Characteristics of reaction-bonded porous silicon nitride honeycomb for DPF substrate
โ Scribed by Naomichi Miyakawa; Hironori Sato; Hiroshi Maeno; Hideo Takahashi
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 983 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0389-4304
No coin nor oath required. For personal study only.
โฆ Synopsis
Silicon nitride (Si 3 N 4 ) is a good candidate for a DPF substrate due to its excellent mechanical and thermal properties. A new process for producing porous silicon nitride is established and fundamental characteristics of fabricated silicon nitride honeycomb is evaluated, including mechanical properties and chemical stability against CeO 2 ash as well as pressure drop and soot regeneration behavior.
๐ SIMILAR VOLUMES
## Chemical vapour deposition of Si3N 4 by pyrolysis (1200-1275ยฐC) of tetramethylsilane-ammonia-hydrogen mixtures (N:Si = 10) was used to protect reaction-bonded silicon nitride substrates against internal oxidation at 1000-1350 ยฐC. The results reveal the existence of a critical thickness (6 gm)