Dewantara, Mahardika Kurnia (2016) Pengaruh Temperatur Warm Kompaksi Dan Tekanan Kompaksi Terhadap Sifat Mekanik Komposit Cu-10%Sn + 0,6% Zinc Stearate Sebagai Material Peluru Frangible Mahardika Kurnia Dewantara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Peluru frangible adalah peluru yang didesain untuk hancur saat
mengenai target yang keras. Pada umumnya proses pembuatan
peluru frangible dilakukan menggunakan metode cold
compaction. Namun cold compaction memiliki beberapa tahapan
yang memerlukan waktu yang cukup lama. Metode warm
kompaksi ini menggabung tahapan kompaksi dan sintering
menjadi satu tahap sehingga mengurangi waktu produksi. dalam
penelitian ini dilakukan dengan proses (1) Wet Mixing Cu-
10%wtSn + 0,6%wt zinc stearate, (2) kompaksi dengan variasi
temperatur 100, dan 200OC dan tekanan 300, 400, 500 600 Mpa
dan waktu tahan 10 menit. Berdasarkan pengujian densitas
didapatkan densitas terbesar dan porositas terendah pada
temperatur 100OC dan tekanan 500 MPa sebesar 8.144g/cm3 dan
6.925%. Berdasarkan pengujian kekrasan nilai tertinggi
didapatkan pada temperatur 100OC dan tekanan 500 MPa
sebesar 76.30 HV. Hasil Kekuatan tekan terbesar tercatat pada
temperatur 100OC dan tekanan 500 MPa sebesar 315.714 MPa.
Berdasarkan hasil uji XRD didapatkan fasa yang terbentuk adalah
Cu, Sn, Cu3Sn, dan Cu6Sn5.
================================================================= Frangible bullet is a bullet that designed to be shattered when it
smash a hard target. Generally frangible bullet is made from cold
compaction method. But cold compaction has some steps makes
this method is time consuming. Warm compaction method unite
compaction method and sintering method in one time. Warm
compaction can reduce the production time. The processes in this
research are (1) Wet mixing the powders (Cu10%Sn + 0,6% Zinc
stearate) and adding an ethanol to reduce a potential to an
oxidation reaction. (2) compaction with temperature variation
100OC and 200OC and pressure variation 300, 400, 500, 600
MPa with 10 minutes holding time. As the results Tests, the
highest value of density, hardness, compression, and the lowest
value of porosity noted 8.144g/cm3, 76.30 HV, 315.714 MPa, and
6.925%. XRD test shows the formation of Cu, Cu6Sn5, Cu3Sn, and
Sn. SEM – EDX result shows the same phase in the Cu10wt%Sn +
0,6% Zinc stearate composite sample.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 671.374 Dew p-1 |
| Uncontrolled Keywords: | warm kompaksi, sifat mekanik, metalurgi serbuk |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 08 Jan 2020 03:43 |
| Last Modified: | 08 Jan 2020 03:43 |
| URI: | http://repository.its.ac.id/id/eprint/72593 |
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