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石英坩堝
石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)是一(yi)(yi)種只含二氧化硅單(dan)一(yi)(yi)成(cheng)份(fen)的玻(bo)(bo)璃(li)。由于種類、工藝、原料(liao)的不同,國外(wai)常(chang)常(chang)叫做硅酸玻(bo)(bo)璃(li)、石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、熔融(rong)石(shi)英(ying)(ying)(ying)(ying)、熔凝石(shi)英(ying)(ying)(ying)(ying)、合成(cheng)熔融(rong)石(shi)英(ying)(ying)(ying)(ying),以及(ji)沒有(you)明(ming)確概(gai)念(nian)的透(tou)明(ming)、半(ban)透(tou)明(ming)、不透(tou)明(ming)石(shi)英(ying)(ying)(ying)(ying)等。我國統稱石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li),多(duo)按工藝方法、用(yong)(yong)途及(ji)外(wai)觀來(lai)分類,如電熔透(tou)明(ming)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、連熔石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、氣煉(lian)透(tou)明(ming)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、合成(cheng)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、不透(tou)明(ming)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、光(guang)學石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、半(ban)導體(ti)用(yong)(yong)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)、電光(guang)源用(yong)(yong)石(shi)英(ying)(ying)(ying)(ying)玻(bo)(bo)璃(li)等。人們習慣于用(yong)(yong)“石(shi)英(ying)(ying)(ying)(ying)”這(zhe)樣一(yi)(yi)個簡
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石英坩堝
石(shi)(shi)英玻(bo)璃是以含(han)二氧(yang)化(hua)(hua)硅物質,如水晶、硅石(shi)(shi)。四氧(yang)化(hua)(hua)硅為原料高溫(wen)熔(rong)制而成。其二氧(yang)化(hua)(hua)硅含(han)量(liang)比普通玻(bo)璃高得多,一般(ban)石(shi)(shi)英玻(bo)璃二氧(yang)化(hua)(hua)硅含(han)量(liang)在99.999%。石(shi)(shi)英玻(bo)璃具(ju)有優(you)異(yi)的光(guang)學性(xing)能,不僅(jin)可見(jian)光(guang)透光(guang)度特別(bie)好,而且透紫(zi)外(wai)線(xian),紅外(wai)線(xian)。
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