粒徑分佈與d10 or d90 的關係是啥~~~贈15點

Question

最近在paper上看到一ㄍ專有名詞叫"粒徑分佈"也有人叫"粒度分佈"
英文是particle size distribution
可是paper後面的particle size是寫說 d10 = 1.9 d50=3.8 d90=11
請問這是什麼意思ㄋ~~
全文是:

^^^carbon^^^^^^^^^^^^particle size(um)^^^^^^^^^^surface area(比表面積)
^^^^^^^^^^^^^^ d10^^^^^^^d50^^^^^^^^^d90
^^^^Cl^^^^^^^^^1.9^^^^^^^3.8^^^^^^^^^^11^^^^^^^^^^^^^^^49
^^^^CG^^^^^^^^0.4^^^^^^^0.8^^^^^^^^^^1.5^^^^^^^^^^^^^^106
^Graphite^^^^^^4.2^^^^^^^^15^^^^^^^^^^^35


就大概是這樣~~可是看不太懂 d10& d50 & d 90是啥
另外一ㄍ問題就是Cl 與CG 是什麼??
看PAPERㄉ意思這2種都是碳ㄉ意種型式~~~請問有完整ㄉ資料ㄇ
^^ 謝謝各位大大煩心ㄌ


carbon particle size(um) surface area(比表面積)
d10 d50 d90
Cl 1.9 3.8 11 49
CG 0.4 0.8 1.5 106
Graphite 4.2 15 35 很像不能有空格~~只好以^^表示

你好力害唷~~我可以請教您是如何找到這些資料ㄉㄋ?
"

那請問你的關鍵字是如何描述ㄉ

Answer 1

這是用來表示particle size 分佈的一種表示方示.d10 = 1.9  代表粒徑< 1.9um 的顆粒佔所有粉末顆粒的10% (體積)d50 = 3.8  代表粒徑< 3.8um 的顆粒佔所有粉末顆粒的50% (體積)d10 = 11  代表粒徑< 11um 的顆粒佔所有粉末顆粒的90% (體積)至於 C 的同素異性體除了Diamond 和 Graphite還有:1.Fullerenes: Structure: comparatively large molecules formed completely of carbon bonded trigonally, forming spheroids (of which the best-known and simplest is the buckminsterfullerene or buckyball, because of its soccerball-shaped structure). 2.Chaoite: A mineral believed to be formed in meteorite impacts. 3.Lonsdaleite: A corruption of diamond. Structure: similar to diamond, but forming a hexagonal crystal lattice. 4.Amorphous carbon: A glassy substance. Structure: an assortment of carbon molecules in a non-crystalline, irregular, glassy state. 5.Carbon nanofoam (discovered in 1997): An extremely light magnetic web. Structure: a low-density web of graphite-like clusters, in which the atoms are bonded trigonally in six- and seven-membered rings. 6.Carbon nanotubes: Tiny tubes. Structure: each atom is bonded trigonally in a curved sheet that forms a hollow cylinder. 7.Aggregated diamond nanorods (synthesised in 2005): The most recently discovered allotrope and the hardest substance known to man. 8.Lampblack: Consists of small graphitic areas. These areas are randomly distributed, so the whole structure is isotropic. 9.'Glassy carbon': An isotropic substance that contains a high proportion of closed porosity. Unlike normal graphite, the graphitic layers are not stacked like pages in a book, but have a more random arrangement. 由你的資料判讀: Cl: Lampblack ; CG: Glassy Carbon

2006-09-20 13:28:50 補充：
1. 我是歐吉桑2.利用網路資源,http://en.wikipedia.org/wiki/Main_Page是個好地方