Title

Surface Chemistry Of Nextel-720, Alumina And Nextel-720/Alumina Ceramic Matrix Composite (Cmc) Using Xps-A Tool For Nano-Spectroscopy

Keywords

Aluminosilicate; Ceramic matrix composites; Gas turbines; Nextel-720 fiber; TEM; XPS or ESCA

Abstract

Oxide-based ceramic matrix composites (CMCs) are prime candidates for high temperature turbine applications. Increasing demand of CMCs necessitates the development of quality monitoring procedures. Sol-gel derived Nextel-720 fiber/alumina matrix CMC is one of the potential candidate material for land-based gas turbine applications. X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were utilized to investigate any surface/interface chemical alteration of the Nextel-720 fiber reinforcement and the alumina matrix during fabrication. The calculated XPS spectra of the composite were obtained by simply adding the spectra of the as-received Nextel-720 fiber and the alumina matrix. The calculated XPS spectra and the acquired XPS Al(2p), Si(2p 3 ), and O(1s) spectra from the as-received materials were compared using a superimposition method to investigate any chemical alteration during composite fabrication for quality control measures. This paper is aimed to serve as a reference for future XPS studies of CMCs exposed to aggressive turbine environments. © 2002 Elsevier Science B.V. All rights reserved.

Publication Date

1-15-2002

Publication Title

Applied Surface Science

Volume

185

Issue

3-4

Number of Pages

183-196

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0169-4332(01)00594-3

Socpus ID

0037080443 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037080443

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