High-entropy alloy coating preparation technology of tool die

A high-entropy alloy and preparation process technology, applied in metal material coating process, coating, ion implantation plating, etc. The effect of improved toughness and high temperature stability

Inactive Publication Date: 2013-06-26
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently commonly used coating materials are TiC, TiN, Ti(C,N), and TiAlN series. Although this type of coating has good high temperature stability and high bonding strength with the substrate, the hardness and wear resistance of t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this example, firstly, nickel (Ni), cobalt (Co), iron (Fe), chromium (Cr), and titanium (Ti) are prepared in an equimolar ratio to prepare a NiCoFeCrTi high-entropy alloy material, and NiCoFeCrTi high-entropy alloy material is prepared in the configuration. For entropy alloy materials, the vacuum arc melting method is used to repeatedly melt 4 to 5 times for preparation.

[0019] Then, using the NiCoFeCrTi high-entropy alloy material and a single element material as target materials, a high-entropy alloy nitride film coating is sputtered on a hard alloy substrate by radio frequency magnetron sputtering. This process can be tried in different Under the parameters of power, substrate temperature and different nitrogen flow rates, the specific parameter data can be obtained through a limited number of experiments; in this embodiment, the single element material is molybdenum (Mo), and the high-entropy alloy nitride film coating The layer is (NiCoFeCrTi) x Mo y N, wher...

Embodiment 2

[0023] In this example, firstly, nickel (Ni), cobalt (Co), iron (Fe), chromium (Cr), and titanium (Ti) are prepared in an equimolar ratio to prepare a NiCoFeCrTi high-entropy alloy material, and NiCoFeCrTi high-entropy alloy material is prepared in the configuration. For entropy alloy materials, the vacuum arc melting method is used to repeatedly melt 4 to 5 times for preparation.

[0024] Then, using the NiCoFeCrTi high-entropy alloy material and a single element material as target materials, a high-entropy alloy nitride film coating is sputtered on a hard alloy substrate by radio frequency magnetron sputtering. This process can be tried in different Under the parameters of power, substrate temperature and different nitrogen flow rates, the specific parameter data can be obtained through a limited number of experiments; in this embodiment, the single element material is aluminum (Al), and the high-entropy alloy nitride film coating The layer is (NiCoFeCrTi) x al y N, where ...

Embodiment 3

[0029] In this example, firstly, nickel (Ni), cobalt (Co), iron (Fe), chromium (Cr), and titanium (Ti) are prepared in an equimolar ratio to prepare a NiCoFeCrTi high-entropy alloy material, and NiCoFeCrTi high-entropy alloy material is prepared in the configuration. For entropy alloy materials, the vacuum arc melting method is used to repeatedly melt 4 to 5 times for preparation.

[0030] Then, using the NiCoFeCrTi high-entropy alloy material and a single element material as target materials, a high-entropy alloy nitride film coating is sputtered on a hard alloy substrate by radio frequency magnetron sputtering. This process can be tried in different Under the parameters of power, substrate temperature and different nitrogen flow rates, the specific parameter data can be obtained through a limited number of experiments; in this embodiment, the single element material is silicon (Si), and the high-entropy alloy nitride thin film coating The layer is (NiCoFeCrTi) x Si y N, wh...

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Abstract

The invention provides a high-entropy alloy coating preparation technology of a tool die, which comprises the following steps of: preparing a NiCoFeCrTi high-entropy alloy material from Ni, Co, Fe, Cr and Ti at an equimolar proportion; sputtering a high-entropy alloy nitride film coating on a hard alloy base body by a radio-frequency magnetron sputtering method by taking the NiCoFeCrTi high-entropy alloy material and a single element material as target materials; and finally, putting the high-entropy alloy nitride film coating in an air atmosphere furnace, oxidizing at 500-1,000 DEG C in the air atmosphere furnace for 1 hour, introducing nitrogen and performing heat treatment at 500-1,000 DEG C for 1 hour. The high-entropy alloy coating preparation technology of a tool die provided by the invention obviously improves the hardness, wear resistance and toughness of the coating while guaranteeing good high-temperature stability of the coating and high binding strength with the base body.

Description

technical field [0001] The invention relates to a coating preparation technology on a tool and mold, in particular to a preparation technology of a high-entropy alloy coating on a tool and mold. Background technique [0002] In recent years, difficult-to-machine materials, molds, and some products have no cutting fluid processing requirements, resulting in high-speed cutting, heavy cutting, and processing environments where the temperature of the workpiece heats up very quickly. Damage and serious wear of the mold surface, etc., reduce the service life of the tool and mold, and the surface roughness of the tool and mold is very poor. [0003] In recent years, tool and mold coating technology has developed rapidly. The combination of tool and mold materials and nanostructure coating technology has further expanded the processing range of tools. Coated tool and mold materials are high-speed cutting, hard cutting, dry cutting and repeated friction and wear. create conditions f...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/35C23C14/58
Inventor 李荣斌孙勇毅汪龙
Owner SHANGHAI UNIV
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