Bob, I don't know if anyone responded to this. I have been busy and I am not going back through emails to catch up.
One thing to notice is that stainless steel, particularly thin stainless steel should not be used above 800C with pressurized hydrogen. At 400C, stainless is OK, but by 800C the hydrogen permeation of stainless goes up by many orders of magnitude and it keeps going up exponentially at temperatures above this. So at the high temperature of that ad hoc dogbone experiment, I believe the hydrogen just leaked out through the stainless. The alumina tube inside was not sealed and so the full pressure generated from the thermal decomposition of the LiAlH4 was applied to the stainless tube. Bob Higgins On Fri, Jan 2, 2015 at 11:18 PM, Bob Cook <frobertc...@hotmail.com> wrote: > I for one did not understand that the center tube was made from > stainless steel. Apparently it was not sealed very well. The access port > for the pressure transducer to allow it to sense pressure, but remain at > below 85 degrees, probably leaked. That design and the welding or bonding > of the access tube at the port should be reviewed as the most likely > problem area for the leak that occurred. > > At least the temperature measuring equipment seemed to work and act to > confirm the thermal characteristics of the alumina. The bonding of the > Stainless steel inner tube to the alumina outer vessel should be described > and checked for gaps that may have caused higher local internal > temperatures. > > I would guess that the stainless steel tube was grounded? You would not > want it to act as an electrical conductor? > > I hope someone familiar with the dog bone test design can answer some of > these questions. > > Bob > > ----- Original Message ----- > *From:* ChemE Stewart <cheme...@gmail.com> > *To:* vortex-l@eskimo.com > *Sent:* Friday, January 02, 2015 9:09 PM > *Subject:* Re: [Vo]:The melting miracle > > I think a grounded metal pail might act like a faraday cage and absorb > EMF, but if it was open at the top microwaves not absorbed by the water > should leak out > > On Fri, Jan 2, 2015 at 11:37 PM, Eric Walker <eric.wal...@gmail.com> > wrote: > >> On Fri, Jan 2, 2015 at 10:40 AM, ChemE Stewart <cheme...@gmail.com> >> wrote: >> >> I had that weird thought too that the reactor might be generating >>> microwave radiation and heating the water... >>> >> >> Would the microwaves make it through the metal pail? >> >> Eric >> >> >
