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Super-hard metal 'four times tougher than titanium'
BBC ^
| 07/22/2016
| Helen Briggs
Posted on 07/22/2016 7:58:20 AM PDT by BenLurkin
A super-hard metal has been made in the laboratory by melting together titanium and gold.
The alloy is the hardest known metallic substance compatible with living tissues, say US physicists.
The material is four times harder than pure titanium and has applications in making longer-lasting medical implants, they say.
Conventional knee and hip implants have to be replaced after about 10 years due to wear and tear.
Details of the new metal - an alloy of gold and titanium - are revealed in the journal, Science Advances.
Prof Emilia Morosan, of Rice University, Houston, said her team had made the discovery while working on unconventional magnets made from titanium and gold.
The new materials needed to be made into powders to check their purity, but beta-Ti3Au, as it is known, was too tough to be ground in a diamond-coated mortar and pestle.
(Excerpt) Read more at bbc.com ...
TOPICS: Health/Medicine; Science
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To: BenLurkin
It will probably be used as thin coatings on critical wear surfaces.
21
posted on
07/22/2016 8:15:44 AM PDT
by
SpaceBar
To: BenLurkin
This explains why the aliens want our gold.Okay, so explain all the anal probing.
22
posted on
07/22/2016 8:16:51 AM PDT
by
Lazamataz
(With Cruz's 2016 Convention speech, Jeb Bush and Ted Cruz are now solid allies.)
To: BenLurkin
Looking at the linked
paper in sciencemag.org, it's got a Vickers hardness of 800 HV (corresponding to a Rockwell hardness of 62 (comparable to the hardest tool steels)).
So, it's not the hardest metal there is (but close). It's the hardest metal compatible with being implanted in a human body for extended periods.
23
posted on
07/22/2016 8:17:39 AM PDT
by
PapaBear3625
(Big government is attractive to those who think that THEY will be in control of it.)
To: BenLurkin
Can someone please explain in layman’s terms how the softest metal can strengthen the strongest one?
24
posted on
07/22/2016 8:17:44 AM PDT
by
Safrguns
To: Safrguns
“explain in laymans terms how the softest metal”
Gold isn’t the softest metal...
25
posted on
07/22/2016 8:24:48 AM PDT
by
babygene
(Make America Great Again)
To: BenLurkin
People make a big deal about Titanium, and its great, but mostly because of its strength to weight ratio. Lots of metals tougher or harder, etc. Pure titanium actually has a lot of drawbacks, but aircraft grade Ti is good. This sounds like just another alloy.
26
posted on
07/22/2016 8:26:07 AM PDT
by
Paradox
(Opinions can evolve, but Principles should be immutable.)
To: uncle fenders
Yep, like adding Aluminum to Bronze to make it stiffer, sounds strange, but true.
To: BenLurkin
“Well, it’s real name has thirty-seven syllables. I just call it Unobtainium.” Dr. Brazelton......
“The Core”
KYPD
28
posted on
07/22/2016 8:31:31 AM PDT
by
petro45acp
(" It IS About Islam: exposing the truth about ISIS, Al Qaeda, Iran, and the caliphate" by Glenn Beck)
To: Safrguns
Can someone please explain in laymans terms how the softest metal can strengthen the strongest one?Easy. Here's the explanation from Science Magazine:
The fourfold increase in the hardness of Ti3Au compared to other TiAu alloys and compounds can be attributed to the elevated valence electron density, the reduced bond length, and the pseudogap formation.
Child's play.
29
posted on
07/22/2016 8:32:28 AM PDT
by
Yo-Yo
(Is the /sarc tag really necessary?)
To: BenLurkin
beta-Ti3Au
meh.... waiting for Rc-Ti3Au
30
posted on
07/22/2016 8:32:45 AM PDT
by
Covenantor
(Men are ruled...by liars who refuse them news, and by fools who cannot govern. " Chesterton)
To: fwdude
now adays $6 million is a drop in the hat.
31
posted on
07/22/2016 8:39:27 AM PDT
by
longfellow
(Bill Maher, the 21st hijacker.)
To: IronJack
Tougher than tungsten?Tungsten is not biocompatible.
32
posted on
07/22/2016 8:40:23 AM PDT
by
from occupied ga
(Your government is your most dangerous enemy)
To: Safrguns
Can someone please explain in laymans terms how the softest metal can strengthen the strongest one? Gold is far from the softest metal. I suspect the softest common metal at room temperature is mercury, which is liquid.
To: Yo-Yo
and the pseudogap formation Of course! I completely overlooked the pseudogaps! How foolish of me.
34
posted on
07/22/2016 8:43:58 AM PDT
by
Company Man
(T R U M P - P E N C E 2 0 1 6)
To: Yo-Yo
Imagine, something as soft as Carbon can make Iron into Steel.
35
posted on
07/22/2016 8:46:37 AM PDT
by
Paradox
(Opinions can evolve, but Principles should be immutable.)
To: longfellow
now adays $6 million is a drop in the hat. Sad but true.
In the mid-70's, a million dollars could have you living like a king. Of course, interest rates were at double digits then.
36
posted on
07/22/2016 8:57:42 AM PDT
by
fwdude
(If we keep insisting on the lesser of two evils, that is exactly what they will give us from now on.)
To: Sybeck1
37
posted on
07/22/2016 9:01:48 AM PDT
by
Squantos
( Be polite, be professional, but have a plan to kill everyone you meet ...)
To: Covenantor
Procrastinator !......:o)
38
posted on
07/22/2016 9:03:25 AM PDT
by
Squantos
( Be polite, be professional, but have a plan to kill everyone you meet ...)
To: from occupied ga
I suspected as much. Why not?
39
posted on
07/22/2016 9:08:23 AM PDT
by
IronJack
To: IronJack
40
posted on
07/22/2016 9:20:07 AM PDT
by
from occupied ga
(Your government is your most dangerous enemy)
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