A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HONEYCOMB STRUCTURE, ELECTRIC HEATING TYPE CARRIER AND EXHAUST GAS PURIFICATION DEVICE
To provide a honeycomb structure with improved uniformity of calorific distribution.SOLUTION: A honeycomb structure comprises: a ceramic honeycomb structure part; and a pair of electrode layers provided on an external surface of an outer peripheral wall, extending in a band shape in an extension direction of cells, and provided so as to face each other across a central axis of the honeycomb structure part, where the ceramic contains at least silicon and silicon carbide, and satisfies one or both of the following conditions (1) and (2): (1) a silicon content in the ceramic is 21 to 30 mass%; silicon contains P and B; and a value (P-B amount) obtained by subtracting a B concentration from a P concentration in the silicon is 20 ppm by mass or more; (2) a silicon carbide content in the ceramic is 50 mass% or more; silicon carbide contains Al and N; and the value (Al-N amount) obtained by subtracting an N concentration from an Al concentration in the silicon carbide is 130 ppm by mass or more and 450 ppm by mass or less.SELECTED DRAWING: Figure 1
【課題】発熱分布の均一性が改善されたハニカム構造体を提供する。【解決手段】セラミックス製のハニカム構造部と、外周壁の外表面に設けられてセルの延びる方向に帯状に延び、ハニカム構造部の中心軸を挟んで対向するように設けられた一対の電極層とを備え、セラミックスが少なくとも珪素と炭化珪素を含み、以下の（１）及び（２）の一方又は両方の条件を満たすハニカム構造体。（１）セラミックス中の珪素含有量が２１～３０質量％であり、珪素はＰ及びＢを含み、珪素中のＰ濃度からＢ濃度を差し引いた値（Ｐ－Ｂ量）が２０質量ｐｐｍ以上である。（２）セラミックス中の炭化珪素含有量が５０質量％以上であり、炭化珪素はＡｌ及びＮを含み、炭化珪素中のＡｌ濃度からＮ濃度を差し引いた値（Ａｌ－Ｎ量）が１３０質量ｐｐｍ以上４５０質量ｐｐｍ以下である。【選択図】図１
HONEYCOMB STRUCTURE, ELECTRIC HEATING TYPE CARRIER AND EXHAUST GAS PURIFICATION DEVICE
To provide a honeycomb structure with improved uniformity of calorific distribution.SOLUTION: A honeycomb structure comprises: a ceramic honeycomb structure part; and a pair of electrode layers provided on an external surface of an outer peripheral wall, extending in a band shape in an extension direction of cells, and provided so as to face each other across a central axis of the honeycomb structure part, where the ceramic contains at least silicon and silicon carbide, and satisfies one or both of the following conditions (1) and (2): (1) a silicon content in the ceramic is 21 to 30 mass%; silicon contains P and B; and a value (P-B amount) obtained by subtracting a B concentration from a P concentration in the silicon is 20 ppm by mass or more; (2) a silicon carbide content in the ceramic is 50 mass% or more; silicon carbide contains Al and N; and the value (Al-N amount) obtained by subtracting an N concentration from an Al concentration in the silicon carbide is 130 ppm by mass or more and 450 ppm by mass or less.SELECTED DRAWING: Figure 1
【課題】発熱分布の均一性が改善されたハニカム構造体を提供する。【解決手段】セラミックス製のハニカム構造部と、外周壁の外表面に設けられてセルの延びる方向に帯状に延び、ハニカム構造部の中心軸を挟んで対向するように設けられた一対の電極層とを備え、セラミックスが少なくとも珪素と炭化珪素を含み、以下の（１）及び（２）の一方又は両方の条件を満たすハニカム構造体。（１）セラミックス中の珪素含有量が２１～３０質量％であり、珪素はＰ及びＢを含み、珪素中のＰ濃度からＢ濃度を差し引いた値（Ｐ－Ｂ量）が２０質量ｐｐｍ以上である。（２）セラミックス中の炭化珪素含有量が５０質量％以上であり、炭化珪素はＡｌ及びＮを含み、炭化珪素中のＡｌ濃度からＮ濃度を差し引いた値（Ａｌ－Ｎ量）が１３０質量ｐｐｍ以上４５０質量ｐｐｍ以下である。【選択図】図１
HONEYCOMB STRUCTURE, ELECTRIC HEATING TYPE CARRIER AND EXHAUST GAS PURIFICATION DEVICE
ハニカム構造体、電気加熱型担体及び排ガス浄化装置
TANAKA HIROTOMO (author) / INOUE TAKAYUKI (author) / MIZOGUCHI TAKASHI (author)
2024-10-11
Patent
Electronic Resource
Japanese
IPC:
F01N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
,
Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein
/
B01D
SEPARATION
,
Trennen
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C04B
Kalk
,
LIME
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