Wear-resistant and corrosion-resistant rare earth copper alloy

Abstract

The utility model discloses a wear-resistant corrosion-resistant rare earth copper alloy which comprises a copper base layer, a titanium layer on the copper base layer, a niobium layer on the titanium layer, a tantalum layer on the niobium layer, a chromium layer on the tantalum layer, an iridium layer on the chromium layer, a molybdenum layer on the iridium layer and a vanadium layer on the molybdenum layer. A rare earth element layer is arranged on the upper layer of the vanadium layer, trace titanium, niobium, tantalum, chromium, iridium, molybdenum, vanadium and rare earth elements are added on the basis of a traditional alloy, the percentage content of all elements in the copper alloy is adjusted, the trace rare earth elements and the titanium, niobium, tantalum, chromium, iridium, molybdenum and vanadium generate a synergistic effect, alloy grains can be refined, the microstructure of the material can be improved, and the mechanical property of the material can be improved. Therefore, the wear resistance is improved, a firmer passive film can be formed, the corrosion resistance of the material in a severe environment is improved, and the alloy has high wear resistance and corrosion resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper alloy technical field, especially in a kind of wear-resistant corrosion-resistant rare earth copper alloy. BACKGROUND

[0002] Copper alloy is with pure copper as matrix adding one or several other elements and constitutes alloy, pure copper is purple red, also called red copper, pure copper density is 8.96, melting point is 1083 ℃, with excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance, mainly used for making generator, bus, cable, switch device, transformer and other electrical equipment and heat exchanger, pipeline, solar heating device flat-plate collector and other heat-conducting equipment, according to function, there is electrically conductive thermal copper alloy (mainly non-alloyed copper and micro-alloyed copper), structural copper alloy (almost includes all copper alloy), corrosion-resistant copper alloy (mainly tin brass, aluminum brass, various non-white copper, aluminum bronze, titanium bronze etc.) wear-resistant copper alloy (mainly containing lead, tin, aluminum, manganese and other elements complex brass, aluminum bronze etc.), easy cutting copper alloy (copper-lead, copper-tellurium, copper-antimony alloy), elastic copper alloy (mainly antimony bronze, aluminum bronze, beryllium bronze, titanium bronze etc.) damping copper alloy (high manganese copper alloy etc.), artistic copper alloy (pure copper, simple single copper, tin bronze, aluminum bronze, white copper etc.), obviously, many copper alloys have multiple functions, rare earth is a beneficial additive element in metal material, rare earth can purify copper melt, remove oxygen, sulfur, hydrogen and low melting point elements bismuth, tin, lead etc. in copper, improve the high temperature performance and hot working performance of copper and copper alloy, reduce the hot cracking tendency of copper and copper alloy, improve the thermal plasticity, heat resistance and corrosion resistance of material, but the corrosion resistance of copper alloy is poor, which will quickly fail in harsh environment, and the wear resistance and corrosion resistance of copper alloy need to be improved. CONTENT OF UTILITY MODEL

[0003] The utility model aims at least to solve one of the technical problems in prior art, provide a kind of wear-resistant corrosion-resistant rare earth copper alloy, on the basis of traditional alloy, add trace titanium, niobium, tantalum, chromium, iridium, molybdenum, vanadium and rare earth element, and the percentage content of each element in copper alloy is adjusted, so that trace rare earth element and titanium, niobium, tantalum, chromium, iridium, molybdenum, vanadium produce synergistic effect, can refine the grain of alloy, improve the microstructure of material, to improve wear resistance, and can form more solid passivation film, improve the corrosion resistance of material in harsh environment, so that alloy has higher wear-resistant corrosion-resistant capacity, by the adjustment of material, improve the strength and toughness of alloy, so that it performs better under dynamic load, not easy to break or deform, improve the mechanical properties of material, so as to have more excellent use effect and service life.

