Pangaribuan, Paulindra M. (2016) Pengaruh Penambahan Nikel (Ni) Terhadap Sifat Elektrik Dan Kekerasan Paduan Tembaga-Nikel Untuk Aplikasi Termokopel. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Tembaga adalah logam transisi dan merupakan salah
satu logam komersial yang digunakan di industri. Tembaga
memiliki sifat elektriktrik tertinggi nomor dua setelah perak.
Perpaduan tembaga-nikel sering digunakan sebagai instrumen
kelistrikan. Penambahan nikel pada tembaga bertujuan untuk
meningkatkan kekuatan, daya tahan, sifat termoelektriknya.
Pemaduan dilakukan dengan proses peleburan. Raw material
dileburkan dengan menggunakan Burner Furnace pada
temperatur 1800oC selamat 45-60 menit. Pada penelitian ini
dilakukan variasi kadar Nikel pada kadar 20;25;30;35;40 %wt
untuk mengetahui pengaruhnya terhadap sifat elektrik dan
kekerasan paduan. Pengujian yang dilakukan adalah uji
komposisi kimia menggunakan OES, Uji fasa menggunakan XRD,
Uji Struktur Mikro, Uji Kekerasan dengan menggunakan metode
Brinell, dan Uji Konduktivitas Listrik menggunakan metode Four
Point Probe. Nilai konduktifitas listrik paduan naik seiring
bertambahnya nikel sampai kadar 35%wt Ni, dan turun pada
kadar 40%wt Ni. Hal ini dipengaruhi oleh ukuran butir pada
paduan. Kekerasan pada paduan Cu-Ni juga meningkat seiring
bertambahnya kadar nikel, hal ini karena sifat Cu-Ni yang larut
sepenuhnya menjadi solid solution dan meningkatkan sifat
mekaniknya
========================================================================== Copper is one of transition metal and is one of the most
commercial metal used in industry. Copper has the second best
electrical properties after silver. The alloys of copper-nickel often
used as electrical instrument. The purpose of adding of nickel on
copper are to increase the strength, endurance, and the
thermoelectrical properties. The alloying was done by melting
process. The raw materials were melted by Burner Furnace at
1800 oC for 45-60 minutes. There were some variations in nickel
content for the alloy, i.e 20;25;30;35;40 %wt of nickel to find out
it’s effect on the electrical properties and hardness. The
characterization was done by using OES for chemical
composition, XRD for phase characterization, microstructure test,
Four Point Probe method for electrical conductivity, and Brinell
method for hardness test. The electrical conductivity tends to
increase over the addition of nickel up to 35%wt of nickel and
decrease at 40%wt of nickel. This was due to the grain size and
the alloying element. The hardness tends to increase over the
addition of nickel because the properties of copper and nickel
which dissolve completely forming solid solution and increase the
mechanical properties
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.186 Pan p |
| Uncontrolled Keywords: | Paduan Cu-Ni, Sifat elektrik, Kekerasan |
| 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: | 20 Jan 2020 07:54 |
| Last Modified: | 20 Jan 2020 07:54 |
| URI: | http://repository.its.ac.id/id/eprint/72780 |
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