高硬度全抛釉的研制

发布时间：2018-02-13 04:23

  本文关键词： 全抛釉 高硬度 高耐磨性 釉面性能　出处：《景德镇陶瓷学院》2015年硕士论文　论文类型：学位论文

【摘要】：本文针对全抛釉目前出现的表面针孔和不耐磨的现象,探究全抛釉中各氧化物的含量变化对全抛釉釉面质量影响,得出合适的全抛釉配方。首先,本实验中探索性阶段使用的坯体和底釉是某工厂使用的坯体和底釉,然后再经过大量相关文献和探索性实验确定基础釉配方F,比较基础配方F在抛光前后釉面质量变化,得出抛光工艺对全抛釉釉面质量的影响。然后在配方F的基础上采用正交实验法得到优化配方G,在优化配方G的基础上讨论硅铝摩尔比,主要熔剂CaO、K2O、Na2O、 ZnO的含量对全抛釉釉面性能的影响,采用光泽度仪,显微维氏硬度仪和有釉耐磨试验机测试釉面光泽度、硬度及耐磨性能,并用线性膨胀仪和SEM等测试手段对样品进行表征。实验得到的优化配方是：SiO2为54.6%,Al2O3为21.9%,Fe2O3为0.2%,CaO为8.6%,MgO为3.0%,K2O为6.8%,Na2O为2.3%,ZnO为4.6%。其釉面质量为：釉面光滑、平整,无水波纹,针孔较少,光泽度为102.5,显微维氏硬度为615.3HV0.5,耐磨级别为2100r,4级,始熔点为1025.1℃。实验得出的结论为：抛光后,全抛釉釉面平整度和光泽度有了大幅提高,但是釉面耐磨性能有所下降。硅铝比在4.2时,釉面光泽度高,釉面硬度和耐磨性等性能良好,硅铝比在4.2以下时,釉面光泽度开始下降,针孔较多。因此要做出光泽度高、耐磨性和硬度较好的全抛釉,硅铝比要有一个合适的范围；CaO、K2O、Na2O、 ZnO等能在一定范围内提高釉面光泽度,其中CaO对釉面硬度的提高有一定的作用；K20+Na20含量增加会降低釉面硬度；碱金属和碱土金属均能改善全抛釉的性能,但是碱金属比碱土金属助熔效果更佳,其中全抛釉的始熔点跟针孔的出现有较大的关系,其应高于坯体和底釉的氧化分解温度。本实验的研究阐述了全抛釉中各种氧化物对全抛釉釉面质量的影响,在一定程度上对实际生产有指导意义。
[Abstract]:In this paper, aiming at the phenomenon of surface pinhole and non-wear resistance, the effect of the content of oxide on the quality of the whole cast glaze is studied, and the suitable formula of the whole cast glaze is obtained. The billet and bottom glaze used in the exploratory stage in this experiment are the billet and bottom glaze used in a factory, and then the base glaze formula F is determined by a large number of related documents and exploratory experiments, and the quality changes of the base formula F before and after polishing are compared. The effect of polishing process on the quality of glaze surface is obtained. Then the optimized formula G is obtained by orthogonal experiment on the basis of formula F, and the molar ratio of silicon to aluminum is discussed on the basis of optimizing formula G. The effect of the content of the main fluxes CaOOK2ONa-Na2Oand ZnO on the glaze properties was studied. The glaze gloss, hardness and wear resistance were tested by gloss tester, micro-Vickers hardness tester and glaze wear tester. The optimized formula was obtained by means of linear dilatometer and SEM. The optimized formula was that: Sio _ 2 = 54.6and Al _ 2O _ 3 = 21.9 and Fe _ 2O _ 2O _ 3 = 0.2A / O = 8.6mg O = 8.6mg O = 3.0K _ 2O = 6.8K _ 2O / Na _ 2O = 2.3ZO = 4.6.The glaze quality was smooth, smooth, without water ripple, and had fewer pinholes. The gloss is 102.5, the microhardness is 615.3HV0.5, the wear resistance grade is 2100rc4, the initial melting point is 1025.1 鈩，

本文编号：1507311