Fabrication, Stress Relaxation Behavior and Bioactivity Evaluation of HA-316L Asymmetrical Functionally Gradient Biomaterial

Abstract:

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HA/316L powder asymmetrical functionally gradient biomaterial (FGM) with varying 316L content at 100vol%, 80vol%, 60vol%, 40vol%, 20vol%, 0vol% throughout the thickness of the samples was successfully fabricated by hot pressing(HP) technique. The stress relaxation behavior indicates that gradient structure of the asymmetrical HA/316L FGM has prominent relaxation effect of thermal residual stress. The largest stress in the FGM is 246.13 MPa, which is belonging to tensile stress and at 316L-80vol%HA/ 316L interface. The surfaces of HA/316L FGM are covered with a layer of bone-like apatite after soaking in dynamic SBF, and the apatite increases with the increase of HA content. It reveals that HA/316L FGM with good bioactivity can be obtained with reasonable component design of gradient layers.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

1049-1057

DOI:

10.4028/www.scientific.net/AMR.239-242.1049

Citation:

J. P. Zou "Fabrication, Stress Relaxation Behavior and Bioactivity Evaluation of HA-316L Asymmetrical Functionally Gradient Biomaterial", Advanced Materials Research, Vols. 239-242, pp. 1049-1057, 2011

Online since:

May 2011

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$35.00

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