通过溶胶-凝胶燃烧法制备了具有立方相的尖晶石型NiCr₂O₄颜料，并采用TG/DSC、XRD、FTIR 和SEM 等手段对其进行表征和研究。结果表明：将燃烧后的粉末于900 ℃下煅烧2 h 可以得到单一相的NiCr₂O₄，温度达不到900 ℃时所得粉末(包括燃烧后粉末和500 和700 ℃煅烧得到的粉末)为NiO 和Cr₂O₃组成的混合物。利用紫外/可见/近红外分光光度计仔细研究了燃烧后粉末和煅烧后粉末的颜色参数。尽管具有相同的成分，500 和700 ℃下煅烧得到的粉末与燃烧后粉末却具有明显不同的颜色，这可从一氧化镍为非整比化合物的角度加以解释。此外，900 和1000 ℃下煅烧得到的NiCr₂O₄粉末呈现出随温度变化的绿色。

Cubic spinel NiCr₂O₄, as a pigment, was synthesized via a sol-gel combustion method and characterized using TG/DSC, XRD, FTIR and SEM techniques. The results reveal that a single-phase NiCr₂O₄ with the cubic structure is obtained after heat treatment of the as-burnt powder at 900 ℃ for 2 h. The powders obtained below 900 ℃ appear as a mixture of NiO and Cr₂O₃. The color parameters for the as-burnt powder and the powder calcined at various temperatures were studied using PerkinElmer Lambda 950 UV-Vis-NIR spectrometer. Although having the same compositions, the 500 and 700 ℃ calcined powders show a different color (black) from the as-burnt powder (black green). This phenomenon may be interpreted in tennis of non-stoichiometry in NiO crystals. Moreover, the as-prepared spinel NiCr₂O₄ powders calcined at 900 and 1 000 ℃ show green color which changes with the calcination ternperature.