Abstract
The composite materials for cryogenic use have been developed aiming at the application to the superconducting magnets and cryogenic fields. The properties required to the composites were surveyed considering the environments in the magnets. The mechanical and thermal properties of polymer matrix composite materials were demonstrated and the merits of the cryogenic applications were discussed. The demerits of the polymer matrix composites were also discussed based on the their characteristic at cryogenic temperatures. To overcome the difficulties the study of cryogenic application of ceramic materials and ceramic matrix composites has been started. The recent results about ceramics were also reported.
