Disclosed herein are multiple-part electrochemical thermal signaling or marking systems, comprising at least one first part comprising at least one super- corroding alloy and at least one absorbent material, and at least one second part. The at least one first part and the at least second part must be kept separate until use, at which time they are combined and heat generation commences. Further disclosed herein are containment devices comprising such thermal signaling or marking systems.
