JPH0975753A - Honeycomb body and its production - Google Patents
Honeycomb body and its productionInfo
- Publication number
- JPH0975753A JPH0975753A JP7239894A JP23989495A JPH0975753A JP H0975753 A JPH0975753 A JP H0975753A JP 7239894 A JP7239894 A JP 7239894A JP 23989495 A JP23989495 A JP 23989495A JP H0975753 A JPH0975753 A JP H0975753A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- corrugated
- metal
- flat plate
- flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 abstract description 10
- 229910017082 Fe-Si Inorganic materials 0.000 abstract description 9
- 229910017133 Fe—Si Inorganic materials 0.000 abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 238000005219 brazing Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004453 electron probe microanalysis Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910000676 Si alloy Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 2
- 229910001257 Nb alloy Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排ガス浄化触媒用
メタル担体に用いられるハニカム体およびその製造方法
に関する。TECHNICAL FIELD The present invention relates to a honeycomb body used for a metal carrier for an exhaust gas purifying catalyst and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】自動車などの内燃機関から排出される排
ガスには、炭化水素（ＨＣ）、一酸化炭素（ＣＯ）、窒
素酸化物（ＮＯX ）などの有害成分が含まれるため、排
気系には排ガス浄化触媒が設けられ、これら有害成分を
酸化・還元反応により除去し、浄化された排ガスが排出
されるように構成されている。Exhaust gas emitted from internal combustion engines such as automobiles contains harmful components such as hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NO x ), so that the exhaust system contains them. An exhaust gas purifying catalyst is provided to remove these harmful components by an oxidation / reduction reaction, and the purified exhaust gas is discharged.
【０００３】このような排ガス浄化用触媒としては、排
ガスとの接触面積が大きいことが望まれ、多数のハニカ
ム通路を持つハニカム体表面にアルミナなどの触媒担持
層が形成され、その触媒担持層に白金などの触媒金属を
担持したものが多く用いられている。For such an exhaust gas purifying catalyst, it is desired that the contact area with the exhaust gas is large, and a catalyst supporting layer such as alumina is formed on the surface of a honeycomb body having a large number of honeycomb passages. A material carrying a catalytic metal such as platinum is often used.
【０００４】多数のハニカム通路を持つハニカム体とし
ては、従来コージェライトなどの耐熱性セラミックスか
ら一体成形されたモノリス担体が多く用いられてきた。
しかしセラミックスには、脆さと熱伝導率が低いという
不具合があるため、近年では金属箔状の平板と波板を交
互に複数枚積層したり、巻回することでハニカム通路を
形成したハニカム体が用いられている。As a honeycomb body having a large number of honeycomb passages, a monolith carrier integrally formed from heat-resistant ceramics such as cordierite has been widely used.
However, since ceramics have drawbacks such as brittleness and low thermal conductivity, in recent years, a honeycomb body in which a plurality of metal foil-like flat plates and corrugated plates are alternately laminated or wound to form a honeycomb passage is formed. It is used.
【０００５】排ガスは流路の軸芯部が最も高温であり、
外周部ほど低温になる。一方、触媒反応は高温ほど活発
である。従ってこのような排ガスを排ガス浄化用触媒に
通した場合には、外周部で触媒反応が起こりにくく、浄
化が低くなるおそれがある。しかし金属製のハニカム体
と外筒とからなるメタル担体を用いれば、金属の優れた
熱伝導特性により外周部も速やかに高温になるので、そ
のような不具合が防止される。また箔状の平板と波板を
用いるので、強度を有しながら軽量であり、取扱いも容
易である。Exhaust gas has the highest temperature at the axial center of the flow path,
The temperature becomes lower toward the outer periphery. On the other hand, the catalytic reaction is more active at higher temperatures. Therefore, when such an exhaust gas is passed through the exhaust gas purifying catalyst, the catalytic reaction is unlikely to occur in the outer peripheral portion, and the purification may be low. However, if a metal carrier composed of a metal honeycomb body and an outer cylinder is used, such an inconvenience is prevented because the outer peripheral portion of the metal carrier quickly becomes high in temperature due to the excellent heat conduction characteristics of the metal. Moreover, since a foil-shaped flat plate and a corrugated plate are used, they are strong and lightweight, and easy to handle.
