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PtRh Alloy
Platinum-Rhenium (Pt-Re) Alloy
A high-reliability alloy combining platinum and rhenium for advanced thermocouples and high-temperature applications.
The Pt-Re alloy is commonly used in thermocouples and high-precision sensors. Typically composed of approximately 90% platinum and 10% rhenium, it offers a melting point around 1700°C, very low electrical resistivity, and excellent thermal conductivity.
| Property | Value | Notes |
|---|---|---|
| Composition | Pt ~90%, Re ~10% | Optimized for thermocouple performance |
| Melting Point | ~1700°C | High enough for extreme applications |
| Electrical Resistivity | ~12 µΩ·cm | Very low resistivity for high-precision sensing |
| Thermal Conductivity | ~60 W/m·K | Efficient heat dissipation |
| Mechanical Strength | ~200 MPa | Provides adequate durability |
Conceptual 3D Microstructure
A simplified 3D model displaying alternating layers of platinum (silver-gray) and rhenium (bright red).
Applications
High-Temperature Sensors
Critical for thermocouples and precise high-temp measurement devices.
Advanced Electronics
Offers low resistivity interconnects for high-precision circuitry.
Catalytic Converters
Enhances reaction efficiency in catalytic systems.
Industrial Components
Delivers robust performance in high-temperature, high-stress environments.
Element Breakdown
Symbol: Pt
Atomic Number: 78
Key Role in Pt-Re: Provides excellent conductivity and corrosion resistance.
Fun Fact: Platinum is one of the most stable and noble metals.
Symbol: Re
Atomic Number: 75
Key Role in Pt-Re: Enhances durability and high-temperature stability.
Fun Fact: Rhenium significantly improves the performance of platinum in extreme conditions.
Performance Comparison: Melting Point
Comparison of melting points among popular alloys. The Pt-Re alloy's ~1700°C melting point suits high-temperature sensor applications.
Manufacturing & Production
The Pt-Re alloy is produced by melting high-purity platinum and rhenium under controlled conditions. Although its high melting point requires specialized processing, the alloy delivers outstanding performance in thermocouples and high-precision sensors.
Safety & Handling
- Handle molten Pt-Re with appropriate protective gear to avoid burns.
- Work in a well-ventilated area and follow standard safety protocols.
- Both platinum and rhenium are relatively stable, but proper handling is essential due to high processing temperatures.