名称：Goodfellow（顾特服）
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硒,块, Se, 3mm Max. Lump Size, Pellets, 5N
材料 >> 金属材料
| 品牌: | Goodfellow |
| 纯度含量: | 99.999% |
| 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 |
| Weight | |
| 107-634-56 | 20g |
| 454-316-47 | 50g |
| 789-555-32 | 100g |
| 929-126-25 | 200g |
| 253-060-93 | 300g |
| 912-152-02 | 400g |
| 563-997-02 | 500g |
| 363-694-29 | 1000g |
| 619-587-24 | 1500g |
| 167-039-44 | 2000g |
产品参数
| High Purity[纯度] | 99.999% |
| Maximum Lump Size[] | 3mm |
| Product Shape[形状] | Pellets |
| Weight[重量] | 20g - 2000g |
| Typical Analysis(典型分析) | |
| Ag | 0.2 PPM |
| Al | <0.1 PPM |
| B | <0.1 PPM |
| Ba | <0.1 PPM |
| Be | <0.01 PPM |
| Bi | <0.05 PPM |
| Ca | 0.2 PPM |
| Cd | <0.01 PPM |
| Co | <0.1 PPM |
| Cr | <0.05 PPM |
| Cu | 0.6 PPM |
| Fe | 1 PPM |
| Li | <0.01 PPM |
| Mg | 0.06 PPM |
| Mn | <0.01 PPM |
| Mo | <0.1 PPM |
| Na | <0.1 PPM |
| Ni | <0.1 PPM |
| Pb | <0.1 PPM |
| Si | <1 PPM |
| Sn | <0.1 PPM |
| Te | <20 PPM |
| Ti | <0.05 PPM |
| V | <0.05 PPM |
| Zn | <0.5 PPM |
| Thermal Properties(热性能) | |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 37.000 @0-100℃ |
| Latent heat of evaporation ( J g⁻¹ ) | 333 |
| Latent heat of fusion ( J g⁻¹ ) | 69.00 |
| Melting point ( C ) | 217.00 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 321.0 @25℃ |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.50 @0-100℃ |
| Atomic Properties(原子属性) | |
| Atomic number | 34 |
| Atomic weight ( amu ) | 78.96000 |
| Crystal structure | Hexagonal |
| Electronic structure | Ar3d¹⁰4s²4p⁴ |
| Ionisation potential ( No./eV ) | 4 / 42.9 |
| Ionisation potential ( No./eV ) | 6 / 81.7 |
| Ionisation potential ( No./eV ) | 5 / 68.3 |
| Ionisation potential ( No./eV ) | 1 / 9.75 |
| Ionisation potential ( No./eV ) | 3 / 30.8 |
| Ionisation potential ( No./eV ) | 2 / 21.2 |
| Natural isotope distribution ( Mass No./% ) | 76 / 9.0 |
| Natural isotope distribution ( Mass No./% ) | 82 / 9.2 |
| Natural isotope distribution ( Mass No./% ) | 74 / 0.9 |
| Natural isotope distribution ( Mass No./% ) | 80 / 49.8 |
| Natural isotope distribution ( Mass No./% ) | 77 / 7.6 |
| Natural isotope distribution ( Mass No./% ) | 78 / 23.5 |
| Photo-electric work function ( eV ) | 5.90 |
| Thermal neutron absorption cross-section ( Barns ) | 12.2000 |
| Valences shown | -2 ,4,6 |
| Physical Properties(物理性质) | |
| Boiling point ( C ) | 685 |
| Density ( g cm⁻³ ) | 4.790 @20℃ |
| Mechanical Properties(机械性能) | |
| Bulk modulus ( GPa ) ( Polycrystalline ) | 8.3 |
| Hardness - Mohs ( Polycrystalline ) | 2.00 |
| Material condition | Polycrystalline |
| Poisson's ratio ( Polycrystalline ) | 0.447 |
| Tensile modulus ( GPa ) ( Polycrystalline ) | 58.00 |
| Electrical Properties(电气特性) | |
| Electrical resistivity ( μOhmcm ) | 12@20℃ |
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