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xwt790887443木蟲 (正式寫手)
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[求助]
關于空位擴散中不理解的地方 已有2人參與
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| "The vacancy concentration, as outlined earlier, is determined by the temperature, solute, and atmosphere. It should be noted that in vacancy diffusion, the flux of acanciesmust be compensated by an equal and opposite flux of atoms; otherwise, acancies would accumulate in the crystal and produce pores. Pore formation an actually occur during the interdiffusion of two atoms that have very different iffusion coefficients."這是《Ceremic Processing and Sintering》一書中擴散一章中的一段話,請問為什么說空位的集聚會造成孔洞呢?還有為什么說兩種不同擴散系數(shù)的原子相互擴散也會形成孔洞呢?請不吝賜教 |
銅蟲 (正式寫手)
木蟲之王 (文學泰斗)
peterflyer
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