Microstructural evolution and kinetics analysis of aluminum borate ceramics via solid‐state reaction synthesis

Abstract

Aluminum borate ceramics (ABCs) with a skeleton structure of rod-like crystals were established via a solid-state reaction synthesis. The influence of heat treatment systems on the phase composition and microstructural evolution of an anisotropic grain were firstly studied. Next, the impact of boric acid content on the activation energy of reaction, microstructure, mechanical properties, and neutron shielding

Partially stabilized zirconia (3Y-ZrO2) aluminum borate (Al18B4O33) needles composite materials by direct sintering

“…Measured porosity is ascribed mainly to the space present between needles and the rounded zirconia grains. The needle thickness was relatively homogeneous for both materials, being this morphology consistent with what was previously reported for aluminum borates [16,20,[27][28][29][30] and with the presence of borate observed by XRD. No important difference can be observed between the studied samples.…”

“…On the other side, Aluminum borate (AB: Al 18 B 4 O 33 ) present high refractoriness up to 1300 °C, accompanied by chemical inertness in some specific environments [14][15][16], with adequate thermo-mechanical behavior for several applications that include alloy reinforcement phase [14].…”

“…The catalytic properties of AB for some technological reactions are also remarkable [17][18][19]. Its low density, in comparison with other similar structural ceramics such as alumina, zircon, zirconia and mullite, is one of the principal merits [16,20].…”

Thermally insulating GdBO3 ceramics with neutron shielding performance

“…Luo et al. prepared aluminum borate ceramics by solid‐phase method and indicated the influence of sample thickness and pore on NSP 6 . Wu et al.…”

“…Luo et al prepared aluminum borate ceramics by solid-phase method and indicated the influence of sample thickness and pore on NSP. 6 Wu et al synthesized lead borate nanowhiskers by a facile solvothermal method and showed that it can improve the shielding properties of composites. 7 However, it should be noted that B has a relatively low thermal neutron absorption cross-section, and the toxicity of Pb can harm humans and environment.…”