Effect of porosity on the indentation behaviour of nanoporous alumina films

Autor:	Bobji, Preeti Gupta, Pranav Y. Kalode, Prashant Pendyala
Rok vydání:	2011
Předmět:	Materials science Anodizing Nanoporous Mechanical Engineering chemistry.chemical_element Surfaces and Interfaces Nanoindentation Surfaces Coatings and Films chemistry Aluminium Indentation Nanoindenter Deformation (engineering) Composite material Porosity
Zdroj:	International Journal of Surface Science and Engineering. 5:51
ISSN:	1749-7868 1749-785X
DOI:	10.1504/ijsurfse.2011.039990
Popis:	Anodising aluminium in an acid electrolyte results in a porous alumina film. The pores are uniformly distributed and their structure can be controlled by varying the anodising parameters. In this study, the pore structure of the anodic alumina films is varied systematically by varying the anodising time and a subsequent pore widening chemical etch. The indentation behaviour of the resulting film is studied using a depth sensing nanoindenter. The hardness of the films was found to be decreasing with decreasing solid area fraction. Understanding the deformation behaviour of nanoporous alumina would help tailoring the mechanical properties by tuning the geometry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1262ae3659c9fcc8e61a91a301529e3b https://doi.org/10.1504/ijsurfse.2011.039990 Zobrazit plný text záznamu