CN107012378B - Cu70Zr20Ti10Amorphous alloy reinforced SiC composite material and preparation process thereof - Google Patents
Cu70Zr20Ti10Amorphous alloy reinforced SiC composite material and preparation process thereof Download PDFInfo
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- CN107012378B CN107012378B CN201710273551.9A CN201710273551A CN107012378B CN 107012378 B CN107012378 B CN 107012378B CN 201710273551 A CN201710273551 A CN 201710273551A CN 107012378 B CN107012378 B CN 107012378B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/065—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on SiC
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
the invention discloses a Cu70Zr20Ti10Amorphous alloy reinforced SiC composite material and preparation method thereofA process for preparing the composite material. The composite material is prepared by mixing Cu70Zr20Ti10The amorphous alloy flake powder and the spherical SiC powder are uniformly mixed and then are formed by hot press molding. Cu70Zr20Ti10The amorphous alloy flake powder is p-spherical crystalline Cu70Zr20Ti10The atomized powder is ball milled to obtain. The linear expansion coefficient of the composite material is 5.3 multiplied by 10‑6 K‑1A thermal conductivity of 86.4W/m.K and a density of 3.5 g/cm3。
Description
Technical Field
The invention relates to a Cu70Zr20Ti10 amorphous alloy reinforced SiC composite material and a preparation process thereof.
Background
The silicon carbide has stable chemical performance, high heat conductivity coefficient, small thermal expansion coefficient, corrosion resistance, high temperature resistance and good wear resistance, and the high-grade refractory material prepared from the functional ceramic, the high-grade refractory material, the grinding material and the metallurgical raw materials has the advantages of thermal shock resistance, small volume, light weight, high strength and good energy-saving effect. However, the preparation process of the silicon carbide product is complex, the sintering temperature is high (generally above 2000 ℃), the full density is difficult to achieve, and the application range of the silicon carbide product is limited. Therefore, the forming temperature of the silicon carbide is reduced, the preparation process of the silicon carbide is simplified, and the silicon carbide has important significance in reaching full compactness.
Disclosure of Invention
The invention aims to provide a Cu70Zr20Ti10 amorphous alloy reinforced SiC composite material and a preparation process thereof.
The purpose of the invention is realized by the following technical scheme: the Cu70Zr20Ti10 amorphous alloy reinforced SiC composite material is characterized in that the composite material is a completely compact block composite material obtained by uniformly mixing 10wt% of Cu70Zr20Ti10 amorphous alloy flake powder and 90wt% of SiC spherical powder and then carrying out hot press molding, wherein the Cu70Zr20Ti10 amorphous alloy flake powder is flake powder obtained by ball milling Cu70Zr20Ti10 spherical crystalline atomized powder, the glass transition temperature of the flake powder is 325.2 ℃, and the crystallization temperature of the flake powder is 382.5 ℃.
The invention relates to a preparation process of a Cu70Zr20Ti10 amorphous alloy reinforced SiC composite material, which is characterized by comprising the following steps: (1) putting Cu70Zr20Ti10 spherical crystalline atomized powder into a vacuum ball milling tank, filling the vacuum ball milling tank with absolute ethyl alcohol, and carrying out ball milling for 10 hours under the conditions that the ball-material ratio is 30:1 and the ball milling speed is 500 r/min to obtain amorphous alloy flaky powder; (2) uniformly mixing 10wt% of Cu70Zr20Ti10 amorphous alloy flake powder and 90wt% of SiC spherical powder, putting the mixture into an inner cavity of a stainless steel mold, heating the mold to 350 ℃ at a heating speed of 20 ℃/min, preserving heat for 10 min, and carrying out hot press molding under the conditions of 150MPa pressure and 5 min dwell time to obtain the completely compact block composite material.
Compared with the existing SiC composite material preparation process, the Cu70Zr20Ti10 amorphous alloy reinforced SiC composite material and the preparation process thereof have the following characteristics that (1) the preparation process of the SiC composite material is simplified, (2) Cu70Zr20Ti10 flake amorphous alloy powder is adopted as a filler and a bonding agent among gaps of the SiC spherical composite powder, (3) the SiC particles are molded by the liquid characteristic of the Cu70Zr20Ti10 flake amorphous alloy powder in a supercooled liquid region, and (4) the molding temperature of the SiC composite material is greatly reduced, and the full densification of the SiC composite material is realized.
The product prepared by the invention is respectively ball-milled by a vacuum ball milling tank, formed by an oil press, observed by a scanning electron microscope for the morphology of the Cu70Zr20Ti10 amorphous alloy flake powder, detected by XRD for the amorphous structure of the Cu70Zr20Ti10 amorphous alloy flake powder, measured by a differential scanning calorimeter for the glass transition temperature and the crystallization temperature of the Cu70Zr20Ti10 amorphous alloy flake powder, measured by a thermal expansion instrument for the linear expansion coefficient, measured by a laser flashing instrument for the thermal conductivity coefficient, and measured by an Archimedes method for the density.
The components of the SiC composite material reinforced by the Cu70Zr20Ti10 amorphous alloy are 10wt% of Cu70Zr20Ti10 amorphous alloy flake powder and 90wt% of SiC spherical powder, and the SiC composite material has the linear expansion coefficient of 5.3 multiplied by 10 < -6 > K < -1 >, the thermal conductivity of 86.4W/m < -K > and the density of 3.5 g/cm < 3 >.
