WO1998031850A1 - Procede de traitement de surface pour metaux - Google Patents

Procede de traitement de surface pour metaux Download PDF

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Publication number
WO1998031850A1
WO1998031850A1 PCT/JP1998/000204 JP9800204W WO9831850A1 WO 1998031850 A1 WO1998031850 A1 WO 1998031850A1 JP 9800204 W JP9800204 W JP 9800204W WO 9831850 A1 WO9831850 A1 WO 9831850A1
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WO
WIPO (PCT)
Prior art keywords
zinc
iron
coating
iron alloy
chromium
Prior art date
Application number
PCT/JP1998/000204
Other languages
English (en)
Japanese (ja)
Inventor
Masaaki Ide
Dawei Wei
Original Assignee
Aoyama Seisakusho Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aoyama Seisakusho Co., Ltd. filed Critical Aoyama Seisakusho Co., Ltd.
Publication of WO1998031850A1 publication Critical patent/WO1998031850A1/fr

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Classifications

    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • 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
    • C23C28/02—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 only coatings only including layers of metallic material
    • C23C28/023—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 only coatings only including layers of metallic material only coatings of metal elements only
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/02—Coating starting from inorganic powder by application of pressure only
    • C23C24/04—Impact or kinetic deposition of particles

Definitions

  • the present invention relates to a metal surface treatment method for imparting excellent corrosion resistance.
  • JP-A-56-45372 Japanese Patent Publication No. 59-9312
  • a zinc-iron alloy coating layer is formed around an iron-based nucleus.
  • a blast zinc coating method in which a blast material is projected onto a metal surface to be processed.
  • the parts are treated with an aqueous dispersion mainly composed of chromic acid, zinc flakes and organic solvents, and then subjected to about 300 ° C.
  • an aqueous dispersion mainly composed of chromic acid, zinc flakes and organic solvents There is known a method of baking for a predetermined period of time to form a water-proof coating having a structure in which zinc metal is bonded with a trivalent chromium compound on the surface.
  • the former blast zinc coating method
  • the salt spray test method (JISZ2371) Salt spray test method '' Compliance.
  • the redness is generated within a few hours, so its corrosion resistance is only temporary.
  • the latter chromium anti-corrosion coating method
  • the passivation of the protective coating shows high corrosion resistance, but if the treatment is inadequate, the coating will be defective and the substrate will start to develop early. Baking is required, which requires a long processing time and increases processing costs.
  • the present invention solves the above-mentioned problems of the prior art, that is, provides a metal surface treatment method capable of imparting excellent corrosion resistance and corrosion protection effect, and having a short treatment time and a low treatment cost. It is intended for that purpose.
  • the present invention relates to a method for treating a surface of an iron-based substrate, which comprises projecting a blast material having a coating layer made of a zinc-iron alloy around an iron-based nucleus onto the substrate.
  • a porous zinc-iron alloy film is formed on the surface of the film, and then a zinc-chromium film is formed in the voids and on the surface of the zinc-iron alloy film.
  • the amount of zinc (hereinafter referred to as the total amount of adhered zinc) in the above-mentioned coating (“zinc-iron alloy coating” + “zinc-chromium coating”) is from 160 to 180 mg / dm 2.
  • the amount of zinc in the zinc-iron alloy coating before the formation of the zinc-chromium coating (hereinafter referred to as the amount of initially deposited zinc) is 85 mg / dm 2. Is preferably not exceeded.
  • the total amount of deposited zinc is 210 to 220 mg / dm 2 , and the amount of initially deposited zinc does not exceed 145 mg / dm 2 .
  • FIG. 1 is a cross-sectional view of an iron-based substrate obtained by applying the method of the present invention
  • FIG. 2 is a drawing showing “Zinc-iron alloy coating” obtained by applying the method of the present invention.
  • FIG. 6 is a graph showing the results of comparing the amount of zinc in a “chromium film” with the amount of zinc in a zinc-iron alloy film obtained only by the conventional blast zinc coating method using the treatment time as a parameter.
  • the substrate to be treated in the present invention is various kinds of automobile parts such as ports, nuts, springs, and brackets made of iron or an iron alloy, vehicle / marine parts, and building materials.
  • a blast zinc coating method is applied to such an iron-based substrate to form a porous zinc-iron alloy coating on the surface of the substrate.
  • a blast material having a coating layer made of a zinc-iron alloy around an iron-based core
  • the coating layer migrates from the blast material to the surface and is sequentially laminated, and a porous zinc-iron alloy film (2) is formed on the surface.
  • the present inventors have conducted various studies as to why the zinc-iron alloy coating formed by the blast zinc coating method can only exhibit temporary corrosion resistance, and found that the absolute amount of zinc adhering to the zinc-iron alloy coating and It was determined that the structure of the coating had a significant effect on corrosion resistance.
  • a zinc-chromium coating (3a, 3) is added to the inside of the void of the zinc-iron alloy coating and the surface thereof. We decided to deal with it by forming it in a method.
  • This zinc-chromium coating is formed by immersing the substrate (1) having the zinc-iron alloy coating (2) formed on its surface in an aqueous dispersion composed of a composition mainly composed of chromic anhydride. After that (this aqueous dispersion may be applied to the substrate), baking is performed at a temperature of about 300 ° C. for a predetermined time. According to this method, the component of the zinc-chromium coating (3) formed on the surface of the zinc-iron alloy coating (2) penetrates into the voids of the zinc-iron alloy coating (the formed iron-chromium coating). Is indicated by reference numeral 3a) (as a result, the total amount of zinc deposited increases), so that the required amount of zinc deposited can be secured in a short time. The chromium coating will bond firmly to the zinc-iron alloy coating, and the zinc-iron alloy coating will be denser, resulting in long-term protection combined with the zinc-chromium coating's own protection. Corrosion resistance over a wide range.
  • the formation of the zinc-chromium film (3) is different from the conventional one, and may be one coat and one bake.
  • a hexagonal mild steel port for automobiles of M8 x 60 mm was prepared as a test piece.
  • a blast zinc coating method was applied for 15 minutes using a blast material having a zinc-iron alloy coating layer around an iron-based spherical core. (thickness 5 m of the formed zinc iron alloy coating, the initial zinc coating weight was 8 3 g / d 2).
  • the porto having the zinc-iron alloy film formed on the surface thereof was converted into an aqueous dispersion comprising a composition mainly composed of chromic anhydride (trade name: DX-, manufactured by Nippon Dacro Shamrock Co., Ltd.). 380 for 3 min), shake off excess water dispersion with a centrifuge, and bake for 20 min in a furnace maintained at 300 (with air flow). (Total zinc coverage: 170 mg / dm 2 ).
  • the test piece obtained in this manner was subjected to a salt spray test (hereinafter, referred to as an SST test), but no emission was observed even after elapse of 240 hours.
  • the CCT test is a standard set by a Japanese automobile manufacturer's organization, and is a test under more severe conditions than the SST test. Specifically, follow the procedure below.
  • Salt spray (17 hours; temperature of salt water preheater, humidifier and spray chamber: 50 ⁇ 1 ° C; salt concentration: 5 ⁇ l wt%; pH of salt water: 6.5 to 7.2) ;
  • the equipment cost is low and the energy consumption is small as compared with the electric plating method. Furthermore, by appropriately combining the zinc-chromium coating method with a short treatment time and the zinc-chromium coating method with few environmental pollutants, excellent corrosion resistance, which could not be expected by using the zinc zinc coating method alone, was achieved. Surface treatment capable of imparting a protective effect can be performed in a short processing time and at low cost.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

