Denithor
Diamond Member
- Apr 11, 2004
- 6,300
- 23
- 81
Three things.
First, I'm a chemist who works with silicone emulsions every day at work. And I don't think these TIMs are emulsions by the typical definition. An emulsion is defined as one liquid dispersed in another. In my work this is usually a silicone fluid of some kind that we disperse into water by various methods. Most TIMs on the other hand are a solid of some kind (silver, diamond particles, etc) dispersed into a liquid (silicone for the most part).
Second, have we confirmed that the liquid-metal TIMs actually bond/adhere to the metal surfaces they contact? And how about the silicon die? Because if they adhere to the metals but not to the silicon the hot/cold cycle mentioned above could do bad things to them (whole thing is fixed to IHS, swells under load, cracks the die it's not bonded to).
Third, guess you (IDC) haven't had time to start evaluating other TIMs over/under the IHS? As a corollary, if I could get some 'interesting' compounds from work would you be interested in evaluating for thermal transfer properties? I know we have magnesium stearate, titanium dioxide and several other things milled to very low particle size in silicone fluids...?
First, I'm a chemist who works with silicone emulsions every day at work. And I don't think these TIMs are emulsions by the typical definition. An emulsion is defined as one liquid dispersed in another. In my work this is usually a silicone fluid of some kind that we disperse into water by various methods. Most TIMs on the other hand are a solid of some kind (silver, diamond particles, etc) dispersed into a liquid (silicone for the most part).
Second, have we confirmed that the liquid-metal TIMs actually bond/adhere to the metal surfaces they contact? And how about the silicon die? Because if they adhere to the metals but not to the silicon the hot/cold cycle mentioned above could do bad things to them (whole thing is fixed to IHS, swells under load, cracks the die it's not bonded to).
Third, guess you (IDC) haven't had time to start evaluating other TIMs over/under the IHS? As a corollary, if I could get some 'interesting' compounds from work would you be interested in evaluating for thermal transfer properties? I know we have magnesium stearate, titanium dioxide and several other things milled to very low particle size in silicone fluids...?