JPH01142073A - Production of ferritic stainless steel coated with oxide whisker - Google Patents
Production of ferritic stainless steel coated with oxide whiskerInfo
- Publication number
- JPH01142073A JPH01142073A JP62299711A JP29971187A JPH01142073A JP H01142073 A JPH01142073 A JP H01142073A JP 62299711 A JP62299711 A JP 62299711A JP 29971187 A JP29971187 A JP 29971187A JP H01142073 A JPH01142073 A JP H01142073A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- ferritic stainless
- steel
- oxide whiskers
- plating
- 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.)
- Granted
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000007747 plating Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 241000264877 Hippospongia communis Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 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 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は酸化物ウィスカーで被覆されたフェライトステ
ンレス鋼の製造方法に関し、特に自動車排ガスコンバー
タに使用される金属製触媒保持材に適した酸化物ウィス
カーで被覆されたフェライトステンレス鋼の製造方法に
関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing ferritic stainless steel coated with oxide whiskers, and in particular to an oxide whisker coating suitable for metal catalyst holding materials used in automobile exhaust gas converters. The present invention relates to a method for producing ferritic stainless steel coated with whiskers.
（従来の技術）
従来より自動車排ガスコンバータとしてコーディエライ
ト（２Ｍｇ０１２Ａｌ２０３．５Ｓｉ０２）製ハニカム
が使用されこれに触媒担体（γ−Ａｌ２０３）や貴金属
触媒を担持させていた。しかしながら、このコーディエ
ライト製ハニカムを耐酸化性ステンレス鋼で製造すると
触媒担体や貴金属触媒がコンバータの急激な温度変化や
震動によって簡単に剥離する欠点があった。この点を解
決するためにＡｌ含有ステンレス鋼に熱処理を行なって
、その表面にアルミナウィスカーを成長させ耐剥離性を
向上させていた。すなわち、酸化物ウィスカーで被覆さ
れたフェライトステンレス鋼箔は、触媒含浸したアルミ
ナ担体との密着性が高く、自動車排ガス触媒コンバータ
用として価値が高いのである。そして酸化物ウィスカー
被覆されたフェライトステンレス鋼の製造方法について
特開昭５６−９６７２６．５７−７１８９８に記載され
ている。しかして、これら公報に記載されているように
使用されるＡｌ含有ステンレス鋼としてはＣｒ：１５〜
２５％、Ａｌ：３〜６％、任意的にＹ：０．３〜１．０
％を含む高Ａｌ含有ステンレス鋼であるが、実際には鋼
中のＡｌ量が５ぶ以上必要であり、又酸化物ウィスカー
のアスペクト比をより大きくしたい場合にはさらに多く
のＡＩ２が必要である。しかしながらこのような高Ａｌ
含有フェライトステンレス鋼は靭性に乏しく大量生産す
ることは困難であった。なお、特開昭６２−１４９８６
２号公報にはＡｌ含有ステンレス鋼材にブラスト処理を
した後、高温で酸化させて該鋼材表面に表面ＡΩウィス
カーを形成させる方法が記載されているが、本発明では
ブラスト処理を行なわず、メツキ処理を行なう点でこの
方法とは異なる。(Prior Art) Honeycombs made of cordierite (2Mg012Al203.5Si02) have conventionally been used as automobile exhaust gas converters, and have catalyst carriers (γ-Al203) and precious metal catalysts supported thereon. However, when this cordierite honeycomb is made of oxidation-resistant stainless steel, there is a drawback that the catalyst carrier and precious metal catalyst easily peel off due to sudden temperature changes or vibrations of the converter. To solve this problem, Al-containing stainless steel was heat treated to grow alumina whiskers on its surface to improve its peeling resistance. In other words, the ferritic stainless steel foil coated with oxide whiskers has high adhesion to the catalyst-impregnated alumina carrier, making it highly valuable for automotive exhaust gas catalytic converters. A method for producing ferritic stainless steel coated with oxide whiskers is described in JP-A-56-96726.57-71898. However, as described in these publications, the Al-containing stainless steel used is Cr: 15~
25%, Al: 3-6%, optionally Y: 0.3-1.0
%, but in reality, the amount of Al in the steel needs to be 5 or more, and if you want to increase the aspect ratio of oxide whiskers, even more AI2 is needed. . However, such high Al
Ferrite-containing stainless steel has poor toughness and is difficult to mass produce. In addition, Japanese Patent Application Laid-Open No. 62-14986
Publication No. 2 describes a method of blasting an Al-containing stainless steel material and then oxidizing it at high temperature to form surface AΩ whiskers on the surface of the steel material. However, in the present invention, the blasting treatment is not performed and the plating treatment is performed. This method differs from this method in that it performs the following.
