Ceramabond 552 Alumina Adhesive

　　High temperature one-part alumina-based ceramic adhesive for bonding and sealing low CTE metals up to 3000°F (1650°C). Typical applications for Ceramabond 552 include bonding ceramic gaskets in wood stoves, electrically insulating sensors, high power resistors, gas igniters, and impellers and degassers used in molten metal processing.

　　The product must be air set for 1-4 hours and after that step cured at 200°F (93°C), 500°F (260°C) for 2 hours at each temperature, it is resistant to most acids, solvents, fuels and molten metals. Applied in a thin coat using a brush, spatula or dispenser. The clearance between mating parts at operating temperature should be 2-8 mils (50-200 microns). Additional properties include a dielectric strength of 173 volts/mil, torque strength of 52 ft-lbs, and coefficient of thermal expansion of 4.3 in/in/°F.

　　Blistering may occur if the glue line is too thick or heating too rapid.高温单组分铝基陶瓷粘合剂，用于连接和密封低CTE金属高达3000°F(1650°C)。陶粒552的典型应用包括在木材炉、电绝缘传感器、高功率电阻、气体点火器以及用于熔融金属加工的叶轮和脱气器中的粘结陶瓷垫片。

　　该产品必须空气凝固1-4小时，然后在200°F(93°C)， 500°F(260°C)在每种温度下固化2小时，它能抵抗大多数酸，溶剂，燃料和熔融金属。用刷子、抹刀或分配器将其涂在薄的涂层上。在工作温度下，配合件之间的间隙应为2-8密尔(50-200微米)。其他性能包括介电强度173伏/mil，扭矩强度52英尺-磅，热膨胀系数4.3 in/in/°F。

　　如果胶线太厚或加热过快，可能会发生起泡。