Encapsulation of a gradient Al2O3 layer on hierarchical structured substrate via two-step hybrid processes

Encapsulation of a gradient Al2O3 layer on hierarchical structured substrate via two-step hybrid processes

The gradient Al2O3 layer coated bimodal structured composite substrate was fabricated using combined chemical and hydrothermal processes. Selective etching was performed to remove micrometer-sized α-Al dendrites from the ultrafine structured matrix. Simultaneously, a hydrothermal oxidation process w...

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Bibliographic Details
Main Authors: Hae Jin Park, Joon Hak Lee, Young Seok Kim, Sang Chul Mun, Taek Jib Choi, Elyorjon Jumaev, Sung Hwan Hong, Jeong Tae Kim, Jin Man Park, Ki Buem Kim
Format: Article
Language:English
Published: Elsevier 2019-04-01
Series:Materials & Design
Online Access:http://www.sciencedirect.com/science/article/pii/S026412751930053X
Description
Summary:The gradient Al2O3 layer coated bimodal structured composite substrate was fabricated using combined chemical and hydrothermal processes. Selective etching was performed to remove micrometer-sized α-Al dendrites from the ultrafine structured matrix. Simultaneously, a hydrothermal oxidation process was used to grow Al2O3 on the surface of the porous structured substrate. In particular, the architecture of coated metal oxide (Al2O3) can be altered from a rectangular to a pyramidal shape depending on the hydrothermal process time. Keywords: Ultrafine eutectic composite, Porous materials, Dealloying, Hydrothermal process
ISSN:0264-1275

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