1. Introduce
– A member of the platinum group, has good high temperature stability, high melting point (2334℃) and boiling point (4150℃)
– Insoluble in most acids, does not react with oxygen at room temperature, and is insoluble in royal water below 100℃
– Mainly used as a hardening agent to increase the hardness of platinum and palladium, and to improve the corrosion resistance of titanium
– Effects of Ru alloying elements: Improves hardness of platinum and palladium, improves corrosion resistance of titanium
2. Property
– Good corrosion resistance, high temperature corrosion resistance, heat resistance, wear resistance
[Ru Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) |
|---|---|
| 495 | 372 |
[Ru Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Electrical resistivity (µΩ∙㎝) | Specific Heat (J/kg∙℃) | Thermal Conductivity (W/mK) | Coefficient of Thermal Expansion (µm/m°C) |
|---|---|---|---|---|---|
| 12.3 | 2334 | 13.6~16.5 | 238 | 116 | 9.6 |
3. Application
– Thick film resistors, electrical contacts, chemical catalysts, hard disks, jet engine turbine blade coatings, semiconductor devices, transistors, plating, radiation therapy
(1) Thick film resistors / (2) Hard disks / (3) Semiconductor devices / (4) Electrical contacts
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