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Fatigue and corrosion Fatigue testing of hip joint endoprostheses in air and in NaCl‐solution
Author(s) -
Kunze E.
Publication year - 1987
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19870381208
Subject(s) - corrosion fatigue , joint (building) , corrosion , fatigue limit , materials science , metallurgy , service life , structural engineering , composite material , engineering
To assure the quality of hip joint endoprosthesis stems, comparative investigations are made for the first time on marketable prostheses of different producers to determine fatigue and corrosion fatigue strength under long time service conditions. The results show that even for these remarkable corrosion resistant materials (cast CoCrMo‐and wrought CoNiCrMo‐alloys) under test conditions which are relevant for practice there exists no real fatigue strength, but only a corrosion fatigue loadability for finite life time. The fatigue loadability obtained in air will be reduced remarkably by the simultaneous effect of the physiological NaCl‐solution. Recommendations for an effective system of quality assurance are given.