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High temperature oxidation of nitride bonded SiC-ceramics

✍ Scribed by H.F López; W Phoomiphakdeephan

Book ID
117358490
Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
537 KB
Volume
36
Category
Article
ISSN
0167-577X

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High-temperature oxidation-protection CVD coatings for structural ceramics: Oxidation behaviour of CVD-coated reaction-bonded silicon nitride
✍ J Desmaison; N Roels; P Belair 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 688 KB

## Chemical vapour deposition of Si3N 4 by pyrolysis (1200-1275°C) of tetramethylsilane-ammonia-hydrogen mixtures (N:Si = 10) was used to protect reaction-bonded silicon nitride substrates against internal oxidation at 1000-1350 °C. The results reveal the existence of a critical thickness (6 gm)