Method for preparing anticorrosion wear-resisting iron-based amorphous coating through laser cladding technology

An iron-based amorphous and laser cladding technology, which is applied in the field of coating materials prepared by laser processing technology, can solve the problems of poor comprehensive performance of anti-corrosion and wear resistance, uneven structure, holes and cracks, etc., and achieve excellent comprehensive performance of corrosion resistance , Uniform structure, no cracks and hole defects

Inactive Publication Date: 2017-06-20
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the disadvantages of current laser cladding iron-based amorphous coatings that are prone to holes and cracks, easy to crack, uneven structure, and poor comprehensive performance of anti-corrosion and wear-...

Method used

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  • Method for preparing anticorrosion wear-resisting iron-based amorphous coating through laser cladding technology
  • Method for preparing anticorrosion wear-resisting iron-based amorphous coating through laser cladding technology
  • Method for preparing anticorrosion wear-resisting iron-based amorphous coating through laser cladding technology

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Experimental program
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Embodiment 1

[0029] Example 1: The chemical composition of the Fe-based amorphous alloy powder is: Cr: 17.3-19.4%; Mn: 1.8-2.2%; Mo: 12.9-15.8%; W: 5.0-6.2%; B: 2.8-4.1% ; C: 0.7-1.1%; Si: 1.0-1.5%; the rest is Fe; (mass percentage), the total mass satisfies 100%.

[0030] Iron-based amorphous powder was prepared by high-frequency vacuum induction furnace (graphite crucible) and close-coupled gas atomization powder making equipment. Vacuum the high-frequency vacuum induction furnace cavity to 10 -2 Below Pa, the metals Fe, Cr, Mn, Mo, W, B, C and Si are weighed and prepared according to the nominal mass fraction, and then put into a graphite crucible, and cast after they are fully melted and uniform. To ensure uniform distribution of elements, remelt the ingot once. Put the ingot into the alumina crucible and place it together in a vacuum chamber, evacuate to 5Pa and heat up. After the alloy is fully melted, atomize at a superheat of 100°C. The atomization medium used is argon. The air ...

Embodiment 2

[0040] Embodiment 2: The differences between this embodiment and Embodiment 1 are: the single-pass laser cladding process parameters are 2000W, the spot width is 6mm, and the scanning speed is 10mm / s. Others are the same as Embodiment 1. Under the process conditions, the amorphous coating can be obtained with a dense coating structure, no cracks and hole defects, good bonding between the substrate and the cladding layer, and no significant change in wear resistance and corrosion resistance.

Embodiment 3

[0041] Embodiment 3: The differences between this embodiment and Embodiment 1 are: the process parameters of single-pass laser cladding are 2000W, the spot width is 8mm, and the scanning speed is 8mm / s. Others are the same as Embodiment 1. Under the process conditions, the amorphous coating can be obtained with a dense coating structure, no cracks and hole defects, good bonding between the substrate and the cladding layer, and no significant change in wear resistance and corrosion resistance.

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Abstract

The invention relates to a method for preparing an anticorrosion wear-resisting iron-based amorphous coating through a laser cladding technology. Chemical components of Fe-based amorphous alloy powder comprise, by mass percent, 17.3% to 19.4% of Cr, 1.8% to 2.2% of Mn, 12.9% to 15.8% of Mo, 5.0% to 6.2% of W, 2.8% to 4.1% of B, 0.7% to 1.1% of C, 1.0% to 1.5% of Si and the balance Fe, wherein the total mass is 100%. The industrial pure raw materials and the tight coupling gas atomization technology are adopted for preparing the iron-based amorphous alloy with the components into powder stock, and the single-pass diode laser cladding technology is used for preparing the amorphous alloy coating. The preparing technology of the iron-based amorphous coating approaches to the actual industrial level, the technology condition is controllable, the cost is low, the beneficial effects of being compact in structure, uniform in structure, free of crack and hole defects, high in hardness, anti-corrosion, resistant to wear and the like are achieved, and the great utilization potentiality is achieved in the national defense industry.

Description

technical field [0001] The invention relates to a method for preparing a laser cladding anti-corrosion and wear-resistant iron-based amorphous coating, which belongs to the field of coating materials prepared by laser processing technology. Background technique [0002] Due to its low cost and excellent mechanical, corrosion resistance, soft magnetic, electrical and other properties, iron-based amorphous alloys have attracted much attention from the scientific community and are expected to become key materials for high-tech aerospace devices, precision machinery, and military industries. However, due to the limitations of the size and preparation process of iron-based amorphous alloys, it is difficult to be widely used in industry. If it is prepared as a coating, it not only has the excellent properties of amorphous, but also breaks through the bulk amorphous alloy material. The size, room temperature brittleness and other shortcomings greatly expand the application range of...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C45/02
CPCC23C24/103C22C45/02
Inventor 孙亚娟雷剑波王安苏王植赵冬梅宋丽娟
Owner TIANJIN POLYTECHNIC UNIV
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