Rapid forming of hydroxyapatite-silica ceramics

Fwu Hsing Liu, Tsui Yen Ni, Yung Kang Shen, Jeou Long Lee

研究成果: 雜誌貢獻文章

摘要

This paper proposes a solid freefrom fabrication (SFF) technology for fabricating hydroxyapatite(HA)-silica ceramics, which can generate porous three-dimensional physical objects. The HA powder and the silica are mixed with water into slurries form as raw materials. The slurries are paved by a scraper to from a thin layer which is selective scanned by a laser beam according to the cross-section of a 3D model. The HA particles are embeded in the sintered silica matrix to form green parts via a suitable range of process parameters. The benefits of this process are: bio-ceramic parts can be built by lower laser energy and faster fabricating speed. Following a subsequence heat treatment process has been developed to optimize the crystallization process and to increase the strength of the sintered parts. The parts were analyzed by an Atomic Force Microscope (AFM) to determine the surface roughness. The results obtained indicate that the proposed process was possible to generate multilayer, overhanging, and porous structure with brittle property but sufficient integrity for handling prior to post-processing. It was possible to produce the porous structure from the proposed hydroxyapatite-silica ceramics, which had a greater potential for possible bone scaffolds fabrication.
原文英語
頁(從 - 到)137-140
頁數4
期刊Key Engineering Materials
450
DOIs
出版狀態已發佈 - 2011
事件3rd International Conference on Advanced Design and Manufacture, ADM2010 - Nottingham, 英国
持續時間: 九月 8 2010九月 10 2010

    指紋

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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