Bonded object production method using a continuous furnace to process a stacked body and production method for ceramic circuit substrate using same

A bonded object production method using a continuous furnace to process a stacked body while conveying the stacked body, the stacked body including a metal member, a ceramic member, and a brazing material layer located between the metal member and the ceramic member, the method comprising:

• heating the stacked body in an inert atmosphere from 200° C. to a bonding temperature at an average temperature raising rate of the stacked body of not less than 15° C./min;
• bonding the stacked body in an inert atmosphere at the bonding temperature, the bonding temperature being within a range of not less than 600° C. and not more than 950° C.;
• and
• cooling the stacked body from the bonding temperature to 200° C. at an average temperature lowering rate of the stacked body of not less than 15° C./min, wherein
• an average conveyance speed of the stacked body is not less than 1 cm/min.

A bonded object production method using a continuous furnace to process a stacked body while conveying the stacked body, the stacked body including a metal member, a ceramic member, and a brazing material layer located between the metal member and the ceramic member, the method comprising:

• heating the stacked body in an inert atmosphere from 200° C. to a bonding temperature at an average temperature raising rate of the stacked body of not less than 15° C./min;
• bonding the stacked body in an inert atmosphere at the bonding temperature, the bonding temperature being within a range of not less than 600° C. and not more than 950° C.;
• and
• cooling the stacked body from the bonding temperature to 200° C. at an average temperature lowering rate of the stacked body of not less than 15° C./min, wherein
• the continuous furnace includes a plurality of processing zones, and
• a temperature of the stacked body in a processing zone among the plurality of processing zones in which the stacked body is initially heated is within a range of not less than 150° C. and not more than 400° C.