Glass formation of rare earth aluminates by containerless processing
Saved in:
| Title: | Glass formation of rare earth aluminates by containerless processing |
|---|---|
| Authors: | Watanabe, Yasuhiro ywata@iis.u-tokyo.ac.jp, Masuno, Atsunobu, Inoue, Hiroyuki |
| Source: | Journal of Non-Crystalline Solids. Dec2012, Vol. 358 Issue 24, p3563-3566. 4p. |
| Subjects: | Rare earth metals, Containerless processing, Metallic glasses, Aerodynamics, Magnetic suspension, Phase equilibrium |
| Abstract: | Abstract: xR 2O3–(100− x)Al2O3 binary glasses (R =Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) were synthesized by containerless processing using an aerodynamic levitation furnace. Transparent glasses with a composition of x =30 and 32 were obtained for all Rs except Yb and Lu, which contained a small amount of crystalline phases. The glass transition temperature for x =32 glasses increased with a decrease in the ionic radius of R while the thermal stability of the glass and the molar volume decreased. From the results of the relation between the glass forming region and the phase equilibrium, it is proposed that solidification by containerless cooling proceeds as expected from the non-equilibrium phase diagram in the binary systems of small R (R =Y, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu). [Copyright &y& Elsevier] |
| Copyright of Journal of Non-Crystalline Solids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| Abstract: | Abstract: xR 2O3–(100− x)Al2O3 binary glasses (R =Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) were synthesized by containerless processing using an aerodynamic levitation furnace. Transparent glasses with a composition of x =30 and 32 were obtained for all Rs except Yb and Lu, which contained a small amount of crystalline phases. The glass transition temperature for x =32 glasses increased with a decrease in the ionic radius of R while the thermal stability of the glass and the molar volume decreased. From the results of the relation between the glass forming region and the phase equilibrium, it is proposed that solidification by containerless cooling proceeds as expected from the non-equilibrium phase diagram in the binary systems of small R (R =Y, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu). [Copyright &y& Elsevier] |
|---|---|
| ISSN: | 00223093 |
| DOI: | 10.1016/j.jnoncrysol.2012.02.001 |
