CN110922199A - 一种黑色氧化锆陶瓷烧成用承烧板及其制备方法 - Google Patents
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Abstract
本发明公开了一种黑色氧化锆陶瓷烧成用承烧板,包括主料和粘接剂,所述主料由以下质量百分比的原料组成:80目电熔刚玉砂55%‑70%,320目氧化钇稳定氧化锆20%‑30%,氧化铝微粉10%‑20%,所述粘结剂的添加量占主料总质量的6%‑10%。其的制备方法,包括:(1)将按比例称取的原料,并加入高速混炼机中充分造粒;(2)将制备的混合料困料12小时后,倒入模具,用液压机以80~120Mpa的压力压制成湿坯;(3)湿坯自然干燥6~12小时后,转入烘箱100~150℃干燥6~12小时,使其中的水分充分挥发,然后放入电炉中在1650~1700℃温度下保温3~6小时,自然冷却后得到承烧板。该承烧板具有抗热震性好、高温强度高、化学性质稳定等特点。
Description
技术领域
本发明涉及于耐火陶瓷材料技术领域,特别涉及一种黑色氧化锆陶瓷烧成用承烧板及其制备方法。
背景技术
二氧化锆由于具有优良的力学、热学和电学性能,在结构材料、光学元件和燃料电池等方面有着广泛的应用。近年来,随着人们对装饰品需求的高速发展,黑色氧化锆陶瓷以其优异的机械性能、高贵的颜色、金属的光泽和无过敏作用等特点,成为高档装饰的新宠材料,在高档手表、首饰、手机外壳等有着广阔的市场前景。目前生产黑色氧化锆的主流技术是在氧化锆中掺杂铁、钴、镍、锰等色料氧化物,通过添加色料提高对光的吸收,从而提高氧化锆材料的黑度。由于氧化锰、氧化铁在高温下容易与莫来石发生化学反应,所以当使用刚玉-莫来石承烧板烧结黑色氧化锆时,黑色氧化锆陶瓷表面经常出现异色斑点。99氧化铝承烧板虽然不存在与黑色氧化锆反应的问题,但该承烧板抗热震性差,使用时容易开裂。
发明内容
本发明的目的在于克服现有技术的不足,提供一种黑色氧化锆陶瓷烧成用承烧板及其制备方法,该承烧板与刚玉-莫来石/99氧化铝承烧板相比具有抗热震性好、高温强度高、化学性质稳定等特点。
本发明提供的一种黑色氧化锆陶瓷烧成用承烧板,包括主料和粘接剂,所述主料由以下质量百分比的原料组成:80目电熔刚玉砂55%-70%,320目氧化钇稳定氧化锆20%-30%,氧化铝微粉10%-20%,所述粘结剂的添加量占主料总质量的6%-10%。
优选地,所述粘结剂是水溶性树脂、PVA、甲基纤维素的水溶液中的一种。
优选地,所述水溶性树脂溶液的溶度为10%-20%,PVA溶液的溶度为5%-10%,甲基纤维素水溶液的浓度为3%-5%。
以上所述的一种黑色氧化锆陶瓷烧成用承烧板的制备方法,包括如下步骤:
(1)混料:将按比例称取的原料,并加入高速混炼机中充分造粒;
(2)湿坯的压制:将制备的混合料困料12小时后,倒入模具,用液压机以80~120Mpa的压力压制成湿坯;
(3)干燥与烧结:湿坯自然干燥6~12小时后,转入烘箱100~150℃干燥6~12小时,使其中的水分充分挥发,然后放入电炉中在1650~1700℃温度下保温3~6小时,自然冷却后得到承烧板。
本发明提供的一种黑色氧化锆陶瓷烧成用承烧板,由高纯刚玉、氧化钇稳定氧化锆、氧化铝微粉组成,三者都具有极高的化学惰性,避免了与黑色氧化锆陶瓷中的致黑元素Co-Fe-Mn的反应。承烧板运用了“复相改性”原理,添加氧化钇稳定氧化锆,与刚玉构成复相材料,由于二者热膨胀系数的差异,导致在相的界面上产生微裂纹,使其具备微裂纹增韧性能,从而提高了承烧板的热震稳定性。
附图说明
图1是刚玉莫来石承烧板烧制黑色氧化锆照片图。
图2是本发明承烧板烧制黑色氧化锆照片图。
具体实施方式
为了便于理解本发明,下文将结合较佳的实施例对本发明作更全面、细致地描述,但本发明的保护范围并不限于以下具体的实施例。
