Raman spectroscopic study on structure and phase transition of zirconium tungstate synthesized with a CO2 laser

摘要：

　　Negative thermal expansion material of ZrW2O8 has been successfully synthesized by rapid solidification with a CO2 laser.The materials solidified in densely packed blocks with both smooth surface and dark green color.Raman spectroscopic and XRD analysis reveal that the samples solidified in an orthorhombic structure.It is analyzed that the compressive stress can be effectively reduced by lowering the laser scan speed.ZrW2O8 samples with cubic structure were produced when the laser scan speed was less than 2mm/s.The samples cooled by water are mainly dominated by α phase which demonstrates that a phase transition from γ to α has occurred after annealing.

作者: J P wang Q D chen

作者单位: Faculty of Aerospace Engineering,Binzhou University,Binzhou 256603,China

会议类型: 国际会议

会议名称: 第二届新型材料与化学工业国际学术会议

会议地点: 三亚

会议语种:英文

页码: 1-6

在线出版日期: 2017-11-18（万方平台首次上网日期，不代表论文的发表时间）