Electromechanical Properties of Robocasted Barium Titanate Ceramics

被引:14
作者
Lorenz, Mylena [1 ]
Martin, Alexander [1 ]
Webber, Kyle G. [1 ]
Travitzky, Nahum [1 ,2 ]
机构
[1] Friedrich Alexander Univ Erlangen Nurnberg FAU, Dept Mat Sci & Engn, Martensstr 5, D-91058 Erlangen, Germany
[2] Natl Res Tomsk Polytech Univ, Div Mat Sci, Lenin Ave 30, Tomsk 634050, Russia
关键词
3D printing; cold isostatic pressing; electromechanical transducer; piezoelectric coefficient; robocasting; TEMPLATED-GRAIN-GROWTH; DIELECTRIC-PROPERTIES; PIEZOELECTRIC PROPERTIES; BATIO3; CERAMICS; TEMPERATURE; FABRICATION; DEPENDENCE; PRESSURE; POROSITY; STRESS;
D O I
10.1002/adem.202000325
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This work presents the fabrication of dense polycrystalline barium titanate (BaTiO3, BT) for electromechanical transduction using robocasting and cold isostatic pressing (CIP). The use of CIP as post-treatment is proposed to eliminate defects and increase the density of robocasted parts to improve the piezoelectric performance. For robocasting, pastes containing 50 and 52 vol% are developed; the resulting green robocasted parts are CIPed at 100 and 150 MPa. Using this proposed technique, samples robocasted with BT52 and CIPed at 150 MPa display a relative density of approximate to 98%, comparable with reference polycrystalline samples. In addition, an increase in both the piezoelectric charge and voltage coefficient is observed in robocasted parts, with the values up to 195 pC/N and 12 x 10(-3) Vm N-1, respectively. These values, which are comparable with previous studies of polycrystalline BT, indicate that the combined robocasting and CIP technique is a possible method for producing 3D printed piezoelectric sensors.
引用
收藏
页数:10
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