1. TRANSPARENT STEEL Good smelling steel Singing steel
Materials World, March 1995, p. 128

2. Five plates and two rods, National Art Gallery, Washington

3. Kral & Spanos, 1999

4. Smithsonian: Natural History Museum

6. Fe-Ni alloy, mm thick
Smithsonian: Air & Space

7. Inter-galactic gas Fe
guess what?

9. hexagonal close-packed

10. hexagonal close-packed
cubic close-packed

12. body-centred cubic (ferrite)
face-centred cubic (austenite)

14. Bundy (1965)

15. pure iron Cohesive energy (eV/atom) Normalised volume -65 -55 -45 -35
Cubic-P
pure iron
Diamond cubic
Cohesive energy (eV/atom)
Hexagonal-P
b.c.c
c.c.p
h.c.p
0.8
1.0
1.2
1.4
1.6
Normalised volume
Paxton et al. (1990)

16. electron has a spin;
effectively a current in a loop, creating a little magnet;
this is the
Bohr magneton

18. Bhor magnetons
Iron atom in ferrite
Iron atom in thin film 3.1
Iron atom in austenite or 0.6

19. Fe Ru
6d 2s Os Hs

20. Iron [Ar] + 8 e- b.c.c
Ruthenium [Kr] + 8 e- h.c.p
Osmium [Xe] + 14f + 8 e- h.c.p
Hassium [Rn] + 14f + 8 e- ???

21. pure iron body-centred cubic (ferrite) cubic close-packed (austenite)
hexagonal close-packed
double hexagonal close-packed
trigonal
tetragonal
magnetic transitions
pure iron

22. DISPLACIVE
RECONSTRUCTIVE

23. The Song

24. Why is iron opaque?
opaque
transparent

26. Nanotubes grow efficiently from gas with iron as catalyst.
1991 Sumio Iijima studied soot, found nanotubes, nested like Russian dolls.
Nanotubes grow efficiently from gas with iron as catalyst.

27. Perception of smell
template model
Luca Turin

28. nickel in cage molecule
iron in cage molecule
Luca Turin

29. an apple weighs 1 Newton
= 1 Pa
1 m

31. Scifer, 5.5 GPa with ductility!
Kobe Steel

32. Atom probe image of Scifer,
5.5 GPa steel wire
Bhadeshia and Harada, 1993

33. Scifer is 9 Denier 10 Denier
1 Denier: weight in grams, of 9 km of fibre
10 Denier
Scifer is 9 Denier

34. 180 to 220 °C
Cooking temperature?

35. Pizza steel, cooked at 200 °C for 20 days
2.5 billion apples on one square meter
Caballero, Mateo & Bhadeshia

36. Longest (2 km) single-span bridge, near Kobe, Japan

38. Rope bridge, Atlantis, Bahamas

39.
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