# Applicability of Infrared Thermography for the Detection of Phase Transitions in Metal Alloys
## 4 Conclusions  
The IRT method has been applied for the phase transition detection of metals for the first time. For both the pure sample of Gallium and the Gallium-Indium mixture, all transitions documented in literature have been retrieved with the method within an acceptable temperature range for a preliminary approach. The IRT method has so far been able to characterize phase transitions of up to a hundred of organic samples at a time, achieving in a few hours what standard methods can do in weeks. Given the present results, it appears evident that the method could eventually be able to reach similar levels of performance for phase transition characterization in metallurgy.  
Although the occurrence of a variation could not be identified with certainty, it is no doubt that with some improvements, the accuracy and reliability could be enhanced. Further works will consist in designing and equipping the current device with a controlled atmosphere cell, making it possible to work either under vacuum or with inert atmospheres at a controlled pressure which will help preventing the potential appearance of parasitic transitions. The objective also being to establish the limits of application of the proposed method, a few well-known systems will be studied, increasing gradually the complexity of the phase diagram (starting with binary systems and increasing the number of compounds afterwards). These first results for metallic alloys being encouraging, the applicability of IRT method will then be assessed using several not yet tested systems (e.g., polymers, metals, salts, organic-inorganic hybrids).  
Figure 3: Third and fourth time\(-\)eigenfunctions (blue) and DSC curve for: (a) the sample of pure Gallium; (b) the Gallium\(-\)Indium mixture.  
**Author Contributions:** Conceptualization, M.D., A.G., and C.M.; Methodology, C.M., M.D., and A.G.; Software, C.M.; Validation, C.M.; Formal analysis, C.M., M.D., A.G., and A.V.; Investigation, C.M., M.D., A.G., and A.V.; Resources, M.D. and A.G.; Data curation, C.M.; Writing--original draft preparation, C.M.; Writing--review and editing, C.M., M.D., A.G., and A.V.; Visualization, C.M., M.D., A.G., and A.V.; Supervision, M.D.; Project administration, M.D.; Funding acquisition, M.D. All authors have read and agreed to the published version of the manuscript.  
This work is carried out in the frame of SUDOKET project (SOE2/P1/E0677) and is co-funded by the Interreg Sudoe Programme through the European Regional Development Fund (ERDF). The authors acknowledge them as well as the financial support of Region Nouvelle Aquitaine for subsidizing BioMCP project (Project-2017-1R10209-13023). We also would like to thank CNRS for promoting the I2M Bordeaux-CICenergiGUNE exchanges in the framework of the IEA PHASE-IR project.  
Not applicable.  
**Data Availability Statement:** The data presented in this study are available on request from the corresponding author.  
The authors would also like to thank [PERSON] for the administrative and financial support in the frame of the SUDOKET project.  
The authors declare no conflict of interest.