【０００６】このメタル担体は、金属箔状の平板とその
平板をコルゲート加工することによって形成された波板
とを重ねて巻回し、平板と波板との当接部をロウ付けや
拡散接合により接合されるのが一般的である。そして一
般に最外周は平板とされ、金属製の外筒に挿入されて外
筒とも接合されて用いられる。In this metal carrier, a flat plate in the form of a metal foil and a corrugated plate formed by corrugating the flat plate are superposed and wound, and a contact portion between the flat plate and the corrugated plate is brazed or diffusion bonded. It is generally joined. Generally, the outermost circumference is a flat plate, which is inserted into a metal outer cylinder and joined to the outer cylinder for use.
【０００７】[0007]
【発明が解決しようとする課題】近年の自動車エンジン
の高性能化により、排ガス温度は従来に比べて著しく高
温となる場合がある。ところが金属はセラミックスより
熱膨張率が高く、メタル担体にはその特性に起因する不
具合があることがわかってきた。Due to the high performance of automobile engines in recent years, the exhaust gas temperature may become significantly higher than in the past. However, it has been found that metal has a higher coefficient of thermal expansion than ceramics, and the metal carrier has a defect due to its characteristics.
【０００８】つまり高温の排ガスにより加熱されたハニ
カム体は熱膨張するのであるが、外筒により径方向の膨
張が規制されているから、その結果軸方向へ大きく膨張
しようとする。しかし最外周の平板は外筒に接合されて
いるため外周部の膨張は規制され、ハニカム体には外周
部との間に熱応力が発生する。そしてこの熱応力により
ハニカム体には亀裂が発生し、その亀裂の発展によりハ
ニカム体が外筒から位置ずれする場合もあることが明ら
かとなった。That is, the honeycomb body heated by the high-temperature exhaust gas thermally expands, but the expansion in the radial direction is restricted by the outer cylinder, and as a result, the honeycomb body tends to expand greatly in the axial direction. However, since the outermost flat plate is joined to the outer cylinder, expansion of the outer peripheral portion is restricted, and thermal stress is generated between the honeycomb body and the outer peripheral portion. It was also clarified that a crack may occur in the honeycomb body due to this thermal stress and the honeycomb body may be displaced from the outer cylinder due to the development of the crack.
【０００９】そこで熱応力を緩和して構造信頼性を確保
することが望まれ、ハニカム体の一端部のみを外筒と片
持ち状に接合した構造、応力緩和リングをハニカム体と
外筒の間に介在させた構造、平板と波板の接合強度を内
部と外周部で異ならせた構造など、種々の提案がなされ
ている。Therefore, it is desired to relax the thermal stress and ensure the structural reliability. A structure in which only one end of the honeycomb body is cantilevered with the outer cylinder, and a stress relaxation ring is provided between the honeycomb body and the outer cylinder. Various proposals have been made, such as a structure in which the flat plate and the corrugated plate are interposed, and a structure in which the bonding strength between the flat plate and the corrugated plate is different between the inside and the outside.
【００１０】本発明は金属製のハニカム体と外筒とから
なるメタル担体の前記のごとき問題点に鑑みてなされた
ものであって、ハニカム体を構成する平板と波板との接
合強度を向上させることで、耐久性の優れたハニカム体
およびその製造方法を提供することを目的とする。The present invention has been made in view of the above problems of a metal carrier composed of a metal honeycomb body and an outer cylinder, and improves the bonding strength between a flat plate and a corrugated plate forming the honeycomb body. By doing so, it is an object to provide a honeycomb body having excellent durability and a manufacturing method thereof.
【００１１】[0011]
【課題を解決するための手段】上記課題を解決する本発
明のハニカム体は、金属製の平板と金属製の波板とが交
互に複数積層して、又は巻回してなるハニカム体におい
て、該平板と該波板との接合部にはＳｉ又はＮｂが拡散
状態で含まれていることを特徴とする。また上記課題を
解決する本発明のハニカム体の製造方法は、金属製の平
板と金属製の波板とが交互に複数積層して、又は巻回し
てハニカム体を形成する工程と、該ハニカム体をＳｉ蒸
気又はＮｂ蒸気が存在する雰囲気中で加熱して該平板と
該波板との当接部を接合する工程と、を行うことを特徴
とする。Means for Solving the Problems The honeycomb body of the present invention for solving the above-mentioned problems is a honeycomb body formed by alternately laminating or winding a plurality of flat metal plates and corrugated metal plates. The joining portion between the flat plate and the corrugated plate is characterized by containing Si or Nb in a diffused state. Further, a method for manufacturing a honeycomb body of the present invention which solves the above-mentioned problems, a step of forming a honeycomb body by laminating or winding a plurality of metal flat plates and metal corrugated plates alternately, and the honeycomb body Is heated in an atmosphere in which Si vapor or Nb vapor is present to bond the abutting portion of the flat plate and the corrugated plate to each other.
