Frank,
A little more information please.. the citation is for reaction
rate over a thermal range and for different pressure values. Are you doing an
exact replication of same experiment or did you current thru your filament?
Tungsten can be melted if you created a Langmuir torch... I do keep an eye on
tungsten as a good candidate for LENR because it's high melting temp could
allow smaller more active final geometry if matched with an appropriate alloy..
perhaps you found it if your melting occurred without the electrical arcing
normally required for welding :_)
Fran
http://www.lateralscience.co.uk/AtomicH/atomicH.html Invented by Langmuir in
1926 , this device produces a temperature of 3700 degrees centigrade. Tungsten
can be melted, diamond vapourised.
A jet of hydrogen gas is dissociated as it passes through an electric arc. H2 >
H + H - 422 kJ. An endothermic reaction, with the intensely hot plasma core of
the arc providing the dissociation energy. The atomic hydrogen produced soon
recombines; and this recombination is the source of such high temperatures
(easily outperforming oxy-hydrogen: 2800oC and oxy-acetylene: 3315oC).
The hydrogen can be thought of as simply a transport mechanism to extract
energy from the arc plasma and transfer it to a work surface. It produces a
true flame, as the heat is liberated by a chemical reaction. H + H > H2 +
422kJ. The molecular hydrogen burns off in the atmosphere, contributing little
to the heat output.
>From the May 1, 1926 issue of The Science News-Letter -
"...developed by Dr. Irving Langmuir, assistant director of the Schenectady
laboratory, and makes use of what he calls flames of atomic hydrogen....
Electric currents of 20 amperes and at voltages ranging from 300 to 800"
>From A Text Book of Inorganic Chemistry, Partington 1946 -
"Atomic hydrogen. - Langmuir (1912) has shown that hydrogen in contact with a
tungsten wire heated by an electric current at low pressure, is dissociated
into atoms:
H2 <=> 2H. This splitting of the hydrogen molecule is attended by the
absorption of a large amount of energy, about 100kcal per gram molecule. The
atomic hydrogen so formed is chemically very active. Langmuir also showed that
atomic hydrogen is formed when an electric arc between tungsten electrodes is
allowed to burn in hydrogen at atmospheric pressure. The atomic hydrogen was
blown out of the arc by a jet of molecular hydrogen directed across the arc,
and formed an intensely hot flame, which is capable of melting tungsten (m.p.
3400oC). This flame obtains its heat not from combustion but from the
recombination of hydrogen atoms into H2. It is suitable for melting and welding
many metals. Iron can be melted without contamination with carbon, oxygen or
nitrogen. Because of the powerful reducing action of the atomic hydrogen,
alloys can be melted without fluxes and without surface oxidation. A feature of
the flame is the great rapidity with which heat can be delivered to a surface,
which is very important in welding operations."
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, May 08, 2013 10:01 PM
To: [email protected]
Subject: EXTERNAL: [Vo]:got something
I tried all kinds of gasses on all sorts of filaments Got nothing then
something happened with ammonia on tungsten filaments.
http://pubs.rsc.org/en/content/articlelanding/1980/F1/f19807600280
I will get to the bottom of what ever melted my wire.
Frank Znidarsic
