采用无压烧结的方法(在1550℃保温3小时)添加5wt.％MgO,5wt.％Y2Oa和不同含量的Re制造出了Si3N4-Re嬗变模拟靶材.研究了Re含量的不同对嬗变靶材致密度和抗弯强度的影响,并通过物相分析,显微组织和断口形貌观察对相关机理进行了分析.
Si3N4-Re transmutation targets with 5wt.％ MgO,5wt.％ Y2O3 and different content of Re were produced by pressureless sintering method (heating to 1550℃ and holding for 3 h).The effect of different content of Re to relative density and bending strength of Si3 N4-Re transmutation targets was investigated.Then XRD,EDS and SEM were carried out to identify phase and observe microstructure and fracture morphology to analyze related mechanism.
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