Carbon seal materials with superior mechanical properties and fine-grained structure fabricated by a new process

Carbon seal material was prepared using a new liquid mixing process of the raw materials, which had not only lowered open porosity but also provided excellent mechanical properties, especially higher compressive strength (210 MPa) compared with the material prepared by the conventional method. Scanning electron microscopy (SEM) results show that such material has a fine-grained structure as well as little pore diameter. The influence of the manufacturing procedure of the materials on the performance and microstructure is investigated. In addition, correlations between properties and microstructure are also discussed.