[0004] A copper-based layer, an upper layer of the copper-based layer has a titanium layer, an upper layer of the titanium layer has a niobium layer, an upper layer of the niobium layer has a tantalum layer, an upper layer of the tantalum layer has a chromium layer, an upper layer of the chromium layer has an iridium layer, an upper layer of the iridium layer has a molybdenum layer, an upper layer of the molybdenum layer has a vanadium layer, an upper layer of the vanadium layer has a rare earth element layer, on the basis of a traditional alloy, trace amounts of titanium, niobium, tantalum, chromium, iridium, molybdenum, vanadium and rare earth elements are added, and the percentage content of each element in the copper alloy is adjusted, so that the trace amounts of rare earth elements and titanium, niobium, tantalum, chromium, iridium, molybdenum and vanadium produce a synergistic effect, the grain of the alloy can be refined, the microstructure of the material can be improved, the wear resistance can be improved, a more robust passivation film can be formed, the corrosion resistance of the material in harsh environments can be improved, the alloy has high wear resistance and corrosion resistance, the strength and toughness of the alloy are improved through adjustment of the material, the alloy performs better under dynamic load and is not easy to break or deform, the mechanical properties of the material are improved, and thus the alloy has more excellent use effect and service life.

[0005] According to the rare earth copper alloy provided by the novel alloy, the rare earth element is cerium and lanthanum.

[0006] According to the rare earth copper alloy provided by the novel alloy, the rare earth element is cerium and lanthanum.

[0007] S1 Initial smelting: copper is first heated to melting and kept at 1200-1600 DEG C;

[0008] S2 Alloying: rare earth elements and titanium, niobium, tantalum, iridium, chromium, molybdenum and vanadium alloying elements are added to the fully melted copper, and continuous stirring is performed to ensure uniform distribution of each component;

[0009] S3 Casting and cooling: the molten alloy is poured into a mold, and the cooling rate is controlled to obtain the required microstructure and performance;

[0010] S4 Heat treatment: the alloy is heated to 400-800 DEG C, and slowly cooled after holding for a period of time, so as to improve its strength, hardness, toughness and corrosion resistance;

[0011] S5 Machining: forging, rolling and other processing are performed to process the ingot into the required size and shape.

[0012] According to the rare earth copper alloy provided by the novel type, S1 and S2 are smelted under the protection of inert gas, and the inert gas is nitrogen. The inert gas cannot react with the metal, can effectively prevent the oxidation of alloy components in the smelting process, maintains the purity and performance of the metal, can improve the alloy quality, can significantly improve the mechanical properties and corrosion resistance of the alloy by reducing oxidation and other gas pollution, ensures that the quality of the final product is more stable and reliable, can enhance the uniformity of the components, the protection of the inert gas is helpful to the uniform distribution of alloy elements in the melting process, avoids the unevenness of the components caused by oxidation, thereby improving the overall performance of the material, reducing the influence of impurities, in the smelting process, the moisture and impurity gas (such as hydrogen and nitrogen) in the external environment can have a negative impact on the performance of the alloy, and the use of inert gas can reduce the entry of these impurities, can improve the smelting process, under the protection of inert gas, more accurate temperature control and atmosphere control can be realized, thereby improving the efficiency and safety of smelting.

[0013] Advantages

[0014] 1. Compared with the prior art, the novel rare earth copper alloy has the advantages that on the basis of the traditional alloy, trace amounts of titanium, niobium, tantalum, chromium, iridium, molybdenum, vanadium and rare earth elements are added, and the percentage contents of the elements in the copper alloy are adjusted, so that the trace amounts of rare earth elements and titanium, niobium, tantalum, chromium, iridium, molybdenum and vanadium produce a synergistic effect, can refine the grain size of the alloy, improve the microstructure of the material, thereby improve the wear resistance, and can form a more solid passivation film, improve the corrosion resistance of the material in harsh environments, so that the alloy has high wear resistance and corrosion resistance.

[0015] 2. Compared with the prior art, the novel rare earth copper alloy has the advantages that by adjusting the material, the strength and toughness of the alloy are improved, so that it performs better under dynamic load and is not easy to break or deform, the mechanical properties of the material are improved, thereby having more excellent use effect and service life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the novel rare earth copper alloy.

[0017] Legend:

[0018] 1. Copper base layer; 2. Titanium layer; 3. Niobium layer; 4. Tantalum layer; 5. Chromium layer; 6. Iridium layer; 7. Molybdenum layer; 8. Vanadium layer; 9. Rare earth element layer. DETAILED DESCRIPTION

[0019] The detailed description of the specific embodiments of the present application will be described in this part, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as the limitation of the protection scope of the present application.

