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Table of contents
Abbreviation List
Introduction
References
Chapter I: Bibliography
I-1- Nanomaterials & high pressure
I-1-1- Nanostructured high-pressure phases
I-1-1-a- Nanostructured diamond
I-1-1-b- Other nanostructured superhard materials: B-C-N system
I-1-2- Nanostructured materials under high-pressure
I-1-2-a- Oxides and related materials
I-1-2-b- Other materials
I-2- Boron: elemental forms and properties of the fifth element
I-2-1- Allotropes of boron
I-2-2- Stability of boron phases and phase diagram
I-3- Boron-metal alloys: structure, properties and synthesis
I-3-1- Properties and structures
I-3-2- Synthesis and nanostructures
I-4- Conclusion
I-5- References
Chapter II: Synthesis of nanostructured precursors in molten salts
II-1- Experimental set-up
II-2- Molten salts colloidal synthesis
II-2-1- Hafnium diboride
II-2-1-a- Synthesis in LiCl/KCl
II-2-1-b- Synthesis in LiI/KI
II-2-2- Calcium hexaboride
II-2-2-a- Synthesis in LiCl/KCl
II-2-2-b- Synthesis in LiI/KI
II-2-3- Nanostructured amorphous boron: nano Bam
II-3- Conclusions
II-4- References
Chapter III: HPHT treatments on oxygen-containing nanocomposites
III-1- Introduction
III-2- Experimental
III-3- Results and discussion
III-3-1- Synthesis of metal borides-boron nanoparticles in molten salts
III-3-2- High Pressure-High Temperature (HPHT) treatments
III-4- Conclusions
III-5- Associated content
III-6- References
Chapter IV: HPHT formation of non-oxidised nanocomposites
IV-1- Experimental set-ups
IV-2- Calcium hexaboride
IV-2-1- In situ XRD in Paris-Edinburgh cell
IV-2-1-a- Experiment at ID27/ESRF
IV-2-1-b- Experiment at PSICHE/SOLEIL Synchrotron
IV-2-2- Ex situ experiments
IV-2-2-a- Heating at 1350 °C
IV-2-2-b- Heating at 1550 °C
IV-2-2-c- Heating at 1750 °C
IV-3- Hafnium diboride
IV-3-1- In situ XRD in Paris-Edinburgh cell
IV-3-2- Ex situ experiments
IV-4- Conclusions & Prospects
IV-5- References
Chapter V: HPHT treatments of nanostructured amorphous boron
V-1- In situ XRD in Paris-Edinburgh cell
V-2- Ex situ experiments
V-2-1- 5 GPa experiments
V-2-2- 14 GPa experiments
V-3- Conclusion and prospects
V-4- References
Conclusion
Appendices
1- Synthesis in molten salts
2- HPHT experiments
3- Characterisation techniques
