Biodegradable Fiber Reinforced Ti Composite Fabricated by Spark Plasma Sintering Method

Hisashi Sato; Seiichiro Umaoka; Yoshimi Watanabe; Ick Soo Kim; Masakazu Kawahara; Masao Tokita

doi:10.4028/www.scientific.net/MSF.539-543.3201

Paper Titles

The Effect of Crucible Configuration on Joule and Pinch Effects in EMCC Process of Silicon
p.3179

Fabrication Method for Metallic Closed Cellular Materials Containing Different Materials from that of Cell Walls by SPS Method
p.3184

Characteristics of Ti50-Pd(50-x)-W(x) High Temperature Shape Memory Alloy
p.3190

Equal Channel Angular Extrusion (ECAE) of Ni-Ti Based Shape Memory Alloy Systems
p.3195

Biodegradable Fiber Reinforced Ti Composite Fabricated by Spark Plasma Sintering Method
p.3201

On Cyclical Phase Transformations in Driven Alloy Systems: A Mass-Action Kinetics Approach
p.3207

Ti-Ni Shape Memory Alloy Film Cantilever Actuator for Micro-Probing
p.3213

Intelligent Materials Synthesis Based on Millimeter-Wave Heating and SPS Methods
p.3219

Electrochemical Properties of Type 304 Stainless Steels Produced by Several Methods
p.3225

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Biodegradable Fiber Reinforced Ti Composite...

Biodegradable Fiber Reinforced Ti Composite Fabricated by Spark Plasma Sintering Method

Abstract:

Ti and Ti alloys are particularly attractive materials as the metallic implant-material. This is because that these alloys have low shear modulus and the good biological compatibility with bone. However, interfacial adhesion ability of bone and Ti alloy is low. As improvement method of the interfacial adhesion ability, bioaffinity material like hydroxyapatite has been coated on surface of the Ti alloys. However, such bioaffinity materials have low strength and wear resistance. In this study, Ti composites containing biodegradable poly-L-lactic-acid (PLLA) fiber were fabricated by spark plasma sintering (SPS) method. The PLLA fiber plays a role as reinforcement in Ti matrix, and can be gradually decomposed inside body with progress of time. By the decomposition of PLLA, pore is generated in Ti matrix, and bone simultaneously penetrates into the pore. Therefore, tightly bond between bone and Ti matrix can be expected. Using the Ti-PLLA composites fabricated by SPS method, microstructural observation and mechanical tests were performed. It was found that Ti-PLLA composite has laminate-layer structure with plate-like shape PLLA. Hardness and wear behavior of Ti-PLLA composite has anisotropy due to its structure. However, strength of the Ti-PLLA composite is low because of the imperfect sintering of Ti matrix. Since sintering of Ti matrix can be improved by changing the temperature of SPS, Ti-PLLA composite with anisotropic mechanical properties can be expected by SPS method.

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

3201-3206

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.3201

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Online since:

March 2007

Authors:

Hisashi Sato, Seiichiro Umaoka, Yoshimi Watanabe, Ick Soo Kim, Masakazu Kawahara, Masao Tokita

Keywords:

Biodegradable Material, Biomaterial, Composite, Hardness, Implant Materials, PLLA, Sintering, Spark Plasma Sintering (SPS), TiAl, Wear

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