CORROSION RESEARCH ROUND‐UP

Paint as an anticorrosive. Results depend on the preparation of the surface and on the quality of the paint. Investigations are described into the adhesive and weathering qualities of various materials, in particular of aluminium, exposing the test panels to both land and sea air. Degreasing and mechanical, chemical and electrolytical methods of cleaning the surface have been tried and compared and primers of a large variety have been tested. The primers consist of zinc chromates, phosphates and synthetics. Top coats of glycerophthalic, nitrocellulosic and other, for instance, fatty, combinations have been applied. Anti‐fouling paints have been applied to wood. It is shown that best results are obtained when the various treatments are harmonised.—(A. Guilhaudis and R. Bourbon, Revue de l'Aluminium, 1954, 31 (206), 7–11 and (207) 47–52.)