AGRO INDUSTRI SURABAYA PHONE. 031 3989496, 082129847777, 082129846666 FAX. 031 3980197, EMAIL: INDUSTRI2034@ GMAIL.COM 21/ 11/ 2015 Berikut Penawaran kami: ZINC & ALUMINUM ANODES ALUMINIUM ALLOY SACRIFICIAL ANODES HAVE AN ELECTRO-CHEMICAL PROPERTY THAT MAKES THEM SUITABLE FOR USE IN CATHODIC PROTECTION SYSTEMS. AN OXIDE FILM CAN DEVELOP ON THE SURFACE OF THE ALUMINIUM THAT MAKES THE MATERIAL PASSIVE. ALUMINIUM ALLOYS HAVE BEEN DEVELOPED SO THAT ONE OR MORE OF THE ALLOYS DISRUPTS THE PROTECTIVE OXIDE LAYER AND MAKES THE ALLOY ANODIC TO PROMOTE EVEN CORROSION WHEN THE ANODE IS PLACED IN THE ELECTROLYTE. ZINC HAS BEEN USED AS A SACRIFICIAL ANODE MATERIAL IN SEAWATER SINCE 1824 BUT MODERN ZINC ANODES USED FOR CATHODIC PROTECTION ARE CAST FROM HIGH PURITY ZINC ( 99.9% ) ALLOYED WITH ALUMINIUM AND CADMIUM WITH LIMITATIONS ON THE LEVELS OF LEAD, IRON AND COPPER. PHONE. 031 3989496, 082129847777, 082129846666 FAX. 031 3980197, EMAIL: INDUSTRI2034@ GMAIL.COM 21/ 11/ 2015