Biomaterial mampu luruh berbasis Fe-Mn-C di produksi melalui proses metalurgi sebuk ferromangan, besi dan karbon
Rhidiyan Waroko;
Sri Harjanto, supervisor; Bambang Suharno, examiner; Andi Rustandi, examiner
(Fakultas Teknik Universitas Indonesia, 2012)
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[ABSTRAK Material Fe-Mn-C telah banyak dikembangkan sebagai material mampu luruh untuk aplikasi penyangga pembuluh dalam satu dekade belakangan ini. Penggunaan biomaterialFe-Mn-C mampu menghindari tindakan pembedahan kembali setelah pembuluh jantungkembali normal setelah mengalami penyempitan, yaitu sekitar 6-12 bulan. Pengujian material Fe-Mn-C dilakukan untuk mencari kelayakan kandidat biomaterial ini digunakansebagai penyangga pembuluh yang mampu luruh. Komposisi Mn digunakan sebagaivariabel pengujian, yaitu Fe-25Mn-0.8C dan Fe-35Mn-0.8C. Material tersebut dibuatdengan cara pemaduan mekanik kemudian metalurgi serbuk. Karakterisasi serbuk hasilpemaduan mekanik menunjukkan terjadinya reduksi ukuran partikel dan membentukpaduan serbuk yang lebih merata. Hasil pengujian kekerasan dengan Rockwell A menunjukkan bahwa kekerasan material Fe-24Mn-0.42C adalah 43 HRA dan Fe-33Mn-0.27C adalah 49 HRA, nilai kekerasan tersebut memiliki nilai kekerasan yang lebih tinggidari material SS 316L. Hasil pengujian polarisasi menunjukkan laju korosi untuk Fe-24Mn-0.42C adalah 0.84 mmpy dan Fe-35Mn-0.8C 0.34 mmpy. Nilai tersebut lebihtinggi dari besi murni tetapi lebih rendah dari paduan magnesium. Hasil uji mikrostrukturdengan uji metalografi dan uji XRD menunjukkan fasa austenit. Berdasarkan pengujianini, menunjukkan bahwa pengaruh komposisi Mn untuk meningkatkan kekerasanmaterial. Pada pengujian ini juga menunjukkan proses pemaduan mekanik mampumeningkatkan kekerasan material dan menurunkan laju korosi material.ABSTRAK Fe-Mn-C materials has been developed as biodegredable material for coronary stentapplication in recent decades. The use of Fe-Mn-C biomaterials is able to avoid surgeryafter heart vessels returned to normal condition after a constriction, which is about 6-12months. Material testing of Fe-Mn-C alloy is performed to proving of feasibility thatbiomaterials candidate for biodegredable coronary stent. Mn composition is used for thetest variable, namely Fe-25Mn-0.8C and Fe-35Mn-0.8C. That material is fromproduction of mechanical alloying and then powder metallurgy. Powder as-mechanicalalloying characterization shows particle reduction size and make a alloy powder is moreevenly. Result of hardness test with Rockwell A showed the hardness of Fe-24Mn-0.42Cis 43 HRA and hardness of Fe-33Mn-0.27C is 49 HRA. That hardness value is biggerthan hardness value of SS 316 L material. The result of polarization test shows corrosionrate of Fe-24Mn-0.42C is 0.84 mmpy and 0.34 mmpy for Fe-33Mn-0.27C. That corrosionrate is higher than pure iron and lower than magnesium alloy. Microstructure test withmetallographic test and XRD test shows austenitic phase. Based on this research showsthat effect of Mn composition is for increasing hardness value. On this research is showsthat mechanical alloying can increasing hardness of material and decreasing corrosionrate., Fe-Mn-C materials has been developed as biodegredable material for coronary stentapplication in recent decades. The use of Fe-Mn-C biomaterials is able to avoid surgeryafter heart vessels returned to normal condition after a constriction, which is about 6-12months. Material testing of Fe-Mn-C alloy is performed to proving of feasibility thatbiomaterials candidate for biodegredable coronary stent. Mn composition is used for thetest variable, namely Fe-25Mn-0.8C and Fe-35Mn-0.8C. That material is fromproduction of mechanical alloying and then powder metallurgy. Powder as-mechanicalalloying characterization shows particle reduction size and make a alloy powder is moreevenly. Result of hardness test with Rockwell A showed the hardness of Fe-24Mn-0.42Cis 43 HRA and hardness of Fe-33Mn-0.27C is 49 HRA. That hardness value is biggerthan hardness value of SS 316 L material. The result of polarization test shows corrosionrate of Fe-24Mn-0.42C is 0.84 mmpy and 0.34 mmpy for Fe-33Mn-0.27C. That corrosionrate is higher than pure iron and lower than magnesium alloy. Microstructure test withmetallographic test and XRD test shows austenitic phase. Based on this research showsthat effect of Mn composition is for increasing hardness value. On this research is showsthat mechanical alloying can increasing hardness of material and decreasing corrosionrate.] |
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No. Panggil : | S53410 |
Entri utama-Nama orang : | |
Entri tambahan-Nama orang : | |
Entri tambahan-Nama badan : | |
Penerbitan : | [Place of publication not identified]: Fakultas Teknik Universitas Indonesia, 2012 |
Program Studi : |
Bahasa : | ind |
Sumber Pengatalogan : | LibUI ind rda |
Tipe Konten : | text |
Tipe Media : | computer |
Tipe Carrier : | online resource |
Deskripsi Fisik : | xiv, 81 pages : ilustration ; 28 cm + appendix |
Naskah Ringkas : | |
Lembaga Pemilik : | Universitas Indonesia |
Lokasi : | Perpustakaan UI, Lantai 3 |
No. Panggil | No. Barkod | Ketersediaan |
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S53410 | TERSEDIA |
Ulasan: |
Tidak ada ulasan pada koleksi ini: 20372805 |