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. Port Engineering facility, marine engineering facilities aluminum sacrificial anodes Specifications Product Name Model Specification / mm Weight / kg A × (B1 + B2) × C aluminum sacrificial anodes AI-1 2300 × (220 + 240) × 230 310.0 aluminum sacrificial anodes AI-2 1600 × (200 + 210) × 220 190.0 aluminum sacrificial anodes AI-3 1500 × (170 + 200) × 180 130.0 aluminum sacrificial anodes AI-4 900 × (150 + 170) × 160 58.0 aluminum sacrificial anodes AI-5 1500 × (148 + 178) × 170 120.0 aluminum sacrificial anodes AI-6 850 × (180 + 220) × 180 85.0 aluminum sacrificial anodes AI-7 800 × (200 + 280) × 150 80.0 aluminum sacrificial anodes AI- 8 700 × (160 + 220) × 180 72.5 aluminum sacrificial anodes AI-9 1250 × (115 + 135) × 130 56.0 aluminum sacrificial anodes AI-10 1000 × (115 + 135) × 130 46.0 aluminum sacrificial anodes AI -11 750 × (115 + 135) × 130 35.0 aluminum sacrificial anodes AI-12 500 × (115 + 135) × 130 23.0