研究领域

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stress corrosion cracking and hydrogen induced cracking of pipeline steels, high temperature oxidation, sulfidation and carbonaceous corrosion of materials and coatings, synthesis and application of carbon nanotubes and graphene materials

Synthesis and application of carbon nanotubes and graphene materials: Vertically aligned millimeter-scale carbon nanotube arrays (CNTA) have been successfully synthesized in our group by catalytic chemical vapor deposition. A unique technique has also been developed to unzip CNTAs into carbon nano-ribbons and graphene sheets. These carbon materials with high surface areas are used for making energy storage and conversion devices and for capturing CO2. Stress corrosion cracking, corrosion fatigue and mechanical behaviour of pipeline steels: Stress corrosion cracking (SCC) in steel pipelines is an industry problem worldwide. Management of corrosion and SCC is the single largest component of the pipeline integrity program budget. The objectives of my research on SCC are two folds: 1) understanding of mechanisms responsible for crack initiation and propagation, and 2) developing data base and methodologies for risk and integrity management of pipelines with corrosion and cracking problems. High temperature corrosion, coatings and new materials resistant to high temperature degradation: Our group is actively studying the mechanisms of high temperature corrosion and developing coatings and new materials resistant to high temperature corrosion including oxidation, sulfidation and carbonaceous corrosion such as carburization, metal dusting and coke formation. Porous ceramics and metal/polymer ceramic composites: Through reaction sintering, porous carbides and oxides with large pore density and varied pore sizes have been successfully developed. Application of the porous carbide and oxide ceramics has been explored including developing thermal insulating materials and metal/polymer ceramic composites for the use in corrosive and/or erosive environments.