ANALISIS STRUKTUR KRISTAL LAPISAN KOMPOSIT ELEKTRODEPOSISI Ni/Si3N4

DIAH KARTIKA RAHMAN, . (2021) ANALISIS STRUKTUR KRISTAL LAPISAN KOMPOSIT ELEKTRODEPOSISI Ni/Si3N4. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Telah dilakukan analisis pengaruh variasi Si3N4 terhadap lapisan komposit Si3N4, variasi yang digunakan yaitu 10 gr/L, 20 gr/L, dan 30 gr/L. Proses elektrodeposisi dengan menggunakan kuat arus sebesar 2 mA dan waktu pelapisan selama 15 menit. Sampel dianalisis dengan X-Ray Diffraction (XRD) untuk mengetahui struktur kristal dan ukuran kristal. Data yang didapatkan kemudian digunakan untuk menghitung nilai densitas dislokasi, regangan kisi, tegangan sisa, dan hubungan antara tegangan sisa dan nilai kekerasan yang telah didapatkan dari hasil pengujian Vickers. Hasil menunjukkan bahwa nilai tegangan sisa tertinggi didapat pada lapisan komposit Ni/Si3N4 dengan kosentrasi Si3N4 10 gr/L yaitu sebesar 1.8085 GPa, namun nilai kekerasan (HV) tertinggi terjadi pada lapisan komposit Ni/Si3N4 dengan variasi 30 gr/L yaitu sebesar 1836.3 Kg/mm2. We analyzed the effect of variations of Si3N4 on the composite layer Si3N4, the variation used is 10 g/L, 20 g/L, and 30 g/L. The electrodeposition process uses a current of 2 mA and a coating time of 15 minutes. Samples were analyzed by XRay Diffraction (XRD) to determine the crystal structure and crystal size. The data obtained are then used to calculate the value of dislocation density, lattice strain, residual stress, and the relationship between residual stress and hardness values that have been obtained from the Vickers test results. The results show that the highest residual stress value is obtained in the Ni/Si3N4 composite layer with a concentration of Si3N4 10 gr/L which is 1.8085 GPa, but the highest hardness value (HV) occurs in the Ni/Si3N4 composite layer with the variation of 30 gr/L is 1836.3 Kg/mm2.

Item Type:	Thesis (Sarjana)
Additional Information:	1)Dr. Esmar Budi, M.T. 2)Dr. Hadi Nasbey, M.Si.
Subjects:	Sains > Fisika
Divisions:	FMIPA > S1 Fisika
Depositing User:	Users 14629 not found.
Date Deposited:	13 Jul 2022 06:07
Last Modified:	13 Jul 2022 06:07
URI:	http://repository.unj.ac.id/id/eprint/31739

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