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硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (6): 2297-2305.DOI: 10.16552/j.cnki.issn1001-1625.2024.1417

• 陶瓷 • 上一篇    下一篇

钙钾摩尔比对汝窑青釉呈色与烧成温度范围的影响

丁二宝1, 孙稳1, 刘楠楠1, 杨兴化1, 张颖2, 李鑫浩3   

  1. 1.平顶山学院河南省中原古陶瓷研究重点实验室,平顶山 467000;
    2.景德镇陶瓷大学美术学院,景德镇 333000;
    3.江西陶瓷工艺美术职业技术学院材料与机械工程学院,景德镇 333000
  • 收稿日期:2024-11-19 修订日期:2024-12-31 发布日期:2025-06-27
  • 通信作者: 杨兴化,博士,讲师。E-mail:3167@pdsu.edu.cn
  • 作者简介:丁二宝(1989—),男,博士,讲师。主要从事传统陶瓷与古陶瓷结构与性能的研究。E-mail:6403@pdsu.edu.cn
  • 基金资助:
    河南省科技攻关项目(232102230123);平顶山学院高层次人才启动基金(PXY-BSQD-202111);平顶山市陶瓷产业创新发展规划项目(PXY-HX-202027);河南省社科联项目(SKL-2023-2829);河南省软科学重点项目(242400411020)

Influence of Calcium/Potassium Molar Ratio on Color and Firing Temperature Range of Ru Porcelain Celadon Glaze

DING Erbao1, SUN Wen1, LIU Nannan1, YANG Xinghua1, ZHANG Ying2, LI Xinhao3   

  1. 1. Henan Key Laboratory of Research for Central Plains Ancient Ceramics, Pingdingshan University, Pingdingshan 467000, China;
    2. College of Art, Jingdezhen Ceramic Institute, Jingdezhen 333000, China;
    3. College of Materials and Mechanical Engineering, Jiangxi Vocational College of Ceramic Arts and Technology, Jingdezhen 333000, China
  • Received:2024-11-19 Revised:2024-12-31 Online:2025-06-27

摘要: 以清凉寺遗址出土的汝窑青釉的化学组成为基础制备样品,采用高温显微镜、扫描电子显微镜与色度仪等,探究了釉中钙钾摩尔比对釉烧成温度范围、显微结构与呈色的影响规律。结果表明:随钙钾摩尔比的逐渐减小(8.70~3.45),釉的色度值a*与光泽度先减小后增大,色度值b*与其相反;钙钾摩尔比为5.08时,釉面特征出现突变,呈现半哑光状态,呈色与遗址出土的样品接近;显微结构中主要是钙长石形貌与分相结构的变化,钙钾摩尔比在8.70~6.47时,钙长石形态为柱状、针状及片状,分相结构由孤立液滴状逐渐向棉絮状转变,平均尺寸变小;钙钾摩尔比在5.08~3.45时,熔体的表面张力开始出现较大起伏,钙长石开始出现枝晶形态,并出现次级分枝,样品的“明净感”降低。烧成温度低于1 170 ℃时,钙钾摩尔比为8.70的样品由于较低的软化温度而熔融效果较好,其余样品由于较高的软化温度而熔融效果较差;烧成温度在1 170~1 220 ℃时,钙钾摩尔比为5.08的样品具有相对较宽的烧成范围,液相量也相对较多且变化平缓,呈色较为稳定且釉面熔融效果较好,可改善汝窑青釉中因烧成范围窄而出现的呈色波动问题。

关键词: 汝窑青釉, 钙钾摩尔比, 呈色特征, 烧成温度, 显微结构

Abstract: Samples were prepared based on the chemical composition of Ru porcelain celadon glaze unearthed from Qingliangsi site. High-temperature microscopy, scanning electron microscopy, and colorimeter were employed to study the influence of calcium/potassium molar ratio in the glazes on firing temperature range, microstructure and coloration. The results show that chromatic a* value and gloss of the glazes first decrease and then increase, while b* value does the opposite with calcium/potassium molar ratio decreased gradually from 8.70 to 3.45. When calcium/potassium molar ratio is 5.08, the glaze characteristic shows a sudden change, showing a semi-matte surface, and the color is similar to that of unearthed samples. The microstructures are mainly the changes of morphology of anorthite and phase separation. When calcium/potassium molar ratio is in the range of 8.70~6.47, the morphology of anorthite is columnar, acicular and lamellar, and the phase separation structure gradually changes from isolated droplet to cotton wool, and the average size decreases. When calcium/potassium molar ratio is in the range of 5.08~3.45, the surface tension of the glaze melt begins to fluctuate greatly, the form of dendrite begins to appear, and the secondary branches appear, which decreases the “clarity” of the glaze. When the firing temperature is below 1 170 ℃, glaze with calcium/potassium molar ratio of 8.70 exhibits good melting effect due to its lower softening temperature, while the other samples show poor melting effect due to their higher softening temperature. When the firing temperature is between 1 170 ℃ and 1 220 ℃, glaze with calcium/potassium molar ratio of 5.08 has a relatively wide firing range, with a relatively large amount of liquid phase and changing smoothly. The color is relatively stable and glaze has a good melting effect, which can improve the color fluctuation issue in Ru porcelain celadon glaze caused by the narrow firing range.

Key words: Ru porcelain celadon glaze, calcium/potassium molar ratio, color character, firing temperature, microstructure

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