Low-loss microwave dielectric ceramic material and preparation method thereof
A technology of microwave dielectric ceramics and low loss, applied in the field of microwave ceramic dielectric materials and their preparation, to achieve the effect of adjustable dielectric constant and low price
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[0028] Example 1
[0029] A method for preparing low-loss microwave dielectric ceramic material includes the following steps:
[0030] Step 1: Synthesis of Mg 2 SiO 4 Crystal phase powder; use 99% pure basic magnesium carbonate and 99.5% silicon dioxide as raw materials, and control the molar ratio of Mg and Si to Mg:Si=2.03:1. The prepared raw materials are ball milled, and the ball milled materials are dried at 100°C and passed through a 40-mesh sieve. The specific ball milling process is as follows: in a nylon ball milling tank, use zirconium dioxide balls as the milling ball, deionized water as the ball milling solvent, and ball mill for 6 hours at a weight ratio of material: ball: water = 1:5:4. Pre-fire the dried material at 1260℃ for 3 hours to obtain Mg containing a small amount of MgO powder 2 SiO 4 Crystal phase powder.
[0031] Step 2: Ingredients; the purity is 99% basic magnesium carbonate, 99.5% titanium dioxide, 99.5% calcium carbonate as raw materials to prepare the...
Example Embodiment
[0038] Example 2
[0039] A preparation method of microwave dielectric ceramic material includes the following steps:
[0040] Step 1: Synthesis of Mg 2 SiO 4 Crystal phase powder; use 99% basic magnesium carbonate and 99.5% silicon dioxide as raw materials, and control the molar ratio of Mg and Si to Mg:Si=2.05:1. The prepared raw materials are ball milled, and the ball milled materials are dried at 100°C and passed through a 40-mesh sieve. The specific ball milling process is as follows: in a nylon ball milling tank, use zirconium dioxide balls as the milling ball, deionized water as the ball milling solvent, and ball mill for 6 hours at a weight ratio of material: ball: water = 1:5:4. Pre-burn the dried material at 1220℃ for 3 hours, containing a small amount of MgO powder 2 SiO 4 Crystal phase powder.
[0041] Step 2: Ingredients; the Mg obtained in step 1 2 SiO 4 The main crystalline phase powder and the purity of 99% basic magnesium carbonate, 99.5% titanium dioxide, and 99.5...
Example Embodiment
[0048] Example 3
[0049] Step 1: Synthesis of Mg 2 SiO 4 Crystal phase powder; use 99% basic magnesium carbonate and 99.5% silicon dioxide as raw materials, and control the molar ratio of Mg and Si to Mg:Si=2.07:1. The prepared raw materials are ball milled, and the ball milled materials are dried at 100°C and passed through a 40-mesh sieve. The specific ball milling process is as follows: in a nylon ball milling tank, use zirconium dioxide balls as the milling ball, deionized water as the ball milling solvent, and ball mill for 6 hours at a weight ratio of material: ball: water = 1:5:4. Pre-burn the dried material at 1220℃ for 3 hours, containing a small amount of MgO powder 2 SiO 4 Crystal phase powder.
[0050] Step 2: Ingredients; the Mg obtained in step 1 2 SiO 4 The main crystalline phase powder and the purity of 99% basic magnesium carbonate, 99.5% titanium dioxide, and 99.5% calcium carbonate are used as raw materials to prepare ingredients. The control ratio is (1-x) MgT...
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