【摘要】：由第四周期過渡金屬元素氧化物復(fù)合而成的黑色陶瓷色料,其著色力不僅與各金屬離子含量有關(guān),還與色料的顆粒粒徑及粒徑分布密切相關(guān),制備粒徑小且顆粒粒度分布窄的高著色力黑色色料一直是技術(shù)難點。本論文主要以硝酸鐵、硝酸鈷、硝酸錳、硝酸銅及DL-丙氨酸為原料,采用溶液燃燒法制備Co-Cu-Mn-Fe系納米晶黑色色料,并考察其物化性能。首先,本論文通過優(yōu)化試驗獲取了Co-Cu-Mn-Fe系黑色色料,同時,考察了點火溫度、燃料加入量的影響。結(jié)果表明:當(dāng)燃料與氧化劑為化學(xué)計量比(推進劑化學(xué)理論計算)、點火溫度為400℃和Co2+:Cu2+:Mn2+:Fe3+為0.5:0.5:1:1時,得到平均晶粒粒徑和平均顆粒粒徑分別為16.4 nm、1μm的納米晶黑色色料,其L*、a*、b*值分別為39.95、0.25、0.16。升高點火溫度有利于色料合成,但不利于得到分散性好的色料顆粒。燃料在化學(xué)計量比體系下得到產(chǎn)物的分散性較貧燃體系和富燃體系條件下得到產(chǎn)物的分散性好,且顆粒粒徑較小。其次,本論文系統(tǒng)地研究了惰性鹽種類、惰性鹽加入量及硝酸銨對溶液燃燒反應(yīng)過程及燃燒產(chǎn)物性能的影響。結(jié)果表明:在未加鹽、氯化鋰、氯化鈉、氯化鉀體系下得到產(chǎn)物的顆粒粒徑分別為1μm、650 nm、400 nm和300 nm,相應(yīng)的比表面積分別為19.75 m2/g、32.46 m2/g、142.50 m2/g和131.66 m2/g。產(chǎn)物的顆粒粒徑和比表面積相差較大的原因是與惰性鹽溶解度有關(guān),惰性鹽的溶解度大,得到產(chǎn)物的顆粒粒徑大、比表面積小;反之亦然。加入適量的惰性鹽可獲得小晶粒粒徑和小顆粒粒徑的目標產(chǎn)物,加入過量的惰性鹽不利于反應(yīng)進行,不能得到目標產(chǎn)物。加入硝酸銨不僅使溶液燃燒產(chǎn)物的晶粒粒徑變大,還使產(chǎn)物的顆粒團聚嚴重、顆粒粒徑變大。再次,本論文還考察了Co-Cu-Mn-Fe系納米晶黑色色料應(yīng)用在鋅釉、鎂釉、含鋇透明釉、含鋇亞光釉及高硼釉中的呈色性能。結(jié)果表明:色料在鋅釉和鎂釉中呈色不穩(wěn)定,在鋇釉和硼釉中顯黑色且呈色好,且在高硼釉中著色性能最好,這說明色料宜用于鋇釉和硼釉中,不宜應(yīng)用于鋅釉和鎂釉中。最后,本論文給出了根據(jù)上述試驗結(jié)果所獲得的結(jié)論以及今后工作的展望。
[Abstract]:The coloring power of black ceramic pigments composed of transition metal element oxides in the fourth cycle is related not only to the content of metal ions, but also to the particle size and particle size distribution of the pigments. It has been a technical difficulty to prepare black pigments with small particle size and narrow particle size distribution. In this paper, Co-Cu-Mn-Fe nanocrystalline black color was prepared by solution combustion method with Fe, Co nitrate, mn nitrate, Cu nitrate and DL- alanine as raw materials, and their physicochemical properties were investigated. Firstly, the black color of Co-Cu-Mn-Fe system was obtained by optimization test, and the effects of ignition temperature and fuel addition were investigated. The results show that when the stoichiometric ratio of fuel to oxidant (theoretical calculation of propellant chemistry), ignition temperature is 400 鈩，

本文編號：2228153