The influence of residual stress on the shear strength between the bone and plasma-sprayed hydroxyapatite coating

Yung Chin Yang, Chyun Yu Yang

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Plasma-sprayed HA coating (HAC) 50 and 200 μm thick on Ti6Al4V cylinders was transcortically implanted in the femora of canines. Push-out testing of implant-bone interfaces showed that the HAC coating exhibited higher shear strength at 50 μm coating than 200 μm one. The plasma-sprayed HACs were exhibited compressive residual stresses and the thicker HAC exhibited higher residual stress than that of the thinner HAC. Due to the structure for 50 and 200 μm implants were the same, meaning similar cohesive strength of the lamellar splats. And, there was no difference in the physiological environment; hence the difference of the shear strength for the 50 and 200 μm-HAC implants could best be attributed to the compressive residual stress existed in the HA coating.

Original languageEnglish
Pages (from-to)1051-1060
Number of pages10
JournalJournal of Materials Science: Materials in Medicine
Volume19
Issue number3
DOIs
Publication statusPublished - 2008 Mar 1

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Bioengineering
  • Biomaterials
  • Biomedical Engineering

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