TY - GEN
T1 - Effect of arc plasma sintering process on formation of TiO2surface layer for Ti-6Al-4V applications
AU - Supriadi, S.
AU - Gatot, M. P.
AU - Roseno, F. A.
AU - Annur, D.
AU - Suharno, B.
AU - Dimyati, A.
N1 - Funding Information:
This work financially supported by Hibah Publikasi Internasional Terindeks untuk Tugas Akhir Mahasiswa UI 2019.
Publisher Copyright:
© 2020 Author(s).
PY - 2020/4/21
Y1 - 2020/4/21
N2 - Titanium has a high affinity with oxygen forming a protective layer TiO2. At elevated temperature, the TiO2 layer loses its protective properties. It causes oxygen to diffuse into bulk material and makes the material become brittle, hard and has poor machinability. This experiment aims to minimize the formation of TiO2 layer during the sintering process. The Ti-6Al-4V powder was compacted and then sintered using an arc plasma sintering (APS) with a current of 40 A, 50 A, and 60 A for 8 minutes to produce a sintered specimen protected from oxidation. As comparison, conventional sintering was carried out with an argon atmosphere with a temperature of 1100°C, 1200°C and 1300°C for 4 hours. Optical Microscope (OM), SEM-EDS, X-Ray Diffraction (XRD), density, and hardness tests were carried out to analyze the results of the sintered process. The TiO2 layer from the result of the arc plasma sintering process is thinner than the conventional sintering. Phases obtained from the arc plasma sintering and conventional sintering are α and β titanium. The relative density obtained using the arc plasma sintering process can reach up to 99%, higher than the conventional sintering result. Hardness values from arc plasma sintering process at 40 A, 50 A and 60 A are 297, 333, and 378 HV. Meanwhile, the hardness values from conventional sintering are 414, 427, and 469 HV, respectively.
AB - Titanium has a high affinity with oxygen forming a protective layer TiO2. At elevated temperature, the TiO2 layer loses its protective properties. It causes oxygen to diffuse into bulk material and makes the material become brittle, hard and has poor machinability. This experiment aims to minimize the formation of TiO2 layer during the sintering process. The Ti-6Al-4V powder was compacted and then sintered using an arc plasma sintering (APS) with a current of 40 A, 50 A, and 60 A for 8 minutes to produce a sintered specimen protected from oxidation. As comparison, conventional sintering was carried out with an argon atmosphere with a temperature of 1100°C, 1200°C and 1300°C for 4 hours. Optical Microscope (OM), SEM-EDS, X-Ray Diffraction (XRD), density, and hardness tests were carried out to analyze the results of the sintered process. The TiO2 layer from the result of the arc plasma sintering process is thinner than the conventional sintering. Phases obtained from the arc plasma sintering and conventional sintering are α and β titanium. The relative density obtained using the arc plasma sintering process can reach up to 99%, higher than the conventional sintering result. Hardness values from arc plasma sintering process at 40 A, 50 A and 60 A are 297, 333, and 378 HV. Meanwhile, the hardness values from conventional sintering are 414, 427, and 469 HV, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85113424822&partnerID=8YFLogxK
U2 - 10.1063/5.0001860
DO - 10.1063/5.0001860
M3 - Conference contribution
AN - SCOPUS:85113424822
T3 - AIP Conference Proceedings
BT - Proceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
A2 - Darsono, Nono
A2 - Thaha, Yudi Nugraha
A2 - Ridhova, Aga
A2 - Rhamdani, Ahmad
A2 - Utomo, Muhammad Satrio
A2 - Ridlo, Faried Miftahur
A2 - Prasetyo, Mukhlis Agung
PB - American Institute of Physics Inc.
T2 - 3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
Y2 - 23 October 2019 through 24 October 2019
ER -