DELAMINATION OF ULTRA-THIN DIAMOND-LIKE CARBON COATINGS ON MAGNETIC RECORDING HEADS UNDER NORMAL LOADING
M Price and A Ovcharenko and R Thangaraj and B Raeymaekers, PROCEEDINGS OF THE ASME CONFERENCE ON INFORMATION STORAGE AND PROCESSING SYSTEMS, 2013, V001T01A018 (2013).
De lamination between an ultra-thin amorphous carbon overcoat, a silicon adhesion layer, and permalloy substrate material of a hard drive recording head is studied during normal loading/unloading of the head disk interface. The effect of normal load and thickness of the silicon adhesion layer on delamination of the Si-permalloy and amorphous carbon- Si interfaces is quantified using a molecular dynamics model. No permanent delamination is found for contact pressures up to 100 MPa, except for the case where a silicon adhesion layer is absent.
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