Low temperature sintering of ZrC–SiC composite

Corrosion behavior of ZrC–SiC composite ceramics in LiF–NaF–KF molten salt at high temperatures

“…O in molten FLiNaK salt partially escaped as NO 2 and as oxide adhered in ceramics. This result indicated that the O (such as NO 3 À and H 2 O) content in molten FLiNaK salt participated in corrosion of ceramic samples. We can infer that corrosion may be mainly caused by the reaction of ZrC with oxidizing substances or impurities, particularly NO 3 À .…”

“…However, the poor chemical stability of ZrC at high temperatures in oxidizing atmosphere significantly limits its actual application [1,2]. A common approach to improve oxidation resistance is by incorporating Si-containing compounds into the ZrC matrix to form a protective SiO 2 -containing oxide scale [3][4][5]. Zhao et al prepared composites comprising ZrC and 30 vol% silicon carbide (SiC) [4].…”

“…The protective effect of the oxide scales is enhanced by the formed SiO 2 [4]. ZrC-SiC composites can generate high-performance ceramics; these composites demonstrate the passivating characteristic of SiC and the high melting temperature, hardness, and thermal stability of ZrC [3][4][5]. ZrC-SiC composites are broadly applied under extreme conditions and can be potentially use in fluoride salts because of their good thermomechanical properties, irradiation resistance, and chemical stability at high temperatures [2,6,7].…”

Syntheses of ZrC–SiC nanopowder via sol–gel method

“…Conventionally, ZrC-SiC composite ceramics are prepared by sintering of nano-/micro-sized ZrC and SiC powder mixtures [13][14][15]. However, due to the challenges of dispersing powders uniformly, sintered composites with non-uniform micro-structures are usually acquired [16].…”

Thermomechanical properties of a spark plasma sintered ZrC–SiC composite obtained by a precursor derived ceramic route

“…Gendre et al [14] have also sintered ZrC ceramics with mean grain size of 5 mm and Young's modulus around 420 GPa depending on stoichiometry. On the other hand by addition of SiC, Zhao et al [10] have obtained by reactive SPS a ZrC-18.4 wt% SiC composite with mean grain size of 1 mm. The measured Vickers hardness of 19 71 GPa is similar to that of ZrC monolith [13,15].…”