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The gaseous corrosion of two hot-pressed and one pressureless sintered Si(3)N(4) ceramics was investigated. Corrosion was carried out in the range 800-1400 C for exposure times of up to 100 hrs in 1 and 5 Vol% SO(2) in dry air. The presence of sulphur was evident on all samples up to 1300 C, and analysis using ESCA and EPMA indicated the formation of sulphates on the surface with a maximum in the region 900-1200 C.

Additional information

Authors: VEYRET J B, JRC Petten Estab. (NL);FORDHAM R J, JRC Petten Estab. (NL);BILLY M, University of Limoges (FR)
Bibliographic Reference: Paper presented: 3rd International Symposium; Ceramic Materials and Components for Engines, Las Vegas (US), Nov. 27-30 1988
Availability: Available from (1) as Paper EN 34307 ORA
Record Number: 198910209 / Last updated on: 1994-12-01
Original language: en
Available languages: en