研究W-Cu粉末轧制生坯制各流程的客观化判据,初步得到W-Cu粉轧生坯制备的客观方法框架.基于混料扭矩的变化趋势,确定粉末与粘结剂的最佳配比.基于差热/热重分析结果,确定粉体的烘干温度和烘干时间.基于质量守恒定律,确定粉轧生坯的致密度.研究方法以材料自身的物理和化学特性指标为依据,能够很大程度减少人为因素的影响,提高粉轧生坯制备流程的稳定性.
Objective criterion for the preparation process of W-Cu green sheet by powder rolling was investigated, and an objective methodology frame for the preparation was obtained. Based on the change tendency of mixed behavior, the optimum ratio between powder and adhesive was obtained. Based on differential thermal and thermo-gravimetric analysis results, the drying temperature and drying time of powder was determined. Based on the law of conservation of mass, the density of the powder-rolled green sheet was determined. According to materials' own physical and chemical property index, the effect of human elements can be weakened, and thus the stability of preparation process of green sheet by powder roiling can be increased.
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