ANDRIANI, DINI (2026) PENGARUH KOMPOSISI Cu DAN TEMPERATUR SINTERING TERHADAP STRUKTUR MIKRO, SIFAT MEKANIK, DAN KOROSI PADUAN LOW-COST Ti-25Nb-5Fe-xCu UNTUK IMPLAN DENTAL. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Indonesia has entered the phase of an aging population since 2021, resulting in an increased demand for dental implant materials that are safe and compatible with the mechanical properties of human dental bone tissue. The moist and nutrient-rich oral cavity is a major trigger for bacterial growth, such as Streptococcus mutans, which often causes caries, gingivitis, and peri-implamantitis. Commercial Ti-6Al-4V alloys have a high elastic modulus (100 – 110 GPa) compared to human teeth (12 – 20 GPa), which can cause stress shielding in implants. The also contain Al and V, which cause toxicity effects in long-term dental implant use. Based on these issues, research was conducted to develop a Ti-25Nb-5Fe-xCu (x = 0, 2, 3, 4) alloy using the powder metallurgy method with varying sintering temperatures (1200°C, 1250°C, 1300°C). The samples were prepared by grinding using #80 - #3000 grit sandpaper, polishing using a colloidal silica solution, and etching using a kroll’s reagent solution. The sample analysis process was carried out using SEM-EDS, XRD, density, Vickers hardness, elastic modulus, yield strength, and optical microscopy. Based on the characterization results, it was found that increasing the Cu composition and sintering temperature could strengthen the stabilization of the β-Ti phase. The microstructure of the alloy became more homogeneous, porosity decreased, and grain size increased at high sintering temperatures due to the optimal diffusion process. The addition of Cu can increase corrosion resistance and show good antibacterial activity for dental implant applications. Based on the overall results, the Ti-25Nb-5Fe-4Cu alloy with a sintering temperature of 1300°C is an alloy that produces a dominant β-Ti phase, high relative density, and has significant corrosion resistance and antibacterial properties for use as dental implants.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Indonesia telah memasuki fasa ageing population sejak tahun 2021, sehingga kebutuhan terhadap material implan gigi yang aman dan sesuai dengan sifat mekanik jaringan tulang gigi manusia semakin meningkat. Kondisi rongga mulut yang lembab dan kaya nutrisi menjadi pemicu utama pertumbuhan bakteri, seperti streptococcus mutans yang seringkali menyebabkan caries, radang gusi, dan peri-implamantitis. Paduan komersial Ti-6Al-4V memiliki modulus elastisitas yang tinggi (100 – 110 GPa) jika dibandingkan dengan gigi manusia (12 – 20 GPa) dapat menyebabkan stress shielding pada implan dan terdapat kandungan Al serta V yang menyebabkan efek toksisitas dalam penggunaan implan gigi secara jangka panjang. Berdasarkan permasalahan tersebut, dilakukan penelitian dengan mengembangkan paduan Ti-25Nb-5Fe-xCu (x = 0, 2, 3, 4 ) menggunakan metode powder metallurgy dengan variasi temperatur sintering (1200°C, 1250°C, 1300°C). Sampel dipreparasi menggunakan grinding menggunakan kertas ampelas berukuran grit #80 - #3000, polishing menggunakan larutan colloidal silica, dan etsa menggunakan larutan kroll’s reagent. Proses analisis sampel dilakukan dengan menggunakan SEM-EDS, XRD, densitas, kekerasan vicker’s, modulus elastisitas, yield strength, dan mikroskop optik. Berdasarkan hasil karakterisasi menunjukkan dengan peningkatan komposisi Cu dan temperatur sintering dapat memperkuat penstabilan fasa β-Ti. Struktur mikro paduan menjadi lebih homogen, porositas menurun, dan ukuran butir meningkat pada temperatur sintering yang tinggi disebabkan oleh proses difusi yang optimal. Penambahan Cu dapat meningkatkan ketahanan korosi dan menunjukkan aktivitas antibakteri yang baik untuk aplikasi implan dental. Berdasarkan hasil keseluruhan, paduan Ti-25Nb-5Fe-4Cu dengan temperatur sintering 1300°C menjadi paduan yang menghasilkan fasa β-Ti dominan, densitas relatif yang tinggi, dan memiliki ketahanan korosi serta sifat antibakteri yang signifikan untuk dijadikan implan dental. | |||||||||
| Subjects: | T Technology > TN Mining engineering. Metallurgy | |||||||||
| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi |
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| Depositing User: | Dini Andriani | |||||||||
| Date Deposited: | 24 Feb 2026 01:15 | |||||||||
| Last Modified: | 24 Feb 2026 01:15 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/58715 |
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