Residual Stress Strengthening in Layered Tricalcium Phosphate (TCP) Bioceramics
Hahn E, Fey T, Zuo K, Jiang DL, Greil P (2011)
Publication Status: Published
Publication Type: Journal article
Publication year: 2011
Journal
Publisher: Goeller Verlag GmbH
Book Volume: 2
Pages Range: 133-138
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.
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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://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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