Method of making and structure for a solid state ion responsive and reference electrodes

Abstract From the Canadian patent

A solid state ion concentration measuring electrode having the ion concentration measuring electrode structure formed by an outer ion sensitive layer deposited by RF sputtering on a substantially thermally matched supporting solid electrolyte layer. The reference electrode is similarly formed by depositing an outer layer of glass onto a supporting solid electrolyte layer by RF sputtering with the temperature expansion of the glass and supporting solid electrolyte structure being selected to produce a differential expansion causing random cracking of the glass layer during temperature cycling of the reference electrode. A combination structure is provided wherein the ion concentration …