（解決しようとする問題点）
本発明者らは上記の欠点を解決すべく種々検討した結果
、低アルミ含有フェライトステンレス鋼の表面にＡｌメ
ツキを施し熱拡散処理を行なって表面層のみ高アルミフ
ェライト相に改良し、これにウィスカー生成処理を行な
うことによって上記の欠点を改良しうろことを見出して
本発明を完成するに至ったもので、本発明の目的は低Ａ
ｌフェライトステンレス鋼を素材として自動車排ガスコ
ンバータに使用される触媒保持材に適した酸化物ウィス
カーで被覆されたフェライトステンレス鋼の製油方法を
提供するにある。(Problems to be Solved) As a result of various studies in order to solve the above-mentioned drawbacks, the present inventors applied Al plating to the surface of low-aluminum-containing ferritic stainless steel and performed thermal diffusion treatment to make only the surface layer high-aluminum ferrite. The present invention was completed by discovering that scales can be improved by improving the phase and applying whisker generation treatment to improve the above-mentioned drawbacks.
(1) To provide a method for producing oil of ferritic stainless steel coated with oxide whiskers, which is made from ferritic stainless steel and is suitable for a catalyst holding material used in automobile exhaust gas converters.
（問題点を解決するための手段）
すなわち、本発明は、フェライトステンレス鋼表面にＡ
ｌメツキした後、真空中もしくは非酸化性ガスの雰囲気
中で加熱してＡｌをフェライト鋼中へ拡散させて表面を
高１１含有フエライト相にした後、空気中で加熱して酸
化物ウィスカーを生成させ、該酸化物ウィスカーで被覆
されたフェライトステンレス鋼の製造方法である。しか
して。(Means for Solving the Problems) That is, the present invention provides A on the surface of ferritic stainless steel.
After plating, it is heated in vacuum or in a non-oxidizing gas atmosphere to diffuse Al into the ferritic steel, making the surface a high-11-containing ferrite phase, and then heated in air to generate oxide whiskers. This is a method for producing ferritic stainless steel coated with oxide whiskers. However.
本発明は通常使用されているＡｌ含有フェライトステン
レス鋼に更にＡｆｌメツキを施して高１１含有フエライ
ト相としてもよいが、特にＬＡ含有３％以下の低Ａβフ
ェライトステンレス鋼を使用する場合にその効果は著る
しく大きく、Ｃｒ：１０〜３０％、Ａｌ：３％以下及び
任意的にＹ 、 Ｌａ 、 Ｃｅ等のＲＥＭを０．１−
１．０％含有するものを使用することが好ましい＝Ａｌ
メツキ方法としては、溶融法、電気メツキ法、冷間クラ
ッド法でもよいが、特・に特開昭６１−１０７７６４号
で提案した極薄帯に常温大気中で連続メツキ可能なメカ
ニカルメッキ法がより好ましい。In the present invention, a commonly used Al-containing ferritic stainless steel may be further Afl-plated to form a high-11-containing ferrite phase, but the effect is particularly low when using a low Aβ ferritic stainless steel with an LA content of 3% or less. Significantly large, Cr: 10-30%, Al: 3% or less, and optionally REM such as Y, La, Ce, etc. 0.1-
It is preferable to use one containing 1.0% = Al
The plating method may be a melting method, an electroplating method, or a cold cladding method, but the mechanical plating method proposed in JP-A No. 61-107764, which allows continuous plating of ultra-thin strips in the air at room temperature, is more preferable. preferable.
