本文關(guān)鍵詞： 全拋釉 高硬度 高耐磨性 釉面性能　出處：《景德鎮(zhèn)陶瓷學院》2015年碩士論文　論文類型：學位論文

【摘要】：本文針對全拋釉目前出現(xiàn)的表面針孔和不耐磨的現(xiàn)象,探究全拋釉中各氧化物的含量變化對全拋釉釉面質(zhì)量影響,得出合適的全拋釉配方。首先,本實驗中探索性階段使用的坯體和底釉是某工廠使用的坯體和底釉,然后再經(jīng)過大量相關(guān)文獻和探索性實驗確定基礎(chǔ)釉配方F,比較基礎(chǔ)配方F在拋光前后釉面質(zhì)量變化,得出拋光工藝對全拋釉釉面質(zhì)量的影響。然后在配方F的基礎(chǔ)上采用正交實驗法得到優(yōu)化配方G,在優(yōu)化配方G的基礎(chǔ)上討論硅鋁摩爾比,主要熔劑CaO、K2O、Na2O、 ZnO的含量對全拋釉釉面性能的影響,采用光澤度儀,顯微維氏硬度儀和有釉耐磨試驗機測試釉面光澤度、硬度及耐磨性能,并用線性膨脹儀和SEM等測試手段對樣品進行表征。實驗得到的優(yōu)化配方是：SiO2為54.6%,Al2O3為21.9%,Fe2O3為0.2%,CaO為8.6%,MgO為3.0%,K2O為6.8%,Na2O為2.3%,ZnO為4.6%。其釉面質(zhì)量為：釉面光滑、平整,無水波紋,針孔較少,光澤度為102.5,顯微維氏硬度為615.3HV0.5,耐磨級別為2100r,4級,始熔點為1025.1℃。實驗得出的結(jié)論為：拋光后,全拋釉釉面平整度和光澤度有了大幅提高,但是釉面耐磨性能有所下降。硅鋁比在4.2時,釉面光澤度高,釉面硬度和耐磨性等性能良好,硅鋁比在4.2以下時,釉面光澤度開始下降,針孔較多。因此要做出光澤度高、耐磨性和硬度較好的全拋釉,硅鋁比要有一個合適的范圍；CaO、K2O、Na2O、 ZnO等能在一定范圍內(nèi)提高釉面光澤度,其中CaO對釉面硬度的提高有一定的作用；K20+Na20含量增加會降低釉面硬度；堿金屬和堿土金屬均能改善全拋釉的性能,但是堿金屬比堿土金屬助熔效果更佳,其中全拋釉的始熔點跟針孔的出現(xiàn)有較大的關(guān)系,其應(yīng)高于坯體和底釉的氧化分解溫度。本實驗的研究闡述了全拋釉中各種氧化物對全拋釉釉面質(zhì)量的影響,在一定程度上對實際生產(chǎn)有指導意義。
[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，

本文編號：1507311