Mechanical Properties of Dysprosia (Dy2O3) Added Al2O3 ZrO2 HA Composite

Hyung Suk Kim; Hyun Hwi Lee; Seung Ho Kim; Sung Hun Cho; Soo Wohn Lee

doi:10.4028/www.scientific.net/MSF.695.525

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HomeMaterials Science ForumMaterials Science Forum Vol. 695Mechanical Properties of Dysprosia (Dy2O3) Added...

Mechanical Properties of Dysprosia (Dy₂O₃) Added Al₂O₃ ZrO₂HA Composite

Abstract:

Alumina (Al₂O₃)-zirconia (ZrO₂)-hydroxyapatite (HA) composite is used as biomaterials. Biomaterials must be bio-compatible to the body and should have excellent mechanical and tribological properties. 1 wt.% of rare earth oxide (Dy₂O₃) was added to the basic composition of composite Al₂O₃-ZrO₂ (15wt.%)-HA(1wt.%). The powder mixture was hot-pressed at 1300°C in Ar gas environment under 30 MPa pressure for densification sintering. The microstructural analysis, phase transformation, surface morphology and mechanical properties like hardness, fracture toughness, mechanical strength of the composite were observed and evaluated by SEM , XRD, Vickers hardness, etc. The results demonstrated that the addition of 1 wt.% dysprosia has increased the mechanical properties of composite.

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Periodical:

Materials Science Forum (Volume 695)

Pages:

525-528

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.695.525

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Online since:

July 2011

Authors:

Hyung Suk Kim, Hyun Hwi Lee, Seung Ho Kim, Sung Hun Cho, Soo Wohn Lee

Keywords:

Bioceramic, Dysprosia, Hot Press, Hydroxyapatite (HAP), Mechanical Property

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References

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