Thick film circuit heating part based on minicrystal glass base plate and its making technology
A glass-ceramic, thick-film circuit technology, applied in electrical components, thick-film resistors, heating element materials, etc., can solve the problems of low cost, high power, and high thermal efficiency, and achieve improved conductivity, energy saving, and insulation performance. Good results
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Embodiment 1
[0029] As shown in Figure 1 and Figure 2, a thick-film circuit electric heating element based on a glass-ceramic substrate in the present invention includes a substrate and a series of electronic pastes, and the series of electronic pastes are prepared on the substrate in the form of a thick-film circuit. Electronic paste includes packaging paste and electrode paste. The series of electronic pastes are composed of three parts: functional phase, inorganic binder phase and organic carrier. Among them, the substrate is β-quartz solid solution as the main crystal phase Li 2 O-Al 2 o 3 SiO2-P 2 o 3 -La 2 o 3 System glass-ceramic substrate, the nucleating agent is TiO 2 , ZrO 2 .
[0030] Preparation of Li with β-quartz solid solution as the main crystal phase 2 O-Al 2 o 3 SiO2-P 2 o 3 -La 2 o 3 Rare earth thick film circuit heating element of the system glass-ceramic substrate:
[0031] According to the glass-ceramic formula:
[0032] The composition weight ratio o...
Embodiment 2
[0050] The difference between this embodiment and the above-mentioned embodiment is that the substrate is CaO-Al with β-wollastonite as the main crystal phase. 2 o 3 SiO2-B 2 o 3 -La 2 o 3 System glass-ceramic substrate, the composition weight ratio of each oxide is: CaO18~38%, Al 2 o 3 5~26%, SiO 2 30-65%, B 2 o 3 2~16%, La 2 o 3 0.3~15%, Co 2 o 3 0.05~6%, TiO 2 1~10%, ZrO 2 1 to 10%.
[0051] Rare earth resistance slurry performance parameter of the present invention:
[0052] ①Electrical properties:
[0053] square resistance
resolution
TCR / ppm / ℃
Aging strength
25±2mΩ / □
0.1mm
1000±150ppm×
>10(N / mm2)
10-6 / ℃
[0054] ②Physical properties
[0055]
[0056] Rare earth electrode slurry performance parameter of the present invention:
[0057] ①Electrical properties:
[0058] square resistance
resolution
tensile strength
Aging strength
<5±2mΩ / □
0.1mm
>16(N / mm2) ...
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