【００１２】本発明者等は、ハニカム体の脆性破壊を調
査したところ、平板と波板の接合部での破壊が顕著であ
ることに着目し、鋭意研究の結果、用いられているＮｉ
ロウ材がハニカム体の脆性破壊を支配していることを見
出した。また、従来行われている拡散接合法によって
も、接合強度がさほど高くならないことも明らかになっ
た。そしてさらに鋭意研究の結果、接合部にＳｉ又はＮ
ｂを拡散させることで接合強度が格段に向上することを
発見し、本発明を完成したものである。The inventors of the present invention investigated brittle fracture of the honeycomb body, and noticed that the fracture was remarkable at the joint between the flat plate and the corrugated sheet.
It was found that the brazing material controls brittle fracture of the honeycomb body. It was also clarified that the bonding strength was not so high even by the conventional diffusion bonding method. As a result of further earnest research, Si or N
The present invention was completed by discovering that the bonding strength is remarkably improved by diffusing b.
【００１３】すなわち、本発明のハニカム体では、接合
部にはＳｉ又はＮｂが拡散状態で含まれている。これに
より理由は不明であるが、従来の拡散接合などにより接
合されたハニカム体に比べて接合強度が格段に向上す
る。That is, in the honeycomb body of the present invention, the joint portion contains Si or Nb in a diffused state. For this reason, although the reason is unknown, the bonding strength is remarkably improved as compared with the conventional honeycomb body bonded by diffusion bonding or the like.
【００１４】また、本発明のハニカム体の製造方法で
は、Ｓｉ蒸気又はＮｂ蒸気が存在する雰囲気中で加熱す
ることで平板と波板との当接部が接合される。これによ
り接合部にはＳｉ又はＮｂが拡散状態で含まれ、その結
果きわめて高い接合強度が得られる。Further, in the method for manufacturing a honeycomb body of the present invention, the contact portion between the flat plate and the corrugated plate is joined by heating in an atmosphere in which Si vapor or Nb vapor is present. As a result, the joint contains Si or Nb in a diffused state, and as a result, extremely high joint strength is obtained.
【００１５】雰囲気中にＳｉ蒸気を存在させるには、Ｆ
ｅ−ＳｉなどのＳｉを含む合金あるいは有機Ｓｉ化合物
などのＳｉ源の存在下で加熱する方法を採用できる。ま
た、Ｎｂ蒸気を存在させるには、Ｆｅ−ＮｂなどのＮｂ
を含む合金などのＮｂ源の存在下で加熱する方法を採用
できる。このようなＳｉ源又はＮｂ源は、接合前のハニ
カム体とは別に供給しても良いし、平板と波板の間にイ
ンサート材として介在させた状態で供給することも好ま
しい。To allow Si vapor to exist in the atmosphere, F
A method of heating in the presence of a Si-containing alloy such as e-Si or a Si source such as an organic Si compound can be adopted. Further, in order to allow Nb vapor to exist, Nb such as Fe-Nb is used.
A method of heating in the presence of a Nb source such as an alloy containing Ni can be adopted. Such Si source or Nb source may be supplied separately from the honeycomb body before bonding, or may be preferably supplied in a state of being interposed as an insert material between the flat plate and the corrugated plate.
【００１６】なお、平板および波板の材質としては、従
来用いられているＦｅ−Ｃｒ−Ａｌ系フェライトステン
レスなどを用いることができる。また、Ｓｉ蒸気やＮｂ
蒸気は、ロウ付け接合時および拡散接合時のいずれにも
存在させることができる。また、Ｆｅ−Ｓｉ合金自体を
ロウ材として用いることも可能である。As the material of the flat plate and the corrugated plate, conventionally used Fe-Cr-Al ferrite stainless steel or the like can be used. In addition, Si vapor and Nb
The steam can be present both during brazing and diffusion bonding. It is also possible to use the Fe-Si alloy itself as a brazing material.
