Journal
CORROSION SCIENCE
Volume 197, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.110075
Keywords
Artificial joint; 316L stainless steel; CoCrMo alloy; Crevice corrosion
Funding
- National Natural Science Foundation of China [51971035, U1964204]
- Scientific and Technological Innovation Foundation of Foshan [BK20AE006]
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The width of crevices has different effects on corrosion for different alloys, with narrower crevices leading to more severe corrosion. CoCrMo alloy does not exhibit typical crevice corrosion, but the exterior of the crevices shows varying degrees of corrosion due to mass transfer effect caused by different widths of the crevices.
Crevices of artificial joints can become occluded and are prone to severe corrosion. Different crevice width was controlled to reveal its effect to corrosion for two commonly used alloys (316L stainless steel and CoCrMo alloy). The results show that 316L stainless steel with the narrowest (0.05 mm) width corrodes more easily and more severely. There is no typical crevice corrosion for CoCrMo alloy, and the exterior of the crevice has different degrees of corrosion due to the mass transfer effect caused by the crevice with different widths. The corrosion rate reaches the lowest value when the width is 0.1 mm.
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