4.7 Article

Piezoelectric and mechanical properties of hydroxyapatite/titanium oxide composites

期刊

CERAMICS INTERNATIONAL
卷 48, 期 16, 页码 23096-23103

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.04.289

关键词

Composites; Piezoelectric properties; Apatite; Titanium dioxide; Biomedical applications

资金

  1. CONACyT [851804]
  2. Vicerrectoria de Investigacion y Estudios de Posgrado (VIEP) [100524279-VIEP2021]
  3. LAAAMP (Lightsources for Africa, the Americas, Asia, Middle East, and Pacific)

向作者/读者索取更多资源

This study reports the synthesis of HAp/TiO2 composites using sol-gel and co-precipitation methods, and characterizes their structure using XRD and STXM techniques. The results show that the mixture of phases in the two materials can be identified separately once the composite is formed.
Hydroxyapatite (HAp) is the most common bioactive ceramic used to replace hard tissue in the body. Because of its low resistance and fragile nature, more attention is being given to composites based on HAp such as HAp/TiO2 composites. This study aims at reporting the synthesis of HAp/TiO2 composites (hereafter named HT composite) by sol-gel and co-precipitation methods assisted by ultrasonic radiation. The structural characterization was carried out by X-ray Diffraction (XRD) and Scanning Transmission X-ray Microscopy (STXM) techniques using synchrotron radiation, which allowed a mixture of phases to be identified separately in the two materials once the composite was formed. A Rietveld refinement for XRD data determined the phase percentage and structural parameters obtained for each material. In addition, crystallite size using the modified Scherrer equation was determined. A piezoelectric character of the two materials was confirmed by Piezoresponse Force Microscopy (PFM) to determine the piezoelectric coefficient (deff). Finally, PinPoint-AFM force curves confirmed an increase in the Young's modulus value for the HT composite.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据