Aluminum alloy scratch resistant and fingerprint resistant chromium-free chemical conversion solution for ship and preparation method of conversion film
A chemical conversion film and chemical conversion technology, which is applied in the field of marine aluminum alloy decoration and protective coating, can solve the problem that the chemical conversion treatment process is difficult to meet the scratch resistance, and achieve good corrosion resistance.
Inactive Publication Date: 2013-07-24
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The object of the present invention is to provide an environment-friendly anti-scratch and anti-fingerprint chromium-free chemical conversion liquid for marine aluminum alloy and its application in chemical conversion film, so as to solve the problem that the existing environment-friendly chemical conversion treatment process is difficult to meet the requirements of anti-scratch, Fingerprint performance and other issues, its construction is simple and easy to maintain
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The specific implementation method of the present invention is described in detail below, but not limited:
[0028] The marine aluminum alloy anti-scratch and anti-fingerprint chromium-free chemical conversion liquid of the present invention includes titanium salt, zirconium salt, silicon compound, accelerator, surfactant, etc., and the solvent is water. The anti-scratch and anti-fingerprint chrome-free chemical conversion fluid for marine aluminum alloy is uniformly mixed with titanium salt, zirconium salt, silicon compound, accelerator, pH regulator, surfactant and water. A pH regulator is used to adjust the pH value of the chromium-free chemical conversion solution to 1.0-5.0, preferably 2.0-4.5, most preferably 2.5-3.5.
[0029] Using the anti-scratch and anti-fingerprint chromium-free chemical conversion liquid for marine aluminum alloy, the film-forming process steps of the chromium-free and phosphorus-free nanoscale chemical conversion film include: degreasing→wa...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the field of aluminum alloy decoration and protection coatings for ships, in particular to an aluminum alloy scratch resistant and fingerprint resistant chromium-free chemical conversion solution for a ship and application of the aluminum alloy scratch resistant and fingerprint resistant chromium-free chemical conversion solution to a chemical conversion film. The chemical conversion solution contains titanium salts, zirconium salts, a silicon compound, an accelerator, a surfactant and the balance water, wherein the concentration of the titanium salts in the chromium-free chemical conversion solution ranges from 0.02 to 10g / L; the concentration of the zirconium salts in the chromium-free chemical conversion solution ranges from 0.1-10 g / L; the concentration of thesilicon compound in the chromium-free chemical conversion solution ranges from 2 to 25g / L; the concentration of the accelerator in the chromium-free chemical conversion solution ranges from 0.5-12 g / L; and the concentration of the surfactant in the chemical conversion solution ranges 0.1 to 10g / L. Chemical conversion films are formed on the surfaces of 5xxx or 6xxx series aluminum alloys by adopting an impregnating, brush coating, roller coating or spraying mode; and the chemical conversion films have favorable corrosion resistance, scratch resistance and fingerprint resistance and can be used as the surface decoration and protection coating of the aluminum alloy for the ship.
Description
technical field [0001] The invention relates to the field of marine aluminum alloy decoration and protective coatings, in particular to a marine aluminum alloy environment-friendly anti-scratch, fingerprint-resistant chromium-free chemical conversion liquid and its application in chemical conversion film (ie: preparation of chemical conversion film method). Background technique [0002] 5xxx and 6xxx aluminum alloys have been widely used in ship structural materials in recent years due to their good corrosion resistance, weldability and mechanical properties. Since the oxide film formed spontaneously by aluminum alloy is relatively thin, it cannot meet the requirements of use in harsh environments such as oceans. Due to the erosion of seawater and hot and humid marine atmosphere, the exposed aluminum alloy surface will be corroded and corrosion pits will appear, and a gravel-like white powdery corrosion product will be formed on the entire surface, which will seriously affe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34C23C22/73
CPCC23C22/34C23C22/73
Inventor 管勇刘斌张君男严川伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI