Tungsten molybdenum products are the key carriers for sapphire long crystal. Using tungsten and molybdenum as materials can protect the purity of sapphire very well, because tungsten and molybdenum are refractory metals with high temperature resistance, which are not easy to react with sapphire.
Ikal-200 crystal growth furnace uses tungsten crucible, molybdenum crucible, molybdenum heat shield and tungsten heating body to volatilize molybdenum and tungsten atoms at high temperature. Of course, there is no lack of using tungsten and molybdenum crucible as heating body. In contrast, the selection of process and the setting of temperature field are very key factors. Different crystal growth methods use different crucibles. For example, the tungsten crucible is generally used in the bubble method (KY), and the molybdenum crucible is generally used in the heat exchange method (HEM). Because the heat exchange method finally needs to smash the pot to get the single crystal, and the molybdenum crucible is the cheapest. According to the manufacturing process of crucible, it can be divided into pressing and sintering crucible and spinning crucible. The quality of pressing and sintering crucible is low, the purity and density are low, the service life is relatively short, and the price is relatively cheap. Spinning crucible has high quality, purity and density, long service life and high price. In China, sintering crucible is usually used in long crystal furnace.
Our company produces, processes and sells tungsten and molybdenum crucibles of different sizes and specifications. Welcome to inquire!
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