Fe掺杂Nd_(2)Si_(2)O_(7)陶瓷颜料的制备与光谱特性研究

Spectral Characteristics And Preparation of Fe-doped Nd_(2)Si_(2)O_(7) Ceramic Pigments

采用柠檬酸溶胶-凝胶法,以Nd_(2)Si_(2)O_(7)为基体,通过Fe^(3+)部分取代Nd^(3+),形成Nd_(2-x)Fe_(x)Si_(2)O_(7)化合物,考察了掺杂前后基体的结构和光谱特性。结果表明:Fe^(3+)掺杂不会改变基体的物相组成,但Fe^(3+)的引入降低了新相的形成温度。未掺杂的试样呈现浅紫色,掺杂Fe^(3+)的试样呈现暗红色。Fe^(3+)掺杂对试样近红外反射率有影响,热处理1 000℃的Nd_(2)Si_(2)O_(7)试样的平均近红外反射率为60.57%,而Fe_(0.3)Nd_(1.7)Si_(2)O_(7)试样的近红外反射率可高达88.04%。

Nd_(2-x)Fe_(x)Si_(2)O_(7) powder was prepared by a citric acid sol-gel method using Nd_(2)Si_(2)O_(7) as a matrix by partly replacing from Nd^(3+) to Fe^(3+).The structure and spectral characteristics of the Nd_(2-x)Fe_(x)Si_(2)O_(7) powder were investigated.The addition of Fe leads to decrease the formation temperature of new phase.The composition of new phase is not change.The undoped sample is light purple,and the Fe-doped sample is dark red.Fe^(3+) doping has an effect on the near-infrared reflectivity of the sample.The average near-infrared reflectance of the Nd_(2)Si_(2)O_(7) sample heat-treated at 1 000 ℃ is 60.57%,while that of the Fe_(0.3)Nd_(1.7)Si_(2)O_(7) sample is 88.04%.