Structural evolution, dielectric and ferroelectric properties of (1-x)Bi0.5Na0.5TiO3-xBa0.3Sr0.7TiO3 ceramics

Li, Dongxu; Shen, Zong–Yang; Li, Zhipeng; Wang, Xingcai; Luo, Wen–Qin; Song, Fang; Wang, Zhumei; Li, Yueming

doi:10.1007/s10854-019-00890-4

Cited by 13 publications

(7 citation statements)

References 20 publications

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“…Consequently, the obvious discrepancy of the WHR might come from retained austenite stability modulated by the intercritical annealing process. [ 27 ]…”

Section: Resultsmentioning

confidence: 99%

“…It is known that the mechanical properties are attributed to not only V RA [ 27 ] but also its stability, [ 29–31 ] and the common conception is that the austenite stability is relative to chemical composition, [ 31 ] grain size, [ 29 ] morphology, [ 30 ] etc., which is usually illustrated by stacking fault energy (SFE). In this study, we calculated the SFE of 16 mJ m −2 of the investigated steels at 750 °C based on the Olson–Cohen's thermodynamic model, [ 32 ] and the formulae are shown in Equation (1) and (2).…”

Section: Resultsmentioning

confidence: 99%

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Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Huang

Wang

et al. 2021

steel research int.

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The microstructures and mechanical properties of Fe–0.35C–3.2Al–5Mn (in wt%, same later) hot‐rolled medium‐manganese steels are systematically investigated. The results show that ultrafine‐grained duplex phases with bimodal morphologies of lath and equiaxed are obtained with intercritical annealing at 750 °C for 1 h, along with ultimate tensile strength of 950 MPa and total elongation of 71.2%, attributed to the dislocation slip and deformation of ferrite matrix, accompanied by the synergetic twinning of retained austenite plus transformation of retained austenite to martensite. The newly developed medium‐manganese steels, which exhibit an excellent product of ultimate tensile strength and total elongation of 67.6 GPa·%, demonstrate great practical applications.

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“…Consequently, the obvious discrepancy of the WHR might come from retained austenite stability modulated by the intercritical annealing process. [ 27 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Huang

Wang

et al. 2021

steel research int.

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“…[29][30][31] In our previous work, we used Ba 0.3 Sr 0.7 TiO 3 (BST) and Bi 0.5 Na 0.5 TiO 3 (BNT) as end-members to construct a solid solution, and an optimized composition (Bi 0.5 Na 0.5 ) 0.65 (Ba 0.3 Sr 0.7 ) 0.35 TiO 3 (BNBST) was obtained potential for energy storage applications. 32,33 Recently, we further used rare earth ion Ce 4+ to modify BNBST. B-site Ce 4+ doping, on the one hand, can effectively reduce the dielectric peak, and on the other hand, can make the temperature corresponding to the dielectric peak (T m ) gradually shifting to lower region.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work, we used Ba 0.3 Sr 0.7 TiO 3 (BST) and Bi 0.5 Na 0.5 TiO 3 (BNT) as end‐members to construct a solid solution, and an optimized composition (Bi 0.5 Na 0.5 ) 0.65 (Ba 0.3 Sr 0.7 ) 0.35 TiO 3 (BNBST) was obtained potential for energy storage applications 32,33 . Recently, we further used rare earth ion Ce 4+ to modify BNBST.…”

Section: Introductionmentioning

confidence: 99%

Boosting dielectric temperature stability in BNBST‐based energy storage ceramics by Nb₂O₅ modification