すなわち、ワイヤ、リボン又はテープのいずれかよりな
るｌ又はＡｌ合金を多数植えつけたブラシをステンレス
鋼表面に接触せしめ前記ブラシとステンレス鋼とを相対
運動させてステンレス鋼表面を活性化して、該ステンレ
ス鋼表面にＡｌ又はＡΩ合金のメツキ層を形成する方法
である。That is, a brush made of wire, ribbon, or tape in which a large number of L or Al alloys are planted is brought into contact with the stainless steel surface, and the brush and the stainless steel are moved relative to each other to activate the stainless steel surface. This method forms a plating layer of Al or AΩ alloy on the steel surface.
この方法を用いて、フェライトステンレス鋼表面にＡ１
１ｌメツキを施したものを直接空気中で加熱して酸化さ
せても酸化物ウィスカーは生成しない。Using this method, A1
Oxide whiskers are not generated even if the 1L plated material is oxidized by heating directly in the air.
酸化物ウィスカーを生成させるためには、空気中で加熱
する前にＡｌを鋼中へ拡散させなければならない。拡散
するための熱処理（以下、拡散熱処理という）は、７０
０℃〜１２００℃の温度範囲内で実施し、表面Ａｌ濃度
が少なくとも５％以上になるようにその保持時間は決め
られる。To form oxide whiskers, Al must be diffused into the steel before heating in air. Heat treatment for diffusion (hereinafter referred to as diffusion heat treatment)
It is carried out within a temperature range of 0° C. to 1200° C., and the holding time is determined so that the surface Al concentration is at least 5% or more.
拡散熱処理の雰囲気としては、真空中もしくは非酸化性
ガス雰囲気中であって、なるべく酸素分圧の低いほうが
よい。真空では、Ｉ Ｘ １０−’Ｔｏｒｒ以下、Ｈ２
では露点−４０℃以下で十分である。The atmosphere for the diffusion heat treatment is preferably a vacuum or a non-oxidizing gas atmosphere, with the oxygen partial pressure as low as possible. In vacuum, I x 10-'Torr or less, H2
In this case, a dew point of -40°C or lower is sufficient.
拡散熱処理後の空気中における加熱で酸化物ウィスカー
を生成させるわけであるが、拡散熱処理時にステンレス
鋼表面に薄いＡｌ２０３皮膜が形成されている場合は、
拡散熱処理後直接空気中で８５０℃−９５０℃に加熱す
れば酸化物ウィスカーは生成する。しかしながら、拡散
熱処理時表面に厚いＡｌ２０３皮膜もしくはＣｒ 、
Ｆｅ酸化物が生成されることがあり、このような場合は
、酸でこれらの酸化物を除去し、表面を清浄な金属面に
してから、再度真空中あるいは非酸化性ガス中で加熱し
て薄いＡｌ２０３皮膜を形成させる必要がある。Oxide whiskers are generated by heating in air after diffusion heat treatment, but if a thin Al203 film is formed on the stainless steel surface during diffusion heat treatment,
Oxide whiskers are generated by heating directly in air to 850-950°C after the diffusion heat treatment. However, during diffusion heat treatment, a thick Al203 film or Cr film on the surface,
Fe oxides may be generated, and in such cases, remove these oxides with acid, make the surface a clean metal surface, and then heat again in vacuum or in a non-oxidizing gas. It is necessary to form a thin Al203 film.
この薄いＡｌ２０３皮膜、すなわちウィスカー前駆体を
形成させるには、真空中もしくは非酸化性ガス中であっ
て、低い酸素分圧で７００℃〜１２００℃の温度範囲に
加熱すればよい。時間は数分あれば十分である。酸素分
圧としては真空ではＩ Ｘ １０−’Ｔｏｒｒ以下、■
２では露点−４０°Ｃ以下が好ましい。In order to form this thin Al203 film, that is, the whisker precursor, heating may be performed in a vacuum or in a non-oxidizing gas at a low partial pressure of oxygen to a temperature range of 700°C to 1200°C. A few minutes is sufficient. The oxygen partial pressure is less than I x 10-'Torr in vacuum, ■
2, the dew point is preferably -40°C or lower.
前記薄いＡｌ２０３皮膜、すなわちウィスカー前駆体か
らウィスカー状酸化物を生成させるためには、空気中で
８７０℃〜９３０℃に加熱する必要がある。この温度範
囲以外では高アスペクト比のウィスカーは生成しない。In order to generate a whisker-like oxide from the thin Al203 film, that is, a whisker precursor, it is necessary to heat it in air to 870°C to 930°C. High aspect ratio whiskers do not form outside this temperature range.
