Durability Study on Si-SiC Material for DPF NGK Insulators, Limited

Format:

Book

Conference/Event

Author/Creator:

Uchida, Y., author.

Conference Name:

SAE 2003 World Congress & Exhibition (2003-03-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2003-01-0384

Access Restriction:

Restricted for use by site license