Composite electrode structure

Details Composite electrode structure Composite electrode structure

1983-02-18

1986-01-21

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 1T, 204294, 7386112, G01N 2746, C25B 1112, G01F 158

Patent

active

045656193

ABSTRACT:
A nonporous composite electrode, particularly suitable for use in electromagnetic flowmeters, includes a non-metallic, electrically conductive element consisting of a fused mass of polymeric material, such as perfluoroalkoxy (pfa) fluoropolymer, and carbon fibers. The electrode is fabricated by stacking alternating layers of polymeric film and carbon fiber paper, subjecting the assembly to sufficient heat and pressure to intermix the two components and bond them into a coherent mass, and fusing the resultant composite material onto a mounting pin. Using a polymeric material compatible with the polymeric liner of an electromagnetic flowtube allows the finished electrode to be fused into the liner, again by application of heat and pressure, so as to achieve a seamless interface. This configuration virtually eliminates process fluid leaks around the electrode, while the electrode structure itself exhibits exceptional high temperature stability and corrosion resistance.

REFERENCES:
patent: 3798142 (1974-03-01), Evans
patent: 4214969 (1980-07-01), Lawrance
patent: 4265727 (1981-05-01), Beckley
patent: 4285796 (1981-08-01), Stoner et al.
patent: 4337139 (1982-06-01), Gestaut et al.
patent: 4337140 (1982-06-01), Solomon
patent: 4339322 (1982-07-01), Balko et al.
patent: 4369104 (1983-01-01), Beckley
patent: 4414092 (1983-11-01), Lu et al.

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