Contact damage in porcelain/Pd-alloy bilayers

H. Zhao, Xiao Hu, Mark Bush, B.R. Lawn

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


An analysis is made of contact damage in brittle coatings on metal substrates, using a case study of a dental porcelain coating of thickness between 0.1 and 1 mm fused onto a Pd alloy base, with spherical indenter of radii 2.38 and 3.98 mm. At large coating thicknesses (>300 mu m), the first damage takes the form of surface-initiated transverse cone cracks outside the contact. At small coating thicknesses (
Original languageEnglish
Pages (from-to)676-682
JournalJournal of Materials Research
Issue number3
Publication statusPublished - 2000


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