保持時間は、９００℃で８時間以上、９２５℃で４時間
以上であれば十分である。It is sufficient that the holding time is 8 hours or more at 900°C and 4 hours or more at 925°C.
以上のように本発明は、Ａｌメツキにより大量生産可能
な低Ａｌ含有フェライトステンレス鋼表面近傍のみを高
１１フエライト相に改良して酸化物ウィスカーを生成さ
せる方法でありその経済的効果は大きい。又、本発明に
より前記表面近傍を非常に高いＡｌ、濃度にすることが
可能であり、アスペクト比の大きい酸化物ウィスカーを
生成させることができ、触媒担持に適している。As described above, the present invention is a method for producing oxide whiskers by improving only the vicinity of the surface of low-Al-containing ferritic stainless steel, which can be mass-produced by Al plating, into a high-11 ferrite phase, and its economical effects are significant. Furthermore, according to the present invention, it is possible to have a very high Al concentration near the surface, and it is possible to generate oxide whiskers with a large aspect ratio, which is suitable for supporting a catalyst.
次に実施例をもって本発明をさらに具体的に説明するが
本発明はこれら実施例に限定されるものではない。Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples.
〈実施例１〉
５ＵＳ４３０．０．０５ｔ Ｘ １００ｗ Ｘ Ｌの箔
表面に前記メカニカルメッキ法によりＡＩｌを５μメツ
キしたあと、真空中（２Ｘ１０ ”Ｔｏｒｒ）で９００
℃Ｘ ｌｈｒの拡散熱処理を施し、その後空気中で９０
０℃Ｘ １６ｈｒの酸化をさせた箔の表面走査型電子顕
微鏡写真を第１図に示す。<Example 1> After plating 5 μm of Al on the surface of a 5US430.0.05t x 100w
Diffusion heat treatment at ℃
FIG. 1 shows a surface scanning electron micrograph of the foil oxidized at 0° C. for 16 hours.
表面には密に約５μ長の酸化物ウィスカー（Ａｎｚｏ３
）が生成している。The surface is densely covered with oxide whiskers (Anzo3) with a length of approximately 5μ.
) is generated.
〈実施例２〉
１８％Ｃγ−２，５％Ａｌ鋼、０．０４ｔ Ｘ ７５ｗ
Ｘ Ｌの箔表面にメカニカルメッキ法により両面的３
μのＡｌメツキを施し、その後Ｈ２中（露点−５０°Ｃ
）で１０００°Ｃｘ３０分の拡散熱処理を施した。この
後、弗酸１規定溶液（ＨＦ ＩＮ）、硝酸１規定溶液（
１＋Ｎｏ３１Ｎ）の酸で表面を清浄にした後真空中（２
Ｘ １Ｏ−５Ｔｏｒｒ）で１１００℃×５分の熱処理を
行ない、さらに空気中で９２５℃Ｘ８ｈｒの酸化処理を
実施した。この材料の表面を観察した結果を第２図に示
す。表面には密に約３μ長の酸化物ウィスカーが生成し
ている。<Example 2> 18%Cγ-2.5%Al steel, 0.04t x 75w
Double-sided 3 by mechanical plating method on the foil surface of XL
μ Al plating was applied, and then in H2 (dew point -50°C)
) was subjected to diffusion heat treatment at 1000°C for 30 minutes. After this, add a 1N solution of hydrofluoric acid (HF IN), a 1N solution of nitric acid (
After cleaning the surface with acid (1+No31N), clean it in vacuum (2
A heat treatment was performed at 1100° C. for 5 minutes at a temperature of 100° C. (X 1 O−5 Torr), and an oxidation treatment was further performed at 925° C. for 8 hr in air. Figure 2 shows the results of observing the surface of this material. Oxide whiskers with a length of approximately 3 μm are densely formed on the surface.
