Abstract
Hydroxyapatite (HAp) ceramics were prepared by hydrothermal hot pressing (HHP) processes through the reaction between octacalcium phosphate (OCP) and ammonia water, at 300℃. When the amount of ammonia was over the chemical stechiometric ratio, pure HAp ceramics was obtained. The high concentration of ammonia water was advantageous for the solidification of the HAp ceramics. The appropriate amount of water improved the toughness, but greatly reduced the tensile strength. With addition of 10% high concentration ammonia water, HAp ceramic was achieved at 300℃ by HHP method. The density, fracture toughness, and tensile strength of the ceramics reached 2.82g/cm^3, 1.07MPam^<1/2>, and 18.2MPa, respectively. The present study demonstrated that the HHP method was a useful method for preparing HAp ceramics at low temperature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Proceedings of the Asian Pacific Conference on Fracture and Strength and International Conference on Advanced Technology in Experimental Mechanics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.