Method of corrosion prevention and corrosion preventive material

Details Method of corrosion prevention and corrosion preventive material Method of corrosion prevention and corrosion preventive material

1997-01-31

1999-11-16

Achutamurthy, Ponnathapura

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

25238952, 106 1405, 428328, 524439, C08K 500, C09K 300, C04B 902

Patent

active

059859571

ABSTRACT:
A corrosion preventive material contains zinc and is applied to the surface of a metal product for preventing corrosion of the product. The material consists essentially of a base material of synthetic resin and 65% or more zinc powder by weight dispersed in the base material, the zinc powder containing 25% or more zinc powder by weight having a grain diameter of or above 150 .mu.m. Alternatively, the corrosion preventive material consists essentially of a base material of synthetic resin and 45% or more zinc powder by weight dispersed in the base material, the zinc powder containing 90% or more zinc powder by weight having a grain diameter of or above 150 .mu.m. A method of corrosion prevention includes the steps of bonding a first metal product to a second metal product with an adhesive corrosion preventive material consisting essentially of a mixture of metal powder for sacrificial corrosion prevention which is baser in a galvanic series than the first metal product and an adhesive resin, and applying an electrodeposition coating to surfaces of the first metal product and the adhesive corrosion preventive material subsequently to the bonding step.

REFERENCES:
patent: 4572868 (1986-02-01), Hosaka et al.
patent: 4728544 (1988-03-01), Asoshina et al.

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