【００１７】[0017]
【発明の実施の形態】本発明の実施例を比較例と対比し
て説明し、本発明の効果を明らかにする。 （実施例１）図３に示すように、板厚０．０５ｍｍに圧
延されたＦｅ−Ｃｒ−Ａｌ系フェライトステンレス（２
０Ｃｒ−５Ａｌ）からなる平板１１と、この平板をコル
ゲート加工することにより形成された波板１２とを用意
し、重ねてロール状に巻回して円柱状のハニカム体１を
形成した。ハニカム体１は径１００ｍｍ、長さ１１５ｍ
ｍであり、ハニカムセル数は４００個／ｉｎｃｈ2 であ
った。BEST MODE FOR CARRYING OUT THE INVENTION The effects of the present invention will be clarified by explaining the examples of the present invention in comparison with comparative examples. (Example 1) As shown in FIG. 3, Fe-Cr-Al-based ferritic stainless steel (2
A flat plate 11 made of 0Cr-5Al) and a corrugated plate 12 formed by corrugating the flat plate were prepared and wound in a roll to form a cylindrical honeycomb body 1. The honeycomb body 1 has a diameter of 100 mm and a length of 115 m.
m, and the number of honeycomb cells was 400 / inch 2 .
【００１８】ハニカム体１をブチルセロソルブ中で洗浄
後、図２に示すようにフェライト系ステンレス製の外筒
２に一端が多少嵌入する程度に圧入し、メタル担体６を
製作した。このメタル担体６を、表面にＦｅ−Ｓｉ合金
粉末３（Ｓｉ含有量７５重量％、平均粒径５００μｍ）
が８５ｇ散布されたアルミナ板４の上に、ハニカム体１
の一端面が下側となるように軸方向を鉛直にし載置し
た。次いで、メタル担体６の上側となった他端面をアル
ミナ製の蓋５で覆い、真空中にて１２５０℃で６０分間
加熱することにより、平板１１と波板１２の当接部１３
を拡散接合した。After the honeycomb body 1 was washed in butyl cellosolve, it was pressed into the outer cylinder 2 made of ferritic stainless steel as shown in FIG. The surface of this metal carrier 6 was Fe-Si alloy powder 3 (Si content: 75% by weight, average particle size: 500 μm).
On the alumina plate 4 on which 85 g of
It was placed with its axial direction vertical so that one end face of it was on the lower side. Next, the other end surface which is the upper side of the metal carrier 6 is covered with a lid 5 made of alumina, and heated at 1250 ° C. for 60 minutes in a vacuum, so that the contact portion 13 between the flat plate 11 and the corrugated plate 12 is
Was diffusion bonded.
【００１９】得られたメタル担体６のハニカム体１の図
４に示す平板１１と波板１２の当接部１３を顕微鏡で観
察し、付着の有無と接合状態を調査したところ、図５に
示すように、平板１１と波板１２とは一部溶融状態で接
合されていることが判明した。また、ＥＰＭＡにより接
合部１３へのＳｉの侵入量を測定したところ、図６に示
すような結果を得た。図６から明らかなように、接合部
１３には約０．２％程度のＳｉが侵入し、拡散状態で含
有されていることが確認された。The contact portion 13 between the flat plate 11 and the corrugated plate 12 shown in FIG. 4 of the honeycomb body 1 of the obtained metal carrier 6 was observed with a microscope to examine the presence or absence of adhesion and the bonding state. As described above, it was found that the flat plate 11 and the corrugated plate 12 were partially joined in a molten state. Further, when the amount of Si penetrating into the joint 13 was measured by EPMA, the results shown in FIG. 6 were obtained. As is clear from FIG. 6, it was confirmed that about 0.2% of Si penetrated into the joint portion 13 and was contained in a diffused state.
【００２０】次いで、図８に示すようにハニカム体１を
１０ｍｍ厚さに切断し、円柱形の圧子７（外径１８ｍ
ｍ）とリング状の受け環８（内径２２ｍｍ）の間に配置
し、圧子７に荷重Ｗを加えて接合部に亀裂が生じたとき
の荷重を抜け荷重として測定した。なお、比較例とし
て、実施例１と同様のメタル担体６を、真空中にて１２
５０℃で６０分間加熱することにより、平板１１と波板
１２の当接部１３を拡散接合した後、実施例１と同様に
ハニカム体１を１０ｍｍ厚さに切断し、円柱形の圧子７
（外径１８ｍｍ）とリング状の受け環８（内径２２ｍ
ｍ）の間に配置し、圧子７に荷重Ｗを加えて前記と同様
に抜け荷重を測定した。Next, as shown in FIG. 8, the honeycomb body 1 is cut to a thickness of 10 mm, and a cylindrical indenter 7 (outer diameter 18 m) is cut.
