KR890008346A - 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법 - Google Patents

산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법 Download PDF

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KR890008346A
KR890008346A KR1019880015825A KR880015825A KR890008346A KR 890008346 A KR890008346 A KR 890008346A KR 1019880015825 A KR1019880015825 A KR 1019880015825A KR 880015825 A KR880015825 A KR 880015825A KR 890008346 A KR890008346 A KR 890008346A
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stainless steel
aluminum
oxide whisker
ferritic stainless
plating
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KR1019880015825A
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KR910009401B1 (ko
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유지 이께가미
노보루 다찌노
시니찌 사사야마
다께시 가미야
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니뽄 야낑 고오교오 가부시끼가이샤
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Priority claimed from JP63166958A external-priority patent/JPH0699788B2/ja
Priority claimed from JP63166959A external-priority patent/JPH0219454A/ja
Priority claimed from JP63221279A external-priority patent/JPH0674200B2/ja
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/1215—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding for other purposes than joining, e.g. built-up welding
    • C—CHEMISTRY; METALLURGY
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    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
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    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
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    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
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    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
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Abstract

내용 없음

Description

산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실시예 1에서 얻은 스테인리스강 SUS430의 표면상의 산화물 위스커(Al2O3)의 성장을 나타낸 주사형 전자현미경사진.
제2도는 실시예 2에서 얻은 스테인리스강(18% Cr-2.5% Al)의 표면상의 산화물 위스커(Al2O3)의 성장을 나타낸 주사형 전자현미경사진.

Claims (15)

  1. 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법에 있어서, 알미늄으로 스테인리스강 표면을 도금하고, 상기 알미늄을 진공 또는 비산화성 가스중에서 가열하여 상기 스테인리스강내로 확산시켜 상기 페라이트상으로 변화시키고 대기중에서 가열시켜 산화물 위스커를 거기에 성장시키는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  2. 제1항에 있어서, 상기 페라이트 스테인리스강은 저알미늄 함유의 것 즉, 3% 이하의 알루미늄을 함유하는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  3. 제1항 또는 2항에 있어서, 상기 페라이트 스테인리스강이 저알미늄함유의 것으로 10~30%의 크롬과 3% 이하의 알루미늄을 함유하는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  4. 제1~3항중 어느 항에 있어서, 상기 페라이트 스테인리스강이 박상인 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  5. 제1~4항중 어느 항에 있어서, 상기 알미늄도금이 기계적 도금법에 의해서, 알미늄 또는 알미늄합금 부러슈로 행해지는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  6. 제1~4항중 어느 항에 있어서, 상기 알미늄도금이 기계적 도금법에 의해서 알미늄 또는 알미늄 블록을 도금금속으로서 사용하여 행해지는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  7. 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법에 있어서, 페라이트 스테인리스강 표면에 기계적 도금법에 의해서 알미늄을 도금하고, 상기 페라이트 스테인스강을 냉각압연하여 박으로 만들고, 상기 박의 표면을 고알미늄 함유 페라트 상으로 변화시키기 위하여 상기 알미늄내를 상기 박내에 확산되도록 전공 또는 비산화성가스중에서 상기 박을 가열시키고, 그 표면에 산화물 위스커가 성장되도록 상기 박을 재가열시키는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  8. 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법에 있어서, 상기 페라이트 스테인리스강 표면에 기계적 도금법에 의해서 알미늄을 도금하고, 상기 페라이트 스테인리스강의 표면을 고알미늄 함유 페라이트 상으로 변화시키기 위하여 상기 페라이트 스페인리스강내로 알미늄이 확산되도록 진공 또는 비산화성 가스내에서 상기 페라이트 스테인리스강을 가열시키고, 상기 페라이트 스테인리스강을 냉각압연하여 박으로 만들고, 그 표면에 산화물 위스커가 성장되도록 재가열시키는 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  9. 제1~8항의 어느 항에 있어서, 상기 페라이트 스테인리스강내로 알미늄을 확산시키는 가열온도가 700~1200℃인 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  10. 제1~8항의 어느 항에 있어서, 상기 페라이트 스테인리스강 상에 상기 산화물 위스커를 성장시키는 가열온도가 850~950℃인 것을 특징으로 하는 산화물 위스커로 피복된 페라이트 스테인리스강의 제조방법.
  11. 상기 산화물 위스커가 제1~10항의 방법에 의해서 성장되는 θ-알미나로 되는 페라이트 스테인리스박.
  12. 제11항 기재의 θ-알미나 위스커로 피복된 페라이트 스테인리스강박을 촉매함침하는 자동차배기 콘버터에 사용되는 촉매담체.
  13. 적어도 표면이 초기에 10-30%의 크롬(Cr)와 6-20%의 알미늄(Al)을 함유하는 Fe 기재금속을 산소분압 0.04atm의 분위기중에서 600~1100℃의 온도로 가열한 후에 대기중에서 850~975℃의 온도가열하여 Fe기재 금속상에 θ-Al2O3을 성장시키는 방법.
  14. 알미나 위스커로 피복된 페라이트 스테인리스강을 975~1200℃의 온도로 가열하는 것을 특징으로 하는 알미나 위스커의 성장 제어방법.
  15. 제14항에 있어서, 상리 알미나 위스커가 975℃ 이하의 온도의 산화분위기 중에서 성장되게 하는 알미나 위스커의 성장 제어방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880015825A 1987-11-30 1988-11-30 산화물 위스커(wisker)로 피복된 페라이트 스테인리스강의 제조방법 KR910009401B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP62-299711 1987-11-30
JP62299711A JPH01142073A (ja) 1987-11-30 1987-11-30 酸化物ウイ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
JP63-166958 1988-07-06
JP63166958A JPH0699788B2 (ja) 1988-07-06 1988-07-06 アルミナウィスカー成長抑制方法
JP63166959A JPH0219454A (ja) 1988-07-06 1988-07-06 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の製造方法
JP63-166959 1988-07-06
JP63221279A JPH0674200B2 (ja) 1988-09-06 1988-09-06 ウィスカー状θ―Ａ▲ｌ▼▲下２▼Ｏ▲下３▼の製造方法
JP63-221279 1988-09-06

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EP (2) EP0318864B1 (ko)
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EP0318864A1 (en) 1989-06-07
DE3883722T2 (de) 1994-02-24
US5017544A (en) 1991-05-21
EP0493373A3 (ko) 1994-01-26
EP0493373A2 (en) 1992-07-01
US5055145A (en) 1991-10-08
KR910009401B1 (ko) 1991-11-15
EP0318864B1 (en) 1993-09-01
DE3883722D1 (de) 1993-10-07

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