Thermal Grease used as thermal interface material for heat sinks is perhaps the best material today. It’s relatively cost effective and just plain works. But, as in all thermal management products, it’s not perfect and there are drawbacks that have to be considered.
In ATS Thermal Labs latest white paper, we talk about those drawbacks an in particular if there are issues of long term reliability in using thermal grease as a thermal interface material. The implications are very important as they will affect your electronic equipments MTBF. You can get a copy by clicking to this link, “Long Term Thermal Grease Reliability“