Young’s modulus measurements of SiC coatings on spherical particles by using nanoindentation

Autor:	Xi Chen, Fan Yang, Ping Xiao, Jun Tan, Daxu Zhang, Timothy Abram, Eddie López-Honorato, P.J. Meadows, Xiaofeng Zhao
Rok vydání:	2009
Předmět:	Nuclear and High Energy Physics Materials science Isotropy Modulus Young's modulus Bending Nanoindentation chemistry.chemical_compound Grain growth symbols.namesake Nuclear Energy and Engineering chemistry Indentation Silicon carbide symbols General Materials Science Composite material
Zdroj:	Journal of Nuclear Materials. 393:22-29
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2009.05.001
Popis:	Spherical silicon carbide coatings are deposited by fluidised bed chemical vapour deposition for the application to Tristructural Isotropic (TRISO) coated fuel particles. The silicon carbide exhibits columnar structure and grows along the radial direction during deposition. In this work, two measurements are made with nanoindentation, one is measured vertically to the grain growth direction, which gives a Young’s modulus of 391.1 ± 12.9 GPa, and the other is measured along the grain growth direction which gives a Young’s modulus of 442.5 ± 13.3 GPa. Finite element analysis and a theoretical effort are introduced to estimate the bending contribution when the indentation is carried out on the external surface of SiC. The relationship between grain orientation of SiC and its Young’s modulus has been examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::280111882fb170f44459733b9fcfa268 https://doi.org/10.1016/j.jnucmat.2009.05.001 Zobrazit plný text záznamu Full Text from ScienceDirect