diffusion-sintering 中文意思是什麼
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Pulse electric current heat treatment ( pecht ) developed by sodick, ltd., of japan, is a recently developed material processing method which consists of spark plasma sintering and welding, plasma activated sintering and welding, big pulse electric current ( bpec ) diffusion welding etc. the following are basic merits of pecht : rapid heating and cooling ; short sintering or welding time ; lowering sintering or welding temperature
脈沖電流熱加工（ pulseelectriccurrentheattreatment ，比如燒結，焊接等）是九十年代發展起來的一種材料快速制備新技術，它包括放電等離子燒結與焊接、等離子活化燒結與焊接、脈沖大電流擴散焊接等。它具有升溫、降溫速度快、能在較低的溫度下燒結或焊接以及時間短的特點。 -
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合金的液相燒結緻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合金的燒結緻密； ni不僅參與形成ni - fe - w三元粘結相，並且在w晶界上通過與w的互擴散促進了固相w晶粒的粘合。
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