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Nelson 發問時間: 社會與文化語言 · 1 0 年前

有甚麼方法可測自己擴散 (self-diffusion)

這是材料科學與工程的問題,請幫幫忙。self-diffusion involves the motion of atoms that are all of the same;therefore it is not subject to observation by compositional changes,as with interdiffusion,suggest one way in which self-diffusion may be monitor.若可以的話請用中文回答

1 個解答

  • 1 0 年前



    According to the 2nd edition of the IUPAC Compendium of Chemical Terminology (1997), self-diffusion coefficient is the diffusion coefficiet of species i when the chemical potential gradient equals zero. It is linked to the diffusion coefficient Di by the equation:

    Here, ai is the activity of the species i in the solution and ci is the concentration of i.

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