Titanium Plate Platinum Coating

Chloroplatinic Acid Ultrasonic Spraying Process for Titanium Plate Platinum Coating

In the fields of catalytic electrode preparation and precision electronic component manufacturing, platinum based coating treatment on titanium plate surface is a key technology to improve material performance. Among them, the process of preparing chloroplatinic acid coating on titanium plate surface using ultrasonic spraying machine is widely used due to its good coating uniformity and high platinum utilization rate. This process can form a functional coating with strong adhesion and stable performance on the surface of titanium plates by precisely controlling the material ratio and operating parameters, laying a high-quality foundation for subsequent processing.

Before implementing the process, it is necessary to complete the dual work of material preparation and titanium plate pretreatment. The core raw materials include chloroplatinic acid, solvents, and titanium plates to be treated. Among them, chloroplatinic acid needs to be selected with a platinum content of 37.7%, and the single spraying dosage should be controlled at around 330mg. This dosage can ensure coating performance and avoid material waste. The solvent can be selected according to actual needs, either isopropanol or 1% nitrocellulose solution, with a fixed dosage of 2.5mL. The former has a fast dissolution rate and moderate volatility, while the latter can enhance the adhesion between the coating and the titanium plate. Therefore, it needs to be screened reasonably according to the subsequent usage scenarios. The pre-treatment of titanium plates requires three steps: grinding, degreasing, and acid washing. First, the surface oxide layer is removed with fine sandpaper, followed by ultrasonic degreasing with anhydrous ethanol for 15 minutes. Finally, it is soaked in dilute hydrochloric acid for activation to ensure a clean and impurity free surface, creating conditions for coating adhesion.

The material preparation process should pay attention to precision and uniformity. Slowly add the weighed chloroplatinic acid into the solvent, and use a magnetic stirrer to stir continuously at a speed of 300r/min for 20 minutes to ensure complete dissolution of the solute, forming a clear and transparent spray solution. During the mixing process, it is necessary to avoid introducing bubbles. If bubbles appear, they can be left to stand for 5 minutes until they naturally dissipate to prevent the formation of pinhole defects during spraying. The prepared spray solution should be used within 2 hours to avoid long-term storage that may cause component precipitation and affect coating quality.

The spraying operation is carried out using an ultrasonic spraying machine, with the core principle of “multiple thin layer spraying, gradient heating and drying”. Fix the preprocessed titanium plate on the spraying workbench, adjust the distance between the nozzle and the plate surface to 15cm, set the spraying pressure to 0.3MPa, and perform reciprocating spraying at a constant speed of 5cm/s. After a single spray, immediately send it to an oven and dry it at 100 ℃ for 3 minutes. Wait for it to cool to room temperature before proceeding to the next spray. Repeat this process 5-6 times. Multiple thin layer spraying can effectively avoid the sagging phenomenon caused by a single thick coating. A drying temperature of 100 ℃ can achieve rapid solvent evaporation while preventing the decomposition of chloroplatinic acid, ensuring the stability of the coating composition.

The entire process requires attention to environmental control, and the operating space should be kept clean and dry. The relative humidity should be controlled at 40% -60% to avoid dust pollution of the spraying solution. Operators are required to wear corrosion-resistant gloves and protective goggles to prevent the chloroplatinic acid solution from coming into contact with the skin. After the spraying is completed, the titanium plate needs to be left to stand for 30 minutes. After the coating is completely cured, subsequent testing and processing can be carried out to ensure that the final product meets the performance requirements. This process maximizes the material properties of chloroplatinic acid and titanium plate through scientific parameter control and standardized operation, providing high-quality functional materials for related fields.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

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