Fabrication and optical characterization of high-density Al_2O_3 doped with slight MnO dopant

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概要

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• Effects of manganese oxide (MnO) addition on the densification of Al_2O_3 during sintering were studied. Although MnO is commonly used as a sintering aid for Al_2O_3, it has not been used as a sintering aid to produce transparent alumina. High-density Al_2O_3 doped with slight MnO (> 99.5%) was obtained using a conventional powder processing method, with sintering at 1250℃ for 24 h. The Al_2O_3- 0.05 mass%MnO exhibited optical total transmittance of 42% at 600 nm wavelength and three-point bending strength of 528 MPa. The transmittance was further improved to greater than 70% at 600 nm through hot isostatic pressing (HIP) after conventional sintering. The possibility of high-strength transparent alumina was demonstrated.

• 社団法人日本セラミックス協会の論文
• 2008-05-01

著者

• MOTOIKE KOICHI

  Department of Mechanical Engineering, Faculty of Engineering, Tottori University

• HAYAKAWA MOTOZO

  Department of Mechanical Engineering, Faculty of Engineering, Tottori University

• Motoike Koichi

  Department Of Mechanical Engineering Faculty Of Engineering Tottori University

• Motoike Koichi

  Department Of Mechanical Engineering Tottori University

• Hayakawa Motozo

  Department Of Mechanical And Aerospace Engineering Tottori University

• Nagashima Masaaki

  Innovation Center For Engineering Education Tottori University

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