Pyroelectric Composite Film for X-ray Intensity Detection

被引：3
|
作者：
Sakamoto, Walter Katsumi [1 ]
Estevam, Giuliano Pierre [2 ]
de Carvalho, Aparecido Augusto [3 ]
Pontes, Wesley [2 ]
de Paula, Mauro Henrique [4 ]
机构：
[1] Univ Estadual Paulista UNESP, Grp Polimeros, Dept Quim & Fis, Fac Engn, BR-15385000 Ilha Solteira, Sp, Brazil
[2] Fac Tecnol FATEC Aracatuba, BR-16052045 Aracatuba, SP, Brazil
[3] Univ Estadual Paulista UNESP, Dept Engn Eletr, Fac Engn, BR-15385000 Ilha Solteira, SP, Brazil
[4] Univ Fed Mato Grosso Sul UFMS, Dept Fis, BR-79070900 Campo Grande, MS, Brazil
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2012年 / 15卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
composite; pyroelectricity; X-ray radiation sensor; RADIATION;
D O I：
10.1590/S1516-14392012005000030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Composite material obtained with modified lead titanate (Pz34) ferroelectric ceramic and polyether-ether-ketone (PEEK) polymer matrix was used as sensitive component to measure X-ray intensity in a novel detection system. The sensing element works as a thermal transducer, converting a non-quantified thermal flux into an output measurable quantity of electrical voltage. The samples were obtained up to 60 vol.% of ceramic, by hot pressing the mixture of Pz34 and PEEK powders at 368 degrees C and applying 12 MPa pressure for 2.0 hours. The sensor response varies from 2.70 to 0.80 V in the energy fluence rate range of 6.30 to 37.20 W.m(-2). The absorbed incident energy was analyzed as a function of the ionizing energy. Furthermore, by measuring the pyroelectric activity of the composite film it was observed that there is no degradation of the sensor after the irradiation.
引用
收藏
页码：198 / 203
页数：6
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