WERKWIJZE VOOR HET VERVAARDIGEN VAN EEN UIT EEN DIKKE FOELIE BESTAANDE WEERSTANDKETEN.

摘要

Disclosed is a method and resulting product whereby thick film conductors which require a reducing firing atmosphere may be included in circuits with thick film resistors requiring an oxidizing firing atmosphere. In accordance with one embodiment, a fritless paste including copper is deposited onto a substrate in a desired conductor pattern and fired to establish adhesion. The copper oxide in the pattern is then reduced to copper metal at a high temperature. This is followed by oxidation of the copper to produce a copper oxide of lower density than the oxide formed after the initial firing. The resistor material is then deposited and fired in an oxidizing atmosphere. The low density copper oxide may then be reduced at a low temperature so that resistor properties are not adversely affected.