Journal article


Residual Stress Strengthening in Layered Tricalcium Phosphate (TCP) Bioceramics


Publication Details
Author(s): Hahn E, Fey T, Zuo K, Jiang DL, Greil P
Publisher: Goeller Verlag GmbH
Publication year: 2011
Volume: 2
Pages range: 133-138
ISSN: 2190-9385

Abstract

Residual compressive stress formation on the outer surface layers of bioresorbable calcium phosphate multilayer composites was investigated in order to increase their strength. Multi layer laminates of beta-Ca-3(PO4)(2) (TCP) from two different powders were prepared by means of tape casting, laminate pressing, and pressureless sintering. As the laminates cooled from sintering temperature, differences in thermal contraction between the surface layer prepared from a Mg2+-doped beta-TCP powder and the core layers caused the generation of surface stresses. The relaxation strain upon removing the surface layer by continuous etching in HNO3 was measured and the distribution of residual stress near the surface was derived. Compressive stresses of approximately 10 MPa were measured, which offer further potential to improve the load-carrying capability of resorbable TZP bioceramics for application in bone defect and trauma treatment.



How to cite
APA: Hahn, E., Fey, T., Zuo, K., Jiang, D.-L., & Greil, P. (2011). Residual Stress Strengthening in Layered Tricalcium Phosphate (TCP) Bioceramics. Journal of Ceramic Science and Technology, 2, 133-138. https://dx.doi.org/10.4416/JCST2011-00005

MLA: Hahn, E., et al. "Residual Stress Strengthening in Layered Tricalcium Phosphate (TCP) Bioceramics." Journal of Ceramic Science and Technology 2 (2011): 133-138.

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