| 摘要 |
PURPOSE:To be provided with both a thermal stability and a chemical stability and to realize a long life by a method wherein a discharge electrode is formed in such a way that a sheetlike outermost-layer part composed of an acid- resistant metal is fixed and bonded to a base part composed of a metal material whose thermal conductivity is high. CONSTITUTION:A base part 7 is formed of copper (Cu) or aluminum (A) as a metal material whose thermal conductivity is high in such a way that its cross section is nearly arc-shaped and its plane shape is a slender rectangle; a part near the top of an arc is formed to be a flat face 9. An outermost-layer part 8 which forms one part of the arc of the base part 1 and whose cross-sectional shape is formed to be a crescent shape is bonded and fixed to the flat face 9 by a means such as, e.g. a brazing operation. Sheetlike nickel as a metal whose corrosion resistance is excellent is used for the outermost-layer part 8. Since the base part 7 is formed of a metal whose thermal conductivity is high, heat is dissipated effectively by said base part 7 even when a pulse discharge is repeated; a thermal stability is not damaged. |
