Towards Lead-Free Piezoceramics: Facing a Synthesis Challenge

Materials

Mar໚ Elena Villafuerte-Castrejón³  Emilio Morán¹  Armando Reyes-Montero³  Rodrigo Vivar-Ocampo³  Jesús-Alejandro Pe༚-Jiménez³  Salvador-Oliver Rea-López³  Lorena Pardo² 

[1] Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense, Madrid 28040, Spain;Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Sor Juana Inés de la Cruz, 3. Cantoblanco, Madrid 28049, Spain;Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior S/N, A.P, México D.F. 70-360, Mexico;

关键词: synthesis;    sintering;    lead-free;    BT;    BCZT;    BNT;    KNN;    ceramics;    ferroelectricity;    piezoelectricity;   

DOI  :  10.3390/ma9010021

来源: mdpi

【 摘 要 】

The search for electroceramic materials with enhanced ferro-pyro-piezoelectric properties and revealing the perovskite type structure has been the objective of a significant number of manuscripts reported in the literature. This has been usually carried out by proposing the synthesis and processing of new compounds and solid solution series. In this work, several methods to obtain ferro-pyro-piezoelectric families of materials featuring the well-known ABO₃ perovskite structure (or related) such as BaTiO₃, Ba_1–xCa_xTi_1–yZr_yO₃, (Bi_0.5Na_0.5)TiO₃, (K_0.5Na_0.5)NbO₃ and their solid solutions with different cations either in the A or B positions, are presented. For this kind of materials, the challenge for obtaining a single phase compound with a specific grain size and morphology and, most importantly, with the adequate stoichiometry, will also be discussed. The results reviewed herein will be discussed in terms of the tendency of working with softer conditions, i.e., lower temperature and shorter reaction times, also referred to as soft-chemistry.

【 授权许可】

CC BY   
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