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Durability Study on Si-SiC Material for DPF
Technical Paper
2003-01-0384
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
DPF substrate is exposed to high temperature during regeneration and to acid components in exhaust gas. Therefore, DPF material needs to have an excellent thermal shock resistance, thermal and chemical stability to the sulfuric acid.
This paper presents the durability test results of the Si-SiC DPF material. In particular, thermal shock resistance, oxidation resistance and acid resistance parameters have been evaluated by comparison with recrystallized-SiC and cordierite materials. As the results, the strength of Si-SiC decreased between ΔT=500 and 600deg.C, while that of recrystallized-SiC decreased between ΔT=300 and 400deg.C. The result is attributed to the difference in the elastic modulus. About oxidation resistance, material properties of Si-SiC, compared between pre- and post- oxidation, have greater stability than those of recrystallized SiC. And naturally, both SiC materials have superior acid resistance to cordierite.
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Authors
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Citation
Uchida, Y., Ichikawa, S., Harada, T., and Hamanaka, T., "Durability Study on Si-SiC Material for DPF," SAE Technical Paper 2003-01-0384, 2003, https://doi.org/10.4271/2003-01-0384.Also In
Diesel Emission Measurement, Modeling, & Control from the SAE 2003 World Congress on CD-ROM
Number: SP-1754CD; Published: 2003-03-03
Number: SP-1754CD; Published: 2003-03-03
References
- Miwa S. Abe F. Hamanaka T. Yamada T. Miyairi Y. “Diesel Particulate Filters Made of Newly Developed SiC” SAE paper 2001-01-0192
- Testing methods for elastic modulus of high performance ceramics 1995
- Kingery. W.D. J.Am.Ceram.Soc. 38 1955 3
- Goto T. Homma H. Hirai T. Narushima T. Iguchi Y. High Temperature Corrosion and Material Chemistry”