Preparation method of zinc oxide antireflection film for transparent aluminum oxide ceramic
A technology of alumina ceramics and zinc oxide, which is applied in the field of preparation of zinc oxide antireflection films for transparent alumina ceramics, and achieves the effects of easy realization, added value, and high light transmittance.
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Embodiment 1
[0019] According to the zinc ion concentration of 0.3mol / L, the Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol under magnetic stirring, and a small amount of diethanolamine was added to adjust the viscosity. Aged at 40°C for 20 hours to obtain a uniform and stable transparent precursor sol. The thin film was prepared by the pulling method, the falling speed was 400 μm / s, the substrate was immersed in the sol for 60 s, the pulling speed was 200 μm / s, 4 layers of thin film were coated, the annealing temperature was 600 °C, and the time was 4 h.
[0020] The light transmittance test results of the zinc oxide anti-reflection film for transparent alumina ceramics prepared in this embodiment are as follows figure 1 shown.
Embodiment 2
[0022] According to the zinc ion concentration of 0.5mol / L, Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol under magnetic stirring, and a small amount of diethanolamine was added to adjust the viscosity. Aged at 40°C for 20 hours to obtain a uniform and stable transparent precursor sol. The film was prepared by the pulling method, the falling speed was 400 μm / s, the substrate was immersed in the sol for 60 s, the pulling speed was 200 μm / s, 4 layers of thin film were coated, the annealing temperature was 800 °C, and the time was 2 h.
[0023] The light transmittance test results of the zinc oxide anti-reflection film for transparent alumina ceramics prepared in this embodiment are as follows figure 2 shown.
Embodiment 3
[0025] According to the zinc ion concentration of 0.7mol / L, the Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol under magnetic stirring, and a small amount of diethanolamine was added to adjust the viscosity. Aged at 40°C for 20 hours to obtain a uniform and stable transparent precursor sol. The thin film was prepared by pulling method, the descending speed was 400 μm / s, the dipping time of the substrate in the sol was 60 s, the pulling speed was 200 μm / s, 4 layers of thin film were coated, the annealing temperature was 900 °C, and the time was 1 h.
[0026] The light transmittance test results of the zinc oxide anti-reflection film for transparent alumina ceramics prepared in this embodiment are as follows image 3 shown.
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