It is found that , the sintering process of w - ni - fe - cu alloy was a typical liquid - phase process , which including particle rearrangement stage , dissolving - precipitation stage and solid - phase sintering stage . cu plays an important role in the particle rearrangement stage , while fe can promote the densification by forming ni - fe - w bonding - phase . ni can not only form the bonding - phase , but also enhance the diffusion between the w grains 研究表明, w - ni - fe - cu合金的液相燒結致密化經歷了顆粒重排、溶解-析出和固相燒結等三個階段, cu僅在顆粒重排階段起主導作用; fe主要在溶解-析出階段通過形成ni - fe - w三元粘結相來促進w合金的燒結致密; ni不僅參與形成ni - fe - w三元粘結相,并且在w晶界上通過與w的互擴散促進了固相w晶粒的粘合。