Quartz crucible with high purity and strong thermo-stability is an essential component in the process of the mono-crystal silicon pulling. The performance of the quartz crucible has great influence on the crystallization rate. Ferrotec (China) crucible division has been around how to improve the crystallization rate by continuous technological innovation and has made great breakthrough. In order to satisfy diversity production needs of the customers, AQMN had developed 4 series quartz crucible to reply different crystal pulling technology. For the current diameter size, AQMN can coverage 14 to 32 inch and has the technical ability to customize larger size according to the customer’s requirement. On the supporting process, we took 3 years to develop a fully automatic line to ensure the quality stable.
Quartz Crucible Series
AQM-10 series: Natural quartz crucible with transparent layer covered in the inner layer.
AQM-20 series: High purity natural quartz crucible, add high level natural sand on the basis of AQM-10 and the purity in the inner surface will be higher.
AQM-30 series: Synthetic crucible with higher purity in the inner surface.
AQM-40 series: Natural quartz crucible with inner surface crystallization, adapt to re-charging process and long time using.
Apply to: the mono-crystal silicon pulling of solar energy.
Apply to: the mono-crystal silicon pulling of semi-conductor & solar energy. Main type: AQM-21.
Apply to: the mono-crystal pulling of semi-conductor. Main type: AQM-31.
Apply to: the mono-crystal pulling of solar energy & semi-conductor. Main type: AQM-42
In order to achieve less Micro-bubble, Ferrotec had developed continuously on the fusion process & equipment characteristic. At present the main type for each series all adopt less bubbled technology.
Less bubble in the transparent layer
As for inner surface crystallization, Ferrotec developed new coating technology. AQM-40 series are using this technology.
Inner surface crystallization
As for the highly purification, Ferrotec choose high purity raw materials, metal elements are strictly controlled in all process. Fully automatic production line and cleaning room are introduced in the supporting process, to ensure no impurity contamination in the productive process and the purity of quartz crucible.
Inner surface highly purification
The Advantage of Ferrotec Quartz Crucible
Less Micro-bubble in the transparent layer, inner surface crystallization & inner surface purification, these 3 technical points are the secret of Ferrotec to produce high quality quartz crucible.
Less Micro-bubble in the transparent layer can make the crucible adapt long time crystal pulling.
Inner surface crystallization is a compact crystallizing layer which formed on the inner surface to prevent crystallography falling off and isolate the reaction of quartz crucible and silicon liquid. It will promote the crystallization rate of mono-crystal silicon;
Inner surface purification can make the inner surface not easily to form devitrification and make no influence on mono-crystal silicon’s crystallization.