高能球磨高温固相法制备尖晶石型铜铬黑颜料

以Cr2O3与CuO为原料，采用高能球磨高温固相法制备尖晶石型铜铬黑颜料；利用XRD、SEM和激光粒度仪等方法对制备颜料的结构、形貌及粒度进行了表征。系统研究了前体混料方式、球磨时间、煅烧温度、煅烧时间等条件对铜铬黑颜料晶型、粒度的影响；探讨了掺杂对铜铬黑颜料着色力的影响。研究表明，通过高能球磨可有效地控制颗粒大小及均匀性，NiO与CoO的掺入可显著提高其着色力。高能球磨10 min，煅烧温度900 ℃，保温时间3 h下制备出了粒径分布均匀着色力较好的铜铬黑颜料。

Synthesis of copper chromite black pigment with spinel structure by high temperature solid phase method with high-energy ball-milling

The copper chromite black pigment (CuCr2O4) with spinel structure was successfully prepared by solid phase calcinations method at high temperature using copper oxide and chromium oxide as raw materials. The crystal structure，morphology and grain size of the CuCr2O4 were determined by XRD，SEM and the particle size analyzer respectively. The influence of processing parameters，such as the mixing process，the time of ball milling，calcination temperature and time of the precursor，on the crystal structure and grain size of the CuCr2O4 were studied in detail，and the effect of its tinting strength was systematically discussed by adding modifiers. The results show that high energy ball milling can effectively control the grain size and homogenization of particles in the pigment，and the tinting strength of pigment was greatly improved with the presence of NiO and CoO modifiers. The CuCr2O4 with strong tinting strength and particle size distribution uniformity was synthesized under the condition of ball milling for 10 minutes and calcination at 900 ℃ for 3 hours.