Fe-Cr-Ni-Mn系黑色陶瓷颜料的制备及呈色性能分析

以Fe₂O₃、Cr₂O₃、MnO和NiO为原料,采用固相合成法制备Fe-Cr-Ni-Mn系黑色陶瓷颜料,并使用X射线衍射仪、色度仪、扫描电子显微镜、紫外-可见分光光度计等分析手段对所制备颜料进行了表征,研究了原料配比、烧结温度、保温时间和冷却方式等对颜料呈色性能的影响。结果表明:当原料中Fe₂O₃、Cr₂O₃、MnO和NiO的摩尔比为6:1:1:1,烧结温度为1 150 ℃,保温时间为45 min,采用随炉冷却时,颜料颗粒细小,粒度分布均匀,其L^*、a^*与b^*值分别为18.02、0.20和0,禁带宽度为1.25 eV,呈纯正黑色,且物相主要由NiFe₂O₄、NiCr₂O₄和NiMn_0.5Cr_1.5]O₄组成;将所制备颜料应用于黑色陶瓷釉,釉面呈纯正黑色,且光滑致密,表明所制备颜料具备优异的着色性能和应用潜力。

Preparation and Coloring Performance Analysis of Fe-Cr-Ni-Mn System Black Ceramic Pigment

Fe₂O₃, Cr₂O₃, MnO and NiO were used as raw materials to prepare Fe-Cr-Ni-Mn black ceramic pigments by solid-phase synthesis method. The prepared pigments were analyzed by using X-ray diffractometer (XRD), colorimeter, scanning electron microscope (SEM), ultraviolet-visible (UV-Vis) spectrophotometer and other analytical methods to study the effects of raw material ratio, sintering temperature, holding time and cooling method on the coloring performance of pigments. The results show that when the molar ratio of Fe₂O₃, Cr₂O₃, MnO and NiO is 6:1:1:1, the sintering temperature is 1 150 ℃, the holding time is 45 min, and the cooling method is furnace cooling, the particle size of the prepared pigment is fine and uniform distribution, and the L^*, a^* and b^* values are 18.02, 0.20 and 0, respectively. The forbidden band width of the prepared pigment is 1.25 eV, and the color is pure black. In addition, the phases of pigment are mainly composed of NiFe₂O₄, NiCr₂O₄ and NiMn_0.5Cr_1.5]O₄. When the prepared pigment is applied to the black ceramic glaze, the glaze surface is pure black, smooth and compact, indicating that the pigment has excellent coloring properties and application potential.