期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE
卷 222, 期 H7, 页码 1107-1114出版社
SAGE PUBLICATIONS LTD
DOI: 10.1243/09544119JEIM411
关键词
glass-ceramic; selective laser sintering; rapid manufacturing; bone repair; bioactivity
This paper develops an indirect selective laser sintering (SLS) processing route for apatite-wollastonite (A-W) glass-ceramic, and shows that the processing route, which can create porous three-dimensional products suitable for bone implants or scaffolds, does not affect the excellent mechanical and biological properties of the glass-ceramic. 'Green parts' with fine integrity and well-defined shape have been produced from glass particles of single-size range or mixed-size ranges with acrylic binder in various ratios by weight. A subsequent heat treatment process has been developed to optimize the crystallization process, and ail infiltration process has been explored to enhance mechanical strength. Three-point bending test results show flexural strengths of up to 1.02 MPa, dependent on porosity, and simulated body fluid (SBF) tests show that the laser sintered porous A-W has comparable biological properties to that of conventionally produced A-W.
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