Manufacturing method of sapphire crystal copper-clad lining plate and copper-clad lining plate thereof
A technology of sapphire crystal and manufacturing method, which is applied in the field of metallization of crystal substrates, can solve problems such as large dispersion of particles inside surface cavities, increased risk of electrical insulation failure, unfavorable module optical online monitoring, etc., to achieve good optical observation effect and heat dissipation Improved performance and tight adhesion
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Embodiment 1
[0060] refer to figure 2 According to the mass ratio of 99.9:0.1, the mixed powder of alumina and calcium carbonate was sprayed on the surface of the sapphire crystal substrate 1 of 30×30mm, and sintered at a high temperature of 1500° C. for 60 minutes to obtain the mixed powder adhesion layer 2 .
[0061] refer to image 3 , the active metal brazing material copper paste was printed on the surface of the mixed powder adhesion layer 2 of 30×30 mm, and dried at 100° C. for 5 minutes to obtain the active metal brazing material layer 3 .
[0062] Among them, the copper paste is prepared by mixing 84% copper nano powder, 5% plasticizer benzoate, 6% auxiliary diatomite clay and 5% organic solvent ether structure fatty acid ester.
[0063] refer to Figure 4 , soak the copper foil at 80°C with 10wt% sodium hydroxide solution for 20 minutes, wash it twice with distilled water; then soak it with 10wt% sulfuric acid solution at room temperature for 3 minutes, Wash twice and blow dr...
Embodiment 2
[0066] According to the mass ratio of 99.9:0.1, the mixed powder of alumina and calcium carbonate is sprayed on the surface of the sapphire crystal substrate of 30×30mm, and sintered at 1800°C for 40 minutes to obtain the mixed powder adhesion layer.
[0067] The active metal brazing material silver paste was printed on the surface of the 30×30 mm mixed powder adhesion layer, and dried at 80° C. for 15 minutes to obtain an active metal brazing material layer.
[0068] Among them, the silver paste uses 88% silver nano powder, 5% thickener-based acrylic acid, 4% plasticizer dipropylene glycol dibenzoate, diethylene glycol dibenzoate, 2% auxiliary agent methylol It is prepared by mixing acrylamide, ammonium bicarbonate, 1% organic solvent butyl carbitol acetate and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.
[0069] Soak the copper foil in 10wt% sodium hydroxide solution at 80°C for 15 minutes and wash it twice with distilled water; then soak it in 10wt% sulfuric acid solut...
Embodiment 3
[0072] According to the mass ratio of 99.9:0.1, the mixed powder of alumina and calcium carbonate was sprayed on the surface of the sapphire crystal substrate of 30×30 mm, and sintered at 1600°C for 50 minutes to obtain the mixed powder adhesion layer.
[0073] The active metal brazing material calcium paste was printed on the surface of the 30×30 mm mixed powder adhesion layer, and dried at 90° C. for 12 minutes to obtain an active metal brazing material layer.
[0074] Among them, the calcium slurry is prepared by mixing 92% calcium nano powder, 3% thickener polyethylene glycol, silicon dioxide, 3% plasticizer tributyl citrate and 2% organic solvent dimethyl adipate. become.
[0075] Soak the copper foil in 10wt% sodium hydroxide solution for 18min at 80°C and wash it twice with distilled water; then soak it in 10wt% sulfuric acid solution at room temperature for 2min and wash it with distilled water Twice, blow dry. Place the treated copper foil on the surface of the acti...
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