Comparative study of B4C, Mg2B2O5, and ZrB2 powder additions on the mechanical properties, oxidation, and slag corrosion resistance of MgO–C refractories

Enhanced oxidation resistance of low‐carbon MgO–C refractories with Al3BC3–Al antioxidants: A synergistic effect

“…≈ 79%). This high extent of reduction in oxidative damage directly indicated the improvement in oxidation resistance of the specimen 18,22,29,31,34 Compared with the reported typical oxidation data of MgO-C refractories, [22][23]35,36 as shown in Table 3, the oxidation resistance of low-carbon MgO-C refractories fabricated with Al 3 BC 3 -Al additions was considerably good or better than most of carbon-containing refractories fabricated with various additives. Particularly, the oxidation resistance of MgO-Al 3 BC 3 -Al-C refractories is much better than that of MgO-C refractories fabricated with the combination of Ti 3 AlC 2 -Si or single Al 8 B 4 C 7 .…”

“…1,9 Extensive studies on the oxidation protection of MgO-C refractories have been conducted, such as the modification of binders or carbon source, [10][11][12][13] the introduction of ceramic reinforcing phase, [14][15][16][17] and the addition of antioxidant. [18][19][20] The most acceptable and effective approach is the usage of antioxidant in the form of metal powders, alloys, carbides, borides, and even oxides. 7,8,9,[18][19][20][21][22][23] Ternary carbides have outstanding properties for high-temperature applications, such as low density, high strength, low thermal expansion coefficient, high resistance to thermal shock, good thermal conductivity, and hydration resistance.…”

“…[18][19][20] The most acceptable and effective approach is the usage of antioxidant in the form of metal powders, alloys, carbides, borides, and even oxides. 7,8,9,[18][19][20][21][22][23] Ternary carbides have outstanding properties for high-temperature applications, such as low density, high strength, low thermal expansion coefficient, high resistance to thermal shock, good thermal conductivity, and hydration resistance. [24][25][26][27][28][29][30][31] Considerable research efforts have been performed to develop alternative antioxidants with optimized properties and less drawbacks, and the exploration and application of single ternary carbide, such as Al 4 O 4 C, "Al 8 B 4 C 7 ," Al 4 SiC 4 , Ti 3 AlC 2 , and Ti 3 SiC 2 , have been proved to have benefits.…”

Optimized Mechanical Properties and Oxidation Resistance of Al2O3-B4C-C Refractory Ceramics

“…Many researches indicated that boron-containing additives were very effective against oxidation. Liu et al [6] found that B4C was most effective antioxidant in MgO-C bricks when compared with ZrB2 and Mg2B2O5. Wu et al [7] reported that the most effective antioxidant in MgO-C bricks at 1500 °C was B4C when compared with Si and Al due to the formation of impermeable dense Mg3B3O6 layer.…”

Effect of different boron-containing additives on the oxidation resistance of carbon–bonded magnesia bricks

“…In a previous work, we studied the effects of a higher content of boron-containing additives on the mechanical properties, oxidation resistance, and slag corrosion resistance of carbon-bonded magnesia bricks [16]. From the point of view of cost savings, in the present study, the addition amounts of three boron-containing additives, namely B 4 C, Mg 2 B 2 O 5 , and ZrB 2 , in carbon-bonded magnesia bricks were reduced to 0.5, 2, and 2 wt%, respectively.…”