[0020] Referring to Figure 1 The present application provides a kind of wear-resistant corrosion-resistant rare earth copper alloy, it includes, copper base layer 1 as basic material, the upper layer of copper base layer 1 has titanium layer 2, the upper layer of titanium layer 2 has niobium layer 3, the upper layer of niobium layer 3 has tantalum layer 4, the upper layer of tantalum layer 4 has chromium layer 5, the upper layer of chromium layer 5 has iridium layer 6, the upper layer of iridium layer 6 has molybdenum layer 7, the upper layer of molybdenum layer 7 has vanadium layer 8, the upper layer of vanadium layer 8 has rare earth element layer 9, rare earth element layer 9 specifically is cerium and lanthanum, as alloy material adds, increase the strength and hardness of copper alloy, improve wear resistance and corrosion resistance;

[0021] Titanium layer 2 has excellent strength and weight ratio, good corrosion resistance and oxidation resistance, and good stability in high temperature and sulfuric acid and other corrosive media, titanium usually forms solid solution or rough surface structure in copper alloy, increases the strength and hardness of copper alloy, improves high temperature resistance, can improve the wear resistance and corrosion resistance of alloy, while reducing the density of alloy;Niobium layer 3 has good ductility and oxidation resistance, can improve the high temperature strength and corrosion resistance of alloy, usually forms strengthening phase in copper alloy, improves the tensile strength and toughness of alloy;Tantalum layer 4 has excellent corrosion resistance, especially in acidic environment, tantalum usually exists in the form of fine particles or precipitated phase in copper alloy, has very high melting point and excellent corrosion resistance, can greatly improve the corrosion resistance and mechanical properties of alloy in extreme environment;

[0022] Chromium layer 5 can significantly improve the corrosion resistance and hardness of alloy, improve its wear resistance, and can promote the hardness and strength of alloy, chromium can form fine solid solution, strengthening phase, can improve hardness and oxidation resistance, improve the performance of copper alloy in harsh environment by improving corrosion resistance and wear resistance;Iridium layer 6 has extremely high corrosion resistance and wear resistance, high temperature resistance, which helps to increase the stability of alloy, iridium usually exists in the form of trace dispersion in copper alloy, which can significantly improve the corrosion resistance and high temperature resistance of alloy;Molybdenum layer 7 can significantly improve the high temperature strength and hardness of alloy, and enhance its wear resistance and plastic deformation resistance, molybdenum can form fine solid solution or strengthening phase, enhance high temperature resistance and mechanical strength, improve the strength and oxidation resistance of copper alloy, especially suitable for high temperature application;Vanadium layer 8 can increase the strength, toughness and wear resistance of alloy, and improve the hardness and corrosion resistance, while improving the high temperature resistance of material, vanadium exists in the form of fine particles in copper alloy, mainly forms strengthening phase, improves the rigidity and toughness of alloy, can significantly improve the strength and wear resistance of copper alloy under load.

[0023] Working principle: copper is first heated to melting and kept between 1200-1600 DEG C, then add rare earth elements and titanium, niobium, tantalum, iridium, chromium, molybdenum, vanadium alloying elements in the fully melted copper, and continue to stir to ensure uniform distribution of each component, then pour the molten alloy into a mold, control the cooling rate to get the required microstructure and performance, then heat the alloy to 400-800 DEG C, keep warm for a period of time and slowly cool down to improve its strength, hardness, toughness and corrosion resistance, finally carry out forging, rolling and other processing, process the ingot into the required size and shape.

[0024] The above has made detailed description to the embodiments of the utility model in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, still can make various changes in the knowledge range possessed by the ordinary skill in the art without departing from the utility model's purpose.

Claims

1. A wear and corrosion resistant rare earth copper alloy characterized by, Comprise: A copper-based layer (1), the upper layer of the copper-based layer (1) has a titanium layer (2), the upper layer of the titanium layer (2) has a niobium layer (3), the upper layer of the niobium layer (3) has a tantalum layer (4), the upper layer of the tantalum layer (4) has a chromium layer (5), the upper layer of the chromium layer (5) has an iridium layer (6), the upper layer of the iridium layer (6) has a molybdenum layer (7), the upper layer of the molybdenum layer (7) has a vanadium layer (8), and the upper layer of the vanadium layer (8) has a rare earth element layer (9).

2. A wear and corrosion resistant rare earth copper alloy as claimed in claim 1, wherein, The rare earth element layer (9) is specifically cerium and lanthanum.

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