Karakterisasi Komposit Aluminium Berpenguat Al2O3 Nanokristalin Hasil Kopresipitasi

Authors

  • Noer Af'idah Universitas Hasyim Asy'ari Tebuireng Jombang, Indonesia
  • Oktaffi Arinna Manasikana Universitas Hasyim Asy'ari Tebuireng Jombang, Indonesia
  • Elly Indahwati Universitas Hasyim Asy'ari Tebuireng Jombang, Indonesia

DOI:

https://doi.org/10.33394/j-lkf.v10i1.5361

Keywords:

Komposit Al-Al2O3, Nanokomposit, Kopresipitasi, Al-Al2O3 Composite, Nanocomposite, Coprecipitation, Powder metallurgy Metalurgi serbuk,

Abstract

Pada saat ini kebutuhan terhadap komponen yang memiliki kemampuan struktural yang baik tetapi ringan telah mendorong perkembangan rekayasa material komposit bermatrik logam, salah satunya adalah komposit bermatrik aluminium. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh penguat Al2O3 nanokristalin hasil kopresipitasi terhadap sifat mekanik dan densitas dari komposit bermatrik aluminium. Berdasarkan hasil XRD (X-Ray Difractometer) menunjukkan bahwa serbuk Al2O3 (alumina) yang disintesis dengan menggunakan metode kopresipitasi mempunyai ukuran  kristal di bawah 100 nm. Selanjutnya serbuk alumina hasil kopresipitasi ini digunakan sebagai penguat (filler) dalam fabrikasi komposit bermatrik aluminium. Komposit difabrikasi dengan menggunakan metode metalurgi serbuk dan metode pencampuran basah (wet mixing) dengan media pencampur etanol. Campuran serbuk komposit dimasukkan dalam cetakan dengan diberi gaya tekan sebesar 15 KN selama 15 menit. Tahap pemanasan dilakukan dua kali yaitu pre-sintering pada suhu 2000C dan 4000C masing-masing 20 menit serta tahap sintering pada suhu 5000C selama 1 jam. Komposit aluminium dengan penguat alumina mikrokristalin juga dibuat sebagai pembanding. Hasil pengukuran densitas nanokomposit menunjukkan adanya peningkatan sebesar 1,74% dari mikrokomposit, sedangkan dari hasil uji kekerasan menggunakan microhardness tester menunjukkan peningkatan sebesar 37,98% dari mikrokomposit sebagai sampel pembanding.
Characterization of Coprecipitation Nanocrystalline Al2O3 Reinforced Aluminum Composite
Abstract
At this time, the need for components with good structural capabilities but are light in weight has encouraged the development of metal matrix composite material engineering, one of which is aluminum matrix composites. The purpose of this research was to determine the effect of coprecipitation nanocrystalline Al2O3 reinforcement on the mechanical properties and density of aluminum matrix composites. Based on the results of XRD (X-Ray Diffractometer) showed that Al2O3 (alumina) powder synthesized using the coprecipitation method had a crystal size below 100 nm. Furthermore, the coprecipitation alumina powder is used as a filler to fabricate aluminum matrix composites. This aluminum matrix composite was fabricated using the powder metallurgy method and wet mixing method with ethanol mixing media. The composite powder mixture was put into the mold with a compressive force of 15 KN for 15 minutes. The heating stage was carried out twice, namely pre-sintering at a temperature of 2000C and 4000C each for 20 minutes and the sintering stage at 5000C for 1 hour. An aluminum composite with microcrystalline alumina reinforcement was also made for comparison. The results of the measurement of the density of the nanocomposite showed an increase of 1.74% from the micro composite, while the hardness test using the microhardness tester showed an increase of 37.98% from the micro composite as a comparison sample.

Author Biography

Noer Af'idah, Universitas Hasyim Asy'ari Tebuireng Jombang

Pendidikan IPA Fakultas Ilmu Pendidikan

References

Hanafi, H., Munasir, M., & Zainuri, M. (2016). Studi Sifat Mekanik Komposit Isotropik Al/SiO2 Hasil Fabrikasi dengan Metalurgi Serbuk. Jurnal Fisika dan Aplikasinya, 12(2), 61–65. https://doi.org/10.12962/j24604682.v12i2.1331

Iswandi, Sulong, A. B., & Sahari, J. (2019). Effect Of Graphite /Polipropilene On The Electrical Conductivity Of Manufactured Bipolar Plate. Malaysian Journal of Analytical Science, 23(2), 355–361. https://doi.org/10.17576/mjas-2019-2302-19

Kamariyah, E. I. N. (2007). Sintesis Serbuk Nanokristalin Al2O3, MgO dan MgAl2O4 dengan Metode Kopresipitasi. Tugas Akhir, Institut Teknologi Sepuluh Nopember, Surabaya.

Kheder, A. R. I., Marahleh, G. S., & Al-Jamea, D. M. K. (2011). Strengthening of Aluminum by SiC, Al2O3 and MgO. Jordan Journal of Mechanical and Industrial Engineering, 5(6), 533–541.

Sayuti, M., Sulaiman, S., Vijayaram, T. R., Baharudin, B. T. H. T., & Arifi, M. K. A. (2012). Manufacturing and Properties of Quartz (SiO2) Particulate Reinforced Al-11.8%Si Matrix Composites. In N. Hu (Ed.), Composites and Their Properties. InTech. https://doi.org/10.5772/48095

Suprapto, I. W. L., Suarsana, K., & Santhiarsa, I. G. N. N. (2017). Efek Komposisi Dan Perlakuan Sintering Pada Komposit Al/(Sicw+Al2o3) Terhadap Sifat Fisik, Dan Keausan. Jurnal Mettek: Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin, 3(1), 36–43.

Widyastuti, Siradj, E. S., Priadi, D., & Zulfia, A. (2010). Kompaktibilitas Komposit Isotropik Al/Al2O3 Dengan Variabel Waktu Tahan Sinter. Makara Journal of Science. https://doi.org/10.7454/mss.v12i2.502

Downloads

Published

2022-06-30

How to Cite

Af’idah, N., Manasikana, O. A., & Indahwati, E. (2022). Karakterisasi Komposit Aluminium Berpenguat Al2O3 Nanokristalin Hasil Kopresipitasi. Lensa: Jurnal Kependidikan Fisika, 10(1), 8–15. https://doi.org/10.33394/j-lkf.v10i1.5361

Issue

Vol. 10 No. 1: June 2022

Section

Articles

Citation Check

License

Authors who publish with Lensa: Jurnal Kependidikan Fisika agree to the following terms:

  1. For all articles published in Lensa: Jurnal Kependidikan Fisika, copyright is retained by the authors. Authors give permission to the publisher to announce the work with conditions. When the manuscript is accepted for publication, the authors agree to automatic transfer of the publishing right to the publisher.
  2. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
  3. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
  4. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.