interphase and interface
interphase and interface
(OP)
I"ll appreciate if anyone can indicate what is the right word to use when referring to the discontinuity plane or surface located between two insoluble liquid phases: interface or interphase ?





RE: interphase and interface
I would use interface to indicate a boundary between discrete items. I have only met interphase as a period in cell mitosis or as an electrical term.
Good Luck
johnwm
________________________________________________________
To get the best from these forums read FAQ731-376 before posting
UK steam enthusiasts: www.essexsteam.co.uk
RE: interphase and interface
A solid is a shape that may have a number of free standing (sur)faces. Can it be said liquid has a face? A liquid has a surface, but no free standing faces.
For me, I would lean towards inter-phase zone rather than interface.
RE: interphase and interface
RE: interphase and interface
I've seen in specialized technical books "interface" used to indicate the phase discontinuity when dealing with liquid level controllers in decanters and extraction columns. Is this wrong ?
RE: interphase and interface
RE: interphase and interface
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: interphase and interface
I've been working with Dual-Phase steel. This material changes phase (locally) after deformation.
Would it then be correct to describe the material under dynamic plastic deformation as interphase ?
regards,
Hydroformer
RE: interphase and interface
I was in Hawaii a few weeks ago. Still can't figure out how they can call those highways interstates.
RE: interphase and interface
Hg
Eng-Tips guidelines: FAQ731-376
RE: interphase and interface
Because, with dual-phase steel the change is brought about by deforming material AND not all of the material is deformed (flat portions) then, at the transition zones we'll see an interphase interface.
I know it's not quite that cut and dry. We likely have more of a homologation of the two phases tapering in concentration from one to the other.
regards,
Hydroformer
RE: interphase and interface
The same sources turn up a wider variety of definations for interface, but many cite the boundary between two fluids that do not mix.
RE: interphase and interface
Phase boundary, singular or plural I believe answrs the question and avoids the problem.
RE: interphase and interface
He's talking about two different substances both in liquid phase. Since they're both liquid phase, I can't see calling it a phase boundary.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
RE: interphase and interface
Thermodynamically speaking, two immiscible liquids are two phases, so phase boundary is appropriate.
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: interphase and interface
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
RE: interphase and interface
CoryPad is right.
Three of the most characteristic properties of liquids, related to the strengths of the intermolecular forces, are their ability to flow, which is shared by gases, their tendency to vaporize exerting a vapor pressure, and their possession of a sharply defined surface, which distinguishes them from gases.
Thus, interface appears to be the logical word for the interphase boundary as HgTX and Hydroformer have indicated.
RE: interphase and interface
I am unsure about one aspect of fluids possesing a sharply defined surface. Any surface they have, assuming gravity is present, is completely reliant on the vessel that contains said fluid. Therefore the sharply defined surface is after the fact.
RE: interphase and interface
I am unsure about one aspect of a fluid possessing a sharply defined surface. Assuming gravity is present, any surface it has completely relies on the vessel shape that contains said fluid. The sharply defined surface is not self sustaining and therefore must after the fact.
RE: interphase and interface
However, doesn't "fluid" mean either liquid or gas?
Hg
Eng-Tips guidelines: FAQ731-376
RE: interphase and interface
Yes, fluid is an error. Should be referring to liquids.
The overall shape of the oil & liquid as well as the location of the boundary between them rely on the shape of the glass. If the glass is removed, all the sharply defined surfaces change.
RE: interphase and interface
RE: interphase and interface
RE: interphase and interface