Pengaruh Temperatur Cetakan terhadap Kualitas Produk Komposit Aluminium - Multiwall Karbon Nanotube yang Dipabrikasi dengan Proses Stir Casting

Authors

  • I Dewa Made Pancarana Politeknik Negeri Bali
  • I Nyoman Budiartana Politeknik Negeri Bali

DOI:

https://doi.org/10.22236/teknoka.v5i.366

Keywords:

stir casting, komposit, aluminium, multiwall karbon nanotube

Abstract

Penelitian ini bertujuan menyelidiki pengaruh temperatur cetakan terhadap kualitas produk komposit aluminium – multiwall karbon nanotube yang dipabrikasi dengan methode liquid state processing (stir casting). Komposisi campuran aluminium dengan multiwall karbon nanotube adalah 98:2 persen berat. Proses peleburan bahan komposit menggunakan rangkaian pemanas induksi. Temperatur peleburan dipertahankan pada 700 oC selama 10 menit dan kecepatan pengaduk (stirrer) 200 rpm. Leburan komposit dituangkan pada cetakan logam (steel) berbentuk silinder dengan temperatur cetakan bervariasi, 25, 50, 75, 100, 125, dan 150 oC. Hasil produk komposit pada awalnya diamati secara visual, untuk selanjutnya dilakukan beberapa pengujian, antara lain : uji densitas, porositas, dan kekerasan komposit di Lab Metalurgi Jurusan Teknik Mesin Universitas Udayana, dan morfologi/struktur mikro menggunakan  alat uji SEM-EDS  di Lab. SEM Teknik Mesin  ITS. Dari pengamatan diperoleh beberapa kesimpulan, antara lain : semakin tinggi temperatur cetakan, massa jenis komposit aluminium – multiwall karbon nanotube semakin meningkat, namun porositasnya semakin menurun. Sementara semakin tinggi temperatur cetakan, kekerasan komposit aluminium – multiwall karbon nanotube semakin meningkat.

Author Biographies

I Dewa Made Pancarana , Politeknik Negeri Bali

Program Studi Teknik Mesin 

Fakultas Teknik

I Nyoman Budiartana, Politeknik Negeri Bali

Program Studi Teknik Mesin

Fakultas Teknik

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Published

2021-01-04