Muzayadah, Nurul Lailatul (2017) Pengaruh Penambahan Al2O3 Terhadap Sifat Listrik Dan Termal Material Zn(1-X)AlxO Dengan Metode Mechanical Milling Sebagai Kandidat Material Termoelektrik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Termoelektrik merupakan material yang dapat mengonversikan panas yang terbuang menjadi listrik. Material termoelektrik yang baik memiliki nilai figure of merit zT ≥1 pada temperatur 300 K. Material ZnO merupakan semikonduktor berbasis oksida, dimana memiliki sifat termoelektrik yang stabil dalam temperatur tinggi. Pada penelitian ini dilakukan proses sintesis material Zn(1-X)AlxO dengan penambahan Al2O3 yakni sebesar 1 ; 2 ; 3 ; 4 atomic %. Metode yang digunakan adalah mechanical milling, dengan variasi waktu sebesar 2, 4 Jam. Pengujian yang dilakukan dari material hasil sintesis diantaranya X-ray Diffractometer, Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDX), Differential Scanning Calorimetry-Thermogravimetric Analysis (DSC-TGA), dan LCR meter. Hasil penelitian menunjukkan bahwa nilai konduktivitas listrik secara umum meningkat dengan penambahan jumlah doping dan mencapai hasil maksimum pada nilai doping sebesar 3 at %. Sementara, ketahanan termal dari material secara umum stabil dengan peningkatan temperatur hingga 900o C. Material hasil sintesis dapat dijadikan sebagai kandidat material termoelektrik untuk aplikasi pada temperatur tinggi.
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Thermoelectric is a material that able to co
nvert the waste heat
into electricity. A good thermoelectric material generally has the
value of figure of merit zT
≥1 at temperature 300K. ZnO
material is an oxide
-
based semiconductor, which has stable
thermoelectric properties at high temperature. In t
his research,
the Zn
(1
-
X)
Al
x
O
material was synthesized with the addition of
Al
2
O
3
as much as 1; 2; 3; 4 atomic percent. The
method used
mechanical
milling
, with time variation of 2,4 hours. Tests
performed from synthetic materials include X
-
ray
Diffractometer,
Scanning Electron Microscopy
-
Energy Dispersive X
-
Ray
Spectroscopy (SEM
-
EDX), Differential Scanning Calorimetry
-
Thermogravimetric Analysis (DSC
-
TGA), and LCR meter. The
results showed that the electrical conductivity values
generally
incre
ased with the addition of doped and ac
hieved maximum results at doped
values of 3%. Meanwhile, the
termal resistance of the material is generally stable with the increasing of
temperature up to 900oC. The synthesized material can be applied as the candidate of thermoelectric material for high temperatures.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Termoelektrik, ZnO, Al2O3, Mechanical Milling, doping, Waktu Milling, Thermoelectric, Doped, Time Milling. |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics > QC271 Temperature measurements |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering |
| Depositing User: | NURUL LAILATUL MUZAYADAH |
| Date Deposited: | 27 Sep 2017 04:33 |
| Last Modified: | 06 Mar 2019 03:34 |
| URI: | http://repository.its.ac.id/id/eprint/43884 |
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