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A kind of preparation method of diffusion multi-component
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A multi-component, mold technology, applied in the field of alloy materials
Active Publication Date: 2021-09-10
SHANGHAI JIAOTONG UNIV
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In recent years, many universities and scientific research institutions at home and abroad have been equipped with SPS sintering systems one after another, and use SPS for research and development of new materials, mainly in powder sintering, which is widely used in the consolidation of various block samples Not yet reported
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Embodiment 1
[0047] like Figures 3 to 5 As shown, in a preferred embodiment, the method for preparing diffusion multi-element nodes from four solid bulk metal samples of Fe, Ni, Ni-Al(60at.%Ni) and Ni-Cu(60at.%Ni) is as follows:
[0048] Step 1: Four solid bulk metal samples of Fe, Ni, Ni-Al (60at.%Ni) and Ni-Cu (60at.%Ni) were obtained by wire cutting, and each solid bulk metal was polished with 80# sandpaper On the surface of the sample, the polished solid block metal sample was ultrasonically cleaned twice in an ethanol solution for 10 min each time.
[0049] Step 2: Heat the metal nickel layer mold 3 with an alcohol lamp to make it expand by heat, place the cleaned solid block metal samples in the sample placement layer 4 in the metal nickel layer mold 3 in a certain order, and place the metal nickel layer mold 3 Put it into the inner layer graphite mold 2, and then put the inner layer graphite mold into the outer layer graphite mold 1.
[0050] Step 3: Put the diffused multi-elemen...
Embodiment 2
[0054] like Figures 6 to 8 As shown, in a preferred embodiment, it consists of Fe, Ni, Ni-Al(60at.%Ni), Ni-Cu(60at.%Ni), Ni-Ti(90at.%Ni), Ni-Mn(90at.%Ni) %Ni) six solid bulk metal samples to prepare diffusion multi-element nodes as follows:
[0055] Step 1: Fe, Ni, Ni-Al(60at.%Ni), Ni-Cu(60at.%Ni), Ni-Ti(90at.%Ni), Ni-Mn(90at.%Ni) are obtained by wire cutting ) Six kinds of solid bulk metal samples, the surface of each solid bulk metal sample was polished with 80# sandpaper, and the polished solid bulk metal samples were ultrasonically cleaned twice in ethanol solution for 10 min each time.
[0056] Step 2: Heat the metal nickel layer mold 3 with an alcohol lamp to make it expand by heat, place the cleaned solid block metal samples in the sample placement layer 4 in the metal nickel layer mold 3 in a certain order, and place the metal nickel layer mold 3 Put it into the inner layer graphite mold 2, and then put the inner layer graphite mold into the outer layer graphite mol...
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Abstract
The invention discloses a method for preparing a diffusion multi-element joint, relating to the field of alloy materials, specifically: placing a high-melting point solid block metal sample in a diffusion multi-element joint mold after cutting, grinding and cleaning, and then placing the diffusion multi-element joint The mold is put into a spark plasma sintering furnace for sintering, and the sintering parameters are set, including heating rate, sintering temperature, holding time and sintering pressure. Finally, the diffusion multi-section is obtained after sintering, and the thickness of the diffusion layer is analyzed by scanning electron microscope and X-ray energy spectrum. 50-80 μm. The preparation method of the invention is simple, and the diffusion multi-joint with high melting point difference can be obtained at a relatively low sintering temperature and pressure and within a short sintering time, and the mold used is relatively simple and can be reused.
Description
technical field [0001] The invention relates to the field of alloy materials, in particular to a preparation method of a diffusion multi-element node. Background technique [0002] As the main method for the preparation of bulk alloys in high-throughput experiments, the diffusion multi-element joint is to closely adhere multiple different solid bulk metals together for high-temperature heat treatment to promote the mutual diffusion of metals to form solid solutions or intermetallic compounds. The existing technology for preparing diffusion multi-element joints is to use hot isostatic pressing technology to closely adhere multiple pieces of metal. The consolidation parameters of the Fe-Co-Ni system (ActaMaterialia Vol.88, 2015, p.196) are: sintering at 1200°C and 207MPa for 8h. [0003] Spark Plasma Sintering (SPS) is a new type of rapid sintering technology developed in recent years. The atmosphere is controllable, energy saving and environmental protection. Since the SPS...
Claims
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