Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1983-09-01
1986-11-18
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204197, 501141, 501142, 501143, 501144, 501151, 501154, C23F 1300
Patent
active
046234357
ABSTRACT:
A backfill composition for use with sacrificial magnesium anodes used in the cathodic protection of ferrous metal structures comprises an anion-releasing material capable of releasing fluoride, phosphate or zincate ions in water-soluble form and a magnesium-transporting adjuvant capable of transporting magnesium ion by ion exchange conduction. Suitable anion-releasing materials include calcium fluoride, cryolite, magnesium silicate and sodium silicofluoride, while suitable magnesium transporting adjuvants include bentonite clay, calcium sulfate, calcium carbonate, calcium hydroxide and magnesium silicate.
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Hinshaw Gary D.
Nebgen John W.
Columbia Gas System Service Corporation
Millard Sidney W.
Tung T.
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