m) and the ring-shaped receiving ring 8 (inner diameter 22 mm), and a load W was applied to the indenter 7 to measure a load when a crack was generated at the joint as a falling load. As a comparative example, a metal carrier 6 similar to that of Example 1 was used in vacuum 12
After heating the flat plate 11 and the contact portion 13 of the corrugated plate 12 by diffusion bonding by heating at 50 ° C. for 60 minutes, the honeycomb body 1 is cut into a thickness of 10 mm in the same manner as in Example 1, and the cylindrical indenter 7 is cut.
(Outer diameter 18 mm) and ring-shaped receiving ring 8 (inner diameter 22 m
m), the load W was applied to the indenter 7, and the pull-out load was measured in the same manner as described above.
【００２１】得られたハニカム体１の抜き荷重は図１に
まとめて示した。図１から明らかなように、比較例の抜
き荷重が５０ｋｇｆであるのに対し、実施例１の抜き荷
重は３００ｋｇｆを越えており、本発明のハニカム体は
接合強度が著しく高く、耐久性に優れていることが判明
した。The pulling load of the obtained honeycomb body 1 is shown collectively in FIG. As is clear from FIG. 1, the pulling load of the comparative example is 50 kgf, whereas the pulling load of Example 1 exceeds 300 kgf, and the honeycomb body of the present invention has remarkably high bonding strength and excellent durability. It turned out.
【００２２】（実施例２）実施例１と同様のメタル担体
６を製作しこのメタル担体６を、図２に示すように、表
面にＦｅ−Ｎｂ合金粉末３（Ｎｂ含有量６６．６重量
％、平均粒径５００μｍ）が１６０ｇ散布されたアルミ
ナ板４の上に、ハニカム体１の一端面が下側となるよう
に軸方向を鉛直にし載置した。次いで、実施例１と同様
にメタル担体６の上側となった他端面をアルミナ製の蓋
５で覆い、真空中にて１２５０℃で６０分間加熱するこ
とにより、平板１１と波板１２の当接部１３を拡散接合
した。(Embodiment 2) A metal carrier 6 similar to that of Embodiment 1 was manufactured, and the surface of this metal carrier 6 was Fe-Nb alloy powder 3 (Nb content 66.6% by weight), as shown in FIG. The average particle diameter was 500 μm), and the honeycomb body 1 was placed on the alumina plate 4 with 160 g of the average particle diameter dispersed, with the axial direction vertical so that one end surface of the honeycomb body 1 was on the lower side. Then, similarly to Example 1, the other end surface, which is the upper side of the metal carrier 6, is covered with the lid 5 made of alumina, and heated at 1250 ° C. for 60 minutes in vacuum to bring the flat plate 11 and the corrugated plate 12 into contact with each other. The portion 13 was diffusion-bonded.
【００２３】ＥＰＭＡにより接合部１３へのＮｂの侵入
量を測定したところ、図７に示すような結果を得た。図
７から明らかなように、接合部１３には約０．０５％程
度のＮｂが侵入し、拡散状態で含有されていることが確
認された。When the amount of Nb penetrating into the joint 13 was measured by EPMA, the results shown in FIG. 7 were obtained. As is clear from FIG. 7, it was confirmed that about 0.05% of Nb entered the joint portion 13 and was contained in a diffused state.
【００２４】次いで実施例１と同様に図８に示すような
ハニカム体１を１０ｍｍ厚さに切断し、円柱形の圧子７
（外径１８ｍｍ）とリング状の受け環８（内径２２ｍ
ｍ）の間に配置し、圧子７に荷重Ｗを加えて接合部に亀
裂が生じたときの荷重を抜け荷重として測定した。得ら
れた結果は図１に併せて示した。図１から明らかなよう
に、比較例の抜き荷重が５０ｋｇｆであるのに対し、実
施例２の抜き荷重は２４０ｋｇｆであり、本発明のハニ
カム体は接合強度が著しく高く、耐久性に優れているこ
とが判明した。Next, as in Example 1, the honeycomb body 1 as shown in FIG. 8 was cut into a thickness of 10 mm, and a cylindrical indenter 7 was cut.
