Effect of NiO additive on microstructure, mechanical behavior and electrical properties of 0.2PZN–0.8PZT ceramics

Synthesis and characterizations of NaNbO3 modified BNT–BT–BKT ceramics for energy storage applications

“…1(b), consists of two tetragonal, (200) and (002), and one rhombohedral (200) peak. Based on integral intensities (I), tetragonal phase (T.P) and rhombohedral phase (R.P) fractions are calculated using the following relations [15]: Lattice parameters along with phase fractions of rhombohedral and tetragonal structures are listed in the (Table 1). Both the phases exist in all the samples, which confirm the morphotrophic phase boundary (MPB) nature of these samples.…”

Catalysis of nickel acetylacetonate in thermal cure and ceramization of SiC preceramic resin

“…While considering the presence of a small volume fraction of nickel liquid during ceramization, the well distributed nickel liquid flows preferentially into the nearest pores surrounded by ceramic powders, generating an attractive capillary force that tends to bring the particles together [34]. For ceramic powders with different sizes, Laplace force difference will drive ceramic components (SiC and some free carbon) to migrate from small powders to large powders through the nickel liquid by the mechanism of dissolution-and-precipitation; the re-precipitation and crystallization at the surfaces of big powders led to higher crystallinity together with the gradually growing size [35,36]. Due to liquid nickel wettability and components migration, catalytic ceramization was realized in thermal pyrolysis of PSI precursors.…”

Effect of MnO2 doping on piezoelectric, dielectric and ferroelectric properties of PNN–PZT ceramics

“…Solid solutions of lead zirconate titanate (PZT) and complex lead-based ferroelectric materials are widely used in electromechanical devices owing to their excellent dielectric and piezoelectric properties [1][2][3][4][5][6][7], including multilayer capacitors, piezoelectric actuators, sensors, and acoustic transducers. Leadbased relaxor ferroelectrics have a general formula of Pb(B 0 B″)O 3 (where B 0 represents Mg 2 þ , Ni 2 þ , Zn 2 þ , Fe 3 þ , Sc 3 þ , In 3 þ , Mn 4 þ , or Sn 4 þ ; and B″ represents Nb 5 þ , Ta 5 þ , Sb 5 þ , or W 6 þ ) [8,9].…”

“…Gao et al [18] investigated Ce, Eu and Yb modified 0.90 Pb(Zr 0.52 Ti 0.48 )O 3 -0.10 Pb(Sb 2/3 Mn 1/3 )O 3 ceramics, and found that the modification resulted in significantly enhanced mechanical quality factors. Zheng et al [6] studied NiO-added 0.20Pb(Zn 1/3 Nb 2/3 ) O 3 -0.80Pb(Zr 0.5 Ti 0.5 )O 3 ceramics, and found that Ni doping induced a phase transformation from the morphotropic phase boundary to the tetragonal phase side. Mupeng Zheng et al [19] found that NiO introduction into 0.12Pb(Ni 1/3 Nb 2/3 )O 3 -0.08Pb (Zn 1/3 Nb 2/3 )O 3 -0.4PbZrO 3 -0.4PbTiO 3 induced a phase transformation from the morphotropic phase boundary (MPB) to the tetragonal phase side.…”