The research progress of the conventional surface treatment techniques applied in the heat transfer enhancement is reviewed. The research status and development trend of the effects of the low-energy surface prepared by the novel surface treatment techniques such as magnetron sputtering, ion implantation, chemical composite plating and molecular self-assembly on fouling prevention and heat transfer enhancement are also discussed.

The surfaces of 45 steel and. 1Cr18Ni9Ti are coated with WFCL-11 laser cladding. Microstructure and hardness of their interfaces and surfaces of laser cladding are investigated, and their structure, property, hardness are analyzed under shock load. The effects of the different material ingredients between base and laser clad on their interfaces were found. The little the difference, the better the Interface.