(Outer diameter 18 mm) and ring-shaped receiving ring 8 (inner diameter 22 m
m), the load W was applied to the indenter 7 and the load when cracks were generated in the joint was measured as the drop load. The obtained results are also shown in FIG. As is clear from FIG. 1, the pulling load of the comparative example is 50 kgf, whereas the pulling load of Example 2 is 240 kgf, and the honeycomb body of the present invention has remarkably high bonding strength and excellent durability. It has been found.
【００２５】（実施例３）Ｆｅ−Ｓｉ合金粉末（Ｓｉ含
有量７５重量％）５０重量部と、水溶性樹脂３０重量部
と、水１００重量部とからなるスラリーを用意し、この
スラリー中に実施例１と同様の方法で製造したハニカム
体１を浸漬して引き上げた後、余分なスラリーを吹き払
い、２００℃で乾燥してハニカム体表面にＦｅ−Ｓｉ合
金粉末層を形成した。Ｆｅ−Ｓｉ合金粉末層の付着重量
は、ハニカム体体積１Ｌ当たり２０ｇであった。(Example 3) A slurry comprising 50 parts by weight of Fe-Si alloy powder (Si content 75% by weight), 30 parts by weight of a water-soluble resin, and 100 parts by weight of water was prepared. The honeycomb body 1 manufactured by the same method as in Example 1 was immersed and pulled up, and then excess slurry was blown off and dried at 200 ° C. to form a Fe—Si alloy powder layer on the surface of the honeycomb body. The adhesion weight of the Fe—Si alloy powder layer was 20 g per 1 L of the honeycomb body volume.
【００２６】得られたＦｅ−Ｓｉ合金粉末層を持つハニ
カム体は、実施例１と同様に外筒に組み付けられ、真空
中にて１２５０℃×６０分熱処理が行われ、平板と波板
の当接部が接合された。次いで実施例１と同様に図８に
示すようなハニカム体１を１０ｍｍ厚さに切断し、実施
例１と同様に抜き荷重を測定し、抜き荷重は図１にまと
めて示した。図１から明らかなように、比較例の抜き荷
重が５０ｋｇｆであるのに対し、実施例３の抜き荷重は
２６０ｋｇｆであり、本発明のハニカム体は接合強度が
著しく高く、耐久性に優れていることが判明し、本発明
の効果が確認された。The obtained honeycomb body having the Fe--Si alloy powder layer was assembled to the outer cylinder in the same manner as in Example 1, heat-treated at 1250 ° C. for 60 minutes in vacuum, and the flat plate and the corrugated plate were contacted with each other. The joints were joined. Next, as in Example 1, the honeycomb body 1 as shown in FIG. 8 was cut into a thickness of 10 mm, and the pulling load was measured in the same manner as in Example 1, and the pulling load is collectively shown in FIG. As is apparent from FIG. 1, the pulling load of the comparative example is 50 kgf, whereas the pulling load of Example 3 is 260 kgf, and the honeycomb body of the present invention has remarkably high bonding strength and excellent durability. It was found that the effect of the present invention was confirmed.
【００２７】（実施例４）Ｆｅ−Ｓｉ合金粉末（Ｓｉ含
有量７５重量％）５０重量部と、シリコーン樹脂１００
重量部とからなる液状物を調製し、この液状物中に実施
例１と同様の方法で製造したハニカム体１を浸漬して引
き上げた後、余分なスラリーを吹き払い、ハニカム体表
面にＦｅ−Ｓｉ合金粉末層をを含むシリコーン樹脂層を
形成した。Ｆｅ−Ｓｉ合金粉末層の付着重量は、ハニカ
ム体体積１Ｌ当たり２０ｇであった。Example 4 50 parts by weight of Fe-Si alloy powder (Si content 75% by weight) and 100 parts by weight of silicone resin.
And a honeycomb body 1 manufactured by the same method as in Example 1 was immersed in the liquid material and pulled up, and then excess slurry was blown off to remove Fe-on the surface of the honeycomb body. A silicone resin layer including a Si alloy powder layer was formed. The adhesion weight of the Fe—Si alloy powder layer was 20 g per 1 L of the honeycomb body volume.
