Structural and morphological study of mechanochemically synthesized crystalline nanoneedles of Zr-doped carbonated chlorapatite

Nasiri-Tabrizi, B. and Zalnezhad, E. and Pingguan-Murphy, Belinda and Basirun, Wan Jefrey and Hamouda, A.M.S. and Baradaran, S. (2015) Structural and morphological study of mechanochemically synthesized crystalline nanoneedles of Zr-doped carbonated chlorapatite. Materials Letters, 149. pp. 100-104. ISSN 0167-577X

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Abstract

Nanosize Zr-doped carbonated chlorapatite (n-ZCCA) was developed as a novel bioceramic by a ball milling process. Results showed that the microstructural characteristics of the product were affected significantly by the degree of substitution and subsequent annealing at 800 degrees C for 1 h. In the absence of zirconium, mechanical activation for 3 h resulted in the formation of carbonated hydroxyapatite (CHA). With the addition of various amounts of zirconium, nanosize Zr-doped carbonated chlorhydroxyapatite (n-ZCCHA) and n-ZCCA were formed as a result of progressive mechanochemical reactions. From the HR-TEM images, the preferential substitution of Zr onto the ac or bc chlorapatite crystal facets (rich in calcium ions) led to a c-axis oriented crystal growth of crystalline nanoneedles with an average size of around 40-60 nm in length and 10-20 nm in width. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Article
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Uncontrolled Keywords: Biomaterials, powder technology, phase transformation, nanoneedles, hydroxyapatite, bioceramics, composites,
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 25 Apr 2016 03:20
Last Modified: 31 Jan 2019 07:28
URI: http://eprints.um.edu.my/id/eprint/15831

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