Title:
METHOD FOR PREPARING WELDING JOINT PROTECTIVE COATING, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/206588
Kind Code:
A1
Abstract:
Disclosed are a method for preparing a welding joint protective coating, and the use thereof. The welding joint protective coating has a double-layer structure having an anodized aluminum layer and an Ni-P plating layer, and is applied to a welding seam surface of friction stir welding of an aluminum alloy. The method for preparing the welding joint protective coating comprises the following steps: 1) pretreating a welding seam surface of an aluminum alloy to obtain a flat and smooth welding seam surface of the aluminum alloy to be reinforced; 2) anodizing the welding seam surface of the aluminum alloy to be reinforced to obtain a compact and porous anodized aluminum intermediate layer; 3) activating and pore-enlarging the anodized aluminum intermediate layer to obtain a welding seam surface of the aluminum alloy to be plated with nickel; and 4) subjecting the welding seam surface of the aluminum alloy to be plated with nickel to an electrochemical nickel plating treatment so as to obtain the welding joint protective coating. Not only can the present invention improve the bonding strength between a nickel plating layer and a substrate, but also, the corrosion resistance and abrasion resistance of a welding seam of an aluminum alloy can be improved.
Inventors:
WANG YUXIN (CN)
CHEN JIAHUAN (CN)
YANG YIFAN (CN)
HE ZHEN (CN)
CHEN SHUJIN (CN)
CHEN JIAHUAN (CN)
YANG YIFAN (CN)
HE ZHEN (CN)
CHEN SHUJIN (CN)
Application Number:
PCT/CN2022/082978
Publication Date:
October 06, 2022
Filing Date:
March 25, 2022
Export Citation:
Assignee:
UNIV JIANGSU SCIENCE & TECH (CN)
International Classes:
C25D11/08; C25D3/56; C25D7/00; C25D11/16; C25D11/24; C25F3/20
Foreign References:
| CN113089048A | 2021-07-09 | |||
| CN103358104A | 2013-10-23 | |||
| CN110724992A | 2020-01-24 |
Other References:
YUXIN WANG ET AL.: "Influence of pretreatments on physicochemical properties of Ni-P coatings electrodeposited on aluminum alloy", MATERIALS AND DESIGN, vol. 197, 21 October 2020 (2020-10-21), XP086365963, ISSN: 0264-1275, DOI: 10.1016/j.matdes.2020.109233
ABDEL-GAWAD SOHA A., OSMAN WALID M., FEKRY AMANY M.: "A development of novel Ni–P coating on anodised aluminium alloys for military industries applications in artificial sea water", SURFACE ENGINEERING., INSTITUT OF MATERIALS, LONDON., GB, vol. 35, no. 12, 13 June 2019 (2019-06-13), GB , pages 1033 - 1041, XP009540545, ISSN: 0267-0844, DOI: 10.1080/02670844.2019.1621004
XU FANGQIANG, ZOU SONGHUA;SUN JING;FAN QUANSHENG;ZHANG YUE;CAO YAJIE: "Influence of Sulfuric Acid-Potassium Sodium Tartrate Wide Temperature Anodizing on Welding Quality of Aluminium Alloy", PLATING & FINISHING, vol. 41, no. 11, 15 November 2019 (2019-11-15), pages 14 - 17, XP055974645, ISSN: 1001-3849, DOI: 10.3969/j.issn.1001@BULLET3849.2019.11.004
JIAAN LIU ET AL.: "Improved corrosion resistance of friction stir welded magnesium alloy with micro-arc oxidation/electroless plating duplex coating", MATERIALS CHEMISTRY AND PHYSICS, vol. 257, 24 August 2020 (2020-08-24), XP086329231, ISSN: 0254-0584, DOI: 10.1016/j.matchemphys.2020.123753
LI SHIHAO: "Preparation and Corrosion Resistance of Composite Coating on the Surface of Magnesium Alloy Friction Stir Welded Joint", MASTER THESIS, TIANJIN POLYTECHNIC UNIVERSITY, CN, no. 8, 15 August 2020 (2020-08-15), CN , XP055974643, ISSN: 1674-0246
ABDEL-GAWAD SOHA A., OSMAN WALID M., FEKRY AMANY M.: "A development of novel Ni–P coating on anodised aluminium alloys for military industries applications in artificial sea water", SURFACE ENGINEERING., INSTITUT OF MATERIALS, LONDON., GB, vol. 35, no. 12, 13 June 2019 (2019-06-13), GB , pages 1033 - 1041, XP009540545, ISSN: 0267-0844, DOI: 10.1080/02670844.2019.1621004
XU FANGQIANG, ZOU SONGHUA;SUN JING;FAN QUANSHENG;ZHANG YUE;CAO YAJIE: "Influence of Sulfuric Acid-Potassium Sodium Tartrate Wide Temperature Anodizing on Welding Quality of Aluminium Alloy", PLATING & FINISHING, vol. 41, no. 11, 15 November 2019 (2019-11-15), pages 14 - 17, XP055974645, ISSN: 1001-3849, DOI: 10.3969/j.issn.1001@BULLET3849.2019.11.004
JIAAN LIU ET AL.: "Improved corrosion resistance of friction stir welded magnesium alloy with micro-arc oxidation/electroless plating duplex coating", MATERIALS CHEMISTRY AND PHYSICS, vol. 257, 24 August 2020 (2020-08-24), XP086329231, ISSN: 0254-0584, DOI: 10.1016/j.matchemphys.2020.123753
LI SHIHAO: "Preparation and Corrosion Resistance of Composite Coating on the Surface of Magnesium Alloy Friction Stir Welded Joint", MASTER THESIS, TIANJIN POLYTECHNIC UNIVERSITY, CN, no. 8, 15 August 2020 (2020-08-15), CN , XP055974643, ISSN: 1674-0246
Attorney, Agent or Firm:
CHINA FARFIR INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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