Analisis Pengaruh Variasi Tegangan Dan Penambahan Mos2 Terhadap Karakteristik Lapisan Oksida Pada Substrat TI6AL4V Dengan Metode Plasma Electrolytic Oxidation (PEO)

Simatupang, Harry Gideon (2026) Analisis Pengaruh Variasi Tegangan Dan Penambahan Mos2 Terhadap Karakteristik Lapisan Oksida Pada Substrat TI6AL4V Dengan Metode Plasma Electrolytic Oxidation (PEO). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Paduan Ti-6Al-4V merupakan biomaterial yang banyak digunakan sebagai implan tulang karena memiliki sifat mekanik yang baik dan ketahanan korosi tinggi. Namun, sifat bioinert pada permukaannya menyebabkan kemampuan osseointegrasi masih terbatas sehingga diperlukan modifikasi permukaan untuk meningkatkan bioaktivitas dan biokompatibilitas. Penelitian ini bertujuan menganalisis pengaruh variasi tegangan Plasma Electrolytic Oxidation (PEO) dan penambahan molybdenum disulfide (MoS₂) terhadap karakteristik lapisan oksida pada substrat Ti-6Al-4V. Proses PEO dilakukan selama 15 menit menggunakan elektrolit yang mengandung KOH, Na₂SiO₃, kalsium gliserofosfat, kalsium karbonat, serta variasi tegangan 250, 300, dan 350 V dengan penambahan MoS₂ sebesar 1, 3, dan 5 g. Karakterisasi dilakukan menggunakan X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX), pengujian pull-off adhesion, dan MTT assay. Hasil penelitian menunjukkan terbentuknya fase TiO₂, kalsium fosfat (CaP), dan MoS₂ pada lapisan oksida. Peningkatan tegangan meningkatkan porositas dari 19,53% menjadi 43,95% dan ketebalan lapisan dari 1,751 µm menjadi 3,696 µm. Penambahan 3 g/L MoS₂ menghasilkan distribusi pori yang lebih homogen, sedangkan pada 5 g/L terjadi indikasi aglomerasi partikel. Nilai adhesi tertinggi sebesar 4,8 MPa diperoleh pada kondisi 300 V dan 3 g/L MoS₂, sedangkan hasil MTT assay menunjukkan seluruh variasi memiliki viabilitas sel di atas 70% sehingga memenuhi kriteria tidak sitotoksik. Dengan demikian, kombinasi tegangan 300 V dan penambahan 3 g/L MoS₂ merupakan kondisi optimum karena menghasilkan lapisan oksida yang homogen, memiliki adhesi terbaik, serta menunjukkan biokompatibilitas yang baik.
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implant due to its good mechanical properties and high corrosion resistance. However, the bioinert nature of its surface limits its osseointegration potential, necessitating surface modification to enhance bioactivity and biocompatibility. This study aims to analyze the effect of varying Plasma Electrolytic Oxidation (PEO) voltages and the addition of molybdenum disulfide (MoS₂) on the characteristics of the oxide layer on a Ti-6Al-4V substrate. The PEO process was conducted for 15 minutes using an electrolyte containing KOH, Na₂SiO₃, calcium glycerophosphate, and calcium carbonate, with voltage variations of 250, 300, and 350 V and MoS₂ additions of 1, 3, and 5 g. Characterization was performed using X-ray diffraction (XRD), scanning electron microscopy–energy dispersive X-ray (SEM-EDX), pull-off adhesion testing, and the MTT assay. The results showed the formation of TiO₂, calcium phosphate (CaP), and MoS₂ phases in the oxide layer. Increasing the voltage raised the porosity from 19.53% to 43.95% and the layer thickness from 1.751 µm to 3.696 µm. The addition of 3 g/L MoS₂ resulted in a more homogeneous pore distribution, whereas at 5 g/L, there were indications of particle agglomeration. The highest adhesion value of 4.8 MPa was obtained at 300 V and 3 g/L MoS₂, while the MTT assay results showed that all variations had cell viability above 70%, thus meeting the criteria for non-cytotoxicity. Thus, the combination of 300 V and 3 g/L MoS₂ is the optimal condition because it produces a homogeneous oxide layer, exhibits the best adhesion, and demonstrates good biocompatibility.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adhesi, Bioaktivitas, Molybdenum, PEO, Adhesion, Bioactivity, Molybdenum, Titanium
Subjects:	R Medicine > RD Surgery > RD132 Implants, Artificial. R Medicine > RD Surgery > RD755.5.C35 Orthopedic implants.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Harry Gideon Simatupang
Date Deposited:	24 Jul 2026 01:14
Last Modified:	24 Jul 2026 01:14
URI:	http://repository.its.ac.id/id/eprint/136650

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