激光切割机热解氮化硼PBN陶瓷基板
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激光切割机热解氮化硼PBN陶瓷基板
Boron nitride BN ceramic：
OLED坩埚是用于OLED和CIGS蒸镀技术的PBN坩埚. 凭借其超高纯度, 化学惰性, 优异的耐高温性和高温稳定性, 广泛应用于金属和半导体蒸发.
we produce several advanced ceramic parts with fine engineered ceramics, and one of those is Hexagonal Boron Nitride. We generally choose a form known as hexagonal boron nitride (六方氮化硼). Hexagonal BN is a composite of boron and nitrogen that is both heat and hemically resistant. It is the most robust crystalline type of boron nitride, along with graphite. Since it has a composition identical to graphite, although you will even hear it named “white graphite” since it is white in colour. What is more, hardness of hexagonal BN is similar to graphite, so it is very easily to machine the parts into required shape, only one small tip,machining work should be process in dry conditions with no cooling liquid. 还, visible dust can be created during machining, so wearing mask and goggle is necessary.
氮化硼陶瓷具有化学性质，具有比较好的导热性, low thermal expansion and microwave clarity.Boron nitride can be quickly machined as well. 而且, 玻璃, 盐和其余液态金属是不润湿的. 这确保了这些化合物都不会被弄湿, 而且它对化学攻击的免疫力要高得多。六方氮化硼 (六方氮化硼) 在高温条件下表现良好，在空气温度高达 900 摄氏度, 在真空中 1,900 摄氏度和惰性环境中 2,000 摄氏度. BN 也具有自润滑性,因此, 它不需要使用粘在层中的气体或水分子. 因为这, 在真空中, 这对于航空航天应用很重要, 氮化硼 (国阵) 可以完美工作.
产品特点
优良的电绝缘体 | 最大限度. 2000 °C 使用温度 | 高抗热震性 |
低热膨胀系数 | 熔融金属低润湿性 | 易于机械加工 |
材料特性
技术参数 | Si3N4陶瓷的典型应用 | HPBN | PBN |
密度 | 克/立方厘米 | 2.2~2.3 | 2.1-2.19 |
吸水率 | % | 0 | 0 |
灰色和灰黑色 | 灰色和灰黑色 | (Moh’s=2) | (Knoop=691) |
抗弯强度 (20°C) | 兆帕 | 100 | 243.63 |
抗压强度 (20°C) | 兆帕 | 287 | — |
灰色和灰黑色 (20°C) | W/m.K | 35 | 43-60 |
抗热震性 (20°C) | Δ T(C) | — | — |
最高使用温度 | °C | 2400 | 2200 |
体积电阻率 (25°C) | Ω.cm | 10 ^ 8~10 ^ 13 | 3.11×10 ^ 11 |
