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A method for preparing iron-based amorphous and nanocrystalline coatings
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An iron-based amorphous and nanocrystalline technology, which is applied in coating, metal material coating process, transportation and packaging, etc., can solve the problems of unstable coating quality and high preparation cost, and achieve low price advantage and low equipment price , the effect of simple operation
Active Publication Date: 2020-02-04
无锡海韵新材料科技有限公司
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[0003] The purpose of the present invention is to provide a method for preparing iron-based amorphous and nanocrystalline coatings in order to overcome the problems of high preparation cost and unstable coating quality in the prior art
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specific Embodiment approach 1
[0012] Specific embodiment 1: This embodiment records a method for preparing iron-based amorphous and nanocrystalline coatings, using elemental powder iron powder, chromium powder, boron powder, silicon powder, and niobium powder as raw materials. The ratio of mass parts of powder, chromium powder, boron powder, silicon powder, niobium powder is (64-2X): 13: (2X+16): 3: 4, where X is 1, 2 or 3, and all simple powders Put the cemented carbide balls into the ball milling tank for ball milling, mix them thoroughly, and use argon for protection during the milling process; add organic binder to the uniformly mixed elemental powder and hard metal balls, the amount of organic binder added To add 10g of organic binder to every 100g of elemental powder, use a cylindrical mold (using the YQ32-250t powder molding hydraulic press produced by Nantong Davao Heavy Industry Machine Tool Co., Ltd.) to press the alloy powder into a rod shape to obtain a composite rod. After natural drying at roo...
specific Embodiment approach 2
[0013] Specific embodiment 2: The method for preparing iron-based amorphous and nanocrystalline coatings described in specific embodiment 1, wherein the purity of the iron powder is 99.0%, and the particle size is 325 mesh; the purity of niobium powder is 99.9%, and the particle size is 500 The purity of boron powder is 99.99% and the particle size is 180 mesh; the purity of chromium powder is 99.95% and the particle size is 325 mesh; the purity of silicon powder is 99.95% and the particle size is 300 mesh.
specific Embodiment approach 3
[0014] Specific embodiment three: specific embodiment one of the method for preparing iron-based amorphous and nanocrystalline coatings, the grinding ball in the ball milling tank is zirconia, the diameter of the grinding ball is 10mm, and the ball to material ratio is 20 :1, The ball milling speed is 300r / min, the ball milling time is 5h, the protective gas is high-purity argon, and the purity can reach 99.99%.
[0015] Embodiment 4: In the method for preparing iron-based amorphous and nanocrystalline coatings described in Embodiment 1, the organic binder is glue or water glass.
[0016] Specific embodiment 5: Specific embodiment 1 In the method for preparing iron-based amorphous and nanocrystalline coatings, the metal substrate is low carbon steel, medium carbon steel or low alloy steel.
[0017] Specific embodiment six: specific embodiment one of the method for preparing iron-based amorphous and nanocrystalline coatings, the cladding process, the parameters are: cladding current: ...
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Abstract
A method for preparing iron-based amorphous and nanocrystalline coatings belongs to the technical field of metal surface engineering. The method uses elemental powder iron powder, chromium powder, boron powder, silicon powder, and niobium powder as raw materials, puts the powder and hard alloy balls into a ball mill pot for ball milling, mixes them well, then adds an organic binder, and uses a cylindrical Shaped mold, pressed into a rod shape to obtain a composite material rod, after natural drying at room temperature, then use a drying oven to dry, and then use the arc heat generated by the tungsten electrode of the argon arc welding machine to clad the composite material rod on the metal placed in the low temperature tank On the surface of the substrate, iron-based amorphous and nanocrystalline coatings can be obtained after solidification. The coating of the present invention combines well with the metal substrate, and the distribution of nanocrystalline particles is uniform; the technology is simple, easy to operate, and low in equipment price; compared with amorphous and nanocrystalline coatings prepared by laser cladding, argon arc cladding composite The preparation of amorphous and nanocrystalline coatings from material rods has the characteristics of simple operation, high powder utilization rate, and reduced production costs.
Description
Technical field [0001] The invention belongs to the technical field of metal surface engineering, and specifically relates to a method for preparing iron-based amorphous and nanocrystalline coatings. Background technique [0002] The loss caused by material wear and corrosion is as high as 9.5% of the total output value of the national economy. Using surface engineering technology to obtain amorphous and nanocrystalline coatings on the surface of traditional materials can significantly improve the wear resistance and corrosion resistance of materials, and its application potential is huge. It has become a research hotspot in the field of surface engineering technology. Iron-based amorphous and nanocrystalline coatings are widely used in petroleum, natural gas, chemical, hydropower, nuclear power, and automobiles due to their corrosion resistance, cavitation resistance, wear resistance, low friction coefficient, strong machinability, and low cost. , Mining machinery, marine engin...
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