Fabrication of Lotus Nickel Through Thermal Decomposition Method of Compounds under Ar Gas Atmosphere

Sang-Youl Kim; Bo-Young Hur; Hideo Nakajima

Korean Journal of Materials Research, Vol.19, No.5, 270-275, May, 2009

DOI10.3740/MRSK.2009.19.5.270 Export Citation

Fabrication of Lotus Nickel Through Thermal Decomposition Method of Compounds under Ar Gas Atmosphere

Sang-Youl Kim^†, Bo-Young Hur , and Hideo Nakajima¹

ERI, i-Cube Center, Gyeongsang National University, 900 Kajoa-Dong Jinju 660-701 Korea
¹The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan, Korea

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Lotus-type porous nickel with cylindrical pores was fabricated by unidirectional solidification under an Ar gas atmosphere using the thermal decomposition method of the compounds such as sodium hydroxide, calcium hydroxide, calcium carbonate, and titanium hydride. The decomposed gas does form the pores in liquid nickel, and then, the pores become the cylindrical pores during unidirectional solidification. The decomposed particles from the compounds do play a rule on nucleation sites of the pores. The behavior of pore growth was controlled by atmosphere pressure, which can be explained by Boyle’s law. The porosity and pore size decreased with increasing Ar gas pressure when the pores contain hydrogen gas decomposed from calcium and sodium hydroxide and titanium hydride, ; however it they did not change when the pores contain containing carbon dioxide decomposed from calcium carbonate. These results indicate that nickel does not have the solubility of carbon dioxide. Lotus-type porous metals can be easily fabricated by the thermal decomposition method, which is superior to the conventional fabrication method used to pressurized gas atmospheres.

Keywords:lotus-type porous metal;thermal decomposition method;compound;hydrogen pores

[References]

Badichea X, Forest S, Guiberta T, Bienveun Y, Bartout JD, Ienny P, Croset M, Bernet H, Mater. Sci. Eng. A, 289, 276 (2000)
Banhart J, Prog. Mater. Sci., 46(6), 559 (2001)
Kim SY, Hur BY, Kwon CK, Ahn DK, Park SH, J. Kor. Inst. Met. & Mater., 40, 910 (2002)
Kim SY, Seong HG, Hur BY, Solid State Phenomena, 124, 1801 (2007)
Nakajima H, Prog. Mater. Sci., 52(7), 1091 (2007)
Shapovalov V, Boyko L, Adv. Mater. Eng, 6, 407 (2004)
Liu Y, Li Y, Wan J, Zhang H, Mater. Sci. Eng.: A, 402, 47 (2005)
Simone AE, Gibson LJ, J. Mater. Sci., 32(2), 451 (1997)
Simone AE, Gibson LJ, Acta Mater., 44, 1437 (1996)
Hyun SK, Murakami K, Nakajima H, Mater. Sci. Eng.: A, 299, 241 (2001)
Ide T, Tane M, Hyun SK, Nakajima H, Mater. Trans., 47, 2116 (2006)
Onishi H, Hyun SK, Nakajima H, Mater. Trans., 47, 2120 (2006)
Nakajima H, Ide T, Metall. Mater. Trans. A, 39, 390 (2008)
The Wikipedia On the Web. Retrieved January 6, 2009 from http://en.wikipedia.org/wiki/ Sodium_hydroxide. (2009)
The Wikipedia On the Web. Retrieved January 6, 2009 from http://en.wikipedia.org/wiki/ Calcium_hydroxide. (2009)
Ahn DK, Hur BY, Kim SY, Park SH, Ahn HJ, Park SJ, J. Kor. Inst. Met.& Mater., 40, 915 (2002)
Yang DH, Hur BY, Yang SR, J. Alloy Comp., 461, 221 (2008)
Onishi H, Ueno S, Hyun SK, Nakajima H, Metall. Mater. Trans. A, 40, 438 (2008)
Kim SY, Park JS, Nakajima H, Metall. Mater. Trans. A, 40, 937 (2009)

[Related Articles]

[1] Badichea X, Forest S, Guiberta T, Bienveun Y, Bartout JD, Ienny P, Croset M, Bernet H, Mater. Sci. Eng. A, 289, 276 (2000)

[2] Banhart J, Prog. Mater. Sci., 46(6), 559 (2001)

[3] Kim SY, Hur BY, Kwon CK, Ahn DK, Park SH, J. Kor. Inst. Met. & Mater., 40, 910 (2002)

[4] Kim SY, Seong HG, Hur BY, Solid State Phenomena, 124, 1801 (2007)

[5] Nakajima H, Prog. Mater. Sci., 52(7), 1091 (2007)

[6] Shapovalov V, Boyko L, Adv. Mater. Eng, 6, 407 (2004)

[7] Liu Y, Li Y, Wan J, Zhang H, Mater. Sci. Eng.: A, 402, 47 (2005)

[8] Simone AE, Gibson LJ, J. Mater. Sci., 32(2), 451 (1997)

[9] Simone AE, Gibson LJ, Acta Mater., 44, 1437 (1996)

[10] Hyun SK, Murakami K, Nakajima H, Mater. Sci. Eng.: A, 299, 241 (2001)

[11] Ide T, Tane M, Hyun SK, Nakajima H, Mater. Trans., 47, 2116 (2006)

[12] Onishi H, Hyun SK, Nakajima H, Mater. Trans., 47, 2120 (2006)

[13] Nakajima H, Ide T, Metall. Mater. Trans. A, 39, 390 (2008)

[14] The Wikipedia On the Web. Retrieved January 6, 2009 from http://en.wikipedia.org/wiki/ Sodium_hydroxide. (2009)

[15] The Wikipedia On the Web. Retrieved January 6, 2009 from http://en.wikipedia.org/wiki/ Calcium_hydroxide. (2009)

[16] Ahn DK, Hur BY, Kim SY, Park SH, Ahn HJ, Park SJ, J. Kor. Inst. Met.& Mater., 40, 915 (2002)

[17] Yang DH, Hur BY, Yang SR, J. Alloy Comp., 461, 221 (2008)

[18] Onishi H, Ueno S, Hyun SK, Nakajima H, Metall. Mater. Trans. A, 40, 438 (2008)

[19] Kim SY, Park JS, Nakajima H, Metall. Mater. Trans. A, 40, 937 (2009)