| 摘要 |
1,166,702. Etching. ELECTRICITE DE FRANCE (SERVICE NATIONAL). 13 June, 1967 [13 June, 1966; 21 March, 1967; 26 May, 1967], No. 27184/67. Heading B6J. [Also in Divisions C7 and H2] An electrode has a ceramic body 1 with a plurality of grooves 9 for supplying oxygen to the zone of the electrode where the ceramic mass is in contact with the current collector grid 2. The electrode is made by preparing a grid of wires comprising one wire of platinum or platinum / rhodium and a second wire of a metal soluble in an acid. The grid is embedded in the ceramic material and the mass sintered and compressed. The metal soluble in acid is then dissolved either by immersing the sintered mass in acid or by electrochemical dissolution. The mass is subsequently sintered again at a higher temperature. |
