Pat said:Quoted message said:1. steel can most definitely be porous. and as far as the subject of
chains are concerned, surface roughness can retain significant foreign
material, or in this case, oil.
2. steel can most definitely absorb different materials in solidus.
solubility of hydrogen in steel, even at room temperature, is phenomenal.
but again, you're simply seeking to wriggle out from under your own
mis-statement, not be factually correct.
Please explain how "steel can most definitely be porous"
steel can be porous - that means holes in it. sintered applications are
the classic, but cheapo castings are another.
Quoted message said:and "steel can most
definitely absorb different materials in solidus (sic)".
as far as the definitive statement is concerned, solid solutions are
very common. not really any different to liquid solutions except that
mixing takes a lot longer. carburized or nitrided components depend on
this phenomenon.
as far as the jobstian fudging is concerned however, he's alluding to
surface adsorption. adsorption is a different matter entirely, and
means a molecular layer sticks to a substrate, regardless of whether
it's source has been removed or not.
Quoted message said:And this time, use
references
i could, but i really can't be bothered. use google for adsorption,
porosity and sintering, and solid solutions. these are all very common
scientific terms.
Quoted message said:instead of your tone of righteous indignation simply because you
don't like Jobst.
it's not whether i like him, it's the fact that he's a bullshitter.
example: "Solvent will dissolve the binder for this mixture and allow
gravity removed it in the manner described."
oil has no "binder". it has viscosity, but that's not the same thing.
it has surface tension, but that's not the same thing. what he means is
that bulk application of a liquid can free the surface tension holding a
grit particle in place, and that the lower viscosity can speed its
migration. but scientifically, bulk oil can do exactly the same thing,
only a little slower. [censored] about "grit suspended in oil" is utter
fabrication because oil can't/won't do that unless you're discussing
very short time frames.
Quoted message said:I find it hard to believe that even if steel can absorb
hydrogen, that it would be at all applicable to this discussion.
its possible relevance to chain lubrication is the use of cleaning
agents. if the agent evolves hydrogen, through some misapplication, it
can be a factor in the longevity of a chain. i'm not saying it does
happen, but since jobst insists in writing in definitive terms, example:
"Solvent /will/ dissolve the binder" [my emphasis], his definition is
incorrect.
for the record, hydrogen /probably/ is not a factor, but it's wrong to
make a definitive like: "Steel is not porous and at temperatures below
its melting point, does not absorb other materials" for exactly the
reasons i stated.
