You're most welcome!

I can go back even further :-)

Sorry but best to contact the presenter.

Really glad you like the talk. Thank you.

glad you like it..

Lu DZ. Kinetics, mechanisms and modelling of calcium treatment of steel (Doctoral dissertation).

@@bhadeshia123 thank you sir.

And how the rf react to different colors (waves).

There may be something in the books Professor Eskin has written, but I cannot find anything to suggest that steel can be melted using ultrasonics, in any substantial manner.

Oh hi Bill!

Thank you

Thank you

Sorry, not an expert on this.

Silicon normally forms four bonds in a diamond-like lattice. The silicon atoms at the surface of a highly purified bulk silicon sample cannot form bonds with the *MISSING* silicon atoms on the external side of the surface. These locations without the necessary electrons from the missing silicon atoms for completing the covalent bonds are "holes" denoting an area of positive charges (hence p-type, p standing for positive). Now gray tin has the same diamond lattice structure as silicon does so its surface is also rich in holes due to the incomplete bonds (a covalent bond needs two electrons but on a surface, only one side has silicon donating an electron to that covalent bond). Few-layer stanene is like such a diamond lattice squashed to near flatness like that of hexagonal graphene. The sides of these hexagons in few-layer stanene can form a polymeric tin backbone for conduction just like the polymeric carbon backbone for conduction in organic superconductors. The key is the conduction backbone and high density of holes on it so that the holes can *INTERACT STRONGLY* with each other to provide superconductivity. Since the white tin to gray tin transition temperature is 13.2C, it's plausible that tin is a near-STP superconductor.

@bhadeshia123 Around 13.2C, the two phases of tin can transition into each other but they have very different lattice structures (diamond-like vs. graphite-like). This is *DISTORTION* , maybe the kind referred to in this video. Few-layer stanene isn't exactly flat so it has layers very close by distorting each other. I expect that the tin atoms at an edge or a surface which are more isolated from other tin atoms to be bound less tightly to the bulk so white tin is likely the preferred lattice of them. In the bulk, gray tin may dominate.

perhaps just submerging them in sand may also work. not sure.

Sorry, but I honestly do not have confidence in suggesting the best solution for joints.

@@bhadeshia123 Oh it's no problem :) If I find something interesting (might take months) I'll loop back around and let you kow if you're curious. thanks

Okay

In the chart of plotting conduction band, forbidden band, and valence bands' energy vs. atomic spacing. The order of the elements with increasing atomic ⚛️ spacing are C, Si, Ge, Sn, and Pb.. to a gas. The electronic property changed from insulator (diamond) to semiconductor (silicon) to a semiconductor with a small bandgap (germanium) to metal with phase transition tin disease (white and gray tin) to a metal (lead) and to a gas. Tin occupies the atomic ⚛️ spacing near the cusp of the forbidden band where the conduction band nearly touches and merges with the valence band as the atomic ⚛️ spacing increases. Graphene is located at the cusp. Silver is also near there. The bandgap values of silver have large variances between different people's results. There might be multiple nearly flat bands congregating near the Fermi level for silver. These flat bands are conducive to having superconductivity so squeezed or extremely cold silver (thereby reducing the atomic spacing) may also become a superconductor. All materials if squeezed hard enough probably become superconducting when electron clouds of adjacent atoms overlap with each other.

Neutron stars are probably superconductors. Jupiter's core probably has superconducting hydrogen. Earth may have an outer core with a superconducting layer lying just beneath the mantle so the interface between them when distorted changes the Earth's magnetic field. The Earth's core has a Moon-size monocrystalline (annealed over billions of years of slow cooling) ferroelectric magnet so the superconducting outer core layer has an induced electrical current.

Thank you.

Thank you

Thank you

Okay

Thank you

Sorry to hear that. You can order directly from the publisher at shop.elsevier.com/books/steels/bhadeshia/978-0-443-18491-8

Indeed it is.

No, "cobble" means "a small round stone used to cover road surfaces"

What does "cramming m" mean?

Cramming means last minute study and trying to consume as much information as possible in a short period of time. I was cramming for my metallurgical systems exam.

Thank you, and clearly enjoying itself.

yes, wisdom.

I imagine the deer in Ohio are much bigger. The Muntjac deer is about the size of dog.

Yes, www.phase-trans.msm.cam.ac.uk/2019/abrasion.html

@@bhadeshia123 Have you done any hydrogen embrittlment tests on this material?

Bear in mind that this is ONE unit cell, which is then repeated periodically, so bonds are there but into the adjacent cells

Afraid I do not have that information

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Thank you, Jose, it really is nice to see wild-life in Comberton, which is only six miles away from the city of Cambridge.

Good you learned.

www.phase-trans.msm.cam.ac.uk/2019/abrasion.html

Thank you, you are quite right, it should read bar 1, bar 1, 1, as shown on page 40 of this book that you can download free-of-charge. www.phase-trans.msm.cam.ac.uk/2020/Crystallography_book.pdf

You are welcome! There is a free book you can download from www.phase-trans.msm.cam.ac.uk/teaching.html

Thank you.

Glad you enjoyed it.

Glad you enjoyed it

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Bellini L, Giumelli R. Welding of titanium clad components. Welding International. 1987 Jan 1;1(2):155-64.

Lots of fun

Very welcome

Agree wholeheartedly.

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Well done.

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Indeed, thank you.

Thank you.

Glad you liked it

Hmmmm...

@@bhadeshia123 Eliade*