Titanium Nitride/CuTi Intermetallic Enhanced Coatings for Copper Surfaces

A technology of intermetallic compounds and titanium nitride, which is applied in the coating process and coating of metal materials, can solve the problems of poor surface mechanical properties and wear resistance, and achieve the goal of improving the wear resistance and hardness of copper surfaces and high practical value Effect

Active Publication Date: 2018-08-31
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a layer of nitrogen arc cladding on the surface of red copper with TiN and Cu x Ti y To enhance the wear-resistant coating material of the phase, on the basis of ensuring the overall electrical and thermal conductivity of the component, it can solve the problem of poor mechanical properties of the surface of the copper component, especially the poor wear resistance, and can be used for the repair and remanufacturing of the copper component

Method used

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  • Titanium Nitride/CuTi Intermetallic Enhanced Coatings for Copper Surfaces
  • Titanium Nitride/CuTi Intermetallic Enhanced Coatings for Copper Surfaces
  • Titanium Nitride/CuTi Intermetallic Enhanced Coatings for Copper Surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] When the titanium powder in the pre-coating powder is 10%, the cladding layer is two phases of TiN and α-Cu:

[0049] In this example, a wear-resistant coating with TiN as the reinforcing phase was prepared on the surface of a copper specimen of 100mm×50mm×10mm.

[0050] (1) Mix pure copper powder with a purity of 99.9% and 150 meshes and titanium powder with a purity of 99.99% and 200 meshes according to the ratio of 9:1. The total weight of the powder is 5g. Planetary ball mill, grind for 30 minutes, set aside.

[0051] (2) Mix 150-mesh low-carbon ferromanganese powder and 150-mesh ferrosilicon powder in a ratio of 1:1, the total weight of the powder is 2g, place the mixed powder in a planetary ball mill protected by an argon atmosphere, and grind for 10 minutes Mix powder and set aside. The low-carbon ferromanganese powder includes 0.2% carbon, 85%-92% manganese, 5%-13% iron, and the remainder is impurities. The ferrosilicon powder includes 74%-80% of silicon, 14%...

Embodiment 2

[0060] When the titanium powder in the pre-coated powder is 20%, the cladding layer is Ti 2 Three phases of Cu·TiN, TiN and α-Cu:

[0061] In this example, Ti was prepared on the surface of a copper specimen of 100mm×50mm×10mm 2 Cu · TiN-TiN enhanced copper-based wear-resistant coating.

[0062] (1) Mix pure copper powder with a purity of 99.9%, 150 mesh and titanium powder with a purity of 99.99%, 200 mesh according to the ratio of 8:2. The total weight of the powder is 5g. Planetary ball mill, grind for 35 minutes, set aside.

[0063] (2) Mix 150-mesh low-carbon ferromanganese powder and 150-mesh ferrosilicon powder in a ratio of 1:1, the total weight of the powder is 2g, place the mixed powder in a planetary ball mill protected by an argon atmosphere, and grind for 10 minutes Mix powder and set aside. The low-carbon ferromanganese powder includes 0.2% carbon, 85%-92% manganese, 5%-13% iron, and the remainder is impurities. The ferrosilicon powder includes 74%-80% of si...

Embodiment 3

[0072] When the titanium powder in the pre-coated powder is 70%, the cladding layer is TiN, Ti 2 Cu·TiN, CuTi, Cu 4 Ti 3 Four-phase and matrix α-Cu.

[0073] In this example, Ti was prepared on the surface of a copper specimen of 100mm×50mm×10mm 2 Cu·TiN, TiN and copper-titanium compound CuTi, Cu 4 Ti 3 Enhanced copper-based wear-resistant coatings.

[0074] (1) Mix pure copper powder with a purity of 99.9%, 150 mesh and titanium powder with a purity of 99.99%, 200 mesh according to the ratio of 3:7, the total weight of the powder is 5g, and place the mixed powder in an argon atmosphere protection Planetary ball mill, grind for 45 minutes, set aside.

[0075] (2) Mix low-carbon ferromanganese powder with a purity of 90% and 150 meshes and ferrosilicon powder with a purity of 75% and 150 meshes in a ratio of 1:1. The total weight of the powders is 2g. Place the mixed powders in an argon atmosphere Protected planetary ball mill, mixed powder for 10 minutes, stand-by. The...

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Abstract

The invention provides a wear-resistant coating material with a layer of nitrogen arc cladding on the surface of red copper, which uses titanium nitride and copper-titanium intermetallic compound as a reinforcing phase, which avoids the decline in thermal and electrical conductivity caused when the whole composite material is used to replace red copper. , and enhance the hardness and friction and wear properties of the surface, so that the surface properties and overall electrical and thermal conductivity of the material meet the requirements of use, and can be used for the repair and remanufacturing of copper components. A tungsten nitrogen arc welding machine is used to pre-coat a certain proportion of titanium powder, copper powder and deoxidizer powder on the surface of red copper. Under the action of nitrogen arc heat source, the copper surface is reacted to form titanium nitride / copper-titanium intermetallic compound reinforced copper. base composite coating. By adjusting the ratio of copper-titanium powder and argon-nitrogen gas, the form and quantity of titanium nitride in the cladding layer, the type and quantity of copper-titanium reactants can be effectively controlled, and then the hardness of the cladding layer can be changed and the friction coefficient can be adjusted. , to meet the needs of various working conditions.

Description

technical field [0001] The invention specifically relates to a copper-based composite material coating for in-situ generation of titanium nitride / copper-titanium intermetallic compounds for nitrogen arc cladding on the surface of red copper. Background technique [0002] Copper is a metal closely related to human production and life, and its consumption of non-ferrous metal materials in my country is second only to aluminum. Copper and copper alloys have good mechanical properties, excellent process performance, easy casting, plastic processing, etc., and more importantly, copper and copper alloys have good corrosion resistance, thermal conductivity, electrical conductivity, mechanical properties and moderate prices, so they are It can be widely used in industrial fields such as electronics, machinery manufacturing, etc. However, the deficiency of copper in many aspects such as room temperature strength, high temperature performance and wear resistance restricts wider appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 李一楠彭子龙郭峰张磊刘贤宝周志康
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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