Storing gas at high temperature for rocket propellant.

On Sep 2, 11:34*am, wrote:

Another clueless idea again.

Refractory materials are brittle and can't handle loads

that's cause we're not very good at making them. each individual
crystal structure itself is certainly pretty strong.

hey, that reminds me, whatever happened to ceramic coated pistons and
valves and those high efficiency adiabatic car engines we were
supposed to have by now? they in some secret government warehouse with
the nuclear car, the personal jetpack, and the ark of the covenant?

In article , z wrote:
On Sep 2, 11:34=A0am, wrote:

Another clueless idea again.

Refractory materials are brittle and can't handle loads

that's cause we're not very good at making them. each individual
crystal structure itself is certainly pretty strong.

hey, that reminds me, whatever happened to ceramic coated pistons and
valves and those high efficiency adiabatic car engines we were
supposed to have by now? they in some secret government warehouse with
the nuclear car, the personal jetpack, and the ark of the covenant?

Well, some things have been released. Velcro, for example. The oil companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.

On Sep 3, 8:11*am, jmfbahciv jmfbahciv@aol wrote:
Robert Clark wrote:
On Sep 2, 9:20 pm, wrote:
On Sep 2, 1:20 pm, Robert Clark wrote:

On Sep 2, 11:34 am, wrote:
On Aug 30, 1:31 pm, Robert Clark wrote:
*We might be able to coat the carbon tanks with highly refractory
materials such as tantalum hafnium carbide which has a melting point
of 4500 K.
Another clueless idea again.
Refractory materials are brittle and can't handle loads
*Diamond is also refractory and brittle and can carry loads.
Not on the skin of a tank.

You must be very bad at your job as a mathematician because you suck
as an engineer.

*Diamond-like carbon, DLC harder than natural diamond.
"In short, diamond-like carbon (DLC) can coat things and make them
last forever.
DLC is harder than natural diamond and slicker than Teflon. That
combination gets more horsepower from engines, longer lifetimes from
mechanical parts that rotate and slide, survival of fragile optics in
hostile environments, and it saves lives by making better medical
options available."
http://www.diamondcoating.net/DLC_Applications.html

* * Bob Clark

Is it brittle?

/BAH


I don't know about these "diamond like carbon" coatings, but actual
diamond films are used as coatings for wear resistance despite
diamond's brittleness:

Developments in diamond coatings allow tools to work harder, last
longer.
By Jim Benes, American Machinist, April 2008.
http://www.diamondtc.com/media/ameri...april2008.html


Bob Clark

David Bostwick wrote:
Well, some things have been released. Velcro, for example. The oil companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.


Some ceramics have made their way into auto engines, both in the
catalytic converters and the blades on turbosuperchargers.
I imagine the problem with using them on pistons and cylinders is
differential heat expansion compared to metal, causing the ceramic to
de-bond from the surface it is applied to.

Pat

In sci.physics Pat Flannery wrote:


David Bostwick wrote:
Well, some things have been released. Velcro, for example. The oil companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.


Some ceramics have made their way into auto engines, both in the
catalytic converters and the blades on turbosuperchargers.
I imagine the problem with using them on pistons and cylinders is
differential heat expansion compared to metal, causing the ceramic to
de-bond from the surface it is applied to.

That and the shock that occurs when the fire lights off and some minor
lubrication issues.

People have been screwing around with ceramic engine parts for decades
with very little practical success as of yet.


--
Jim Pennino

Remove .spam.sux to reply.

David Bostwick wrote:
In article , z wrote:
On Sep 2, 11:34=A0am, wrote:

Another clueless idea again.

Refractory materials are brittle and can't handle loads
that's cause we're not very good at making them. each individual
crystal structure itself is certainly pretty strong.

hey, that reminds me, whatever happened to ceramic coated pistons and
valves and those high efficiency adiabatic car engines we were
supposed to have by now? they in some secret government warehouse with
the nuclear car, the personal jetpack, and the ark of the covenant?

Well, some things have been released. Velcro, for example. The oil companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.

Then don't write it without the caveat. It is dangerous to mislead in
this area.

