Ultrafine zinc alloy powder and preparation method thereof

A zinc alloy and powder technology, applied in the field of ultra-fine zinc alloy powder and its preparation, can solve the problems that the corrosion resistance of pure zinc powder can not meet the development requirements of coatings, the particle size of zinc powder is large, the thickness is uneven, etc. Effects of surface activation energy, grain refinement, and improved corrosion and oxidation resistance

Active Publication Date: 2015-10-14
JIANGSU YEJIAN ZINC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultra-fine zinc powder produced by high-energy ball milling is in the shape of scales, but it is easy to pollute
The process proposed in Chinese patents CN1450182A and CN1482263A has promoted the large-scale production of the alkaline electrolytic zinc powder process, but the particle size of the zinc powder produced by this process is relatively large, and the thickness is uneven, and the preparation of ultra-fine zinc powder needs to be ground by a ball mill , high energy consumption, complex process
[0005] However, the technical problem of using pure zin...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An ultrafine zinc alloy powder, the particle size range of the ultrafine zinc alloy powder is 1 to 100nm; the mass composition of the zinc alloy is as follows:

[0038]Nickel: 0.80wt%; Antimony: 0.15wt%; Cobalt: 0.05wt%; Lanthanum: 0.25wt%; Cerium: 0.25wt%; Gadolinium: 0.15wt%; Indium: 100ppm; 200ppm; the balance is zinc.

[0039] The particle size range of the ultrafine zinc alloy powder is as follows: 1nm20nm zinc alloy powder accounts for the total 40wt%-60wt% of the zinc alloy powder, and the rest is zinc alloy powder with 100nm≥particle size>80nm.

[0040] The concrete steps of the preparation method of above-mentioned superfine zinc alloy powder are as follows:

[0041] Step 1. Preparation of nano-zinc powder: first place the nano-zinc oxide powder in the reduction furnace, and after sealing, pass in CO and H produced by catalytic cracking of methanol at 80-100ml / min 2 , then raise the temperature to 410°C-450°C for 50-60 minutes, and obtain high-purity nano-zi...

Embodiment 2

[0050] An ultrafine zinc alloy powder, the particle size range of the ultrafine zinc alloy powder is 1 to 100nm; the mass composition of the zinc alloy is as follows:

[0051] Nickel: 0.60wt%; Antimony: 0.10wt%; Cobalt: 0.15wt%; Lanthanum: 0.35wt%; Cerium: 0.15wt%; Gadolinium: 0.05wt%; Indium: 300ppm; 100ppm; the balance is zinc.

[0052] Its preparation method is identical with embodiment one.

[0053] The prepared above-mentioned ultrafine zinc alloy powder is used as an additive for coating.

Embodiment 3

[0055] An ultrafine zinc alloy powder, the particle size range of the ultrafine zinc alloy powder is 1 to 100nm; the mass composition of the zinc alloy is as follows:

[0056] Nickel: 0.70wt%; Antimony: 0.12wt%; Cobalt: 0.10wt%; Lanthanum: 0.30wt%; Cerium: 0.20wt%; Gadolinium: 0.10wt%; Indium: 200ppm; 150ppm; the balance is zinc.

[0057] Its preparation method is identical with embodiment one.

[0058] The prepared above-mentioned ultrafine zinc alloy powder is used as an additive for coating.

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Abstract

The invention provides a ultrafine zinc alloy powder and a preparation method thereof, wherein the particle size range of the ultrafine zinc alloy powder is 1-100nm. The ultrafine zinc alloy powder comprises light rare earth element lanthanum, cerium and heavy rare earth element gadolinium, wherein the light rare earth element lanthanum, and the cerium and the heavy rare earth element gadolinium can restrain crystal particles to grow on one hand and form a fine crystal particle grain boundary strengthening mechanism, can play the role of degassing and removing impunities on the other hand, thereby reducing damage to alloy. Simultaneously, less nickel, cobalt and stibium are added into the ultrafine zinc alloy powder, can obviously improve anti-corrosion and oxidation resistance. Trace amount of indium, bismuth, aluminum and calcium metal are added into the ultrafine zinc alloy powder, and the alloy performance of the ultrafine zinc alloy powder is enhanced. The ultrafine zinc alloy powder does not comprise poisonous and harmful elements such as mercury, lead and cadmium, can not cause environment pollution and ecological damage, and is green and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal alloy powder materials, and in particular relates to an ultrafine zinc alloy powder and a preparation method thereof, which are mainly used as an additive for paint. Background technique [0002] Zinc powder is an important industrial raw material with great market demand. It is widely used in metallurgy, chemical industry, construction, transportation, medicine, electronics and other fields. The production methods of zinc powder include atomization method and evaporation condensation method. Preparation of zinc powder by atomization methods, such as air jet atomization and hydraulic jet atomization, has low product recovery rate, high power consumption, and problems such as uneven particles. At present, the method of domestic industrialized production of zinc powder is mostly based on the evaporation condensation method, with coal, gas or electricity as the energy source, and the zinc i...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/22C22C18/00C09D5/10B82Y30/00B82Y40/00
Inventor 史建群史优良韩顺英黄秉慧张出波唐踉
Owner JIANGSU YEJIAN ZINC IND CO LTD
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