【摘要】 合成了2种具有层状钙钛矿结构的热致相变材料四溴合铜酸癸铵(nC10H21NH3)2CuBr4(简记C10Cu)和四溴合铜酸十二铵(nC12H25NH3)2CuBr4(简记C12Cu),并在2种材料的乙酸溶液中结晶出一系列C10Cu C12Cu二元体系.利用差热分析(DTA)和X射线衍射(XRD)构筑了C10Cu C12Cu二元体系相图.在实验相图中确定了新的稳定化合物C10C12Cu的存在和2个不变的共晶点,共晶点温度分别为35℃和30℃.与同类体系的其他相图相比,在此相图的左右边界和中间区域存在3个显著的固溶区.更多还原

【Abstract】 Thermotropic phase transition compounds with the perovskite type layer structure,(n-(C₁₀H₂₁)NH₃)₂CuBr₄ and(n-(C₁₂H₂₅NH₃)₂)CuBr₄ were synthesized.A series of binary phases C₁₀CuC₁₂Cu were crastalized from the acetic acid solutions of their mixtures.The experimental binary phase diagram of(C₁₀CuC₁₂Cu) was established by differential thermal analysis（DTA） and X-ray diffraction（XRD）.In the phase diagram,new stable material(n-C₁₀H₂₁NH₃)(n-C₁₂H₂₅NH₃)CuBr₄,and two eutectoid invariants with the eutectic point temperature of 35 and 30?℃ were observed.Compared with the phase diagrams of other similar systems,there were three noticeable solid solution ranges at the left boundary,right boundary and middle of the phase diagram respectively.更多还原