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A method for preparing metallic glass coating by electric spark deposition process

A technology of electric discharge deposition and metallic glass, which is applied in coating and metal material coating technology, etc., can solve the problems of low glass forming ability and difficult preparation, and achieve the effect of flexible use, simple equipment and convenient portability

Active Publication Date: 2017-12-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the problem that nickel-based amorphous alloys are difficult to prepare metallic glass coatings due to their low glass-forming ability, and obtained nickel-based metallic glass coatings with high amorphous phase content, high hardness, high density, and good bonding with the substrate

Method used

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  • A method for preparing metallic glass coating by electric spark deposition process
  • A method for preparing metallic glass coating by electric spark deposition process
  • A method for preparing metallic glass coating by electric spark deposition process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of Ni on Ti-Ni Matrix Alloy 53 Nb 20 Ti 10 Zr 8 co 6 Cu 3 coating

[0056] The equipment used is SparkDepo MODEL500 type electric spark deposition equipment; the working parameters are set as: voltage 50V, capacitance 80μF, discharge frequency 2000Hz, and then turn on the discharge switch, so that the front electrode of the welding torch is in slight contact with the substrate, and spark discharge is generated between the two. The electrode material is melted and sputtered onto the surface of the substrate to form "coating spots"; while the welding torch and the substrate maintain relative motion during the discharge, the "coating spots" form continuous coatings through connection and superposition. When working, the electrode rotates at a speed of 800 revolutions per second under the action of the chuck's rotation, and at the same time, a protective gas flows through the protective cover; the flow rate of the protective gas is 25 milliliters per second...

Embodiment 2

[0059] Preparation of Ni on Ti-Ni Matrix Alloy 61.5 Nb 33.5 Zr 5 coating

[0060] The equipment used is SparkDepo MODEL500 type electric spark deposition equipment; the working parameters are set as: voltage 65V, capacitance 35μF, discharge frequency 2000Hz, and then turn on the discharge switch, so that the front electrode of the welding torch is in slight contact with the substrate, and spark discharge is generated between the two. The electrode material is melted and sputtered onto the surface of the substrate to form "coating spots"; while the welding torch and the substrate maintain relative motion during the discharge, the "coating spots" form continuous coatings through connection and superposition. When working, the electrode rotates at a speed of 500 revolutions per second under the action of the chuck, and at the same time, a protective gas flows through the protective cover; the flow rate of the protective gas is 75 milliliters per second.

[0061] After 5 passes...

Embodiment 3

[0063] Preparation of Ni on Ti-Ni Matrix Alloy 61.5 Nb 33.5 Zr 5 coating

[0064] The equipment used is SparkDepo MODEL500 type electric spark deposition equipment; the working parameters are set as: voltage 150V, capacitance 10μF, discharge frequency 2000Hz, and then turn on the discharge switch, so that the front electrode of the welding torch is in slight contact with the substrate, and spark discharge is generated between the two. The electrode material is melted and sputtered onto the surface of the substrate to form "coating spots"; while the welding torch and the substrate maintain relative motion during the discharge, the "coating spots" form continuous coatings through connection and superposition. When working, the electrode rotates at a speed of 800 revolutions per second under the action of the chuck's rotation, and at the same time, a protective gas flows through the protective cover; the flow rate of the protective gas is 25 milliliters per second.

[0065] Af...

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Abstract

The invention relates to a method for preparing a metal glass coating by utilizing an electrical sparkle deposition process and belongs to the technical field of metal glass coating preparation. A metal A serves as an anode, an electric conductor where a metal A glass coating is pre-deposited serves as a cathode; in the preparation process, when the voltage is 50-60 V, the control capacitance is 40-200 [mu] F, the discharge frequency is 1000-2000 Hz, and the cooling velocity of an anode nickel base alloy deposited on the cathode is controlled to be 105-106 K / s; when the voltage is 61-99 V, the control capacitance is 20-39.9 [mu] F, the discharge frequency is 1000-2000 Hz, and the cooling velocity of a cathode nickel base alloy deposited on the cathode is controlled to be 105-106 K / s; when the voltage is 100-150 V, the control capacitance is 5-15 [mu] F, the discharge frequency is 1000-2000 Hz, and the cooling velocity of an anode nickel base alloy deposited on the cathode is controlled to be 105-106 K / s.

Description

technical field [0001] The invention relates to a method for preparing a metallic glass coating by using an electric spark deposition process, belonging to the technical field of metallic glass coating preparation. Background technique [0002] The damage process of materials such as corrosion and wear usually starts on the surface of materials, which can easily lead to engineering accidents and cause huge economic losses. Surface engineering technology can be used to improve the mechanical properties of the material surface such as hardness, wear resistance, corrosion resistance, heat resistance, and fatigue strength, so as to ensure that the material can withstand high-speed, high-temperature, high-pressure, heavy-duty, and strong corrosive medium conditions. Serve reliably. Due to a series of excellent properties, such as high strength, high hardness, good wear resistance and excellent corrosion resistance, amorphous alloys have very broad application prospects in the fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C26/02C22C19/03C22C30/02
CPCC22C19/007C22C19/03C22C27/02C22C30/00C22C30/02C23C26/02
Inventor 李登科刘云龙李文波龙会国
Owner STATE GRID CORP OF CHINA
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