Pressure-dependent topographic evolutions of cold-sintered zinc oxide surfaces

Autor:	Sun Hwi Bang, Clive A. Randall
Rok vydání:	2021
Předmět:	Surface (mathematics) Materials science chemistry.chemical_element General Chemistry Zinc Dihedral angle Grain growth chemistry Materials Chemistry Grain boundary Composite material Geometric modeling Anisotropy Groove (music)
Zdroj:	Journal of Materials Chemistry C. 9:17313-17318
ISSN:	2050-7534 2050-7526
Popis:	By applying atomic force microscope to the flat in-plane polycrystalline microstructure, pressure-dependent topographic evolutions can be studied with respect to surface dihedral angle and groove geometry. Using cold-sintered zinc oxide densified at 200°C as a model system, this study demonstrates an experimental methodology for quantification of relative grain boundary energetics in cold-sintered materials system and an associated geometric model for connecting the morphological change and underlying mechanochemical phenomenon under various uniaxial pressures ranging from 70 to 475 MPa. Depending on the applied pressure, anisotropic grain growth, normal grain growth, and coarsening are distinctively observed according to the changes in the groove geometry, suggesting that the growth kinetics is can be considered as a function of pressure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a10c3137a575361a335fec3428b5c228 https://doi.org/10.1039/d1tc04651a Zobrazit plný text záznamu