1. Introduction Our sacrificial anode (abbreviation: aluminum anode) according to GB / T 4948-2002 research and production of aluminum alloy suitable for seawater ships, machinery and equipment, ballast tanks, tank walls, coastal facilities, submarine pipes, steel pile wharf, offshore platforms, cables and other facilities of the cathodic protection of metal corrosion. 2. The chemical composition of anodic aluminum species Zn In Cd Sn Mg Si Ti impurities, not more than Al Si Fe Cu Al-Zn-In-Cd 2.5-4.5 0.018-0.050 0.005-0.02 - - - - 0.10 0.15 0.01 balance Al-Zn -In -Sn 2.2-5.2 0.020-0.045 - 0.018-0.035 - - - 0.10 0.15 0.01 balance Al-Zn-In -Si 5.5-7.0 0.025-0.035 - - - 0.10-0.15 - 0.10 0.15 0.01 balance Al-Zn -In -Sn-Mg 2.5-4.0 0.020-0.050 - 0.025-0.075 0.50-1.00 - - 0.10 0.15 0.01 balance Al-Zn-In -Mg-Ti 4.0-7.0 0.020-0.050 - - 0.50-1.50 - 0.01-0.08 0.10 0.15 0.01 3. aluminum anode electrochemical performance margin performance indicator species open circuit potential -V (SCE) working potential -V (SCE) actual capacity A? h / kg current efficiency% dissolved aluminum anode common condition 1.10-1.18 1.05 -1.12 ≥2400 ≥85 corrosion product is easy to fall off, the surface uniformly dissolved. Efficient 1.10-1.18 1.05-1.12 ≥2600 ≥90 anodized aluminum alloy anode high activation 1.45-1.50 1.40-1.45 ≥2080 ≥70 4. Common aluminum bracelet alloy sacrificial anodes Specifications Item Specification ID × width × thickness × gap mm Weight Kg / pair mm bracelet core specification aluminum alloy sacrificial anodes Φ1020 × 200 × 35 × 51 68 5 × 50 bracelet aluminum alloy sacrificial anodes Φ819 × 60 × 30 × 51 13 5 × 25 bracelet aluminum alloy sacrificial anodes Φ624 × 80 × 30 × 51 17 5 × 50 bracelet aluminum alloy sacrificial anodes Φ513 × 100 × 30 × 51 17 5 × 50 bracelet aluminum alloy sacrificial anodes Φ487 × 200 × 45 × 51 41 5 × 50 bracelet aluminum alloy sacrificial anodes Φ470 × 480 × 25 × 51 50 5 × 50 bracelet aluminum alloy sacrificial anodes Φ436 × 480 × 38 × 51 70 5 × 50 bracelet aluminum alloy sacrificial anodes Φ420 × 413 × 45 × 51 69 5 × 50 bracelet aluminum alloy sacrificial anodes Φ385 × 150 × 59 × 51 32 5 × 50 bracelet aluminum alloy sacrificial anodes Φ335 × 505 × 38 × 51 56 5 × 50 bracelet aluminum alloy sacrificial anodes Φ280 × 250 × 45 × 51 29 5 × 50 bracelet aluminum alloy sacrificial anodes Φ252 × 250 × 45 × 51 26 5 × 50