et al. 2023

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Exploring environment-friendly energy storage ceramics simultaneously featuring large recoverable energy storage density (W rec ), high-energy storage efficiency (ƞ), and excellent temperature stability is highly desirable for the application of pulsed power systems. Herein, Nb 2 O 5 was introduced to modify BNBST-based lead-free relaxor ferroelectric ceramics in an effort to enhance the dielectric temperature stability. (Bi 0.5 Na 0.5 ) 0.65 (Ba 0.3 Sr 0.7 ) 0.35 (Ti 0.98 Ce 0.02 )O 3 (BNBSTC) + x wt%Nb 2 O 5 (0 ≤ x ≤ 4) ceramics were prepared by a solid-state reaction method. The phase structure, microstructure, dielectric, and energy storage properties of the ceramics have been systematically studied. It was found that the ε r -T curve was flattened, and the dielectric temperature stability was effectively improved due to the addition of Nb 2 O 5 . A noticeable W rec (1.44 J/cm 3 ) with high η (84.1%) was obtained in BNBSTC + 2 wt%Nb 2 O 5 ceramics at a low electric field of 90 kV/cm, which was mainly due to a refined P-E loop induced by Nb 2 O 5 . In addition to excellent frequency and anti-fatigue cycle stability, this ceramic provides a new solution for designing pulsed power capacitors with high energy density and high temperature stability under low voltage driving conditions.

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“…Based on our previous work, a binary solid solution of (Bi 0.5 Na 0.5 ) 0.65 (Ba 0.3 Sr 0.7 ) 0.35 TiO 3 (BNT-BST) is considered as a good energy storage material due to "clamped" behavior in P-E loop and high dielectric constant e r (~4000) at room temperature [20,21]. However, its relatively high P r and poor dielectric temperature stability make it hard to obtain high W rec .…”

Section: Introductionmentioning

confidence: 99%

Remarkably Enhanced Dielectric Stability and Energy Storage Properties in BNT-BST Relaxor Ceramics by A-Site Defect Engineering for Pulsed Power Applications

Shen

et al. 2021

Preprint

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Lead-free bulk ceramics for advanced pulsed power capacitors show relatively low recoverable energy storage density (Wrec) especially at low electric field condition. To address this challenge, we proposed an A-site defect engineering to optimize the electric polarization behavior by disrupting the orderly arrangement of A-site ions, in which Ba0.105Na0.325Sr0.245−1.5xð0.5xBi0.325+xTiO3 (BNS0.245−1.5xð0.5xB0.325+xT, x = 0, 0.02, 0.04, 0.06, 0.08) lead-free ceramics were selected as the representative. The BNS0.245−1.5xð0.5xB0.325+xT ceramics were prepared by using pressureless solid state sintering and achieved large Wrec (1.8 J/cm3) at a low electric field (@110 kV/cm) when x = 0.06. The value of 1.8 J/cm3 is super high as compared to all other Wrec in lead-free bulk ceramics under a relatively low electric field (< 160 kV/cm). Furthermore, a high dielectric constant of 2930 ± 15% in a wide temperature range of 40 ~ 350°C was also obtained in BNS0.245−1.5xð0.5xB0.325+xT (x = 0.06) ceramics. The excellent performances can be attributed to the A-site defect engineering, which can reduce Pr and improve the thermal evolution of polar nanoregions (PNRs). This work confirms that the BNS0.245−1.5xð0.5xB0.325+xT (x = 0.06) ceramics are desirable for advanced pulsed power capacitors, and will push the development of a series of BNT-based ceramics with high Wrec and high temperature stability.

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Structural evolution, dielectric and ferroelectric properties of (1-x)Bi0.5Na0.5TiO3-xBa0.3Sr0.7TiO3 ceramics

Cited by 13 publications

References 20 publications

Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Boosting dielectric temperature stability in BNBST‐based energy storage ceramics by Nb₂O₅ modification

Remarkably Enhanced Dielectric Stability and Energy Storage Properties in BNT-BST Relaxor Ceramics by A-Site Defect Engineering for Pulsed Power Applications

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Structural evolution, dielectric and ferroelectric properties of (1-x)Bi0.5Na0.5TiO3-xBa0.3Sr0.7TiO3 ceramics

Cited by 13 publications

References 20 publications

Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Modulating Mechanical Properties of Fe–0.35C–3.2Al–5Mn Hot‐Rolled Steel by Combining Twinning‐Induced Plasticity plus Transformation‐Induced Plasticity Effect

Boosting dielectric temperature stability in BNBST‐based energy storage ceramics by Nb2O5 modification

Remarkably Enhanced Dielectric Stability and Energy Storage Properties in BNT-BST Relaxor Ceramics by A-Site Defect Engineering for Pulsed Power Applications

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Boosting dielectric temperature stability in BNBST‐based energy storage ceramics by Nb₂O₅ modification