The Study of Copper Powder Sintering for Porous Wick Structures with High Capillary Force

被引:4
作者
Jang, Im-Nam [1 ]
Ahn, Yong-Sik [1 ]
机构
[1] Pukyong Natl Univ, Dept Mat Sci & Engn, Busan 48547, South Korea
关键词
sintering; wick; porosity; permeability; capillary force; CARBONATE; FABRICATION;
D O I
10.3390/ma16124231
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The porosity, permeability, and capillary force of porous sintered copper were examined in relation to the effects of copper powder size, pore-forming agent, and sintering conditions. Cu powder with particle sizes of 100 and 200 & mu;m was mixed with pore-forming agents ranging from 15 to 45 weight percent, and the mixture was sintered in a vacuum tube furnace. Copper powder necks were formed at sintering temperatures higher than 900 & DEG;C. The porosity, as determined by the Archimedes measurement method, and the permeability performance of the sintered body displayed higher values when the Cu powder size was uniform or small. To investigate the capillary force of the sintered foam, a test was conducted using a raised meniscus test device. As more forming agent was added, the capillary force increased. It was also higher when the Cu powder size was larger and the size of the powders was not uniform. The result was discussed in relation to porosity and pore size distribution.
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页数:12
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