ORIGINAL FOUNDRY ALUMINUM 'AL 99.9H' AS NEWER GLAZING MATERIAL,
INSTITUTE OF MODERN LANGUAGES INC WASHINGTON D C
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Methods are described whereby aluminum and its alloys are given a glaze by the Eloxal or Alumilite anodic protection treatments. The treatments impart smoothness and glaze and a hard, thick and transparent oxide layer. Glazing processes currently in use are the Erft process, based on a nitric acid-ammonium hydrogen fluoride solution the Allupol II R5 bright dip process, based on phosphoric and nitric acids the Aluflex process, based on sulfuric and chromic acids and the Brytal process, based on a trisodium and soda solution. Relationships were determined between glaze and glazing process in Eloxal-treated original-foundry quality alloy Erftal and the alloys with magnesium, the Raffinals.
- Coatings, Colorants and Finishes
- Metallurgy and Metallography
- Fabrication Metallurgy