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AlNbCN multielement gradient composite coating tool and preparing method thereof

A composite coating and gradient technology, applied in coating, metal material coating process, ion implantation plating, etc.

Active Publication Date: 2017-11-10
JINING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the performance and preparation methods of existing carbonitride coating tools, and provide a kind of AlNbCN multi-component gradient composite coating tool and its preparation method in combination with the advantages of multi-component composite coating structure

Method used

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  • AlNbCN multielement gradient composite coating tool and preparing method thereof

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Embodiment 1

[0022] An AlNbCN multi-element gradient composite coating tool and a preparation method thereof, the tool is an ordinary machine tool blade, its base material is: cemented carbide P30, and the deposition method is a composite coating method of intermediate frequency magnetron sputtering + arc plating , 2 intermediate frequency magnetron sputtering AlNbC composite targets and 2 arc plating Ti targets were used for deposition. First, the Ti transition layer is deposited by arc plating, and then the AlNbC transition layer and the AlNbCN multi-layer gradient composite coating with a gradient nitrogen content are deposited by the intermediate frequency magnetron sputtering method. The specific steps are as follows:

[0023] (1) Pretreatment: Polish the surface of the tool base to remove surface oil, rust and other impurities, then place them in alcohol and acetone in turn, ultrasonically clean them for 25 minutes each, remove oil and other attachments on the tool surface, and dry th...

Embodiment 2

[0030] AlNbCN multi-element gradient composite coating cutter and preparation method thereof of the present invention, this cutter is common twist drill bit, and its cutter base material is: M2 high-speed steel, deposition mode is the composite coating method that adopts intermediate frequency magnetron sputtering and electric arc plating, when depositing Two intermediate frequency magnetron sputtering AlNbC composite targets and two arc plating Ti targets are used. First, the Ti transition layer is deposited by arc plating, and then the AlNbC transition layer and the AlNbCN multi-layer gradient composite coating with a gradient nitrogen content are deposited by the intermediate frequency magnetron sputtering method. The specific steps are as follows:

[0031] (1) Pretreatment: Polish the surface of the tool base to remove surface oil, rust and other impurities, then place them in alcohol and acetone in turn, ultrasonically clean them for 25 minutes each, remove oil and other a...

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Abstract

The invention belongs to the field of machining cutting tools, and relates to an AlNbCN multielement gradient composite coating tool and a preparing method thereof. The coating tool sequentially comprises a tool base body, a Ti transition layer, an AlNbC transition layer and an AlNbCN multielement gradient composite coating with the nitrogen content gradually changing in a gradient manner from interior to exterior, and the coating tool is prepared in a middle-frequency magnetron sputtering and arc plating composite coating method. According to the AlNbCN ultrahard carbohydrates and nitrogenous compound coating, due to the fact that the Al element and the Nb element are added in the coating at the same time, and the content of the nitrogen which is the structure component of the coating gradually changes in a gradient manner, thecutting machining performance of the tool can be improved. The AlNbCN multielement gradient composite coating tool has very high hardness and strength, low surface friction coefficient, good high-temperature oxidization preventing performance and excellent friction abrasion characters. In the cutting process, tool surface friction and cuttings bonding can be reduced through the tool, the cutting force and the cutting temperature can be reduced by 45% or above, the heat stability of the coating tool is improved by 65% or above, the service life of the tool is prolonged by 60% or above, and durability of the tool is improved by 60% or above.

Description

technical field [0001] The invention belongs to the field of mechanically manufacturing metal cutting tools, in particular to an AlNbCN multi-element gradient composite coating tool and a preparation method thereof. Background technique [0002] Cutting tool materials not only need to have high hardness and wear resistance, but also need to have good bending strength and impact toughness. The hard film on the surface of the tool has the following requirements for the material: ① High hardness and good wear resistance; ② Stable chemical properties, no chemical reaction with the workpiece material; ③ Heat resistance and oxidation resistance, low friction coefficient, and firm adhesion to the substrate. With the development of high-speed cutting, the cutting heat generated in the cutting process has much higher wear and tear on the tool than conventional cutting, so the hardness, strength, wear resistance, toughness and impact resistance of the tool material, as well as high re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/32C23C14/35C23C14/06C23C14/16C23C14/18
Inventor 宋文龙崔祥府王首军张璇
Owner JINING UNIV
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