Dielectric, mechanical, and microstructural characterization of HA–BST composites

Autor:	Suchittra Inthong, Kamonpan Pengpat, Tawee Tunkasiri, Sukum Eitssayeam, Chatchai Kruea-In, Uraiwan Intatha, Gobwute Rujijanagul
Rok vydání:	2015
Předmět:	Materials science Process Chemistry and Technology Composite number Biomaterial Modulus Dielectric Microstructure Grain size Surfaces Coatings and Films Electronic Optical and Magnetic Materials Fracture toughness Vickers hardness test Materials Chemistry Ceramics and Composites Composite material
Zdroj:	Ceramics International. 41:S481-S486
ISSN:	0272-8842
DOI:	10.1016/j.ceramint.2015.03.205
Popis:	Hydroxyapatite (HA) is an excellent inorganic biomaterial and has various applications because its structure is similar to the inorganic matrix of human bone and dental enamel. In this present study, the HA–(Ba0.7Sr0.3)TiO3; HA–BST composites were synthesized by a solid state reaction technique. The phase, densification, microstructure, mechanical and dielectric properties of HA–BST composites sintered at 1350 °C were investigated. The HA–BST composite showed an increase in densification, Vickers hardness, Young׳s modulus and fracture toughness with maximum value as 3.42 g/cm3, 5.01 GPa, 161.70 GPa, and 1.48 MPa m1/2, respectively. The average grain size was decreased from 12.09 μm for a reference HA sample to 1.14 μm for the 30 wt% BST in HA–BST composites. The dielectric constant as a function of temperature and frequency tend to increase with increasing BST contents.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1efa66ff00d4e1cec5d11f6073bca9cd https://doi.org/10.1016/j.ceramint.2015.03.205 Zobrazit plný text záznamu Full Text from ScienceDirect