Yusfi, Imron (2023) KARAKTERISASI MEKANIK DAN KETAHANAN KOROSI PRODUK BIOMATERIAL BERBASIS KOMPOSIT LIMBAH TULANG SAPI HASIL PROSES SELF-PROPAGATING INTERMEDIATE TEMPERATURE SYNTHESIS (SIS). S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
According to Badan Pusat Statistik Indonesia (Indonesian Central Bureau of Statistics) in 2021, 90% of the need for bone implants in Indonesia was supplied through imports. Based on the aforementioned data, it was necessary to develop locally produced materials and implants which have affordable price but still maintain their quality of products, and in accordance with the natural bone anatomy of humans in Indonesia. Hydroxyapatite and titanium were good bioactivity and mechanical properties, so both materials had been widely studied by researchers. In addition, aluminum as a reinforcement and magnesium as a wetting agent were used to strengthen the bonds between components. Hydroxyapatite material was obtained from the extraction of cow bones through the process of fat removal and sintering at a temperature of 750oC for 6 hours. The variations of aluminum used were aluminum without refining and aluminum through refining. The purification process was carried out by melting the cans and adding KCl and NaCl as binders for impurities. All components were mashed to sizes smaller than 200 mesh. After that, the sample was mixed with a certain ratio and compacted with a pressure of 171 MPa. The next process used the Self-Propagating Intermediate Temperature (SIS) method to utilize the principle of propagated exothermic heating throughout the sample for 2 hours at a temperature of 850oC. The mechanical properties of compressive strength, hardness and corrosion rate that occured were then studied. According to the result, the addition of titanium and the use of fluxing methods were able to increase compressive strength and hardness properties and reduced corrosion rates. The results showed that the best sample which met human cortical bone standards was the highest percentage of titanium, which was 20 wt.% using aluminum fluxing process. This sample produced compressive strength values and post-sintering hardness values in 34.88 MPa and 49.91 HV, also corrosion rate values on the sixth day was 0.1669 mm/yr.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Menurut Badan Pusat Statistik Indonesia pada tahun 2021, kebutuhan implan tulang di Indonesia 90% disuplai melalui impor. Berdasarkan data tersebut, maka perlu dikembangkan material dan implan produksi lokal yang ekonomis namun tetap menjaga kualitas dari produk, serta sesuai dengan anatomi tulang alami manusia di Indonesia. Hidroksiapatit dan titanium merupakan bioaktivitas dan sifat mekanik yang baik, sehingga kedua material banyak diteliti oleh para peneliti. Selain itu, aluminium sebagai penguat dan magnesium sebagai wetting agent digunakan untuk memperkuat ikatan antar komponen. Material hidroksiapatit diperoleh dari ekstraksi tulang sapi melalui proses penghilangan lemak dan sintering pada temperatur 750oC selama 6 jam. Variasi aluminium yang digunakan yaitu aluminium tanpa pemurnian dan aluminium melalui pemurnian. Proses pemurnian dilakukan dengan cara mencairkan kaleng dan ditambahkan KCl dan NaCl sebagai pengikat impurities. Semua komponen dihaluskan hingga berukuran lebih kecil dari 200 mesh. Setelah dihaluskan, sampel dicampurkan dengan perbandingan tertentu dan dikompaksi dengan tekanan 171 MPa. Proses selanjutnya menggunakan metode Self-Propagating Intermediate Temperature (SIS) untuk memanfaatkan prinsip pemanasan eksotermik terpropagasi disepanjang sampel selama 2 jam pada temperatur 850oC. Sifat mekanik kuat tekan, kekerasan dan laju korosi yang terjadi kemudian dipelajari. Berdasarkan data hasil penelitian, diketahui penambahan titanium dan penggunaan metode fluxing mampu meningkatkan sifat kuat tekan dan kekerasan dan menurunkan laju korosi. Hasil penelitian menunjukkan sampel terbaik yang memenuhi standar tulang kortikal manusia adalah persentase titanium tertinggi yaitu 20 wt.% yang menggunakan aluminium proses fluxing. Sampel ini menghasilkan nilai kuat tekan dan nilai kekerasan pasca sintering sebesar 34,88 MPa dan 49,91 HV serta nilai laju korosi pada hari ke-enam sebesar 0,1669 mm/yr. | |||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi |
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| Depositing User: | Mr Imron Yusfi | |||||||||
| Date Deposited: | 08 Sep 2023 09:37 | |||||||||
| Last Modified: | 08 Sep 2023 09:37 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/29335 |
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