Title

Silicoaluminum Carbonitride With Anomalously High Resistance To Oxidation And Hot Corrosion

Keywords

Hot corrosion; Oxidation; PDC; Silicoaluminum carbonitride ceramics

Abstract

In this communication we report for the first time that amorphous silicoaluminum carbonitride (SiAlCN) ceramics possess anomalously high resistance to oxidation and hot-corrosion. The materials were synthesized by thermal decomposition of polymer precursors.[18] The oxidation kinetics of the materials was determined at 1 200°C in dry air by measuring the thickness of the oxide scale as a function of annealing times up to 200 h. The hot-corrosion behavior was studied by scanning electron microscopy (SEM) observation on the surfaces of the materials that were annealed in either NaCl or water vapor environments at 1 200°C for 50 h. The experiments were performed on two SiAlCN ceramics with different aluminum content (see table 1); the hot-corrosion experiments were also performed on SiCN without aluminum for comparison. A mechanism underlying the observed phenomena is discussed.

Publication Date

6-1-2005

Publication Title

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

Volume

34

Issue

SUPPL. 1 PART 1

Number of Pages

488-489

Document Type

Article

Personal Identifier

scopus

Socpus ID

33845329547 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845329547

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