Oxidation Protective Hybrid Coating for Thermoelectric Materials

Coating Materials

Porous Thermoelectric Materials

Thermoelectric materials are sometimes prepared using a sintering process in which the achievement of a high density is often one of the objectives. However, it has recently been shown that the introduction of a highly porous material is desirable in synthetic transverse thermoelements. Porosity may also be an advantage in conventional longitudinal thermoelectric modules in which a high thermal...

Roughness Model for Adhesion Testing of Pharmaceutical Coating Materials

Objective Roughness is the main parameter in interlocking bonding mechanism. Yet there is no model designed to evaluate the effect of surface roughness on adhesion of coating materials in pharmaceutical sciences. Materials and Methods In this study polymethyl metacrylate spherical beads with different sizes were poured into 10 mm mold, then it was pressed by hand screw and finally heated to 141...

Graphene Oxidation Barrier Coating

Since its experimental isolation in 2004, graphene has shown some outstanding properties. We propose that graphene can be used as an oxidation barrier coating and its oxidation resistance weakens at the graphene grain boundaries. Copper is a superior conductor but is easily oxidized in air at room temperature or higher. Using graphene as a coating material may reduce the cost of protecting agai...

A carbon nanotube-enhanced SiC coating for the oxidation protection of C/C composite materials

A carbon nanotube-enhanced SiC (CNT-SiC) coating was deposited on C/C composites to improve the oxidation resistance of C/C. The CNT-SiC coating was prepared by direct growth of CNTs on C/C surface at 700oC followed by deposition of SiC using chemical vapor deposition at 1150oC for 1 hour. SiC was deposited on the CNTs as well as the interface between CNTs and C/C, making CNTs strongly rooted o...