JPS62205300A - Production of porous steel - Google Patents
Production of porous steelInfo
- Publication number
- JPS62205300A JPS62205300A JP4725486A JP4725486A JPS62205300A JP S62205300 A JPS62205300 A JP S62205300A JP 4725486 A JP4725486 A JP 4725486A JP 4725486 A JP4725486 A JP 4725486A JP S62205300 A JPS62205300 A JP S62205300A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- anode
- phase contg
- ferrite
- electrolyte
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- 238000004090 dissolution Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910001566 austenite Inorganic materials 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 229910000734 martensite Inorganic materials 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 210000003323 beak Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は耐酸性及び強度を有するフェライト系ステンレ
ス鋼の特徴を備え、数１０μｍｎサイズの超微細孔を有
する多孔質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 porous steel having the characteristics of ferritic stainless steel having acid resistance and strength, and having ultrafine pores of several tens of μm in size.
［従来の技術 問題点］
従来、超微細な多孔質物質は有機化合物または無機化合
物を使用して製造されているため高温て部用することが
困難であったり、また、熱伝導性、電気伝導性が悪く、
このような特長を利用する分野での使用は不可とされて
きた。[Conventional technology problems] Conventionally, ultrafine porous materials have been manufactured using organic or inorganic compounds, so it has been difficult to use them at high temperatures, and they have poor thermal conductivity and electrical conductivity. bad sex,
It has been considered impossible to use it in fields that utilize such features.
また、金属材料による多孔質物質は発泡金属などのよう
に、気孔サイズが数１にも及ぶものでＬＰ）す、アルミ
ニウム、銅などの低融点金属を主体とするものてあった
。In addition, porous materials made of metal materials, such as metal foams, have pore sizes as large as several 1, and are mainly made of low melting point metals such as aluminum and copper.
係る点から、本発明方法の目的は、従来得ることができ
なかった高強度及び高延性をもち且つ耐熱性、電気伝導
性及び熱伝導性に浸れた多孔質鋼の製造方法にある。From this point of view, the purpose of the method of the present invention is to provide a method for producing porous steel that has high strength and high ductility that could not be obtained conventionally, and is also highly heat resistant, electrically conductive, and thermally conductive.
し問題点を解決するための手段〕
従って、本発明はＣｒ含有量の多いフェライＩ・（ｌが
晶出した二相以−Ｌの組織を有する鉄鋼材Ｆ（をアノー
ドレ１．て電解液中でＣｒ含含有−少ない相を定電位溶
解消失させ、Ｃｒ含有旦の多いフエラ・イ）〜相を残存
させることを特徴とする多孔質鋼の製造方法を提供する
にある。[Means for Solving the Problems] Therefore, the present invention provides a method for using a steel material F (having a two-phase structure in which ferrite I/(l) crystallized with a high Cr content in an electrolytic solution using an anode drop 1. An object of the present invention is to provide a method for producing porous steel, which is characterized in that a phase with a low Cr content is eliminated by constant potential dissolution, and a phase with a high Cr content remains.
［作 用］
本発明は鉄鋼材料において数１０ ／４ ＋ｎサイスの
気孔を有する多孔質鋼の製造方法に関ゴるものであり、
その原理３以下に説明ずろ９
高クロム−ニッケル鋼においＣ、オーステナイト生成元
素及びフェライト生成元素を調整することにより、語調
の組成はオーステナイト〜・相、マルテンサイト−相、
フェライト−相またはこれらの二相または三相が混在し
たものが得られる。なお、本発明の製造方法の対象とな
る高クロム−ニッケル鋼はフェライト相にオーステナイ
ト相またはフルテンサイ１〜相のいずれかまたは両方を
含む二相組織または３相組織を呈するものである。この
とき、フェライト相はオーステナイト相またはマルテン
サイト相に比較してＣｒの分配が大きく、Ｃ「含有Ｉが
相対的に高くなる。本発明製造方法は上述の如く、相間
におけるＣｒ含有量の差によるアノード溶解挙動の変化
を利用したものである。[Function] The present invention relates to a method for producing porous steel having pores of several 10/4 + n size in steel materials,
The principle 3 is explained below.9 By adjusting C, austenite-forming elements and ferrite-forming elements in high chromium-nickel steel, the tone composition can be changed to austenite phase, martensite phase, martensite phase,
A ferrite phase or a mixture of these two or three phases can be obtained. The high chromium-nickel steel to which the manufacturing method of the present invention is applied exhibits a two-phase or three-phase structure containing a ferrite phase and either or both of an austenite phase and a full tensile strength 1 to 1 phase. At this time, the ferrite phase has a larger distribution of Cr than the austenite phase or martensite phase, and the C content is relatively high. This method takes advantage of changes in anode dissolution behavior.
