1. LIGO- G020000-00-P BARBARA SIMONI UNDERGRADUATE STUDENT UNIVERSITY OF PISA ITALY LIGO-G020439-00-R Phase transition heat in MoRuB

2. LIGO- G020000-00-P Introduction Production of glassy metal »Fusion of alloy »Rapid quenching Phase transition heat as a function of percentage of Boron in MoRuB »Transition Temperature »Differential Thermal Analyzer (DTA)

3. LIGO- G020000-00-P PRODUCTION (Mo 0.6 Ru 0.4 ) 1-x B x Glassicity range from x=14 to x=24 AmorphousCrystalline Temperature ΔT Exothermic

4. LIGO- G020000-00-P FUSING THE ALLOY Copper mould Mini-Arc Melter

5. LIGO- G020000-00-P RAPID COOLING AMORPHOUS STAGE Rapid quenching of MoRuB »Employed cooling rates up to 10/6 K/sec Crystallization time - Hours for Fused Silica - Seconds for Glassy Metals

6. LIGO- G020000-00-P Ultra- rapid Quenching coil pistons Laser beam

7. LIGO- G020000-00-P sample coil

8. LIGO- G020000-00-P

9. pistons

10. LIGO- G020000-00-P

11. When a liquid is cooled one of two events may occur: a. Crystallization at the melting point (Tm) OR b. Increasingly viscous ‘Supercooled’ liquid at temperature below Tm turns to glass The Glass Transition Temperature

12. LIGO- G020000-00-P Volume Temperature

13. LIGO- G020000-00-P Differential Thermal Analyzer (DTA)

14. LIGO- G020000-00-P DTA SAMPLE AREA

15. LIGO- G020000-00-P Differential Thermal Analyzer

16. LIGO- G020000-00-P CALIBRATION Three types of calibration:. Temperature. Heat Flow. Furnace

17. LIGO- G020000-00-P ALLUMINUM CALIBRATION Standard: Tm = 660.1 CHeat of fusion = 400.1 J/g

18. LIGO- G020000-00-P GOLD CALIBRATION Standard: Tm = 1063 CHeat of fusion = 63.7 J/g

19. LIGO- G020000-00-P BASELINE Furnace temperature Sample temperature Program temperature

20. LIGO- G020000-00-P MEASUREMENT

21. LIGO- G020000-00-P Conclusions Confirmed the amorphous state »By X-ray Diffraction (Brian) Confirmed composition »Through thermal analysis on DTA Measured strength values (within 10%) »Vicker Hardness test (Maddalena) Continuation of Work »Will characterize full amorphous range for MoRuB »Will study the changing trends of phase transitions with changing Boron percentage

22. LIGO- G020000-00-P THANKS TO My mentor: Riccardo De salvo Francesco Fidecaro Prof.W.L Johnson(Material Science) Jan Schorer(Post doctoral Scholar) Hareem Tariq(Graduate Student) Surf Student: Maddalena Mantovani,mike Hall Brian Emmerson,Stefano Tirelli