Processing and properties of transparent hydroxyapatite and β tricalcium phosphate obtained by HIP process
Source abstract
Abstract
Abstract Stoichiometric β -tricalcium phosphate (β-TCP) and hydroxyapatite (HA) powders were synthesized by chemical precipitation of aqueous solutions of diammonium phosphate and calcium nitrate. After a calcination treatment and a milling step, the powders were shaped by slip casting. The sintering temperature effect on the relative density and the average grain size was investigated. By natural sintering at 1200 and 1120 °C, densities of 98% and 99% were obtained for HA and TCP, respectively. After determination of minimum temperatures to obtain only closed porosity and a pre-sintering at these temperatures, hot isostatic pressing (HIP) treatment was carried out. Transparent or translucent samples were obtained, indicating a relative density very close to the theoretical value (>99.9%). Mechanical properties (three-point bending strength, fracture toughness, Young's modulus and Vickers hardness) were measured on both materials with similar grain size (∼ 1 μm). Bending strengths of 181 and 105 MPa were measured for TCP and HA, respectively.
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Research context
OpenAlex topics: Bone Tissue Engineering Materials · Additive Manufacturing and 3D Printing Technologies · Dental materials and restorations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Biomaterial developments for bone tissue engineering10.1016/S0142-9612(00)00102-2 ↗
2. Bioceramics10.1111/j.1151-2916.1998.tb02540.x ↗
3. Manufacture of macroporous calcium hydroxyapatite bioceramics10.1016/S0955-2219(99)00131-4 ↗
4. Calcium phosphate ceramics as hard tissue prosthetics10.1097/00003086-198106000-00037 ↗
5. Macroporous biphasic calcium phosphate ceramics: influence of macropore diameter and macroporosity percentage on bone ingrowth10.1016/S0142-9612(97)00180-4 ↗
6. Porous HA ceramic for bone replacement: role of the pores and interconnections—experimental study in the rabbit10.1023/A:1011256107282 ↗
7. Effects of powder stoichiometry on the sintering of β-tricalcium phosphate10.1016/j.jeurceramsoc.2006.09.005 ↗
8. AFNOR, Détermination quantitative du rapport Ca/P de phosphates de calcium, Désignation NFS94-066, AFNOR, Paris, 1998.
9. AFNOR, Détermination qualitative et quantitative des phases étrangères présentes dans les poudres, dépôts et céramiques à base de phosphate de calcium, Désignation NFS94-067, AFNOR, Paris, 1993.
10. AFNOR, Méthode d'essai de détermination de la ténacité à la rupture des céramiques monolithiques—Partie 3: méthode de l’éprouvette à entaille en chevron, Désignation NF EN14425-3 standard.
11. AFNOR, Céramiques techniques avancées. Propriétés mécaniques des céramiques monolithiques à température ambiante. Partie 2 détermination du module de Young, du module de cisaillement et du coefficient de Poisson, Désignation NF EN 843-2 standard, AFNOR Paris, 2007.
12. An improvement in sintering property of beta-tricalcium phosphate by addition of calcium pyrophosphate10.1016/S0142-9612(01)00201-0 ↗
13. Preparation of α- and β-TCP ceramics with and without magnesium addition10.1016/0272-8842(94)90050-7 ↗
14. Sintering and robocasting of beta-tricalcium phosphate scaffolds for orthopaedic applications10.1016/j.actbio.2006.02.004 ↗
15. Clarifying the effect of sintering conditions on the microstructure and mechanical properties of β-tricalcium phosphate10.1016/j.ceramint.2010.03.015 ↗
16. Properties of [beta]-Ca3(PO4)2 bioceramics prepared using nano-size powders10.1016/j.ceramint.2006.02.011 ↗
17. Magnesia-doped HA/beta-TCP ceramics and evaluation of their biocompatibility10.1016/S0142-9612(03)00538-6 ↗
18. Processing of nano-grained materials
19. Processing nanocrystalline ceramics for applications in superplasticity10.1016/0921-5093(93)90318-9 ↗
20. Transmission physics and consequences for materials selection, manufacturing and applications10.1016/j.jeurceramsoc.2008.03.025 ↗
21. Transparent alumina: a light scattering model10.1111/j.1151-2916.2003.tb03325.x ↗
22. Microstructure and related mechanical properties of hot pressed hydroxyapatite ceramics10.1007/BF00124890 ↗
23. Preparation, microstructure and mechanical properties of dense polycrystalline hydroxyapatite10.1007/BF02396876 ↗
24. Influence of sintering temperatures on hardness and Young's modulus of tricalcium phosphate bioceramic by nanoindentation technique10.1016/j.matchar.2004.06.007 ↗
25. The effects of sintering temperature on the properties of hydroxyapatite10.1016/S0272-8842(99)00046-2 ↗
26. Calcium phosphate apatites with variable Ca/P atomic ratio III. Mechanical properties and degradation in solution of hot pressed ceramics10.1016/S0142-9612(01)00220-4 ↗
27. Microwave sintering of fine grained HAP and HAP/TCP bioceramics10.1016/j.ceramint.2009.09.038 ↗
28. Fabrication of transparent hydroxyapatite and application to bone marrow derived cell/ hydroxyapatite interaction observation in-vivo10.1007/BF00122014 ↗
29. A review of the mechanical behavior of Ca/P and CaP/polymer composites for applications in bone replacement and repair10.1016/j.actbio.2010.07.012 ↗