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Enhanced pyroelectric properties in (Bi0.5Na0.5)TiO3–BiAlO3–NaNbO3 ternary system lead‐free ceramics
10.1111/jace.15568 2018-04-17 High pyroelectric performance and good thermal stability of pyroelectric materials are desirable for the application of infrared thermal detectors. In this work, enhanced pyroelectric properties were achieved in a new ternary (1−x)(0.98(Bi0.5Na0.5)(Ti0.995Mn0... |
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Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies
10.1111/jace.15583 2018-04-17 Understanding Li‐ion migration mechanisms and enhancing Li‐ion transport in Li2ZrO3 (LZO) is important to its role as solid absorbent for reversible CO2 capture at elevated temperatures, as ceramic breeder in nuclear reactors, and as electrode coating in high... |
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Thermally reduced rGO‐wrapped CoP/Co2P hybrid microflower as an electrocatalyst for hydrogen evolution reaction
10.1111/jace.15581 2018-04-17 Cobalt phosphides (CoPx) are potential candidates for use as high‐efficiency hydrogen evolution reaction electrocatalysts that can replace noble metals, such as Pt. Typically, CoPx can be synthesized by phosphidation with Co‐based precursors such as oxides or... |
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Solidification of welded SiC–ZrB2–ZrC ceramics
10.1111/jace.15570 2018-04-14 A silicon carbide‐based ceramic, containing 50 vol% SiC, 35 vol% ZrB2, and 15 vol% ZrC was plasma arc welded to produce continuous fusion joints with varying penetration depth. The parent material was preheated to 1450°C and arc welding was successfully imple... |
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Microstructural evolution of amorphous Si2BC3N nanopowders upon heating at high temperatures: High pressures reverse the nucleation order of SiC and BN(C)
10.1111/jace.15566 2018-04-14 Amorphous Si2BC3N nanopowders (NPs) were heated at 1000‐1700°C temperatures for 30 minutes in 1 atm N2. The changes in phases, chemical bonds, and microstructures were investigated by XRD, XPS, NMR, TEM, and first‐principles calculation. Increases in heating ... |
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Mid‐IR transparent TeO2‐TiO2‐La2O3 glass and its crystallization behavior for photonic applications
10.1111/jace.15558 2018-04-14 In this report, effect of enhanced rare earth (La2O3) concentration on substitution of TeO2 within ternary TeO2‐TiO2‐La2O3 (TTL) glass system has been studied with respect to its thermal, structural, mechanical, optical, and crystallization properties with an... |
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Synthesis of GAGG:Ce3+ powder for ceramics using mechanochemical and solution combustion methods
10.1111/jace.15563 2018-04-14 Gadolinium aluminum gallium garnet doped with cerium (Gd2.99Al2.00Ga3.00O12.00:Ce0.01, or GAGG:Ce) powders has been synthesized with high‐energy ball milling (HEBM) and solution combustion synthesis (SCS) techniques. The structures and morphologies of the pow... |
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Improving piezoelectric properties and temperature stability for KNN‐based ceramics sintered in a reducing atmosphere
10.1111/jace.15584 2018-04-10 Lead‐free 0.955K0.5Na0.5Nb1‐zTazO3‐0.045Bi0.5Na0.5ZrO3+0.4%MnO ceramics (abbreviated as KNNTaz‐0.045BNZ+0.4Mn) were prepared by a conventional solid‐state sintering method in a reducing atmosphere (oxygen partial pressure of 1×10‐10 atm). All ceramics with a ... |
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Microstructure and Thermal Conductivity of Fully Ceramic Microencapsulated Fuel Fabricated by Spark Plasma Sintering
10.1111/jace.15585 2018-04-10 Fully ceramic microencapsulated pellet (FCM), consisting of tristructural isotropic (TRISO) particles embedded in silicon carbide (SiC) matrix, was fabricated using spark plasma sintering. The parameters affecting the densification of SiC matrix were first in... |
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Creep and Relaxation of Cement Paste Caused by Stress‐induced Dissolution of Hydrated Solid Components
10.1111/jace.15587 2018-04-10 The creep and relaxation of cement paste caused by dissolving solid hydration products is evaluated in this work. According to the second law of thermodynamics, dissolution or precipitation of solid constituents may be altered by the change of stress/strain f... |