HEAT RESISTANT INSULATING SUBSTRATE, AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a heat resistant insulating substrate provided with an insulating layer having excellent electric insulating properties and heat resistance, and satisfactory flatness, and to provide a production method for easily producing the heat resistant insulating substrate.

SOLUTION: The heat resistant insulating substrate is obtained by laminating an intermediate layer and an insulating layer on a metal substrate, the intermediate layer is made of a metal capable of anode oxidation, and the insulating layer is made of the anodic oxide of the above metal. The heat resistant insulating substrate is produced first by forming a metal layer on a metal substrate using a metal capable of anode oxidation, next anodically oxidizing the metal layer in such a manner that a part of the metal layer is left as the intermediate layer on the boundary with the metal substrate so as to form an insulating layer.

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