Wear Tests of Materials for FBR in Sodium Environment (4) Friction and Wear of Stellite No.1, Colmonoy No.6, Inconel 718, Hastelloy C, and 2Cr-1Mo Steel

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S.Kanoh*; K.Nakay*; S.Mizob*; M.Namek*; Atsumo, Hideo*

S.Kanoh*; K.Nakay*; S.Mizob*; M.Namek*; Atsumo, Hideo*

None

A series wear tests in sodium have been carried out to develop and screen friction and wear resistant materials for sliding components of the sodium cooled reactor. The present study was carried out on various combinations of Stellite No.1, colmonoy No.6, Inconel 718, Hastelloy C and 2 1/4Cr-1Mo Steel. The tests yielded the following results. (1) Colmonoy No.6 was the only material that descreased in hardness after tested. The higher the temperature was, the lower became the static friction coefficient (s) of Colmonoy No.6 alone. (2) The kinetic friction coefficient (k) of Stellite No.1 vs. Stellite No.1 was as high as 0.5, but it became lower (0.12) in case the mating material was Colmonoy No.6. The k-value of Colmonoy No.6 vs. Colmonoy No.6 was as low as 0.2. These material combinations scacerly wore. (3) The k-value of Inconel 718 vs. Inconel 718 was as low as 0.3, but this combination wore under load more than 300kg. (4) The k-value of Hastelloy C vs. Hast