Title:
PREPARATION METHOD FOR COMPOSITE FILM WITH SELF-REPAIRING FUNCTION, PRODUCT, AND USE
Document Type and Number:
WIPO Patent Application WO/2023/246176
Kind Code:
A1
Abstract:
The present invention relates to the technical field of metal material surface treatment, and provides a preparation method for a composite film with a self-repairing function, a product, and a use. The method comprises the following steps: adding cobalt salt, tungsten salt, a complexing agent and a buffering agent into water to obtain a mixed solution, and adjusting the pH value to be acidic to obtain an acidic solution; adding a cerium oxide and a surfactant into the acidic solution to obtain an electrolyte system; and placing a metal substrate in the electrolyte system for electrodeposition to obtain a composite film with a self-repairing function. According to the present invention, constant-potential composite electrodeposition is performed on a metal material substrate, a micron-scale composite film with a self-repairing function and a thickness of 6-8 μm is finally formed on the surface of the metal material, the composite film is continuous and complete and has a compact structure, the hardness is 251.0 HV, and when cracks are generated on the surface, the composite film is placed in 3.5 wt.% NaCl solution for 7 days, that is, in the presence of a corrosive medium Cl-, the cracks are healed.
Inventors:
HU ZHENGYAN (CN)
WEI GUOYING (CN)
WEI GUOYING (CN)
Application Number:
PCT/CN2023/079965
Publication Date:
December 28, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
UNIV JILIANG CHINA (CN)
International Classes:
C25D3/56; C25D15/00; C25D21/14
Foreign References:
| CN115029744A | 2022-09-09 | |||
| CN101210305A | 2008-07-02 | |||
| US20170051156A1 | 2017-02-23 | |||
| CN103014819A | 2013-04-03 | |||
| CN101182645A | 2008-05-21 | |||
| CN110644026A | 2020-01-03 | |||
| CN113684511A | 2021-11-23 | |||
| KR20090071162A | 2009-07-01 | |||
| US20100304179A1 | 2010-12-02 |
Other References:
RIĐOŠIĆ MARIJA, SALICIO-PAZ ASIER, GARCÍA-LECINA EVA, ZABINSKI PIOTR, ŽIVKOVIĆ LJILJANA S., BAJAT JELENA B.: "The effect of the ultrasound agitation and source of ceria particles on the morphology and structure of the Zn–Co–CeO2 composite coatings", JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY, ELSEVIER EDITORA LTDA, BR, vol. 13, 1 July 2021 (2021-07-01), BR , pages 1336 - 1349, XP093120853, ISSN: 2238-7854, DOI: 10.1016/j.jmrt.2021.05.064
ZHAO HAIYING; WENG DUO; LU JINLIN; CHEN SHUWEN: "Study on Preparation and Corrosion Resistance of Electrodeposited W-Co Alloy Coating", LIAONING KEJI DAXUE XUEBAO, LIAONING KEJI DAXUE XUEBAO (2013), 36(6), 569-572 CODEN: LKDXA5; ISSN: 1674-1048, LIAONING KEJI DAXUE XUEBAO (2013), 36(6), 569-572CODEN: LKDXA5; ISSN: 1674-1048, vol. 43, no. 6, 15 December 2020 (2020-12-15), Liaoning Keji Daxue Xuebao (2013), 36(6), 569-572CODEN: LKDXA5; ISSN: 1674-1048 , pages 401 - 404, 418, XP009551457, ISSN: 1674-1048, DOI: 10.13988/j.ustl.2020.06.001
ZHAO HAIYING; WENG DUO; LU JINLIN; CHEN SHUWEN: "Study on Preparation and Corrosion Resistance of Electrodeposited W-Co Alloy Coating", LIAONING KEJI DAXUE XUEBAO, LIAONING KEJI DAXUE XUEBAO (2013), 36(6), 569-572 CODEN: LKDXA5; ISSN: 1674-1048, LIAONING KEJI DAXUE XUEBAO (2013), 36(6), 569-572CODEN: LKDXA5; ISSN: 1674-1048, vol. 43, no. 6, 15 December 2020 (2020-12-15), Liaoning Keji Daxue Xuebao (2013), 36(6), 569-572CODEN: LKDXA5; ISSN: 1674-1048 , pages 401 - 404, 418, XP009551457, ISSN: 1674-1048, DOI: 10.13988/j.ustl.2020.06.001
Attorney, Agent or Firm:
BEIJING SHENGXUN IP AGENT LLC (CN)
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