PAS법을 이용한 Ni기 비정질 분말의 소결

구자민; 신기삼; 김윤배; 배종수; 허성강; Ja Min Koo; Keesam Shin; Yoon Bae Kim; Jong Soo Bae; Sung Kang Hur

Korean Journal of Materials Research, Vol.15, No.12, 765-772, December, 2005

DOI10.3740/MRSK.2005.15.12.765 Export Citation

PAS법을 이용한 Ni기 비정질 분말의 소결

Sintering of Ni-Based Amorphous Alloy Powders by Plasma Activated Sintering Process

구자민, 신기삼, 김윤배¹, 배종수², 허성강^†

창원대 나노 신소재공학부
¹한국과학기술연구원 자성재료 그룹
²한국기계연구원

Ja Min Koo, Keesam Shin, Yoon Bae Kim¹, Jong Soo Bae², and Sung Kang Hur^†

School of Nano and Advanced Materials, Changwon National University, Changwon 641-773, Korea
¹Magnetic Materials Group, KIST, Seoul Korea, 136-761
²Powder Metallurgy Group, KIMM, Changwon Korea, 641-831

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PAS(Plasma Activated Sintering) process was tried to apply for the fabrication of BMG(Bulk Metallic Glasses) of [Math Processing Error] from the as-atomized amorphous powder. Compressive strength for the BMG(bulk Metallic Glasses) of [Math Processing Error] were lower than those of BMG rods produced by warm extrusion ,or copper mold casting method. Microstructural examination by optical microcope, SEM ana EDS showed that oxidation had occurred during PASintering. In order to prevent the powder from the oxidation during PASintering, Ni coating for [Math Processing Error] amorphous powder by electroless-plating method was performed. Microstructural examination for Ni coated layers after PASintering indicated that the Ni coating had been so effective to prevent powder from oxidation during PASintering. Sintering behaviors of [Math Processing Error] represent the same as those of [Math Processing Error] .

Keywords:PAS(Plasma Activated Sintering);Ni based amorphous alloy;Electroless-plating

[References]

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[1] Yi S, Lee JK, Kim WT, Kim DH, Journal of Non-crystalline Solids, 291(1-2), 132 (2001)

[2] Bae DH, Lee MH, Yi S, Kim DH, Sordelet DJ, Journal of Non-crystalline Solids, 337(1), 15 (2004)

[3] Bae DH, Lee MH, Kim DH, Applied Physics Letters, 83(12), 2312 (2003)

[4] Lee MH, Bae DH, Kim WT, Kim DH, Rozhkova E, Wheelock PB, Sordelet DJ, Journal of Non-crystalline Solids, 315(1-2), 89 (2003)

[5] Lee MH, Lee JY, Bae DH, Kim WT, Sordelet DJ, Kim DH, Intermetallics, 12(10-11), 1133 (2004)

[6] Fleury E, Lee JH, Kim SH, Kim JS, Kim DH, Metall. Mater. Trans. A, 34A, 841 (2003)

[7] Tokita M, Journal of Soc. of Powder Technology Japan, 30(11), 790 (1997)

[8] Takao M, Akinobu K, Akihiro M, Inoue Akihisa .Masumoto Ken Proc. of IMR Workshop for the Spark Plasma Sintering, Tohoku Univ. Sendai, Sept. 12th, 23 (1996)

[9] Yoon Bae Kim, Private communication

[10] Groza JR, ASM Handbook Vol.7, ASM International, 583 (1998) (1998)

[11] Wang X, Youchi I, Inoue A, Kim YH, Kim IB, Mater. Trans JIM, 38, 1130 (1997)

[12] Lee MH, Park JS, Kim JH, Bae DH, Kim WT, Kim DH, Materials Letters, 58(26), 3312 (2004)

[13] Shinich W, Proc. of IMR Workshop for the Spark Plasma Sintering, Tohoku Univ. Sendai, Sept. 12th, 5 (1996) (1996)

[14] Yi S, Park TG, Kim DH, J. Mater.Res., 115(11), 2425 (2000)