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通过在W、Mo连接板材间均匀铺填W -Mo粉末中间层 ,并加入 4Ni- 3Cu烧结剂 ,在实现W -Mo合金的热压烧结致密化的同时 ,完成了难熔金属W -Mo的低温连接 (15 73K) ,并制备出平行精度高、平面度好、致密度高的钨合金 -钼叠层飞片材料。其间详细探讨了W -Mo合金的烧结致密化机理和叠层飞片的界面连接机理。试验结果表明 ,由于低熔点Cu的添加 ,部分活性烧结剂Ni以液态形式存在 ,使元素W、Mo更易向Ni中溶解和扩散 ,增强了Ni对W、Mo的活化烧结作用 ,从而实现了W -Mo合金的烧结致密化 ;同时在烧结过程中 ,W/W -Mo和W/Mo -Mo的界面处也出现了液相 ,有利于W、Mo向界面处相互扩散 ,并完成了界面的连接。
The W-Mo powder interlayer was uniformly laid between the W and Mo connecting plates, and the 4Ni-3Cu sintering agent was added to complete the hot-press sintering densification of the W-Mo alloy while completing the W-Mo Low temperature connection (1573K), and prepared parallel high precision, flatness, high density tungsten alloy - molybdenum laminated flyer material. In the meantime, the sintering densification mechanism of W-Mo alloy and the interface connection mechanism of laminated flyer were discussed in detail. The experimental results show that due to the addition of low melting point Cu, some of the active sintering agent Ni exists in a liquid state, which makes the elements W and Mo more easily dissolved and diffused into Ni, thereby enhancing the activation and sintering of W and Mo by Ni, -Mo alloy sintering densification; at the same time in the sintering process, W / W -Mo and W / Mo-Mo interface also appeared in the liquid phase, is conducive to W, Mo interdiffusion at the interface, and the completion of the interface connection.