La présente invention concerne un procédé de traitement de surface pour métaux, conférant à ces métaux une bonne résistance à la corrosion et les protégeant contre la rouille, mais permettant également de réduire les temps et les coûts du traitement. En l'occurrence, ce procédé de traitement de surface pour substrats à base de fer consiste, d'abord à projeter un matériau de sablage fait de noyaux à base de fer enrobés dans un alliage de zinc-fer de façon à venir constituer sur la surface du substrat un film poreux d'alliage zinc-fer, puis à former, dans les manques du film poreux d'alliage zinc-fer et sur le film lui-même, un film zinc-chrome.
PCT/JP1998/000204 1997-01-21 1998-01-21 Procede de traitement de surface pour metaux WO1998031850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP831297A JPH10204654A (ja) 1997-01-21 1997-01-21 金属表面処理方法
JP9/8312 1997-01-21

Publications (1)

Publication Number Publication Date
WO1998031850A1 true WO1998031850A1 (fr) 1998-07-23

Family

ID=11689645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000204 WO1998031850A1 (fr) 1997-01-21 1998-01-21 Procede de traitement de surface pour metaux

Country Status (2)

Country Link
JP (1) JPH10204654A (fr)
WO (1) WO1998031850A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052228A1 (fr) * 1999-03-05 2000-09-08 Alcoa Inc. Procede utilise pour deposer un flux ou un flux et un metal sur un substrat metallique pour brasage
US6317913B1 (en) 1999-12-09 2001-11-20 Alcoa Inc. Method of depositing flux or flux and metal onto a metal brazing substrate
CN102400143A (zh) * 2010-09-10 2012-04-04 北京中科三环高技术股份有限公司 一种钕铁硼永磁材料的机械镀锌的表面处理方法
US20140144404A1 (en) * 2011-07-05 2014-05-29 Mahle International Gmbh Method for producing a cylinder liner surface and cylinder liner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101681549B1 (ko) * 2016-01-06 2016-12-01 장철현 방청용 표면처리 시스템 및 방법