（効果）
以上、述べたように本発明は低Ａｌフェライトステンレ
ス鋼を使用するので従来使用されている高Ａｌフェライ
トステンレス鋼の場合に比して大量生産が可能であり、
又表面にＡｌメツキを施しこれを拡散させるために表面
層はきわめて高いＡｌとすることができるのでアスペク
ト比の大きいウィスカーが生成することができ、本発明
法により製造したウィスカー状酸化物を表面に有するフ
ェライトステンレス鋼は、触媒担体保持能力に優れ、自
動車排ガス浄化装置はもとより多くの工業過程で行なわ
れる触媒酸化及び還元反応に用いられる装置用材料とし
て好適である。(Effects) As mentioned above, since the present invention uses low-Al ferrite stainless steel, mass production is possible compared to the conventionally used high-Al ferrite stainless steel.
In addition, since the surface layer is plated with Al and has a very high Al content to diffuse it, whiskers with a large aspect ratio can be generated. Ferrite stainless steel has an excellent ability to hold a catalyst carrier, and is suitable as a material for devices used in catalytic oxidation and reduction reactions performed in many industrial processes, as well as automobile exhaust gas purification devices.
第１図は本発明の実施例１で得られた酸化物ウィスカー
（Ａｌ２０３）の表面走査型電子顕微鏡写真、第２図は
本発明の実施例２で得られた酸化物ライ−８＝
スカーＵｇ２ｏ３）の表面走査型電子顕微鏡写真である
。FIG. 1 is a surface scanning electron micrograph of the oxide whisker (Al203) obtained in Example 1 of the present invention, and FIG. 2 is a surface scanning electron micrograph of the oxide whisker (Al203) obtained in Example 2 of the present invention. ) is a surface scanning electron micrograph.
Claims (1)
真空中もしくは非酸化性ガスの雰囲気中で加熱してＡｌ
をフェライト鋼中へ拡散させて表面を高Ａｌ含有フェラ
イト相にした後、空気中で加熱して酸化物ウィスカーを
生成させ、該酸化物ウィスカーで被覆されたフェライト
ステンレス鋼の製造方法。 ２、フェライトステンレス鋼がＡｌ含有３％以下の低Ａ
ｌフェライトステンレス鋼である特許請求の範囲第１項
記載の酸化物ウィスカーで被覆されたフェライトステン
レス鋼の製造方法。 ３、Ａｌメッキがメカニカルメッキ法によって行なわれ
る特許請求の範囲第１項及び第２項の各項記載の酸化物
ウィスカーで被覆されたフェライトステンレス鋼の製造
方法。[Claims] 1. After Al plating the ferritic stainless steel surface,
Al is heated in vacuum or in a non-oxidizing gas atmosphere.
A method for producing ferritic stainless steel coated with oxide whiskers by diffusing into ferritic steel to make the surface a high Al-containing ferrite phase, and then heating in air to generate oxide whiskers. 2. Low A ferritic stainless steel with Al content of 3% or less
A method for producing a ferritic stainless steel coated with oxide whiskers according to claim 1, which is a ferritic stainless steel. 3. A method for producing ferritic stainless steel coated with oxide whiskers as set forth in claims 1 and 2, wherein the Al plating is performed by a mechanical plating method.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299711A JPH01142073A (en) | 1987-11-30 | 1987-11-30 | Production of ferritic stainless steel coated with oxide whisker |
| DE88119686T DE3883722T2 (en) | 1987-11-30 | 1988-11-25 | Process for the production of ferritic stainless steel with a surface layer consisting of whisker oxide. |
| EP88119686A EP0318864B1 (en) | 1987-11-30 | 1988-11-25 | A production process of ferrite stainless steel covered with oxyde whisker |
| EP92105203A EP0493373A2 (en) | 1987-11-30 | 1988-11-25 | A production process of ferrite stainless steel covered with oxide whisker |
| US07/277,649 US5017544A (en) | 1987-11-30 | 1988-11-29 | Production process of ferrite stainless steel covered with oxide whisker |
| KR1019880015825A KR910009401B1 (en) | 1987-11-30 | 1988-11-30 | Production process of ferrite stainless steel covered with oxide whisker |
| US07/393,946 US5055145A (en) | 1987-11-30 | 1989-08-15 | Production process of ferrite stainless steel covered with oxide whisker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62299711A JPH01142073A (en) | 1987-11-30 | 1987-11-30 | Production of ferritic stainless steel coated with oxide whisker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01142073A true JPH01142073A (en) | 1989-06-02 |
| JPH0240734B2 JPH0240734B2 (en) | 1990-09-13 |
Family