第１図はＣｒ含有量の異なるクロム鋼（Ｆｅ−Ｃｒフェ
ライト系合金）のアノード分極曲線を示すもので、Ｃｒ
含有量の増加に伴って不動悪化電位（Ｅｌ＋）が卑な方
向にずれるから、Ｃｒ含有量の少ない鋼がアノードビー
ク電流にある電位では、Ｃｒ−含有量の高い鋼はすでに
不動態化されているためアノード溶解は抑制される。Figure 1 shows the anode polarization curves of chromium steel (Fe-Cr ferritic alloy) with different Cr contents.
Since the immobility deterioration potential (El+) shifts towards the base with increasing content, at the potential where the steel with low Cr content is at the anodic peak current, the steel with high Cr- content is already passivated. Therefore, anodic dissolution is suppressed.
従って、不動態化？生ずる不動態化−２位（Ｅｂ）によ
り溶解を行なう（定電位溶解）と、Ｃｒ含有１の多い相
のみが残存して多孔質鋼を製造することができる。ちな
みに、フェライト相と、オーステナイ１−相及び／また
はマルテンサイト相とからなる高クロム鋼に上記の定電
位溶解を行なうとクロム含有量の多いフェライト相が残
存して他の相は溶解してしまうことにより多孔質鋼を製
造することができる。Therefore, passivation? When the resulting passivation-2 position (Eb) is used for melting (potential-potential melting), only the Cr-rich 1-rich phase remains, making it possible to produce porous steel. By the way, if the above constant potential melting is performed on high chromium steel consisting of a ferrite phase and an austenite phase and/or a martensitic phase, the ferrite phase with a high chromium content will remain and the other phases will dissolve. Porous steel can be produced by this process.
定電位溶解を行なうための装置は任意の照合電極（例え
ば市販の飽和せ采電極）を使用するポテンシオスタット
であり、作用電極すなわちアノードにフェライト相と他
の相からなる鉄鋼材料を用いる。The device for performing potentiostatic dissolution is a potentiostat using any reference electrode (eg, a commercially available saturated glaze electrode), and the working electrode or anode is a steel material consisting of a ferrite phase and other phases.
定電位溶解に使用することができる電解液は塩酸、硫酸
、硝酸系溶液またはそれらの混合液であり、定電位溶解
を行なう鋼によって電解液の種類と濃度を選択すること
ができる。The electrolyte that can be used for constant potential dissolution is a hydrochloric acid, sulfuric acid, nitric acid solution, or a mixture thereof, and the type and concentration of the electrolyte can be selected depending on the steel to be subjected to constant potential dissolution.
定電位溶解を行なうための電解条件のなかで重要なもの
は設定電位であり、ＣｒＪｌの高いデルタフェライト相
は不動態化して溶出せず、他のマトリックスのみが溶解
するような電位を選ばなければならない。そのためには
用いる鉄鋼材料で予めアノード分極曲線を測定したけれ
ばならない。第２図に実施例で使用する下記の第１表に
示す化学組成を有する高クロム−ニラゲル鋼のアノード
分極曲線を示す。責な電位側に現れるアノードビーク（
２次アノードビーク）はＣｒ含有量の少ない相が不動態
化しにくいため引きずられて生ずるものであり、この電
位においては、デルタフェライト相は既に不動態化して
いる。従って、この２次アノードピークを示す電位が設
定電位として最適である。Among the electrolytic conditions for potentiostatic dissolution, the important thing is the set potential, and the potential must be selected so that the delta ferrite phase with high CrJl becomes passivated and cannot be eluted, and only other matrices are dissolved. It won't happen. For this purpose, it is necessary to measure the anode polarization curve of the steel material used in advance. FIG. 2 shows an anode polarization curve of high chromium-Nyragel steel having the chemical composition shown in Table 1 below, which is used in the examples. Anode beak (
The secondary anode beak) is caused by the phase having a low Cr content being difficult to passivate, and at this potential, the delta ferrite phase has already been passivated. Therefore, the potential exhibiting this secondary anode peak is optimal as the set potential.
［実 施 例コ
実」１泗−
以下の第１表に示す化学組成を有し、マルテンサイト＋
フェライト＋オーステナイト三相からなる高クロム−ニ
ラゲル鋼を用いて本発明方法により多孔質鋼を製造した
。[Example Example 1] - Having the chemical composition shown in Table 1 below, martensite +
A porous steel was manufactured by the method of the present invention using a high chromium-Nylagel steel consisting of three phases of ferrite and austenite.
