Advanced SearchSearch Tips
Effect of Freezing and Sintering Condition of CuO-SnO2/Camphene Slurries on the Pore Structure of Porous Cu-Sn
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Effect of Freezing and Sintering Condition of CuO-SnO2/Camphene Slurries on the Pore Structure of Porous Cu-Sn
Kim, Joo-Hyung; Oh, Sung-Tag; Hyun, Chang-Yong;
  PDF(new window)
The present study demonstrates the effect of freezing conditions on the pore structure of porous Cu-10 wt.% Sn prepared by freeze drying of /camphene slurry. Mixtures of CuO and powders are prepared by ball milling for 10 h. Camphene slurries with 10 vol.% of are unidirectionally frozen in a mold maintained at a temperature of for 1 and 24 h, respectively. Pores are generated by the sublimation of camphene at room temperature. After hydrogen reduction and sintering at for 2 h, the green body of the is completely converted into porous Cu-Sn alloy. Microstructural observation reveals that the sintered samples have large pores which are aligned parallel to the camphene growth direction. The size of the large pores increases from 150 to with an increase in the holding time. Also, the internal walls of the large pores contain relatively small pores whose size increases with the holding time. The change in pore structure is explained by the growth behavior of the camphene crystals and rearrangement of the solid particles during the freezing process.
Porous Cu-Sn; powder mixture;Freeze-drying;Hydrogen reduction;Pore structure;
 Cited by
H. Nakajima: Prog. Mater. Sci., 52 (2007) 1091. crossref(new window)

M. J. Suk and Y. S. Kwon: J. Korean Powder Metall. Inst., 8 (2001) 215 (Korean).

P. S. Liu and K. M. Liang: J. Mater. Sci., 36 (2001) 5059. crossref(new window)

J. Banhart: Prog. Mater. Sci., 46 (2001) 559. crossref(new window)

D. H. Yang, B. Y. Hur and S. R. Yang: J. Alloys Comp., 461 (2008) 221. crossref(new window)

S.-H. Kim, Y.-W. Kim, J.-Y. Yun and H.-D. Kim: J. Korean Ceram. Soc., 41 (2004) 541 (Korean). crossref(new window)

Z.-Y. Deng, J.-F. Yang, Y. Beppu, M. Ando and T. Ohji: J. Am. Ceram. Soc., 85 (2002) 1961. crossref(new window)

S. Deville: Adv. Eng. Mater., 10 (2008) 155. crossref(new window)

T. Fukasawa, M. Ando, T. Ohji and S. Kanzaki: J. Am. Ceram. Soc., 84 (2001) 230. crossref(new window)

B.-H. Yoon, E.-J. Lee, H.-E. Kim and Y.-H. Koh: J. Am. Ceram. Soc., 90 (2007) 1753. crossref(new window)

S.-R. Bang and S.-T. Oh: J. Korean Powder Metall. Inst., 21 (2014) 191 (Korean). crossref(new window)

K. C. Jeon, B. S. Kim, Y. D. Kim, M.-J. Suk and S.-T. Oh: Int. J. Refract. Met. Hard Mater., 53 (2015) 32. crossref(new window)

M.-S. Kim, H.-S. Yoo, S.-T. Oh and C.-Y. Hyun: Kor. J. Mater. Res., 23 (2013) 722 (Korean). crossref(new window)

O. Mengual, G. Meunier, I. Cayre, K. Puech and P. Snabre:Talanta, 50 (1999) 445. crossref(new window)

B.-H. Yoon, W.-Y. Choi, H.-E. Kim, J.-H. Kim and Y.-H. Koh: Scr. Mater., 58 (2008) 537. crossref(new window)

K. Araki and J.W. Halloran: J. Am. Ceram. Soc., 87 (2004) 2014.

S. Deville, E. Maire, G. Bernard-Granger, A. Lasalle, A. Bogner, C. Gauthier, J. Leloup and C. Guizard: Nature Mater., 8 (2009) 966. crossref(new window)