Preparation method for high-volume-fraction SiC reinforced Al-base composite material
A high volume fraction, composite material technology, applied in the field of preparation of SiC particle reinforced Al-based composite materials, can solve the problems of poor uniformity of structure, difficult production of complex parts, high equipment cost, etc., to achieve improved interface bonding performance, low production cost, The effect of improving mechanical properties
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[0045] Example 1:
[0046] 1. Oxidation treatment of SiC powder:
[0047] Place the SiC powder (with the particle size of 600 mesh, 300 mesh, 150 mesh, according to the mass ratio of 1:1:2) in a high-temperature electric furnace, and oxidize at 1100°C for 2h to form a dense SiO layer on the surface 2 Floor.
[0048] 2. TiO 2 Preparation of sol:
[0049] Prepare water and alcohol into a mixed solution according to a mass ratio of 1:9, where the mass of water is 5g, add glacial acetic acid (CH 3 COOH) adjust the pH to 2, take 12g of the mixed solution in it, and add butyl titanate (C 16 H 36 O 4 Ti) and the mixed solution are mixed according to a mass ratio of 6:1, heated in a water bath (30℃) and stirred for 2 hours to obtain transparent and stable TiO 2 Sol.
[0050] 3. Surface coating of SiC powder: TiO 2 The mixed sol of sol and PVB is added to the SiC powder after oxidation treatment according to 10% of the mass of the added SiC powder, and mixed with a KNM type rapid grinder for 2 h...
Example Embodiment
[0060] Example 2:
[0061] 1. Oxidation treatment of SiC powder:
[0062] Put the SiC powder (with particle size of 600 mesh, 300 mesh, 150 mesh, according to the mass ratio of 1:1.2:2.4) in a high-temperature electric furnace, and oxidize at 1200°C for 3 hours to form a dense SiO layer on the surface 2 Floor.
[0063] 2. TiO 2 Preparation of sol:
[0064] Prepare water and alcohol into a mixed solution according to the mass ratio of 1:11, where the mass of water is 8g, add glacial acetic acid (CH 3 COOH) adjust the pH to 4, take 12g of the mixed solution in it, and add butyl titanate (C 16 H 36 O 4 Ti) and the mixed solution are mixed according to a mass ratio of 9:1, heated in a water bath (40℃) and stirred for 4 hours to obtain transparent and stable TiO 2 Sol.
[0065] 3. Surface coating of SiC powder: TiO 2 The mixed sol of sol and PVB is added to the SiC powder after oxidation treatment according to 15% of the mass of the added SiC powder, and mixed with a KNM type rapid grinder f...
Example Embodiment
[0075] Example 3:
[0076] 1. Oxidation treatment of SiC powder:
[0077] Place the SiC powder (particle size of 600 mesh, 300 mesh, 150 mesh, according to the mass ratio of 1:1.1:2) in a high-temperature electric furnace, and oxidize at 1200°C for 2h to form a dense SiO layer on the surface 2 Floor.
[0078] 2. TiO 2 Preparation of sol:
[0079] Prepare water and alcohol into a mixed solution according to the mass fraction of 1:10, where the mass of water is 8g, add glacial acetic acid (CH 3 COOH) adjust the pH to 4, take 12g of the mixed solution in it, and add butyl titanate (C 16 H 36 O 4 Ti) and the mixed solution are mixed according to 7:1, heated in a water bath (40℃) and stirred for 2h, and a transparent and stable TiO is obtained 2 Sol.
[0080] 3. Surface coating of SiC powder: TiO 2 The mixed sol of sol and PVB is added to the SiC powder after oxidation treatment according to 12% of the mass of the added SiC powder, and mixed with a KNM type rapid grinder for 3 hours.
[0081]...
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