The properties of oxidation growth and overheating by poor contact

In this paper, we experimented the glowing and heating phenomenon at the contacts of copper wires, and studied the breeding process, the growing characteristics of copper oxide according to the diameter of copper wires and AC current. The surface structure, crystalline structure, compositions and calory variation of Cu₂O that grew at the contacts of two copper wires were analyzed by using scanning electron microscope (SEM), metallurgical microscope, energy dispersive X-ray spectroscopy (EDX) and differential scanning calorimetry (DSC). As these results, we could know that carbonization and oxidation reaction generated on the outside of the oxide, and only oxidation reaction generated in the inside of the oxide