In-situ HRTEM obeservations of CNT tip growth in a small gas-reaction CVD cell
of nickel nanoparticle catalyst reveal that the nickel nanoparticle was
changing shape indicating that they were in liquid form at a temperature of
600C. I suspect iron nanoparticles would also be in liquid state very near
this temperature; and forget about copper, it would be melted at much lower
temps.
That is why I am still of the opinion that Rossi's 1000C or 1200C ecats, if
real, must be Carbon nanostructure based. No metal nanoparticle NAE, cavity,
voids, and vacancies will survive 1000C, let alone 1200C without signiificant
deformations of the nanocavities that house your NAE. Even refractory metals
like tungsten in nanopowder form would probably start sintering and migrating
at these levels.
Can anyone think of a metal in nanopowder form that will not start to sinter at
1200C? Only carbon nanostructures will survive these temps.
Hence, when you eliminate the impossible, whatever remains however improbable
must be the truth. Rossi's cats MUST be carbon nanostructure-based. And once
more, time will prove me right about this.
Jojo
----- Original Message -----
From: ChemE Stewart
To: vortex-l@eskimo.com
Sent: Friday, August 31, 2012 3:49 AM
Subject: Re: [Vo]:ECAT Simulations With Third Order Temperature Dependency
Nanopowder typically melts at lower temperatures than its equivalent solid.
On Thu, Aug 30, 2012 at 3:46 PM, Jed Rothwell <jedrothw...@gmail.com> wrote:
Axil Axil <janap...@gmail.com> wrote:
Does the maximum level of external temperature spike ever get above 1450C
at any point?
Ah. Google tells me that is the melting point of Ni . . .
Actually, you cannot get close to a melting point without bad stuff
happening. Sintering and local melting. The temperature is not likely to be
uniform.
- Jed
