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Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique

10.1016/j.jeurceramsoc.2018.04.017

2018-04-10

Al2O3/Y3Al5O12(YAG) directionally solidified eutectic (DSE) crystal was prepared by optical floating zone technique. Al2O3/YAG DSE consists of continuous entangled Al2O3 and the YAG forming a three-dimensional networks structure. The volume fraction of porosi...

High-Entropy Fluorite Oxides

10.1016/j.jeurceramsoc.2018.04.010

2018-04-09

Eleven fluorite oxides with five principal cations (in addition to a four-principal-cation (Hf0.25Zr0.25Ce0.25Y0.25)O2-δ as a start point and baseline) were fabricated via high-energy ball milling, spark plasma sintering, and annealing in air. Eight of the co...

THE EFFECT OF ZIRCONIA SUBSTITUTION ON THE HIGH-TEMPERATURE TRANSFORMATION OF THE MONOCLINIC-PRIME PHASE IN YTTRIUM TANTALATE

10.1016/j.jeurceramsoc.2018.04.002

2018-04-06

Amorphous yttrium tantalate, as well as solid solutions containing zirconia, transform on heating to a monoclinic-prime phase and then, with further heating, to a crystalline tetragonal (T) solid solution phase at ~ 1450 °C. On subsequent cooling the tetragon...

Study on the copper and iron coexisted coloring glaze and the mechanism of the fambe

10.1016/j.jeurceramsoc.2018.04.004

2018-04-06

With copper and iron oxides as colorants, reddish and bluish purple glazes were prepared by changing the raw material ratio at the same firing schedule. Based on the primary factor experiments and the analyses of XRF and SEM/EDS, the fambe mechanism was propo...

Piezoresponse and Microstructure of BaTaO2N Ceramics

10.1016/j.jeurceramsoc.2018.04.001

2018-04-03

Piezoresponse force microscopy was conducted on a polished slice of the perovskite oxynitride ceramic BaTaO2N after ammonolysis at a bias voltage of ±10 V. The ceramic surface was relatively porous because it was readily hydrolyzed by ambient humidity. While ...

Innovative Method to Produce Large-Area Freestanding Functional Ceramic Foils

10.1016/j.jeurceramsoc.2018.03.051

2018-03-31

Using thick and thin films instead of bulk functional materials presents tremendous advantages in the field of flexible electronics and component miniaturization. Here, a low-cost method to grow and release large-area, microscale thickness, freestanding, func...

Total hemispherical emissivity of sintered SiC up to 1850 K in high vacuum and in air at different pressures

10.1016/j.jeurceramsoc.2018.03.050

2018-03-31

The total (0.6-40 µm) hemispherical emissivity of sintered silicon carbide samples was measured in different conditions of pressure and temperature, from high vacuum to atmospheric pressure in air and up to 1850 K using a direct method. Emissivity data are co...

Investigation on low-temperature sinterable behavior and tunable dielectric properties of BLMT glass-Li2ZnTi3O8 composite ceramics

10.1016/j.jeurceramsoc.2018.03.053

2018-03-31

The novel low-temperature sinterable ceramic composites were fabricated by mixing B2O3-La2O3-MgO-TiO2 (BLMT) glass with Li2ZnTi3O8 ceramic. All composites could be well sintered at 900 °C for 2 h through liquid-phase sintering and viscous sintering process. W...

In-situ TEM study of the aging micromechanisms in a BaTiO3-based lead-free piezoelectric ceramic

10.1016/j.jeurceramsoc.2018.03.049

2018-03-30

Aging and fatigue are the two main concerns regarding the performance reliability of piezoelectric ceramics. Compared with fatigue, less efforts have been made towards clarifying the micromechanisms of aging. In this report, we employ electric field in-situ t...

Electrophoretically deposited halloysite nanotubes coating as the adsorbent for the removal of methylene blue from aqueous solution

10.1016/j.jeurceramsoc.2018.03.048

2018-03-28

Halloysite nanotubes (HNTs) coatings were prepared by electrophoretic deposition (EPD) from different alcoholic suspensions using polyethyleneimine (PEI) as the dispersant. The results of conductivity, zeta potential, FTIR and thermal analysis showed that PEI...