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- Title
Reaction of Si3N4 with 25%Cr-20%Ni austenitic stainless steel under nitrogen or argon atmosphere.
- Authors
Shimoo, T.; Okamura, K.; Shibata, D.
- Abstract
In relation to joining of silicon nitride ceramics to metal, an extensive experimental study of the reaction between Si3N4 and 25%Cr-20%Ni austenitic stainless steel was conducted. Reaction rates were determined by thermogravimetry (TG) and reaction products were examined by X-ray diffraction. Cr2N, CrN, Cr3Ni5Si2 and Fe3Si were produced under a nitrogen atmosphere. Fe5Si3 and FeSi also were produced under an argon atmosphere. The reaction products were analyzed according to thermodynamic considerations. The incubation period was found in TG curves and it was much shorter under a nitrogen atmosphere than under an argon atmosphere. The rates at early stages and late stages of reaction were given by linear and parabolic rate laws, respectively. Possible reaction mechanisms were proposed based on the results of the TG analysis.
- Subjects
AUSTENITIC stainless steel; SILICON nitride; CHEMICAL kinetics; THERMODYNAMICS; X-ray diffraction; THERMOGRAVIMETRY
- Publication
Journal of Materials Science, 2000, Vol 35, Issue 21, p5485
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/A:1004829214474