430不锈钢用绝缘玻璃浆料

Insulanting Glass Paste for 430 Stainless Steel

研究了一种适合430不锈钢发热器用BaO-Al2O3-SiO2-B2O3绝缘玻璃。结果表明:当BaO的质量分数在40%,SiO2在33%,Al2O3在10%,B2O3在5%,其它成分在6%时,可获得烧结温度在850～870℃,保温时间在10～15min,ρ(20℃)为3.2×1014Ω.cm,ρ(500℃)为1.07×108Ω.cm,耐压不低于2000V/80μm,膨胀系数在(8～8.5)×10-6/℃,抗热震性良好的430不锈钢用绝缘玻璃。研究了有机载体的成分与印刷厚度的关系。结果表明:采用合适的有机载体制备的绝缘介质浆料,印刷3次,烧结3次后,可获得80～90μm的印刷厚度。

A kind of BaO-Al2O3-SiO2-B2O3 insulating glass suitable for stainless steel heater was studied. The results show that a splendid insulating glass for 430 stainless steel with resistivity ρ（20℃）=3.2×1014Ω·cm, ρ（500℃）=1.07×108Ω·cm, breakdown voltage ≥2000V/80μm, thermal expansion coefficient α = （8～8.5）×10-6/℃, and excellent thermal shock resistance can be obtained, if the glass is composed of 40% BaO, 33% SiO2, 10% Al2O3, 5% B2O3,and 6% other components and sintered at 850～870℃ for 10～15min. The relationship between composition of organic carrier and printing thickness were studied. The results show that an optimum printing thickness may be achieved by using proper organic carrier.