Phase equilibria of the Dy–Nb–Si ternary system at 1 273 K
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Chengxia Wei
Abstract
The solid state phase equilibria in the Dy–Nb–Si ternary system at 1 273 K were experimentally determined by means of X-ray powder diffraction, differential scanning calorimetry and scanning electron microscopy equipped with energy dispersive X-ray analysis in the whole compositional range. The isothermal section of the Dy–Nb–Si ternary phase diagram contains 12 single-phase regions, 22 two-phase regions and 11 three-phase regions. At 1 273 K, the highest solubilities of Nb in β-DySi2, β-DySi1.67, Dy3Si4, β-DySi, Dy5Si4 and Dy5Si3 are extremely low (all less than 1 at.%). Whereas the maximum solubilities of Dy in NbSi2 and Nb5Si3 are approximately confirmed to be 1.12 at.% and 1.33 at.% Dy, respectively. Combining differential scanning calorimetry results with X-ray powder diffraction analysis, it is proved that the transformation temperatures of β-DySi1.67→α-DySi1.67 and Dy3Si4→β-DySi1.67 + β-DySi are 980 K and 1 480 K, respectively.
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Articles in the same Issue
- Contents
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- “VII International Congress of Biomaterials, BIOMAT' 2018” (14–16 March 2018, Havana, Cuba): from medical devices to regenerative medicine
- Original Contributions
- Microstructural evolution and strain hardening behavior of AISI 316L type austenitic stainless steel
- The microstructure and three-point bending behavior of Ni–Co/WC composite cladding coating
- Effects of TiN coating on the high-cycle-fatigue and very-high-cycle-fatigue properties of Ti-6Al-4V alloy
- Phase equilibria of the Dy–Nb–Si ternary system at 1 273 K
- Synthesis of SnO/SnO2 microsphere photocatalysts by ultrasonic reaction
- Exploring the use of silica sands and calcite from natural deposits to prepare bioactive glasses
- Bioactivity and mechanical properties of scaffolds based on calcium aluminate and bioactive glass
- Effect of heat treatment on apatite coatings deposited on pre-calcified titanium substrates
- Calcium silicate-poly(n-butyl-2-cyanoacrylate) nanocomposite for bone tissue adhesion
- Synthesis and evaluation of a collagen–brushite cement as a drug delivery system
- Short Communications
- Biomedical porous Ti-16Nb-10Zr-(0–15)Ta alloys
- Influence of Zr addition on the corrosion behavior of biomedical PIM Ti-16Nb alloy in SBF
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Editorial
- “VII International Congress of Biomaterials, BIOMAT' 2018” (14–16 March 2018, Havana, Cuba): from medical devices to regenerative medicine
- Original Contributions
- Microstructural evolution and strain hardening behavior of AISI 316L type austenitic stainless steel
- The microstructure and three-point bending behavior of Ni–Co/WC composite cladding coating
- Effects of TiN coating on the high-cycle-fatigue and very-high-cycle-fatigue properties of Ti-6Al-4V alloy
- Phase equilibria of the Dy–Nb–Si ternary system at 1 273 K
- Synthesis of SnO/SnO2 microsphere photocatalysts by ultrasonic reaction
- Exploring the use of silica sands and calcite from natural deposits to prepare bioactive glasses
- Bioactivity and mechanical properties of scaffolds based on calcium aluminate and bioactive glass
- Effect of heat treatment on apatite coatings deposited on pre-calcified titanium substrates
- Calcium silicate-poly(n-butyl-2-cyanoacrylate) nanocomposite for bone tissue adhesion
- Synthesis and evaluation of a collagen–brushite cement as a drug delivery system
- Short Communications
- Biomedical porous Ti-16Nb-10Zr-(0–15)Ta alloys
- Influence of Zr addition on the corrosion behavior of biomedical PIM Ti-16Nb alloy in SBF
- DGM News
- DGM News
