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二氧化锆的熔点比锆高,达2700℃--CS CERAMIC
Post Time : 2013-11-14 14:49:57    Hits : 723      Article Source : CS Ceramic   
 

二氧化锆的熔点比锆高,达2700℃--CS CERAMIC

 

二氧化锆的熔点比锆高,达2700℃,是自然界中耐火性能最好的材料之一。它的导热性能差,但导电能力很强,沆蚀能力也很强,即使加热到1900多摄氏度也不会跟熔融的铝、铁、镍、铂等金属、硅酸盐和酸性炉渣发生作用。因而可以用它来制造熔炼贵金属的坩埚、耐火管、耐热玻璃和耐热搪瓷等。在搪瓷和玻璃中加入二氧化锆可以使它们增强抵抗酸、碱腐蚀的能力。用二氧化锆衬砌的高温炉,受热后体积不会增大很多,温度变化对它影响很小,炉体不致因热胀冷缩而产生裂缝,可以大大延长炉子的寿命。用二氧化锆作耐火材料,加进5%的氧化钙作稳定剂,它的耐热温度比氧化铝高500度,绝热能力比添加以前提高三倍。把白色的二氧化锆掺进陶瓷,能使陶瓷更洁白光亮、更耐热,强度也有所增加,用这种陶瓷制造高温绝缘瓷瓶,绝缘能力很强,膨胀系数很小

For more info :please contact :sale@csceramic.com

 

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