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Titanium nitride/copper-titanium intermetallic compound reinforced coating for surface of red copper

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: 2017-02-15
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/copper-titanium intermetallic compound reinforced coating for surface of red copper
  • Titanium nitride/copper-titanium intermetallic compound reinforced coating for surface of red copper
  • Titanium nitride/copper-titanium intermetallic compound reinforced coating for surface of red copper

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 present invention provides a wear-resistant coating material with titanium nitride and a copper-titanium intermetallic compound as an reinforcement phase that is formed on the surface of red copper through nitrogen arc fusion cladding. The degradation of the thermal conductivity and the electrical conductivity due to the use of an integrated composite instead of the red copper is avoided, and the hardness and the frictional wear resistance of the surface are also enhanced; as a result, the surface properties and the integrated electrical and thermal conductivity of the material can meet the use requirements, and the material can be used for repair and reproduction of the red copper. A tungsten electrode nitrogen arc welding machine is used; the red copper is pre-coated with a titanium powder, a copper powder and a desoxidant powder in a certain ratio; under the action of a nitrogen arc heat source, the powders are reacted on the surface of the red copper to generate a titanium nitride / copper-titanium intermetallic compound reinforced copper-based composite coating. The existence form and quantity of the titanium nitride and the types and quantity of copper and titanium reactants in the cladding layer may be effectively controlled by adjusting the ratio of the copper and titanium powders and the ratio of argon and nitrogen gases; thus, the purposes of changing the hardness of the cladding layer and adjusting the friction coefficient are achieved to meet the requirements of various operating 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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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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