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Preparation method of Cu.TiB nano-diffusion alloy

A cu-tib2 alloy technology, applied in the field of Cu-TiB2 alloy and its preparation, can solve the problems of complex alloy process and difficult process control, and achieve the effects of low preparation cost, easy control and simple production equipment

Inactive Publication Date: 2008-08-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method prepares Cu-Al 2 o 3 The alloy process is quite complicated, including: Cu-Al alloy smelting, powder spraying, oxidant preparation, material mixing, internal oxidation, reduction, cold isostatic pressing, vacuum sintering, sheathing hot extrusion, cold forming, etc. The process is difficult to control. Few domestic and foreign manufacturers can really master its key technologies.

Method used

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  • Preparation method of Cu.TiB nano-diffusion alloy
  • Preparation method of Cu.TiB nano-diffusion alloy
  • Preparation method of Cu.TiB nano-diffusion alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Example 1: The alloy composition is TiB 2 -0.25wt%, the rest is copper and unavoidable impurities. The raw materials for preparing the alloy are Cu-0.34wt% Ti and Cu-0.17wt% B. figure 2 After melting in the two crucibles in the device shown, after overheating to 1350℃, use 2×10 5 Pa of high pressure and high purity N 2 The gas presses the alloy melt into the reaction chamber from the two pipes, so that the two melts react in situ when they collide with each other and mix to form TiB 2 A homogeneous mixture of nanoparticles and pure copper melt. The mixture is quickly condensed by spray deposition. The conditions of spray deposition are: Pressure: 3×10 5 ~6×10 5 Pa, atomizing gas: N 2 Gas to make Cu-TiB 2 The alloy billet is then hot rolled and cold rolled into a thin plate with a thickness of 0.30 mm. The main properties are shown in Table 1. For the sake of comparison, the corresponding properties of TU1 pure copper are also listed in Table 1 (both alloys were annealed wi...

Embodiment 2

[0016] Example 2: The alloy composition is TiB 2 -0.5wt%, the rest is copper and unavoidable impurities. The raw materials for preparing the alloy are Cu-0.68wt% Ti and Cu-0.34wt% B. figure 2 After the two crucibles in the device shown are melted and overheated to 1350℃, use 2×10 5 The high-pressure and high-purity Ar gas of Pa presses the alloy melt into the reaction chamber from the two pipes respectively, so that the two melts react in situ when they collide and mix to form TiB. 2 A homogeneous mixture of nanoparticles and pure copper melt. The mixture is quickly condensed by spray deposition. The conditions of spray deposition are: Pressure: 3×10 5 ~6×10 5 Pa, atomizing gas: Ar gas, made of Cu-TiB 2 The alloy billet is hot-extruded and cold-drawn into a Φ12 bar. Its main performance is shown in Table 2. For the convenience of comparison, Cu-0.35wt% Al is also listed in Table 2 2 O 3 Corresponding performance of the dispersion strengthened copper alloy (both alloys are annealed...

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Abstract

This invention relates to a kind of Cu-TiB2 alloy and its preparation method. Taking Cu-Ti and Cu-B as the centre alloy, melting the centre alloy respectively and overheating them till 1300DEG C-1400DEG C, mixing the two melt to take original place reaction, making the uniformity compound body which is composed of the TiB2 nanometer particle and pure cupper fused mass, freezing the compound body quickly with the method of jetting deposition, manufacturing the Cu-TiB2 alloy base ingot , producing the Cu-TiB2 alloy finished product. The alloy in this invention compares with no oxygen copper, have these advantages that it has high intensity, it resists high temperature and its function of anneal and softening are good , whose sigma0.2 is 3-12 times than no oxygen copper, the temperature of the anneal softening is over 900DEG C, the electric conduction rate may arrive at 95% IACS, the electric conduction rate of the high concentration Cu-TiB2 alloy may arrive at 75% IACS , comparing with these deposition strengthening alloys such as the Cu-Fe-P system, Cu-Ni-Si system, Cu-Cr-Zr system , the Cu-TiB2 alloy has the functions that it has higher electric conduction and it resists high temperature as well as the good function of anneal and softening.

Description

Technical field [0001] The invention relates to a Cu-TiB 2 The alloy and the preparation method thereof. The copper alloy has high strength, high conductivity, and high temperature annealing softening resistance characteristics, and can be applied to the fields of electric vacuum, resistance welding electrodes, high voltage switches, electronic and electrical engineering, nuclear technology and the like. Background technique [0002] In the fields of microwave technology, microelectronics, electrical engineering, automobile manufacturing, metallurgy, nuclear technology, etc., there is a wide demand for a copper alloy with high strength, high conductivity, and high temperature annealing softening characteristics. It is used to manufacture electric vacuum microwave tubes and large-scale integration. Key materials for circuit lead frames, high-voltage switch conductive rods, automotive resistance welding electrodes, continuous casting machine molds, controlled thermonuclear reaction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22C1/10B22D17/00
Inventor 汪明朴李周郭明星谭望贾延琳
Owner CENT SOUTH UNIV
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