【００２８】得られたＦｅ−Ｓｉ合金粉末層を持つハニ
カム体は、実施例１と同様に外筒が嵌着された後、Ｈ2
雰囲気中で６００℃×６０分還元処理された。こりによ
りシリコーン樹脂が分解された。そして更に真空中で１
２５０℃×６０分熱処理が行われ、平板と波板の当接部
が接合されメタル担体が完成した。The honeycomb body having the Fe--Si alloy powder layer thus obtained was treated with H 2 after the outer cylinder was fitted in the same manner as in Example 1.
It was reduced at 600 ° C. for 60 minutes in the atmosphere. The dust decomposed the silicone resin. And further in vacuum 1
A heat treatment was carried out at 250 ° C. for 60 minutes, and the abutting portions of the flat plate and the corrugated plate were joined to complete the metal carrier.
【００２９】次いで実施例１と同様に図８に示すような
ハニカム体１を１０ｍｍ厚さに切断し、実施例１と同様
に抜き荷重を測定し、抜き荷重は図１にまとめて示し
た。図１から明らかなように、比較例の抜き荷重が５０
ｋｇｆであるのに対し、実施例４の抜き荷重は２６０ｋ
ｇｆであり、本発明のハニカム体は接合強度が著しく高
く、耐久性に優れていることが判明し、本発明の効果が
確認された。Then, as in Example 1, the honeycomb body 1 as shown in FIG. 8 was cut into a thickness of 10 mm, and the pulling load was measured in the same manner as in Example 1, and the pulling load is shown collectively in FIG. As is clear from FIG. 1, the pulling load of the comparative example is 50.
In contrast to kgf, the pulling load of Example 4 is 260 k
It was gf, and it was found that the honeycomb body of the present invention has a remarkably high bonding strength and excellent durability, and the effect of the present invention was confirmed.
【００３０】[0030]
【発明の効果】本発明のハニカム体は以上説明したよう
に、金属製の平板と金属製の波板とが交互に複数積層し
て、又は巻回してなるハニカム体において、該平板と該
波板との接合部にはＳｉ又はＮｂが拡散状態で含まれて
いることを特徴とするものであり、その製造方法は金属
製の平板と金属製の波板とが交互に複数積層して、又は
巻回してハニカム体を形成する工程と、該ハニカム体を
Ｓｉ蒸気が存在する雰囲気中で加熱して該平板と該波板
との当接部を接合する工程と、を行うことを特徴とし、
Ｓｉ蒸気又はＮｂ蒸気が存在する雰囲気中で加熱するこ
とで平板と波板との当接部が接合される。これにより接
合部にはＳｉ又はＮｂが拡散状態で含まれ、その結果き
わめて高い接合強度が得られる。また、従来のロウ材を
用いずとも平板と波板を接合することができ、ハニカム
体を安価に製造できる上に、ロウ材を使用していないの
でＮｉによる脆性破壊が防止され耐久性が向上する。As described above, the honeycomb body of the present invention is a honeycomb body in which a plurality of flat metal plates and corrugated metal plates are alternately laminated or wound, and The joint with the plate is characterized in that Si or Nb is contained in a diffused state, and the manufacturing method is that a plurality of metal flat plates and metal corrugated plates are alternately laminated, Alternatively, a step of forming a honeycomb body by winding and a step of heating the honeycomb body in an atmosphere in which Si vapor is present to bond the contact portion between the flat plate and the corrugated plate are performed. ,
By heating in an atmosphere in which Si vapor or Nb vapor is present, the contact portion between the flat plate and the corrugated plate is joined. As a result, the joint contains Si or Nb in a diffused state, and as a result, extremely high joint strength is obtained. Further, a flat plate and a corrugated plate can be joined without using a conventional brazing material, a honeycomb body can be manufactured at low cost, and since no brazing material is used, brittle fracture due to Ni is prevented and durability is improved. To do.
【図１】本発明の実施例と比較例のハニカム体の抜き荷
重を示すヒストグラム図である。FIG. 1 is a histogram diagram showing a drawing load of honeycomb bodies of an example of the present invention and a comparative example.
【図２】本発明方法の一実施例を説明する断面図であ
る。FIG. 2 is a cross-sectional view illustrating an embodiment of the method of the present invention.
【図３】平板と波板の巻回状態を示す斜視図である。FIG. 3 is a perspective view showing a wound state of a flat plate and a corrugated plate.