コ）二Ｌ’、＜ ３’Ｊｉ −（’） ”’
（ｆｆｉ、ｆｆＥ％）まず、前述の如く、第
１表の組成を有する高クロム−ニッケル鋼の飽和甘木電
極に対するアノード分極曲線を１規定Ｈ、Ｓ Ｏ、電解
溶液中で求め、第２図を得な。次いで、ポテンシオスタ
ットを使用し、１規定のＨ２ＳＯ，電解溶液中で第２図
より０ポル（へを設定電位として約２４時間にわたり定
電位溶解を行ない多孔質鋼を得た。J) 2L', <3'Ji-(')'''
(ffi, ffE%) First, as mentioned above, the anode polarization curve for a saturated Amagi electrode of high chromium-nickel steel having the composition shown in Table 1 was determined in 1N H, SO, electrolytic solution, and Fig. Good value. Next, using a potentiostat, constant potential melting was carried out for about 24 hours in an electrolytic solution of 1N H2SO with a set potential of 0 pol (as shown in FIG. 2) to obtain porous steel.
本発明方法により処理された高りロｌ＼−ニッケル鋼は
デルタフェライト相だけが残存し、オーステナイ１〜並
びにマルテンサイト相が溶解消失した多孔質鋼となる。The high-strength nickel steel treated by the method of the present invention becomes a porous steel in which only the delta ferrite phase remains, and the austenite 1 to martensite phases have dissolved and disappeared.
［発明の効果］
本発明方法により従来は製造できなかった多孔質鋼が製
造可ｆ１ヒになった。[Effects of the Invention] By the method of the present invention, porous steel, which could not be manufactured in the past, can now be manufactured.
第１図はＦ ｅ −Ｃｒ合金のアノード５＋極曲線を示
す図であり、第２図は実施例で使用した高クロム−ニラ
ゲル鋼のアノード分極曲線を示す図である。
特許出願人 株式会社日本製鋼所
第２図
↑ 電但Ｅｈ（Ｖ）
Ｖじデ警立FIG. 1 is a diagram showing the anode 5+ polar curve of the Fe--Cr alloy, and FIG. 2 is a diagram showing the anode polarization curve of the high chromium-Nyragel steel used in the examples. Patent applicant Japan Steel Works, Ltd. Figure 2 ↑ Dentan Eh (V) Vjide Keitatsu
Claims (1)
組織を有する鉄鋼材料をアノードとして電解液中でＣｒ
含有量の少ない相を定電位溶解消失させ、Ｃｒ含有量の
多いフェライト相を残存させることを特徴とする多孔質
鋼の製造方法。Using a steel material with a structure of two or more phases in which a ferrite phase with a high Cr content is crystallized as an anode, Cr is applied in an electrolyte.
A method for producing porous steel, characterized in that a phase with a low content is eliminated by constant potential dissolution, and a ferrite phase with a high Cr content remains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4725486A JPS62205300A (en) | 1986-03-06 | 1986-03-06 | Production of porous steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4725486A JPS62205300A (en) | 1986-03-06 | 1986-03-06 | Production of porous steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62205300A true JPS62205300A (en) | 1987-09-09 |
Family
ID=12770133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4725486A Pending JPS62205300A (en) | 1986-03-06 | 1986-03-06 | Production of porous steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62205300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013300A1 (en) * | 2000-08-05 | 2002-02-14 | Ineos Chlor Limited | Stainless steel substrate treatment |
| GB2385333A (en) * | 2002-02-13 | 2003-08-20 | Ineos Chlor Ltd | A Treatment for Stainless Steel Plates Used in Electrochemical Cell Assemblies |
-
1986
- 1986-03-06 JP JP4725486A patent/JPS62205300A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013300A1 (en) * | 2000-08-05 | 2002-02-14 | Ineos Chlor Limited | Stainless steel substrate treatment |
| AU2001272664B2 (en) * | 2000-08-05 | 2006-02-16 | Ineos Enterprises Limited | Stainless steel substrate treatment |
| GB2385333A (en) * | 2002-02-13 | 2003-08-20 | Ineos Chlor Ltd | A Treatment for Stainless Steel Plates Used in Electrochemical Cell Assemblies |
| EP1336670A3 (en) * | 2002-02-13 | 2003-08-27 | Ineos Chlor Limited | Plate treatment |
| GB2385333B (en) * | 2002-02-13 | 2005-09-28 | Ineos Chlor Ltd | Plate treatment |
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