STRUCTURAL AND MICROSTRUCTURAL CHARACTERIZATION OF CUMO(1- X)WXO4 (X ≤ 0.12) CERAMICS SINTERED BY SPARK PLASMA SINTERING
Keywords:
Spark plasma sintering (SPS), Chemical preparation, Structural phase transition, Molybdate, Tungsten.Abstract
Cupric molybdate CuMoO4 is an interesting material due to their rich electrical, optical and magnetic properties. In this work, Solid solutions CuMo(1-x)WxO4 (x≤0.12) were obtained by pyrolysis at 400 -700°C for 2 hours of a polymeric precursors elaborated by polymerizable complex method. For x ≤ 0.075, they were isostructural with α-CuMoO4 and for 0.075<x≤0.12, they were isostructural with γ-CuMoO4. Spark Plasma Sintering (SPS) at 300°C for 5 min under an applied pressure of 200 MPa led to variety CuMoO4-III for tungsten contents in the range 0.075-0.12.
