Titanium anodes for chrome plating

Manufacture of Iridium-Tantalum Coated Titanium Anodes

Iridium-tantalum coated titanium anodes are commonly used products in the field of metal plating. They are produced by coating a mixture of iridium and tantalum oxide onto a titanium substrate.

The manufacturing process typically consists of two steps. Firstly, the titanium substrate needs surface treatment such as sandblasting or acid cleaning to remove impurities and oxides, enhancing the adhesion of the coating. Then, after surface treatment, the mixture of iridium and tantalum oxide is deposited onto the titanium base, which can be achieved through methods like physical vapor deposition (PVD) or chemical vapor deposition (CVD). The thickness and composition of the coating can be adjusted according to different usage requirements and process needs.

The platinum coating on platinum-plated titanium anodes can improve the product’s electrochemical stability and corrosion resistance while enhancing its conductivity. Platinum exhibits excellent chemical stability and corrosion resistance, remaining stable in strong acids and oxidants, effectively protecting the surface from corrosion.

Process Steps: Firstly, surface treatment is performed to remove impurities and oxide films. Then, immersion in platinum plating solution for electroplating. During electroplating, platinum ions deposit on the surface, forming a uniform platinum coating. The thickness and uniformity of the platinum coating have a significant impact on electrochemical and corrosion resistance properties, hence precise manufacturing processes are required.

General Specifications:

Material: Grade 1 or Grade 2 titanium substrate

Coating: Mixed metal oxide (MMO) coating of iridium, tantalum, or platinum

Shape: Linear, plate-shaped, or strip-shaped

Current density: Typically 5-300 A/m2, depending on specific application and electrolyte chemical composition

Operating temperature: Typically up to 60-70°C but may vary depending on the electrolyte used

Connections: Titanium or copper terminals

Dimensions: Vary according to plating tank size and plating process used

It should be noted that the specific specifications of this product may vary depending on the specific requirements and conditions of the plating process. It is advisable to consult qualified engineers or suppliers to determine the most suitable specifications for a given application.

Process

In the chrome plating process, titanium anodes exhibit excellent corrosion resistance and electrochemical stability, enabling long-term use in harsh environments such as strong acids, alkalis, and high temperatures. During chrome plating, oxygen and chromium ions are generated in the electrolyte solution through electrochemical reactions, causing chromium ions to be reduced to metallic chromium and deposited on the surface of the workpiece to form a chromium layer.

The manufacturing material of titanium anodes for chrome plating is titanium plate, processed through cutting, welding, drilling, polishing, and other processes. The specifications and models of titanium anodes for chrome plating vary according to process requirements and usage scenarios. Common specifications include diameters of 1.5mm, 2.0mm, 3.0mm, with lengths of around 1000mm. Additionally, the surface of titanium anodes usually requires oxidation treatment to improve their corrosion resistance and electrochemical stability.