实施例1:
(1)混料:将质量比为55%的80目电熔刚玉砂,质量比为30%的320目氧化钇稳定氧化锆,质量比为15%的氧化铝微粉,外加80目电熔刚玉砂、320目氧化钇稳定氧化锆和氧化铝微粉总质量的6%浓度为3%的甲基纤维素水溶液粘结剂,在高速混炼机中充分造粒;
(2)湿坯的压制:将制备的混合料困料12小时后,倒入模具,用液压机以80Mpa的压力压制成湿坯;
(3)干燥与烧结:湿坯自然干燥6小时后,转入烘箱150℃干燥6小时,使其中的水分充分挥发,然后放入电炉中在1700℃温度下保温3小时,自然冷却后得到承烧板。
实施例2:
(1)混料:将质量比为65%的80目电熔刚玉砂,质量比为25%的320目氧化钇稳定氧化锆,质量比为10%的氧化铝微粉,外加80目电熔刚玉砂、320目氧化钇稳定氧化锆和氧化铝微粉总质量的8%浓度为8%的PVA水溶液,在高速混炼机中充分造粒;
(2)湿坯的压制:将制备的混合料困料12小时后,倒入模具,用液压机以100Mpa的压力压制成湿坯;
(3)干燥与烧结:湿坯自然干燥6小时后,转入烘箱120℃干燥8小时,使其中的水分充分挥发,然后放入电炉中在1680℃温度下保温4小时,自然冷却后得到承烧板。
实施例3:
(1)混料:将质量比为60%的80目电熔刚玉砂,质量比为20%的320目氧化钇稳定氧化锆,质量比为20%的氧化铝微粉,外加80目电熔刚玉砂、320目氧化钇稳定氧化锆和氧化铝微粉总质量的10%浓度为15%的水溶性树脂水溶液,在高速混炼机中充分造粒;
(2)湿坯的压制:将制备的混合料困料12小时后,倒入模具,用液压机以120Mpa的压力压制成湿坯;
(3)干燥与烧结:湿坯自然干燥6小时后,转入烘箱100℃干燥12小时,使其中的水分充分挥发,然后放入电炉中在1650℃温度下保温6小时,自然冷却后得到承烧板。
如图1所示,刚玉莫来石承烧板烧制黑色氧化锆,出现异色,影响美观。
如图2所示,本发明承烧板烧制黑色氧化锆,表面完好。
本发明实施例1-3,分别与刚玉-莫来石承烧板和99氧化铝承烧板烧结黑色氧化锆时,产品性能指标对比如下:
在前述说明书与相关附图中存在的教导的帮助下,本发明所属领域的技术人员将会想到本发明的许多修改和其它实施方案。因此,要理解的是,本发明不限于公开的具体实施方案,修改和其它实施方案被认为包括在所附权利要求的范围内。尽管本文中使用了特定术语,它们仅以一般和描述性意义使用,而不用于限制。
Claims (4)
1.一种黑色氧化锆陶瓷烧成用承烧板,其特征在于,包括主料和粘接剂,所述主料由以下质量百分比的原料组成:80目电熔刚玉砂55%-70%,320目氧化钇稳定氧化锆20%-30%,氧化铝微粉10%-20%,所述粘结剂的添加量占主料总质量的6%-10%。
2.如权利要求1所述的一种黑色氧化锆陶瓷烧成用承烧板,其特征在于:所述粘结剂是水溶性树脂、PVA、甲基纤维素的水溶液中的一种。
3.如权利要求2所述的一种黑色氧化锆陶瓷烧成用承烧板,其特征在于:所述水溶性树脂溶液的溶度为10%-20%,PVA溶液的溶度为5%-10%,甲基纤维素水溶液的浓度为3%-5%。
4.权利要求1、2或3所述的一种黑色氧化锆陶瓷烧成用承烧板的制备方法,其特征在于,包括如下步骤:
(1)混料:将按比例称取的原料,并加入高速混炼机中充分造粒;
(2)湿坯的压制:将制备的混合料困料12小时后,倒入模具,用液压机以80~120Mpa的压力压制成湿坯;
(3)干燥与烧结:湿坯自然干燥6~12小时后,转入烘箱100~150℃干燥6~12小时,使其中的水分充分挥发,然后放入电炉中在1650~1700℃温度下保温3~6小时,自然冷却后得到承烧板。
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