와트 Ni 도금욕에서 도금 피막에 미치는 Al, Al 2 O 3 분산제 및 열처리의 영향

이상백; 박형호; 배인성; 윤재식; 김병일; Sang Baek Lee; Hyung Ho Park; In Sung Bae; Jae Sik Yoon; Byung Il Kim

Korean Journal of Materials Research, Vol.12, No.2, 153-159, February, 2002

DOI10.3740/MRSK.2002.12.2.153 Export Citation

와트 Ni 도금욕에서 도금 피막에 미치는 Al, Al 2 O 3 분산제 및 열처리의 영향

Effect of Al, Al 2 O 3 Dispersants and Heat Treatment on Deposits from Watt′s Ni Plating Bamth

이상백^†, 박형호¹, 배인성¹, 윤재식¹, 김병일²

자동차부품 및 소재연구개발센터
¹회유금속 소재 연구소
²순천대학교 재료 · 금속공학과

Sang Baek Lee^†, Hyung Ho Park¹, In Sung Bae¹, Jae Sik Yoon¹, and Byung Il Kim²

Research and Development Center for Automobile Parts and Materials, Korea
¹Korea Research Institute of Rare Metals, Korea
²Material Science and Metallurgical Engineering, Sunchon National University, Korea

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The co-deposited behavior was investigated under varied bath compositions and current densities from Watt Ni plating bath containing Al and A1 2 O 3 powders. For single-particle bath, Al and A1 2 O 3 particles were agglomerated. The area percentage of A1 2 O 3 on plating surface decreased with increasing the current density, while that of Al on plating surface increased. On the other hand, in case of double-particle bath with 1.25g/ ℓ of Al and 5.0g/ ℓ of A1 2 O 3 5g, the area percentage of Ni-Al-A1 2 O 3 increased with increasing current density and the surface morphology was fine without agglomeration. Intermetallic compounds such as γ 'and γ + γ ' phases appeared when the co-deposited film was annealed.

Keywords:The co-deposited behaviour;agglomeration;intermetallic compounds;Ni-Al-Al 2 O 3

[References]

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[1] Yum HT, Lee JS, Electroplating & Surface treatment, 162 (1988)

[2] Celis JP, Roos JR, Buelens CA, J. Electrochem. Soc., Mathematical model for the electrolytic codeposition of particles with a metallic matrix, 134, 1402 (1987)

[3] Barmak K, Banovic SW, Peteronis CM, Susan DF, Marder AR, J. Microscopy, Sturcture of electrodeposited graded composite coatings of Ni-Al-Al 2 O 3, 185, 265 (1997)

[4] Argyrion, Spyrellis, Nickel N, Trans. Inst. Metal Finishing., electrodeposition from all sulfate and chloride baths. Texture and microhardness, 71, 83 (1993)

[5] Ding XM, Merk N, Ilschner B, Particle Volume Graded Ni-Al 2 O 3 and Cu-Al 2 O 3 composite deposits : production and performance. FGM'94. Proc. 3rd Int.l Symp. 365-370 (1995) (1995)

[6] Lee YD, Park SH, J. Kor. Inst. Met. Mater., 6(1) (1993)

[7] Iron and Steel 73, S1193 (1987) (1987)

[8] Sheet Metal Industrials (1978) (1978)

[9] Susan DF, Barmak K, Marder AR, Thin Solid Films, 307(1-2), 133 (1997)

[10] Movchan BA, Demchisin AV, Phys. Met. Metallogr., Study of structure and properties of thick condensates of Ni, Ti, W, Al 2 O 3 and ZrO 2, 28, 83 (1969)

[11] Grovenor CRM, Hentzell HTG, Smith DA, Acta. Met., The development of grain structure growth of metallic films, 32(5), 773 (1984)

[12] Shives TR, Smith LC, Microindentation hardness measurements on metal powder particles, in: P.J. Blau, B.R. Lawn (Eds.), Microidentation Techniques in Materials Science and Engineering, ASTM, 243-257 (1985) (1985)

[13] Microindentation hardness measurements on metal powder particles, Shives TR, Smith LC, Blau PJ(ed.), Lawn BR(ed.), Microidentation Techniques in Materials Science and Engineering/ ASTM, pp.243-257, 1985 (1985)