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ll921

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[½»Á÷] ÇóÖú°ïæÐÞ¸Ä Ó﷨ʱ̬ÎÊÌâ

During the ZTO grow procedure, feeding rod is melted, the gas from hole of low-density rod dissolved in the melt to form gas bubble. When a high rotation rate is applied, due to the centrifugal force effect, the gas bubbles are moved to the center axis and coalesced to grow. With the crystal growing, the bubble inclusions are formed. While a lower rotation rate is applied, gas bubbles move to the upper part and go out of the melt due to the diffusion. So a lower rotation is effective to suppress the formation of bubble inclusion. It can be also found that there is no low-angle grain boundary in the crystal grown at lower rotation rate.
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liuxinlin-yj

½ð³æ (ÕýʽдÊÖ)

ll921(½ð±Ò+30, ·­ÒëEPI+1): 2010-04-18 10:03
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Originally posted by ll921 at 2010-04-14 15:39:51:
During the ZTO grow procedure, feeding rod is melted, the gas from hole of low-density rod dissolved in the melt to form gas bubble. When a high rotation rate is applied, due to the centrifugal for ...

During the ZTO grow procedure, feeding rod is melted, the gas from hole of low-density rod dissolved in the melt to form gas bubble. When a high rotation rate is applied, due to the centrifugal force effect, the gas bubbles are moved to the center axis and coalesced to grow (large) (»òɾµôgrow£©. With the crystal growing, the bubble inclusions £¨are£©form£¨ed£©. While £¨when£©a lower rotation rate is applied, gas bubbles move£¨ to theɾµô£© upper£¨É¾µô part£© and diffuse  £¨É¾µô go) out  of the melt(ɾµô due to the diffuseion £© . So a lower rotation is effective to suppress £¨É¾µôthe formation of£© bubble inclusion. It can be also found that there is no low-angle grain boundary in the crystal grown at lower rotation rate.
7Â¥2010-04-15 15:56:48
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lidanye

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2Â¥2010-04-14 15:50:55
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wangjianna

½ð³æ (ÕýʽдÊÖ)

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sirljz(½ð±Ò+2):лл½»Á÷ 2010-04-14 19:46
During the ZTO grow procedure, feeding rod was melted, the gas from hole of low-density rod dissolved in the melt to form gas bubble. When a high rotation rate was applied, the gas bubbles were forced to the center axis due to the centrifugal force effect and coalesced to grow. With the crystal growing, there formed the bubble inclusions. While a lower rotation rate was applied, gas bubbles moved to the upper part and went out of the melt due to the diffusion. So a lower rotation is effective to suppress the formation of bubble inclusion. It can also be found that there is no low-angle grain boundary in the crystal grown at lower rotation rate.
Reaction Calorimetric/ Process safety/Hazard evaluation
3Â¥2010-04-14 16:06:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wangjianna

½ð³æ (ÕýʽдÊÖ)

±¾À´ÎÒ¶¼±íÉϺìÉ«ÁË ¿ÉÒ»Õ³ÉÏÀ´ ¾ÍûÓÐÁË
Reaction Calorimetric/ Process safety/Hazard evaluation
4Â¥2010-04-14 16:07:45
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