Ultrasonic Spray Coating for Titanium Plates, Mesh and Complex Anode Geometries

Titanium anodes are manufactured in several forms to match the needs of electroplating, water treatment, chlor-alkali production, hydrogen technologies and other electrochemical processes. Flat plates offer a straightforward mounting surface, while expanded mesh and perforated structures provide different open-area and flow characteristics. Tubular, rod-like and porous designs may be selected for specialized cells. Whatever the geometry, the catalytic coating must be applied with suitable coverage, loading and adhesion. Ultrasonic spray coating gives manufacturers a configurable way to develop coating processes for different titanium anode structures.

Why electrode geometry changes the coating challenge

Flat titanium plates

Flat plates are generally the simplest geometry for programmed spray deposition, but large dimensions introduce their own challenges. The nozzle must follow a consistent path over the entire active area, with appropriate overlap between adjacent passes. Edge regions can receive a different spray history from the center, and plate flatness or fixture design can affect the nozzle-to-surface distance. A repeatable process therefore requires controlled positioning, masking and inspection across the full plate.

Expanded mesh and perforated titanium

Mesh electrodes have front and back surfaces, strand intersections and openings. A spray path designed only for a flat sheet may not provide the desired coverage around every strand. Nozzle angle, part orientation, rotation or a second-side coating step may be evaluated to reach the required surfaces. The objective is not simply to fill every opening with coating liquid; it is to achieve the specified active-layer coverage without unnecessary pooling or material accumulation. Trials should examine strand edges and intersections under magnification.

Rods, tubes and formed parts

Cylindrical or formed titanium substrates may require rotary fixtures or coordinated motion between the part and nozzle. The process must maintain a consistent stand-off distance and spray angle as the surface moves. Complex shapes can also create shadowed regions. A practical development plan maps the accessible coating zones, identifies any areas that require a separate pass and confirms that the thermal process is compatible with the part’s dimensions and mechanical tolerances.

What ultrasonic atomization contributes

Ultrasonic spray nozzles use high-frequency vibration to atomize a liquid precursor into fine droplets. The controlled atomization and metered liquid feed allow process engineers to adjust deposition without depending solely on high-pressure liquid spraying. With a suitable carrier-gas flow and motion platform, the droplets can be distributed along defined paths. This can help reduce overspray, improve transfer efficiency and support more repeatable thin-film deposition. Actual results depend on liquid properties, nozzle selection, substrate temperature, exhaust design and the coating recipe.

For titanium anodes, the liquid may contain iridium-based, ruthenium-based or mixed-metal-oxide precursors. The deposited layer is typically dried and thermally converted according to the formulation. Multiple thin coats may be used to build the target loading progressively. This makes it possible to tune the number of passes and intermediate heat treatments while checking the developing coating. The process should be optimized for each chemistry rather than applying one set of settings to every precursor.

Building a process that scales to large titanium plates

Cheersonic can provide ultrasonic spray coating solutions for large titanium plate anodes with dimensions up to 1.5 m × 2 m, subject to equipment configuration and project review. Large-area production requires coordinated control of nozzle motion, liquid delivery, substrate handling and process timing. Depending on throughput and coating requirements, manufacturers may evaluate a single-nozzle scanning system, a multi-nozzle arrangement or a customized motion platform. The design should also provide access for loading, unloading, masking, drying and inspection.

A scale-up plan should begin with representative coupons and then progress to subassemblies or full-size substrates. During this process, engineers can compare coating mass, surface appearance and electrochemical response at different locations. The same formulation may behave differently on a plate and on mesh because liquid drainage, local heating and accessible surface area are not identical. Recording the settings and sample orientation is essential for transferring a successful trial to production.

Practical quality checks for different anode types

Define acceptance criteria before coating begins. For plates, inspect coating distribution across a grid that includes the center, perimeter and corners. For mesh, include strand faces, intersections and representative internal regions. For rods or tubes, sample multiple angular and axial positions. Depending on the application, quality checks may include coating mass per area, thickness mapping, microscopy, adhesion assessment, chemical composition and electrochemical testing. No single measurement replaces application-specific qualification.

Process documentation should capture titanium grade, substrate preparation, precursor batch, liquid flow, atomization settings, carrier gas, substrate temperature, scan speed, pass overlap, drying intervals and final thermal treatment. These records help distinguish a material issue from a deposition or heat-treatment issue and support repeatability between batches.

Plan your titanium anode coating trial with Cheersonic

Cheersonic supports research teams and manufacturers developing ultrasonic spray coating processes for titanium plates, mesh and other electrode structures. Our engineering team can review substrate drawings, coating chemistry, target loading, throughput and production constraints. Learn more about our ultrasonic coating equipment solutions.

For a titanium anode coating project, including large plates up to 1.5 m × 2 m, contact market2@cheersonic.com. We welcome R&D teams and production manufacturers to discuss their requirements and arrange an ultrasonic spray sample test.