These targets are normally available for immediate shipment from stock. Other sizes are available to special order.
| 订货号 | 包装规格 |
| Disc |
| 998-869-54 | 25mm |
半岛bd体育手机客户端
参数
| Diameter[直径] | 25mm |
| Purity[纯度] | 99.997% |
| Thickness[厚度] | 4mm |
| Typical Analysis(典型分析) |
| Al | 0.2 PPM |
| B | 1 PPM |
| Ca | 0.05 PPM |
| Cu | 0.01 PPM |
| Fe | 0.2 PPM |
| Mg | 0.05 PPM |
| Na | 0.02 PPM |
| Si | 1 PPM |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 0.600 - 4.300 @0-100℃ |
| Melting point ( C ) | 3650.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 712.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 80.00 - 240.00 @0-100℃ |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Diamond ) | 542.0 |
| Bulk modulus ( GPa ) ( Graphite ) | 33.0 |
| Hardness - Mohs ( Diamond ) | 10.00 |
| Hardness - Mohs ( Graphite ) | 0.50 - 1.00 |
| Material condition | Diamond |
| Material condition | Graphite |
| Tensile modulus ( GPa ) ( Graphite ) | 4.80 |
| Atomic Properties(原子属性) |
| Atomic number | 6 |
| Atomic weight ( amu ) | 12.01100 |
| Crystal structure | Hexagonal/Diamond |
| Electronic structure | He2s²2p² |
| Ionisation potential ( No./eV ) | 6 / 490 |
| Ionisation potential ( No./eV ) | 4 / 64.5 |
| Ionisation potential ( No./eV ) | 1 / 11.26 |
| Ionisation potential ( No./eV ) | 3 / 47.9 |
| Ionisation potential ( No./eV ) | 2 / 24.38 |
| Ionisation potential ( No./eV ) | 5 / 392 |
| Natural isotope distribution ( Mass No./% ) | 12 / 98.89 |
| Natural isotope distribution ( Mass No./% ) | 13 / 1.11 |
| Photo-electric work function ( eV ) | 4.80 |
| Thermal neutron absorption cross-section ( Barns ) | 0.0034 |
| Valences shown | 2 , 3, 4 |
| Physical Properties(物理性质) |
| Boiling point ( C ) | 5000 |
| Density ( g cm⁻³ ) | 2.250 @20℃ |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) | 1375@0℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.70 |
其他参数
公差
