Zinc alloy sacrificial anode, referred to as: zinc anode, this product is approved by China Classification Society (CCS), and the quality standard is in line with GB/T4950-2002 "zinc-aluminum-cadmium alloy sacrificial anode" standard production. The anode used for pipelines also conforms to SY/T0019-97 "Design Specification for Cathodic Protection of Sacrificial Anodes for Buried Steel Pipelines". Zinc anode chemistry meets US MIL-A-18001H and ASTM-B418 (Type 1) standards.
The zinc-aluminum-cadmium series (ZAC series) sacrificial anode is cast by alloying with higher-purity zinc, aluminum and cadmium.
Aluminum-zinc-indium series (AZI series) sacrificial anodes are cast by alloying high-purity aluminum, zinc, indium and other metals.
Chemical composition of zinc alloy sacrificial anode for ship body parts
| Elements | Zinc alloy | High purity zinc |
| Al | 0.1~0.5 | ≤0.005 |
| Cd | 0.025~0.07 | ≤0.003 |
| Fe | ≤0.005 | ≤0.0014 |
| Pb | ≤0.006 | ≤0.003 |
| Cu | ≤0.005 | ≤0.002 |
| Others | Total≤0.1 | —— |
| Zn | Margin | Margin |
Features of zinc alloy sacrificial anode for ship body parts
1. Zinc alloy sacrificial anode has low self-solubility, high current efficiency, and good self-regulation performance of anode current.
2. The protection period is longer, up to 20 to 30 years, and the phenomenon of "over-protection" generally does not occur.
Application of zinc alloy sacrificial anode for ship body parts
Zinc alloy sacrificial anodes are suitable for sacrificial anodes for cathodic protection of metal components in electrolytes such as seawater, fresh seawater, and soil with a temperature below 50°C and a resistivity below 15Ω·m.
The products are mainly used for anti-corrosion of marine hulls, ballast tanks, marine engineering, drilling platforms, port facilities and dock facilities, condensers of seawater media, water pumps, and soil media pipelines, cables, slideways, etc. Including sacrificial anodes for cathodic protection of steel structures such as ships, port facilities, buried metal pipes, storage tanks, seawater cooling systems, etc.