ID=17876040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62299711A Granted JPH01142073A (en) | 1987-11-30 | 1987-11-30 | Production of ferritic stainless steel coated with oxide whisker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219454A (en) * | 1988-07-06 | 1990-01-23 | Nippon Yakin Kogyo Co Ltd | Production of ferritic stainless steel foil coated with oxide whisker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61270363A (en) * | 1985-05-14 | 1986-11-29 | インランド スチ−ル カンパニ− | Diffused alloy steel foil |
| JPS61281861A (en) * | 1985-06-04 | 1986-12-12 | ア−ムコ、インコ−ポレ−テツド | Oxidation resistant ferrous matrix foil and its production |
| JPS6211547A (en) * | 1985-05-28 | 1987-01-20 | ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト | Catalyst carrier made of metal |
| JPS6344942A (en) * | 1986-03-31 | 1988-02-25 | Nippon Steel Corp | Preparation of catalyst substrate for automobile exhaust gas purifying device |
-
1987
- 1987-11-30 JP JP62299711A patent/JPH01142073A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61270363A (en) * | 1985-05-14 | 1986-11-29 | インランド スチ−ル カンパニ− | Diffused alloy steel foil |
| JPS6211547A (en) * | 1985-05-28 | 1987-01-20 | ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト | Catalyst carrier made of metal |
| JPS61281861A (en) * | 1985-06-04 | 1986-12-12 | ア−ムコ、インコ−ポレ−テツド | Oxidation resistant ferrous matrix foil and its production |
| JPS6344942A (en) * | 1986-03-31 | 1988-02-25 | Nippon Steel Corp | Preparation of catalyst substrate for automobile exhaust gas purifying device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219454A (en) * | 1988-07-06 | 1990-01-23 | Nippon Yakin Kogyo Co Ltd | Production of ferritic stainless steel foil coated with oxide whisker |
| JPH0312142B2 (en) * | 1988-07-06 | 1991-02-19 | Nippon Yakin Kogyo Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0240734B2 (en) | 1990-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4318828A (en) | Enhanced oxide whisker growth on cold-rolled aluminum-containing stainless steel foil | |
| GB2094656A (en) | Oxide-whisker-covered structural member | |
| JPH06126192A (en) | Production of metallic foil coated with oxide | |
| KR910009401B1 (en) | Production process of ferrite stainless steel covered with oxide whisker | |
| US4931421A (en) | Catalyst carriers and a method for producing the same | |
| JPS59145048A (en) | Catalyst, preparation and use thereof | |
| JPH01142073A (en) | Production of ferritic stainless steel coated with oxide whisker | |
| JPH08332394A (en) | Exhaust gas-cleaning metal carrier catalyst, and its manufacture | |
| JPS59130538A (en) | Catalyst, preparation and use thereof | |
| US4867811A (en) | Processes for production of metallic catalyst-carrier and catalytic component | |
| JPH0548294B2 (en) | ||
| JPH0356147A (en) | Preparation of catalyst carrier | |
| JPH08197B2 (en) | Substrate for catalyst converter | |
| JPH0219454A (en) | Production of ferritic stainless steel foil coated with oxide whisker | |
| JPH0226643A (en) | Catalyst carrier | |
| JPH0350199A (en) | Formation of alumina whisker on surface of fe-cr-al type ferritic stainless steel | |
| JPH0478447A (en) | Catalytic metal carrier and production thereof | |
| JPH0543984A (en) | Oxidation resisting metal foil and its production | |
| JPS6295142A (en) | Surface treatment for metallic foil used for catalytic carrier | |
| JPS62144750A (en) | Preparation of platinum group oxidizing catalyst | |
| JPH03196845A (en) | Production of catalyst carrier | |
| JPH046421B2 (en) | ||
| JPH02289498A (en) | Formation of alumina whisker | |
| JPS58139743A (en) | Production of metallic nickel catalyst | |
| JPS5923861B2 (en) | Catalyst and its manufacturing method |