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245785A (ja) * 1984-05-18 1985-12-05 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPS6167773A (ja) * 1984-09-11 1986-04-07 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPS61213378A (ja) * 1985-03-18 1986-09-22 Marugo Rubber Kogyo Kk 耐蝕性に優れた金属とゴムの複合体
JPS623573U (fr) * 1985-06-25 1987-01-10
JPS6283476A (ja) * 1985-10-09 1987-04-16 Nippon Funmatsu Gokin Kk バ−ナボデイ
JPS6293383A (ja) * 1985-10-17 1987-04-28 Sumitomo Metal Ind Ltd 耐食性に優れた表面処理鋼材およびその製造方法
JPS62218583A (ja) * 1986-03-19 1987-09-25 Sumitomo Metal Ind Ltd 耐食性に優れた鉄筋
JPS6326383A (ja) * 1986-07-17 1988-02-03 Sawahira:Kk コイルバネのコ−テイング方法
JPS63149386A (ja) * 1986-12-12 1988-06-22 Sumitomo Metal Ind Ltd 塗装後耐食性に優れた被覆鋼材
JPS63230885A (ja) * 1987-03-20 1988-09-27 Dowa Teppun Kogyo Kk 金属表面処理方法
JPS63247378A (ja) * 1987-04-01 1988-10-14 Marui Mekki Kogyo Kk メカニカルプレ−テイング後処理方法
JPS63293172A (ja) * 1987-05-26 1988-11-30 Zojirushi Chain Block Kk 耐蝕性，耐摩耗性および潤滑特性等に優れた鋼製チエンの製造方法
JPH0219477A (ja) * 1988-07-08 1990-01-23 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPH05271957A (ja) * 1992-03-25 1993-10-19 Yuken Kogyo Kk 鉄製構造部品
JPH0681166A (ja) * 1991-10-14 1994-03-22 Toyota Motor Corp 鉄鋼材の表面処理方法
JPH06306631A (ja) * 1993-04-26 1994-11-01 Nippon Dakuro Shamrock:Kk 表面黒色化処理鋼材

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245785A (ja) * 1984-05-18 1985-12-05 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPS6167773A (ja) * 1984-09-11 1986-04-07 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPS61213378A (ja) * 1985-03-18 1986-09-22 Marugo Rubber Kogyo Kk 耐蝕性に優れた金属とゴムの複合体
JPS623573U (fr) * 1985-06-25 1987-01-10
JPS6283476A (ja) * 1985-10-09 1987-04-16 Nippon Funmatsu Gokin Kk バ−ナボデイ
JPS6293383A (ja) * 1985-10-17 1987-04-28 Sumitomo Metal Ind Ltd 耐食性に優れた表面処理鋼材およびその製造方法
JPS62218583A (ja) * 1986-03-19 1987-09-25 Sumitomo Metal Ind Ltd 耐食性に優れた鉄筋
JPS6326383A (ja) * 1986-07-17 1988-02-03 Sawahira:Kk コイルバネのコ−テイング方法
JPS63149386A (ja) * 1986-12-12 1988-06-22 Sumitomo Metal Ind Ltd 塗装後耐食性に優れた被覆鋼材
JPS63230885A (ja) * 1987-03-20 1988-09-27 Dowa Teppun Kogyo Kk 金属表面処理方法
JPS63247378A (ja) * 1987-04-01 1988-10-14 Marui Mekki Kogyo Kk メカニカルプレ−テイング後処理方法
JPS63293172A (ja) * 1987-05-26 1988-11-30 Zojirushi Chain Block Kk 耐蝕性，耐摩耗性および潤滑特性等に優れた鋼製チエンの製造方法
JPH0219477A (ja) * 1988-07-08 1990-01-23 Nippon Dakuro Shamrock:Kk 金属表面処理法
JPH0681166A (ja) * 1991-10-14 1994-03-22 Toyota Motor Corp 鉄鋼材の表面処理方法
JPH05271957A (ja) * 1992-03-25 1993-10-19 Yuken Kogyo Kk 鉄製構造部品
JPH06306631A (ja) * 1993-04-26 1994-11-01 Nippon Dakuro Shamrock:Kk 表面黒色化処理鋼材

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052228A1 (fr) * 1999-03-05 2000-09-08 Alcoa Inc. Procede utilise pour deposer un flux ou un flux et un metal sur un substrat metallique pour brasage
US6344237B1 (en) 1999-03-05 2002-02-05 Alcoa Inc. Method of depositing flux or flux and metal onto a metal brazing substrate
US6317913B1 (en) 1999-12-09 2001-11-20 Alcoa Inc. Method of depositing flux or flux and metal onto a metal brazing substrate
CN102400143A (zh) * 2010-09-10 2012-04-04 北京中科三环高技术股份有限公司 一种钕铁硼永磁材料的机械镀锌的表面处理方法
US20140144404A1 (en) * 2011-07-05 2014-05-29 Mahle International Gmbh Method for producing a cylinder liner surface and cylinder liner
US9488126B2 (en) * 2011-07-05 2016-11-08 Mahle International Gmbh Method for producing a cylinder liner surface and cylinder liner

Also Published As

Publication number Publication date
JPH10204654A (ja) 1998-08-04

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