/BAH

Robert Clark wrote:
On Sep 3, 8:11 am, jmfbahciv jmfbahciv@aol wrote:
Robert Clark wrote:
On Sep 2, 9:20 pm, wrote:
On Sep 2, 1:20 pm, Robert Clark wrote:
On Sep 2, 11:34 am, wrote:
On Aug 30, 1:31 pm, Robert Clark wrote:
We might be able to coat the carbon tanks with highly refractory
materials such as tantalum hafnium carbide which has a melting point
of 4500 K.
Another clueless idea again.
Refractory materials are brittle and can't handle loads
Diamond is also refractory and brittle and can carry loads.
Not on the skin of a tank.
You must be very bad at your job as a mathematician because you suck
as an engineer.
Diamond-like carbon, DLC harder than natural diamond.
"In short, diamond-like carbon (DLC) can coat things and make them
last forever.
DLC is harder than natural diamond and slicker than Teflon. That
combination gets more horsepower from engines, longer lifetimes from
mechanical parts that rotate and slide, survival of fragile optics in
hostile environments, and it saves lives by making better medical
options available."
http://www.diamondcoating.net/DLC_Applications.html
Bob Clark
Is it brittle?

/BAH


I don't know about these "diamond like carbon" coatings, but actual
diamond films are used as coatings for wear resistance despite
diamond's brittleness:

Developments in diamond coatings allow tools to work harder, last
longer.
By Jim Benes, American Machinist, April 2008.
http://www.diamondtc.com/media/ameri...april2008.html


I don't know anything about structures and materials; that's on my list
of textbooks to read. I was simply wondering if brittle can be
used effectively as a coating without having to go to an extreme
expense of ensuring the coating has no barbs (or whatever the term
is for non-smooth surfaces).

/BAH

In article , jmfbahciv jmfbahciv@aol wrote:
David Bostwick wrote:
In article
, z
wrote:
On Sep 2, 11:34=A0am, wrote:

Another clueless idea again.

Refractory materials are brittle and can't handle loads
that's cause we're not very good at making them. each individual
crystal structure itself is certainly pretty strong.

hey, that reminds me, whatever happened to ceramic coated pistons and
valves and those high efficiency adiabatic car engines we were
supposed to have by now? they in some secret government warehouse with
the nuclear car, the personal jetpack, and the ark of the covenant?

Well, some things have been released. Velcro, for example. The oil
companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.

Then don't write it without the caveat. It is dangerous to mislead in
this area.

/BAH

Actually, I believe the last line was a caveat. However, a caveat won't do
any good for those who need it. A True Believer knows that the oil companies,
government, or whoever, really is out to get us, and facts won't matter to
them.

On Sep 1, 10:40 am, Williamknowsbest wrote:
Nonsense

The hell you say. That's the shorted Mook response on record.

Once subtracting the amount of atmospheric O2 that's necessary for
gasoline or diesel fuel burning, there's not all that much energy per
kg compared to hydrogen peroxide that's all-inclusive, plus worthy of
using such h2o2 along with a little of fossil or that of your superior
synfuel is just going to be that much better than merely super-heated
steam.

In space travels or station-keeping outside of our protective
magnetosphere is where having a good density and amount of shielding,
and otherwise offering a cooling or thermal transfer fluid is
required. Nothing much accomplishes this better than good old h2o2.
Of course an h2o2 leak from a meteor passing through is going to get
real nasty, and so much so that using just h2o or perhaps something
like beer is going to prove more or less all around end-user friendly
and relatively failsafe, but this doesn't mean that h2o2 that's easily
and efficiently stored can't be made for use on demand while on the
fly, such as from all the available solar energy or from the local
reactor.

~ Brad Guth Brad_Guth Brad.Guth BradGuth

David Bostwick wrote:
In article , jmfbahciv jmfbahciv@aol wrote:
David Bostwick wrote:
In article
, z
wrote:
On Sep 2, 11:34=A0am, wrote:

Another clueless idea again.

Refractory materials are brittle and can't handle loads
that's cause we're not very good at making them. each individual
crystal structure itself is certainly pretty strong.

hey, that reminds me, whatever happened to ceramic coated pistons and
valves and those high efficiency adiabatic car engines we were
supposed to have by now? they in some secret government warehouse with
the nuclear car, the personal jetpack, and the ark of the covenant?
Well, some things have been released. Velcro, for example. The oil
companies
are paying the government to keep the pistons and similar things a secret.

The sad part is that there are people who will read this and think I'm
serious.
Then don't write it without the caveat. It is dangerous to mislead in
this area.

/BAH

Actually, I believe the last line was a caveat.

I understood it to be. But the ones who are going to use politics
to create havoc have the reading comprehension of soup.


However, a caveat won't do
any good for those who need it. A True Believer knows that the oil companies,
government, or whoever, really is out to get us, and facts won't matter to
them.

I'm just noting that this isn't something to joke about in this decade.

/BAH