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Containing la, ce, pr and nd scale-like multi-element aluminum-zinc-silicon alloy powder and its preparation method

A scale-shaped, zinc-aluminum alloy technology, applied in the field of scale-shaped multi-element aluminum-zinc-silicon alloy powder and its preparation, can solve the problem of restricting the industrialization process of chromium-free zinc-aluminum coating technology, affecting the use range and quality of metal powder, metal The powder is easy to oxidize and other problems, and achieves the effect of high flake degree, cost reduction and improved anti-corrosion performance

Active Publication Date: 2016-03-02
JIANGSU LINLONG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drying process of the above-mentioned wet grinding method is complicated, the cycle is long, the efficiency is low, and the metal powder is easy to oxidize. What is more serious is that the dried metal powder will leave a part of the medium, which will affect the use range and quality of the metal powder.
However, the dry grinding process requires long-term stirring and dispersion, which increases energy consumption, and the shape and performance of the ultrafine zinc powder and aluminum powder produced by the dry grinding process are far behind the powders required by the Dacromet process. Thereby limiting the process of industrialization of chromium-free zinc-aluminum coating technology

Method used

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  • Containing la, ce, pr and nd scale-like multi-element aluminum-zinc-silicon alloy powder and its preparation method
  • Containing la, ce, pr and nd scale-like multi-element aluminum-zinc-silicon alloy powder and its preparation method
  • Containing la, ce, pr and nd scale-like multi-element aluminum-zinc-silicon alloy powder and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 10Kg of 300-mesh aluminum-zinc-silicon alloy powder raw material, 0.4Kg of zinc stearate, and 200Kg of steel balls into the ball mill. After vacuuming, nitrogen is introduced, and cooling water is connected to ensure that the temperature during the ball milling process is between 30-40°C. . After ball milling at a speed of 50r / min for 10 hours, the material is discharged, and the ball milled powder is put into a polishing machine for polishing. The polished powder is classified to obtain flake Al-Zn-Si alloy powder.

Embodiment 2

[0045] Get 10Kg of 200-mesh aluminum-zinc-silicon alloy powder raw material, 0.1Kg of polyvinyl alcohol, 0.2Kg of calcium stearate, and 120Kg of steel balls and put them into the ball mill. Between 30-40°C, ball mill at a speed of 100r / min for 14 hours to discharge the material, put the ball-milled powder into a polishing machine for polishing, and classify the polished powder to obtain flake-shaped aluminum-zinc-silicon alloy powder.

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Abstract

The invention relates to La, Ce and Pr-contained scaly-shaped multielement Al-Zn-Si alloy powder and a preparation method thereof. The scaly-shaped multielement Al-Zn-Si alloy powder has the sheet thickness of 0.1-1mu m, and the average sheet diameter of 5-35mu m; the concrete composition of the particle size is: the particles with the sheet diameter smaller than 5mu m are not more than 20%, the particles with the sheet diameter being 5-33mu m are more than or equal to 70%, the particles with the sheet diameter of larger than 33mu m is not more than 10%, and the ratio of the average sheet diameter to the sheet thickness of the scaly-shaped multielement Al-Zn-Si alloy powder is 35-200. The scaly-shaped metal powder and the preparation method disclosed by the invention are particularly suitable for the production fields of Dacromet coating liquid, inorganic Zn-rich paint, heavy anticorrosive paint and the like.

Description

technical field [0001] The invention relates to a scaly multi-element aluminum-zinc-silicon alloy powder and a preparation method thereof. Background technique [0002] Dacromet technology was first born in the late 1950s. It is a metal coating treatment technology similar to electrogalvanizing. Mike Martin, an American scientist, developed a metal zinc flake and added aluminum flake, chromic acid, Highly dispersed water-soluble paint with deionized water as a solvent, the paint sticks to the metal substrate, and is coated and baked in a fully closed circuit to form a thin coating. Dacromet coating successfully resists the erosion of chloride ions, and the anti-corrosion technology has entered a new level, which has innovated the defect of short anti-corrosion life of the traditional process. The appearance of Dacromet coating is uniform silver gray. The coating contains 80% thin zinc flakes and aluminum flakes, and the rest is chromate. It has excellent properties, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04C22C21/10C22C18/04C22C30/06
Inventor 冯立新张敏燕魏小昕蒋穹陈竺
Owner JIANGSU LINLONG NEW MATERIALS CO LTD
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