abstract |
THE ALUMINA COATING IS PRODUCED BY SLURRYING CRO2 PARTICLES IN WATER, IN A SOLUTION OF AN ALUMINM-CONTAINING SALT, IN AN ACID, OR IN A BASE, AND ADDING WITH AGITATION IN ANY ORDER, SEQUENTIALLY OR SIMULTANEOUSLY, A SOLUTION OF AT LEAST ONE OF AN ALUMINUM-CONTAINING SALT, AN ACID OR A BASE IN SUFFICIENT QUANTITY TO ESTBLISH AND MAINTAIN, THE PH OF THE SLURRY IN THE RANGE OF 4 TO 10. |