issued | 2014 | |
dc.identifier | Quick submit: 2015-08-28T14:51:29-04:00 | |
dc.identifier.citation | Lee, Dongwoo, Gi-Dong Sim, Kechao Xiao, and Joost J. Vlassak. 2014. “ Low-Temperature Synthesis of Ultra-High-Temperature Coatings of ZrB 2 Using Reactive Multilayers .” The Journal of Physical Chemistry C 118 (36) (September 11): 21192–21198. doi:10.1021/jp505941g. | en_US |
dc.identifier.issn | 1932-7447 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:22063068 | |
dc.description.abstract | We demonstrate a route to synthesize ultra-high-temperature ceramic coatings of ZrB2 at temperatures below 1300 K using Zr/B reactive multilayers. Highly textured crystalline ZrB2 is formed at modest temperatures because of the absence of any oxide at the interface between Zr and B and the very short diffusion distance that is inherent to the multilayer geometry. The kinetics of the ZrB2 formation reaction is analyzed using high-temperature scanning nanocalorimetry, and the microstructural evolution of the multilayer is revealed using transmission electron microscopy. We show that the Zr/B reaction proceeds in two stages: (1) interdiffusion between the nanocrystalline Zr and the amorphous B layers, forming an amorphous Zr/B alloy, and (2) crystallization of the amorphous alloy to form ZrB2. Scanning nanocalorimetry measurements performed at heating rates ranging from 3100 to 10000 K/s allow determination of the kinetic parameters of the multilayer reaction, yielding activation energies of 0.47 and 2.4 eV for Zr/B interdiffusion and ZrB2 crystallization, respectively. | en_US |
dc.description.sponsorship | Engineering and Applied Sciences | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | American Chemical Society (ACS) | en_US |
dc.relation.isversionof | doi:10.1021/jp505941g | en_US |
dash.license | OAP | |
dc.title | Low-Temperature Synthesis of Ultra-High-Temperature Coatings of ZrB 2 Using Reactive Multilayers | en_US |
dc.type | Journal Article | en_US |
dc.date.updated | 2015-08-28T18:51:30Z | |
dc.description.version | Accepted Manuscript | en_US |
dc.rights.holder | D Lee, GD Sim, K Xiao, JJ Vlassak | |
dc.relation.journal | The Journal of Physical Chemistry C | en_US |
dash.depositing.author | Vlassak, Joost J. | |
dc.date.available | 2015-09-02T19:07:10Z | |
dc.identifier.doi | 10.1021/jp505941g | * |
dash.contributor.affiliated | Lee, Dongwoo | |
dash.contributor.affiliated | Vlassak, Joost | |