Introduction
Platinum Ruthenium (Pt/Ru) Sputtering Target is a high-performance noble metal alloy target widely used in electrochemical, catalytic, and microelectronic thin film applications. By combining platinum’s exceptional corrosion resistance and catalytic activity with ruthenium’s enhanced oxidation tolerance and structural stability, Pt/Ru alloys deliver superior performance in demanding environments.
Pt/Ru sputtering targets are particularly important in fuel cell technology, microelectronic contacts, and advanced sensor systems where chemical durability, electrical conductivity, and surface catalytic properties are critical.
Detailed Description
Platinum Ruthenium is a solid-solution alloy system with tunable composition, typically supplied in customized atomic or weight ratios such as Pt:Ru = 90:10, 80:20, or application-specific formulations. The addition of ruthenium significantly enhances platinum’s resistance to carbon monoxide poisoning in electrochemical reactions, making Pt/Ru a benchmark catalyst material in proton exchange membrane (PEM) fuel cells.
Pt/Ru sputtering targets are manufactured through vacuum melting and controlled casting to ensure homogeneous alloy distribution. Due to the high density and noble metal nature of both elements, precise metallurgical processing is essential to achieve:
Uniform elemental distribution
Stable sputtering rates
Low porosity and minimal inclusion content
High mechanical integrity during high-power sputtering
Typical relative density reaches ≥ 99% of theoretical density, reducing the risk of arcing and particle generation.
Available configurations include:
Planar circular targets (1″–8″ diameter and larger custom sizes)
Rectangular targets for inline coating systems
Bonded to copper backing plates for enhanced heat dissipation
Pt/Ru thin films deposited via DC magnetron sputtering exhibit:
Excellent electrical conductivity
High corrosion and chemical resistance
Strong adhesion to oxide and semiconductor substrates
Stable catalytic behavior in electrochemical environments
The alloy’s microstructure and surface composition can be fine-tuned by adjusting sputtering parameters, enabling precise control over catalytic and electrical performance.
Applications
Platinum Ruthenium sputtering targets are widely used in:
Fuel Cell Catalysts – Anode catalyst layers in PEM fuel cells
Electrochemical Sensors – Stable catalytic electrodes
Microelectronic Contacts – Corrosion-resistant conductive layers
Thin Film Electrodes – Electrochemical and energy storage devices
Catalytic Research – Surface reaction and material science studies
MEMS & Microfabrication – Noble metal thin film components
The Pt/Ru system remains a leading material in electrochemical energy conversion technologies.
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Purity | ≥ 99.95% (metals basis typical) | Ensures stable electrical and catalytic performance |
| Composition Ratio | Custom (e.g., Pt 80–90%, Ru 10–20%) | Controls catalytic activity and CO tolerance |
| Density | ≥ 99% of theoretical | Minimizes arcing and improves sputtering stability |
| Diameter | 25 – 200 mm (custom available) | Matches sputtering system holders |
| Thickness | 3 – 6 mm (typical) | Influences target lifetime |
| Bonding | Copper backing plate (optional) | Enhances thermal conductivity |
Comparison with Related Materials
| Material | Key Advantage | Typical Application |
|---|---|---|
| Platinum Ruthenium | Enhanced CO tolerance & catalytic efficiency | Fuel cell anodes |
| Pure Platinum | Excellent corrosion resistance | Microelectronic contacts |
| Ruthenium | High hardness & oxidation resistance | Barrier layers |
| Iridium | Extreme corrosion resistance | Harsh chemical environments |
Compared to pure platinum, Pt/Ru alloys demonstrate superior catalytic activity in hydrogen oxidation reactions, especially under conditions where CO contamination is present.
FAQ
| Question | Answer |
|---|---|
| Can the Pt/Ru composition be customized? | Yes, atomic or weight ratios can be precisely tailored for catalytic or electronic requirements. |
| Is the target compatible with DC sputtering? | Yes, due to its metallic conductivity, DC magnetron sputtering is typically used. |
| Are backing plates recommended? | For larger diameters or high-power applications, copper backing plates improve thermal stability. |
| What industries use Pt/Ru most frequently? | Fuel cell manufacturing, electrochemistry research, semiconductor fabrication, and sensor technology. |
| How is the target packaged? | Vacuum-sealed with protective cushioning and export-grade cartons or wooden crates for secure transport. |
Packaging
Our Platinum Ruthenium Sputtering Targets are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation, ensuring the targets arrive in perfect condition.
Conclusion
Platinum Ruthenium (Pt/Ru) Sputtering Targets provide a robust and highly efficient solution for catalytic and conductive thin film deposition. With customizable composition, high density, and exceptional chemical stability, Pt/Ru alloys support advanced applications in fuel cells, electrochemical systems, and microelectronics.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
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