Abstract
The technique of vapor-solid diffusion couples was systematically studied for its potential in phase diagram investigation using the well-established Ni-Zn system which is highly suitable for this purpose due to the high vapor pressure difference of the two constituents. More than 50 samples synthesized by direct vapor-solid reaction, varying the parameters temperature, time and overall system composition, were investigated by SEM/EDX focusing on diffusion profile line-scans. Supporting powder-XRD and DTA experiments were performed as well. Based on these experimental results, significant changes to the currently accepted Ni-Zn phase diagram, specifically concerning the β, β1, and γ phase fields, are proposed. Furthermore, a relatively simple experimental procedure to prepare vapor-solid diffusion experiments is introduced and its application in phase diagram investigation is discussed in detail.
Original language | English |
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Article number | 100116 |
Journal | Journal of Alloys and Metallurgical Systems |
Volume | 8 |
DOIs | |
Publication status | Published - Dec 2024 |
Austrian Fields of Science 2012
- 104017 Physical chemistry
- 204001 Inorganic chemical technology
- 205019 Material sciences
Keywords
- Diffusion couple
- Nickel alloys
- Phase diagram
- Vapor-solid reaction