I believe production method e.g. pressing, would play an important role on the final mechanical properties. having said that I will consider the papers published by Belluci and coworkers.

Please see below some of their articles

https://doi.org/10.1016/j.jeurceramsoc.2016.11.012

https://doi.org/10.1016/j.msec.2015.02.041

doi:10.3390/ma4020339

Dear friend,

I am for 6 years in this field. I recommend you to change you reinforcement if it is possible. due to large variety of it is published papers.

my suggestion is silicate bioceramics

please see: Published papers same as yours

http://www.sciencedirect.com/science/article/pii/S0142961299001313

http://www.worldscientific.com/doi/abs/10.1142/S0218625X05007669

.

https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Hydroxyapatite%2Fbioglass+&btnG=