A kind of high temperature resistant vacuum thermistor packaging glass ceramic material and preparation method thereof
A technology of glass ceramics and vacuum heating, which is applied in the field of glass ceramic materials for high temperature resistant vacuum thermistor packaging and its preparation, can solve problems such as cracking and failure of platinum wire leads, fracture failure, etc., to improve packaging quality and consistency, Good thermal stability and simplified packaging process
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Embodiment 1
[0027] With a molar ratio of 1:1:3, magnesium oxide, aluminum oxide and silicon dioxide are used as the mother phase glass forming materials, accounting for 75% of the total formula, and 25% of the total formula is mixed with Barium oxide; the specific operation is carried out according to the following steps:
[0028] a. According to 15MgO-15Al 2 o 3 -45SiO 2 The composition of -25BaO, respectively weighed magnesium oxide, aluminum oxide, silicon dioxide and barium oxide powders with a purity of 99.99%, placed them in a 1L nylon ball mill jar, added absolute ethanol, and mixed them with the help of a full-range planetary wheel ball mill for 24 Hour, rotating speed is 370 rev / mins, obtains slurry, does not add grinding ball in mixing process;
[0029] b. Dry the slurry obtained in step a at a constant temperature of 65°C with electric blast for 24 hours, remove ethanol, use an agate mortar to manually grind and crush the dried block, and sieve through 200 meshes to obtain a...
Embodiment 2
[0036] According to the molar ratio of 1:1:3, magnesia, aluminum oxide and silicon dioxide are used as the mother phase glass-forming materials, accounting for 75% of the total formula, and the molar proportion of the total formula is 20% % and 5% barium oxide and yttrium oxide mixture, the specific operation is carried out according to the following steps:
[0037] a. According to 15MgO-15Al 2 o 3 -45SiO 2 -20BaO-5Y 2 o 3 The composition of magnesia, aluminum oxide, silicon dioxide, barium oxide and yttrium oxide powders with a purity of 99.99% was weighed, placed in a 1L nylon ball mill jar, ethanol was added, and mixed for 24 hours by means of a full-range planetary wheel ball mill, The rotating speed is 370 rev / min, and the slurry is obtained, and no grinding balls are added in the mixing process;
[0038] b. Dry the slurry obtained in step a at a constant temperature of 65°C for 30 hours, remove ethanol, grind and crush the dried block by hand with an agate mortar, a...
Embodiment 3
[0045] The molar ratio is 1:1:3, with magnesium oxide, aluminum oxide and silicon dioxide as the mother phase glass forming materials, accounting for 75% of the total formula, and 20% of the molar ratio of the total formula. And 5% zirconia and yttrium oxide mixture, concrete operation is carried out according to the following steps:
[0046] a. According to 15MgO-15Al 2 o 3 -45SiO 2 -20ZrO 2 -5Y 2 o 3 The composition of magnesia, aluminum oxide, silicon dioxide, zirconia and yttrium oxide with a purity of 99.99% was weighed, placed in a 1L nylon ball mill jar, added ethanol, and mixed for 24 hours by means of a full-range planetary wheel ball mill, with a speed of 370 rev / min, get the slurry, do not add grinding balls in the mixing process;
[0047] b. Dry the slurry obtained in step a at a constant temperature of 65°C with electric blast for 36 hours, remove ethanol, grind and crush the dried block by hand with an agate mortar, and sieve through 200 meshes to obtain a ...
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