利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN109306521A 电传导型Ca12Al14O32:2e-电子化合物的制造方法 失效 - 权利终止

电传导型Ca12Al14O32:2e-电子化合物的制造方法
摘要：
电传导型Ca12Al14O32:2e-电子化合物的制造方法属于钙铝石型无机电子化合物材料技术领域。将CaCO3粉末与Al2O3粉末以27:15的物质的量比混合均匀，并且于1450℃进行化学反应合成Ca12Al14O33与Ca3Al2O6共晶前驱体，此前驱体中Ca12Al14O33与Ca3Al2O6的物质的量比为2：1；将共晶前躯体与金属Al单质粉末混匀后，在Ar气环境下进行机械合金化，时间为15min；将机械合金化后的粉末原位反应合成电传导型Ca12Al14O32:2e-电子化合物；该制备方法5分钟内就制得电子浓度达到理论最大值2.3×1021cm-3，相对密度达到99.8％的多晶Ca12Al14O32:2e-电子化合物块体材料，且该方法简单高效，制备周期极短，成本低，易于实现批量化生产。
摘要（英）：

The invention relates to a method for preparing an electric conduction type Ca12Al14O32:2e-electron compound and belongs to the technical field of mayenite inorganic electron compound materials. The method comprises the steps: uniformly mixing CaCO3 powder and Al2O3 powder according to the mass ratio of 27: 15, and carrying out a chemical reaction at the temperature of 1,450 DEG C, so as to synthesize a eutectic precursor of Ca12Al14O33 and Ca3Al2O6, wherein the mass ratio of Ca12Al14O33 to Ca3Al2O6 in the precursor is 2: 1; uniformly mixing the eutectic precursor with elemental Al powder, andcarrying out mechanical alloying in an Ar gas environment for 15min; and subjecting the mechanical-alloyed powder to a reaction in situ, thereby synthesizing the electric conduction type Ca12Al14O32:2e-electron compound. According to the method, a polycrystalline Ca12Al14O32:2e-electron compound block material, of which the electron concentration reaches the theoretical maximum value of 2.3*10(21)/cm<3> and the relative density reaches 99.8%, can be prepared in 5 minutes; the method is simple and efficient, the preparation cycle is ultrashort, the cost is low, and batched production is easy to achieve.

公开/授权文献
0/0