Work

Sol‐Gel Alumina Coating for Improved Cyclic Oxidation Resistance of Silicon Nitride

Year: 2003

Type: article

Abstract: A 25 nm thick α‐alumina layer was deposited on a turbine‐grade silicon nitride by sol‐gel dip coating and subsequent heat treatment in air at 1200°C. This layer had a nanometer grain structure. Silicon nitride protected by this thin layer showed a significant improvement in oxidation resistance over its uncoated counterpart after 200 cyclic exposures in air at 1250°C. The oxide layer grown on the coated silicon nitride also exhibited superior surface morphology, compared with the uncoated silicon nitride.

Source: Journal of the American Ceramic Society

DOI: 10.1111/j.1151-2916.2003.tb03528.x

Authors: Irina Tsarenko, Sang Park, Honghua Du, Woo Y. Lee

Institutions: Stevens Institute of Technology, American Ceramic Society

Language: English

Topic: Advanced ceramic materials synthesis

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Office of Naval Research, Oak Ridge National Laboratory

Award: G8876996369