Title

Oxygen Diffusion Through Al-Doped Amorphous Sio 2

Keywords

Carbonitrides; Diffusivity measurements; Error function modeling; Experimental study; Mass spectrometry; Oxide systems; Tracer diffusivity

Abstract

Oxygen (O) diffusion through pure and aluminum (Al)-doped amorphous silica is investigated by using secondary ion mass spectrometry to profile the diffusion of an 18O tracer. The oxides are formed by the thermal oxidation of polymer-derived SiCN and SiAlCN ceramics. The authors demonstrate that a small amount of Al dopant can significantly inhibit both the interstitial and network diffusion of O. The activation energy of O network diffusion for Al-doped silica is two times higher than that for pure silica. The results are discussed in terms of the modification of Al doping on the network structure of the otherwise pure silica. © ASM International.

Publication Date

12-1-2006

Publication Title

Journal of Phase Equilibria and Diffusion

Volume

27

Issue

6

Number of Pages

671-675

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1361/154770306X153729

Socpus ID

33845796536 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845796536

This document is currently not available here.

Share

COinS