24小时热门版块排行榜

返回列表

乌克丽丽南京

银虫 (小有名气)

应助: 0 (幼儿园)
金币: 339.3
散金: 166
帖子: 85
在线: 24.7小时
虫号: 2960191
注册: 2014-02-09
性别: MM
专业: 催化化学

[求助] 翻译几句英文，我不能理解，可否解释一下。陶瓷，氧化铝，粉末微注射法相关

In the case of ceramic powder where finer particle
size is more easily available, there is a need to develop feedstocks
from powder of submicron or nano-particle size in order
to exploit the full potential of micro PIM. Processing such fine
particle size, especially nano-particles, poses problems because
of its large specific surface area and the associated tendency to
agglomerate. With the use of finer particle size more binder is
required to coat the surfaces of the particles and this can increase
the final shrinkage after sintering. In a survey of available powders,
only some powders are available in submicron particle size
and some examples are copper, iron, tungsten, cobalt, zirconia,
alumina and tungsten carbide. The general rule is that the minimum
feature that can be produced is ten times the particle size.
Thus, to produce smaller features or structural details, finer particle
size is required.
重点是最后两句，不理解什么意思

回复此楼