本文選題：無鉛 + 透明��； 參考：《大連工業(yè)大學(xué)》2015年碩士論文

【摘要】：本課題研究了兩種熔塊產(chǎn)品——無鉛透明熔塊釉與白榴石熔塊。研制出了符合一定要求的產(chǎn)品,并達(dá)到了降低成本,優(yōu)化性能的目的。無鉛透明熔塊釉是以解決鉛透明熔塊釉所產(chǎn)生的鉛污染為目的,而誕生的一種釉料產(chǎn)品。無鉛透明熔塊釉是一種采用Bi2O3、Y2O3、B2O3、MgO、ZnO、BaO、SrO、Li2O等氧化物替代PbO的陶瓷釉料。其不僅解決了鉛釉產(chǎn)品在使用過程中鉛溶出所帶來的安全隱患問題,且具備與鉛透明熔塊釉相近的優(yōu)良性能。本課題通過采用B2O3、MgO、ZnO、BaO、SrO等氧化物替代PbO,研究了體膨脹系數(shù)為180~200×10-7/℃,釉燒溫度為1100~1200℃的無鉛透明熔塊釉。并研究了硅鋁質(zhì)量比、硅鈉質(zhì)量比、硅硼質(zhì)量比對樣品的釉燒狀態(tài)、膨脹系數(shù)、透光性能的影響。結(jié)果表明:當(dāng)硅鋁比為9~11,硅鈉比為8.9~10.3,硅硼比為6.2~7時(shí),樣品可以表現(xiàn)出比較優(yōu)良的釉燒性能。并且,樣品的體膨脹系數(shù)完全符合所要求的180~200×10-7/℃的標(biāo)準(zhǔn)。當(dāng)硅鋁比為10,硅鈉比為9.6,硅硼比為6.6時(shí),熔塊樣品的透光度最好,可以達(dá)到95%左右。白榴石被廣泛用作牙科玻璃陶瓷材料的內(nèi)部增強(qiáng)體,主要利用其高熱膨脹系數(shù)的性能來提高牙科玻璃陶瓷材料的抗折強(qiáng)度、斷裂韌性以及熱膨脹系數(shù)。本課題采用熔融晶化法,以鉀長石為主要原料制備了白榴石熔塊。通過X射線衍射分析、熱膨脹系數(shù)分析、掃描電鏡等表征手段探討了二氧化硅、氧化鋁、氧化鉀等不同成分以及不同的溫度制度對制備白榴石的影響。通過抗折強(qiáng)度分析、熱膨脹系數(shù)分析、斷裂韌性分析等手段研究了白榴石摻雜量對牙科玻璃陶瓷性能的影響。結(jié)果表明:當(dāng)配方中各成分的含量接近白榴石的理論含量時(shí),可以制備出性能較好的樣品。當(dāng)氧化鋁的含量微過量,熔融溫度為1500℃,晶化溫度為1200℃,保溫時(shí)間為4 h時(shí),所制備的樣品性能最好。白榴石晶粒尺寸平均為3 um×5 um×10 um,并呈現(xiàn)規(guī)則排列,熱膨脹系數(shù)為21.31×10-6/℃。并且,摻雜白榴石可以有效的提高牙科玻璃陶瓷材料的抗折強(qiáng)度、斷裂韌性和熱膨脹系數(shù)。當(dāng)白榴石的摻雜量為50%時(shí),牙科玻璃陶瓷材料的性能最好,抗折強(qiáng)度為129.58 MPa,斷裂韌性為16.29 MPa/m2,熱膨脹系數(shù)為15×10-6/℃左右。
[Abstract]:In this paper, two kinds of fusing products-lead-free transparent fusing glaze and white garnet fusing were studied. The products which meet certain requirements have been developed, and the purpose of reducing cost and optimizing performance has been achieved. Lead-free transparent fusing glaze is a kind of glaze product, which aims to solve the lead pollution caused by lead transparent fusing glaze. Lead-free transparent fusing glaze is a kind of ceramic glaze which is replaced by oxides such as Bi _ 2O _ 3O _ 3Y _ 2O _ 3H _ 2O _ 3B _ 2O _ 3 MgO _ (2) O _ (2) O _ (1) O _ (3) O _ (1) O _ (2) O _ It not only solves the hidden safety problem caused by lead dissolution in the process of using lead glaze, but also has good properties similar to that of lead transparent fusing glaze. By replacing PBO with B _ 2O _ 3 MgO _ 3 MgO _ 2O _ (ZnO) and BaOO _ (SrO) oxides, a lead-free transparent fusing glaze with a body expansion coefficient of 180 ~ 200 脳 10 ~ (-7) / 鈩，

本文編號：1865743