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商品の詳細:
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| ハイライト: | Boron Nitride ceramic parts,Technical Boron Nitride components,BN ceramic industrial parts |
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Boran nitride (BN) (technical)
Boron nitride is a ceramic material that is characterized by relatively high thermal conductivity (can reach up to 90 W / m * K) and resistance to high temperatures. Unlike other ceramic materials, the operating temperature can reach up to 2100 C in a vacuum and an inert environment and 1000 C in an oxygen environment. The material also belongs to the group of refractory materials due to the described properties.
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Properties |
Conditions |
Unit |
Type |
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| Colour | белый | белый | белый | белый | белый | белый | белый | ||
| Bulck density | г/см3 | ≥ 2,20 | ≥ 2,25 | ≥ 2,40 | ≥ 2,80 | ≥ 2,80 | ≥ 2,30 | ≥ 2,63 | |
| Water absorption | — | % | 0 | 0 | |||||
| Flexural strength | МПа | 65 | 65 | 80 | 90 | 90 | ≥ 600 | ≥ 320 | |
| Compressive strength | МПа | 145 | 145 | 175 | 220 | 220 | 150 | ≥ 1000 | |
| Modulus of elasticity | ГПа | — | — | — | — | — | 62 | 55 | |
| Poisson 's Ratio | — | — | — | — | — | 0,2 | — | ||
| Hardness | кг/мм2 | — | — | — | — | — | 1100 | 1224 | |
| Fracture toughness | МПа∙м1/2 | — | — | — | — | — | 5,4 | ≥ 482 | |
| Coefficient of thermal expansion | 25-1000 °C | 10-6 /°C | 2,0 | 2,0 | 2,8 | 3,5 | 2,8 | 1,9 | 5,2 |
| 20-800 °C | 10-6 /°C | 1,9 | 5,2 | ||||||
| 40-800 °C | 10-6 /°C | ||||||||
| Thermal conductivity | — | Вт/м∙K | 35 | 35 | 45 | 30 | 85 | 35 | 90 |
| 25 °C | Вт/м∙K | 35 | 90 | ||||||
| 100 °C | Вт/м∙K | 35 | 90 | ||||||
| Maximum operating temperature | °C | 1000 | 900 | ||||||
| в O2 | °C | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 900 | |
| в вакууме | °C | 1750 | 1800 | 1800 | 1800 | 1800 | — | — | |
| в инертных газов | °C | 1750 | 1800 | 1800 | 1800 | 1800 | — | — | |
| Dielectric constant | 1 МГц | — | 6,8 | 7,3 | |||||
| Volumetric resistance | 25 °C | Ом∙см | ≥ 1013 | ≥ 1013 | ≥ 1012 | ≥ 1012 | ≥ 1013 | ≥ 1013 | ≥ 1014 |
| 300 °C | Ом∙см | ||||||||
| 500 °C | Ом∙см | ||||||||
| Thick film | нет | ||||||||
| Thin film | да | ||||||||
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