铱,粉末, Ir, 850μm最大粒度
| 品牌: | Goodfellow | | 纯度含量: | 99.995% | | 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 | | Weight | | 741-167-28 | 1g |
产品参数 | High Purity[纯度] | 99.995% | | Maximum Particle Size[最大粒度] | 850μm | | Weight[重量] | 1g - 2g | | Typical Analysis(典型分析) | | Ba | 5 PPM | | Ca | <1 PPM | | Cr | <1 PPM | | Mg | <1 PPM | | Pt | <1 PPM | | Atomic Properties(原子属性) | | Atomic number | 77 | | Atomic weight ( amu ) | 192.22000 | | Crystal structure | Face Centred Cubic | | Electronic structure | Xe4f¹⁴5d⁷6s² | | Natural isotope distribution ( Mass No./% ) | 191 / 37.3 | | Natural isotope distribution ( Mass No./% ) | 193 / 62.7 | | Photo-electric work function ( eV ) | 4.60 | | Thermal neutron absorption cross-section ( Barns ) | 425.0000 | | Valences shown | 3 , 4 | | Thermal Properties(热性能) | | Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 6.800 @0-100℃ | | Latent heat of evaporation ( J g⁻¹ ) | 3186 | | Latent heat of fusion ( J g⁻¹ ) | 135.00 | | Melting point ( C ) | 2410.00 | | Specific heat ( J K⁻¹ kg⁻¹ ) | 133.0 @25℃ | | Thermal conductivity ( W m⁻¹ K⁻¹ ) | 147.00 @0-100℃ | | Mechanical Properties(机械性能) | | Bulk modulus ( GPa ) ( Hard ) | 371.0 | | Bulk modulus ( GPa ) ( Soft ) | 371.0 | | Hardness - Vickers ( kgf mm⁻² ) ( Hard ) | 650 | | Hardness - Vickers ( kgf mm⁻² ) ( Soft ) | 200 - 300 | | Material condition | Soft | | Material condition | Hard | | Poisson's ratio ( Hard ) | 0.260 | | Poisson's ratio ( Soft ) | 0.260 | | Tensile modulus ( GPa ) ( Hard ) | 528.00 | | Tensile modulus ( GPa ) ( Soft ) | 528.00 | | Tensile strength ( MPa ) ( Hard ) | 1200.00 | | Tensile strength ( MPa ) ( Soft ) | 550.00 - 1100.00 | | Physical Properties(物理性质) | | Boiling point ( C ) | 4130 | | Density ( g cm⁻³ ) | 22.400 @20℃ | | Electrical Properties(电气特性) | | Electrical resistivity ( μOhmcm ) | 5.1@20℃ | | Superconductivity critical temperature ( K ) | 0.1100 | | Temperature coefficient ( K⁻¹ ) | 0.00450 @0-100℃ | | Thermal emf against Pt (cold 0C - hot 100C) ( mV ) | 0.65 |
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