Patent ID: 9134268
Filing Date: 2015-09-15
Classification: B05D,C23C,G01N

Abstract:
1. A manufacturing method for an oxygen sensor that includes an oxygen sensor element, comprising: coating both surfaces of a solid electrolyte element of the oxygen sensor element with Pt films as a pair of electrodes; and heating at least one of the coated Pt films, coated on a side exposed to measured gas, in a gas atmosphere having a higher oxygen gas concentration than atmospheric gas to align a crystal orientation of the at least one of the Pt films with a (001) plane, wherein, when the crystal orientation is aligned, the oxygen gas concentration is 50 percent by volume or above and the at least one of the Pt films is heated at a heating temperature of 1000° C. to 1300° C., and the at least one of the Pt films is coated by electroless platinum plating.