【図４】Ｓｉを拡散させた本発明の実施例のハニカム体
の平板と波板の接合部の部分拡大図である。FIG. 4 is a partially enlarged view of a joint portion between a flat plate and a corrugated plate of a honeycomb body of an embodiment of the present invention in which Si is diffused.
【図５】Ｓｉを拡散させた本発明の実施例のハニカム体
の平板と波板の接合部の顕微鏡観察結果のスケッチ図で
ある。FIG. 5 is a sketch diagram of a microscope observation result of a joint portion between a flat plate and a corrugated plate of a honeycomb body of an embodiment of the present invention in which Si is diffused.
【図６】Ｓｉを拡散させた本発明の実施例のハニカム体
における平板と波板の接合部のＥＰＭＡチャート図であ
る。[Fig. 6] Fig. 6 is an EPMA chart diagram of a joint portion between a flat plate and a corrugated plate in a honeycomb body of an example of the present invention in which Si is diffused.
【図７】Ｎｂを拡散させた本発明の実施例のハニカム体
における平板と波板の接合部のＥＰＭＡチャート図であ
る。[Fig. 7] Fig. 7 is an EPMA chart diagram of a joint portion between a flat plate and a corrugated plate in a honeycomb body of an example of the present invention in which Nb is diffused.
【図８】本発明の実施例における抜け荷重の測定方法を
説明する断面図である。FIG. 8 is a cross-sectional view illustrating a method of measuring a falling load according to the embodiment of the present invention.
１・・・・・ハニカム体 ２・・・・・外筒 ３・・・・・Ｆｅ−Ｓｉ又はＦｅ−Ｎｂ合金粉末 ４・・・・・アルミナ板 ５・・・・・蓋 ６・・・・・メタル担体 ７・・・・・圧子 ８・・・・・受け環 １１・・・・平板 １２・・・・波板 １３・・・・接合部 1 ... Honeycomb body 2 ... Outer cylinder 3 ... Fe-Si or Fe-Nb alloy powder 4 ... Alumina plate 5 ... Lid 6 ... ..Metal carrier 7 ... Indenter 8 ... Receiving ring 11 ... Flat plate 12 ... Corrugated plate 13 ...
Claims (4)
複数積層して、又は巻回してなるハニカム体において、
該平板と該波板との接合部にはＳｉが拡散状態で含まれ
ていることを特徴とするハニカム体。1. A honeycomb body formed by alternately laminating or winding a plurality of metal flat plates and metal corrugated plates,
A honeycomb body, characterized in that Si is contained in a diffused state at a joint between the flat plate and the corrugated plate.
複数積層して、又は巻回してハニカム体を形成する工程
と、該ハニカム体をＳｉ蒸気が存在する雰囲気中で加熱
して該平板と該波板との当接部を接合する工程と、を行
うことを特徴とするハニカム体の製造方法。2. A step of alternately laminating or winding a plurality of flat metal plates and corrugated metal plates to form a honeycomb body, and heating the honeycomb body in an atmosphere containing Si vapor. And a step of joining the contact portions of the flat plate and the corrugated plate with each other.
複数積層して、又は巻回してなるハニカム体において、
該平板と該波板との接合部にはＮｂが拡散状態で含まれ
ていることを特徴とするハニカム体。3. A honeycomb body in which a plurality of flat metal plates and corrugated metal plates are alternately laminated or wound,
A honeycomb body, wherein Nb is contained in a diffused state in a joint portion between the flat plate and the corrugated plate.
複数積層して、又は巻回してハニカム体を形成する工程
と、該ハニカム体をＮｂ蒸気が存在する雰囲気中で加熱
して該平板と該波板との当接部を接合する工程と、を行
うことを特徴とするハニカム体の製造方法。4. A step of alternately laminating or winding a plurality of metal flat plates and metal corrugated plates to form a honeycomb body, and heating the honeycomb body in an atmosphere containing Nb vapor. And a step of joining the contact portions of the flat plate and the corrugated plate with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7239894A JPH0975753A (en) | 1995-09-19 | 1995-09-19 | Honeycomb body and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7239894A JPH0975753A (en) | 1995-09-19 | 1995-09-19 | Honeycomb body and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0975753A true JPH0975753A (en) | 1997-03-25 |
Family
ID=17051450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7239894A Pending JPH0975753A (en) | 1995-09-19 | 1995-09-19 | Honeycomb body and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0975753A (en) |
-
1995
- 1995-09-19 JP JP7239894A patent/JPH0975753A/en active Pending
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