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|1. (WO2018159556) HONEYCOMB SUBSTRATE FOR CATALYST SUPPORT, AND CATALYTIC CONVERTER FOR EXHAUST GAS PURIFICATION|
|Applicants:||NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
|Title:||HONEYCOMB SUBSTRATE FOR CATALYST SUPPORT, AND CATALYTIC CONVERTER FOR EXHAUST GAS PURIFICATION|
[Problem] The purpose of the invention is to improve adhesion of a catalyst layer and an oxide film in a honeycomb substrate for catalyst support. [Solution] A honeycomb substrate for catalyst support used in purification of exhaust gas is characterized by comprising a honeycomb body and an oxide film that is formed on the surface of the honeycomb body and that has α-alumina as a main component, and in that the oxide film includes multiple oxide projections that are formed to be dispersed on the film surface and that comprise a contracted shape in which the width becomes narrower near the honeycomb body, and the density of the projection formations on the film surface is 0.20 (pieces/μm2) – 3.00 (pieces/μm2).