Detailed Description
The invention is further illustrated by the following specific examples:
Example 1
Weighing 5 g of Cu70Zr20Ti10 spherical crystalline atomized powder by using a balance, putting the powder into a vacuum ball milling tank, filling the tank with absolute ethyl alcohol, and carrying out ball milling for 10 hours under the conditions that the ball-material ratio is 30:1 and the ball milling speed is 500 r/min to obtain Cu70Zr20Ti10 amorphous alloy flaky powder; then, 45 g of SiC spherical powder is weighed by balance, 5 g of Cu70Zr20Ti10 amorphous alloy flake powder and 45 g of SiC spherical powder are uniformly mixed and put into an inner cavity of a stainless steel die, the die is heated to 350 ℃ at the heating speed of 20 ℃/min, the temperature is kept for 10 min, and hot-press molding is carried out under the conditions of 150MPa pressure and 5 min pressure maintaining time. The composite material has a linear expansion coefficient of 5.3X 10-6K-1, a thermal conductivity of 86.4W/m.K and a density of 3.5 g/cm 3.
Example 2
Weighing 7 g of Cu70Zr20Ti10 spherical crystalline atomized powder by using a balance, putting the powder into a vacuum ball milling tank, filling the tank with absolute ethyl alcohol, and carrying out ball milling for 10 hours under the conditions that the ball-material ratio is 30:1 and the ball milling speed is 500 r/min to obtain Cu70Zr20Ti10 amorphous alloy flaky powder; then 63 g of SiC spherical powder is weighed by balance, 7 g of Cu70Zr20Ti10 amorphous alloy flake powder and 63 g of SiC spherical powder are uniformly mixed and put into an inner cavity of a stainless steel die, the die is heated to 350 ℃ at the heating speed of 20 ℃/min, the temperature is kept for 10 min, and hot-press molding is carried out under the conditions of 150MPa pressure and 5 min pressure maintaining time. The composite material has a linear expansion coefficient of 5.3X 10-6K-1, a thermal conductivity of 86.4W/m.K and a density of 3.5 g/cm 3.
Example 3
Weighing 10 g of Cu70Zr20Ti10 spherical crystalline atomized powder by using a balance, putting the powder into a vacuum ball milling tank, filling the tank with absolute ethyl alcohol, and carrying out ball milling for 10 hours under the conditions that the ball-material ratio is 30:1 and the ball milling speed is 500 r/min to obtain Cu70Zr20Ti10 amorphous alloy flaky powder; then 90 g of SiC spherical powder is weighed by balance, 10 g of Cu70Zr20Ti10 amorphous alloy flake powder and 90 g of SiC spherical powder are uniformly mixed and put into an inner cavity of a stainless steel die, the die is heated to 350 ℃ at the heating speed of 20 ℃/min, the temperature is kept for 10 min, and hot-press molding is carried out under the conditions of 150MPa pressure and 5 min pressure maintaining time. The composite material has a linear expansion coefficient of 5.3X 10-6K-1, a thermal conductivity of 86.4W/m.K and a density of 3.5 g/cm 3.
Claims (2)
1. Cu70Zr20Ti10The SiC composite material reinforced by the amorphous alloy is characterized in that the composite material consists of 10wt% of Cu70Zr20Ti10Uniformly mixing amorphous alloy flake powder and 90wt% of SiC spherical powder, and performing hot press molding to obtain a completely compact block composite material, wherein the Cu is70Zr20Ti10The amorphous alloy flake powder is prepared by ball milling Cu70Zr20Ti10The flaky powder obtained by spherical crystalline atomized powder has the glass transition temperature of 325.2 ℃ and the crystallization temperature of 382.5 ℃, and the composite material is prepared by the following preparation process and is characterized by comprising the following steps of: (1) mixing Cu70Zr20Ti10Putting the spherical crystalline atomized powder into a vacuum ball milling tank, filling the vacuum ball milling tank with absolute ethyl alcohol, and carrying out ball milling for 10 hours under the conditions that the ball-to-material ratio is 30:1 and the ball milling speed is 500 r/min to obtain amorphous alloy flake powder; (2) 10wt% of Cu70Zr20Ti10Uniformly mixing amorphous alloy flake powder and 90wt% of SiC spherical powder, putting the mixture into an inner cavity of a stainless steel mold, heating the mold to 350 ℃ at a heating speed of 20 ℃/min, preserving heat for 10 min, and performing hot press molding under the conditions of 150MPa pressure and 5 min dwell time to obtain the fully compact block composite material.
2. Cu according to claim 170Zr20Ti10The amorphous alloy reinforced SiC composite material is characterized in that the linear expansion coefficient of the composite material is 5.3 multiplied by 10-6 K-1A thermal conductivity of 86.4W/m.K and a density of 3.5 g/cm3。
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| CN107012378B true CN107012378B (en) | 2019-12-17 |
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| CN102234747B (en) * | 2011-06-23 | 2012-07-25 | 湖南理工学院 | Cu-based blocky amorphous alloy composite material |
| US20170101722A1 (en) * | 2014-05-27 | 2017-04-13 | Auckland Uniservices Limited | Plating or Coating Method for Producing Metal-Ceramic Coating on a Substrate |
| CN104772455B (en) * | 2015-04-17 | 2017-03-08 | 湖南理工学院 | A kind of Cu70Zr20Ti10The preparation technology of/Cu non-crystaline amorphous metal sheet composite powder |
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