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coobie

铜虫 (小有名气)

[交流] 【请教】请教一个词

Ostwald ripening
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daixj21

木虫 (知名作家)

小木虫税务总局局长——水虫

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骑着蜗牛追火箭(金币+2,VIP+0):很形象! 9-8 18:56
coobie(金币+1,VIP+0): 9-9 13:15
Oswald ripening 奥斯特瓦尔德熟化

Oswald Ripening
On prolonged heat treatment, the precipitates coarsen to decrease the interfacial free energy between the precipitate and the matrix. This process is called Oswald ripening.
During Oswald ripening the volume fraction Vf of precipitates remains constant and the diameter of the precipitates increases. Small particles dissolve and the resultant material deposits on larger particles causing them to grow.




Basic schematic of the Ostwald ripening process
Ostwald ripening is an observed phenomenon in solid (or liquid) solutions which describes the evolution of an inhomogenous structure over time. The phenomenon was first described by Wilhelm Ostwald in 1896.[1] When a phase precipitates out of a solid, energetic factors will cause large precipitates to grow, drawing material from the smaller precipitates, which shrink
自觉纳税光荣偷税漏税可耻.............——木虫税务局
6楼2009-09-08 13:47:15
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liuruiphd

木虫 (著名写手)


coobie(金币+1):谢谢参与
就是所谓的熟化过程,大晶体以小晶体消失为代价得到生长。
2楼2009-09-08 12:24:56
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sduyzj

木虫 (著名写手)


coobie(金币+1):谢谢参与
奥斯瓦尔德熟化,即晶体生长过程中由于大小晶体的表面能的不同,而发生的溶解-重结晶过程。
Everything begins with you
7楼2009-09-08 14:42:27
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hfut1879

至尊木虫 (文坛精英)


coobie(金币+1):谢谢参与
一个专有名词,奥斯瓦尔德熟化
8楼2009-09-08 15:08:01
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