PEMBENTUKAN NANOPARTIKEL PADUAN CoCrMo DENGAN METODA PEMADUAN MEKANIK

Sulistioso Giat Sukaryo, Wisnu Ari Adi

Abstract

Abstrak

Metoda pemaduan mekanik adalah reaksi padatan dari beberapa logam dengan memanfaatkan proses deformasi untuk membentuk suatu paduan. Pada penelitian ini dibuat paduan Co-Cr-Mo dengan  proses wet milling dengan variasi waktu milling selama 3, 5, 10, 20, dan 30 jam. Proses wet milling sangat efektif untuk mencegah terjadinya oksidasi dan juga memicu pembentukan paduan Co-Cr-Mo dengan baik. Hasil XRD menunjukkan bahwa telah terjadi pertumbuhan fasa γ pada durasi milling 3, 5, 10, 20, dan 30 jam, berturut-turut sebesar 42,80 %; 67,61 %; 82,94 %, 84,63 % dan 88,92 %. Ukuran kristalit fasa γ sebesar 25,9 nm; 12,5 nm; 5,1 nm dan 4,9 nm seiring dengan meningkatnya waktu milling. Disimpulkan bahwa telah berhasil dilakukan pembuatan paduan nanokristalin Co-Cr-Mo dengan metode pemaduan mekanik lebih dari 85 % dengan waktu milling minimum selama 30 jam.

 

Kata kunci : Co-Cr-Mo, pemaduan mekanik, nano-kristalin

 

Abstract

Synthesis of Co-Cr-Mo nano-crystalline by mechanical alloying has been carried out. Mechanical alloying is a solid state reaction of some metals by utilizing the deformation process to form an alloy. In this research, parameter milling time used for making Co-Cr-Mo alloy by wet milling process is 3, 5, 10, 20 and 30 h. Wet milling process is very effective to prevent oxidation and triggers the formation of fine Co-Cr-Mo alloys. Results of XRD pattern refinement shows that Co-Cr-Mo alloys was growth by percentage approximately around 42.80%, 67.61%, 82.94%, 84.63% and 88.92% for milling time 3, 5, 10, 20, and 30 h, respectively. Otherwise, crystalline size measurement after milling time 5, 10, 20, and 30 h obtained around 25.9 nm, 12.5 nm, 5.1 nm and 4.9 nm, respectively. This research concluded that the optimum milling time could obtained synthesizes nano-crystalline of Co-Cr-Mo alloy more than 85% is 30 h.

 

Keywords: Co-Cr-Mo alloy, mechanical alloying,  nano-crystalline

Keywords

Paduan Co-Cr-Mo; Pemaduan mekanik; Nano-kristalin;Co-Cr-Mo alloy; Mechanical alloying; Nano-crystalline

Full Text:

PDF

References

DAFTAR PUSTAKA

Fatur. 2008. Angka Kecelakaan tahun 2008 Meningkat Tajam. http://trijayafmplg.wordpress.com/2008/12/16/angka-kecelakaan-tahun-2008-meningkat-tajam/. [diakses ???13 diakses Januari 2009].

Sánchez-De Jesús F, Bolarín-Miró A, et.al. 2010. Mechanical alloying of biocompatible Co-28Cr-6Mo alloy.. J. MATERS SCI. MATERS. IN MEDICINE, , 21(7), 2021-2026.

S. K. Vajpai, R. K. Dube et al. 2010. Studies on the mechanism of the structural evolution in Cu–Al–Ni elemental powder mixture during high energy ball milling. Chemistry and Materials Science .Journal of Materials Science Volume 44, Number 16, 4334-4341,.

Xiao-Wu Nie, Chun-Lin Niu, et.al. 2009. High Temperature Oxidation of Cr-25Nb Alloy Synthesized by Mechanical Alloying and Hot Pressing. The Open Corrosion Journal, , 2, 125-129

Hadi Suwarno, Wisnu A. A. et al .2007. The X ray Diffraction analyses on the mechanical alloying of the Mg2Ni Formation. International Conference Solid

State Ionic Proceeding, PTBIN.

Wisnu Ari A , Hadi suwarno. 2009. Preparasi Ultra Fine Grain Paduan Hibrida

Logam system Mg-Fe menggunakan teknik mechanical milling untuk Hidrogen

storage. J.Teknik Bahan Nuklir . Vol.5 No.1..

HARRIS, J.R. 2002 Matemathical Modelling of Mechanical Alloying, Thesis submitted to The University of Nottingham for the degree of Doctor of Physlosophy.

IZUMI, F. 1994. Rietan Manual, (private communication).

Casa Study 2006. Mechanical Alloying. http://www.msm.cam.ac.uk/phase-trans/pubs/pt2.html#mechanical. Diakses Januari 2010

Kevin M. Fox. 2009. Mechanical alloying and thermal treatment for production of zirconium-iron hydrogen isotope getters. Journal of Ceramic Processing Research. Vol. 10, No. 6, pp. 705~709 .

Anna Antolak, Marek Krasnowski. Et.al. 2004. Phase Transformation During Mechanical Alloying of Nickel Aluminides and Subsequent Heating of Milling Product.Rev.Adv.Mater.Sci. 8. 111 – 115.

.

M. Abe , T. Kokaji .2005. Hydrogen Absorption Characteristics of a FeTi Alloy Nano-Structured by Mechanical Alloying and Its Application to a Hydrogen Storage System. Proceedings International Hydrogen Energy Congress and Exhibition IHEC 2005 Istanbul, Turkey,.

W. Pilarczyk , R. Nowosielski, et.al 2009. The structural study of Ti-Si-C alloys produced by mechanical alloying method. Archives of Materials Science and

Engineering . Volume 38 . Pages 78-84.

Hakan GAŞAN, Osman Nuri ÇELİK. 2008 . An Investigation Of morphization in Fe-Al alloys during mechanical alloying . Eng&Arch.Fac. Eskişehir smangazi University, Vol. .XXI, No:1,

Copyright (c) 2016 Metalurgi

Refbacks

  • There are currently no refbacks.