Short Fiber Reinforced Hydroxyapatite‐based Bioceramics

Abstract

25 mm. The hot pressed sample showed a threefold higher strength and Young's modulus than the pressureless sintered samples, see Table 1.Conclusions: Studies were described to find an innovative route for fabricating C/SiC composites by using electrophoresis for infiltrating carbon fiber mats with a slurry of a very fine silicon carbide powder mixed with sintering aids (carbon black and boron carbide) and stabilized by polyethylene imine. It was shown that by means of well-dispersed, stable suspensions a high degree of infiltration of all spaces within the fiber rovings were achieved. For this purpose solid contents of > 10 vol% was more effective than lower contents. The formation of multilayer structures by lamination of single infiltrated fiber mats was demonstrated.

Deposition of hydroxyl-apatite on titanium subjected to electrochemical plasma coating

“…6(a), however, the HA particles decomposed into various compounds, such as titanium oxide, ␣-TCP, ␤-TCP and CaTiO 3 . During the EP coating, HA particles would react with either phosphate ions in the electrolyte or titanium oxide [26,27], viz 3Ca 10 (PO 4 ) 6 (OH) 2 + 2PO 4…”

The fracture energy of metal fibre reinforced ceramic composites (MFCs)

“…In general, it is recognised [20][21][22]24] that strong interfacial bonding is likely to impose greater constraint on fibre plasticity, and hence limit the plastic work done. On the other hand, it is by no means universally accepted that fibre plastic deformation is likely to play a significant role in energy absorption during fracture of MFCs, with several researchers [16,[33][34][35][36] proposing or assuming that pull-out is entirely dominant.…”

Effect of Synthesis Temperature on Morphology and Structural Characteristics of Hydroxyapatite Whiskers

“…To satisfy the physico-chemical demands for clinical applications, reinforcement of HA ceramics and composites have acquired a great deal of importance in past decades. Although reinforcement by whiskers or fibers has been considered as an effective way of improving the mechanical properties [4], most available ceramic, metal and polymer fibrous materials are at least bio-inert, easily provoking a fibrous tissue capsule of a variety of thicknesses when implanted in the body, decreasing the biocompatibility and bioactivity [5][6][7][8]. With this view, HA whiskers or fibres appear to be one of the most promising candidates to reinforce the mechanical and biological properties of biocomposite materials.…”