首页|龙泉青瓷釉的组成、熔体结构和高温黏度的关系

龙泉青瓷釉的组成、熔体结构和高温黏度的关系

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以龙泉窑梅子青釉化学组成为基础,分别用2%各种氧化物代替2%SiO2,配制七种釉料.通过釉料熔融实验分别确定釉熔体的始熔温度、全熔温度和流动温度;通过施釉制品烧成试验,观察各烧成制品的釉面外观质量、釉层气泡和晶体的变化情况,制品底部釉层积釉程度及蚯蚓纹分布情况,并结合熔体分子结构理论,揭示了SiO2、Al2O3、K2O、Na2O、CaO、MgO和Fe2O3等七种氧化物对釉熔体高温黏度的影响.增加SiO2或Al2O3含量,会增加熔体的高温黏度,其中,Al2O3的影响程度更大;而增加K2O、Na2O、CaO、MgO、Fe2O3中任一氧化物的含量,均会使得釉熔体的高温黏度降低,其中:CaO的影响程度最大;MgO的影响程度最小.K2O使得釉的熔融范围扩大;CaO使得釉的熔融范围缩小.
The Relationship Between the Composition,Melt Structure and High Temperature Viscosity of Longquan Celadon Glaze
Based on the chemical composition of plum green glaze in Longquan kiln,2%of various oxides were used instead of 2%SiO2 in preparing seven kinds of glazes.The initial melting temperature,full melting temperature and flow temperature of the glaze melt were determined by glaze melting experiments.The glaze appearance quality,glaze bubbles and crystal changes,glaze layer glaze degree and earthworm pattern distribution at the bottom of the product were observed through the firing experiments of the glazed products.Combined with the theory of molten molecular structure of the melt,the effect of seven oxides,namely SiO2,Al2O3,K2O,Na2O,CaO,of MgO and Fe2O3 on the high temperature viscosity of the glaze melt was revealed.Increase of the SiO2 or Al2O3 content will increase the high temperature viscosity of the melt,of which the influence of Al2O3 is greater.In-crease of the content of any of the monoxides in K2O,Na2O,CaO,MgO,Fe2O3 reduces the high temperature viscosity of the glaze melt,of which CaO has the greatest degree of influence,and MgO has the least effect,and K2O makes the melting range of the glaze expand while CaO makes the melting range of the glaze narrow.

Longquan celadon porcelainplum glazeoxideglaze melthigh temperature viscosity

刘干平、李刘旒

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龙泉市鼎青青瓷坊,浙江龙泉 323700

龙泉青瓷 梅子青釉 氧化物 釉熔体 高温黏度

2024

中国陶瓷工业
中国陶瓷工业协会 景德镇陶瓷学院

中国陶瓷工业

影响因子:0.201
ISSN:1006-2874
年,卷(期):2024.31(1)
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