Microstructural investigation of spark plasma sintered TiB2 ceramics with Si3N4 addition

The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

“…Spark Plasma Sintering (SPS) has been successfully used for the densification of a wide variety of materials (ceramic [1,2], metals and alloys [3,4], polymer and composites [5,6]). Balázsi et al [7] used as first SPS to realize nanostructured steel compacts.…”

Mechanical Properties of WC-Si3N4 Composites With Ultrafine Porous Boron Nitride Nanofiber Additive

“…WC-Si 3 N 4 bulks after ball milling and sintering are too crude to meet the requirements. In addition, although some BN phases like BN nanoplates observed were reported (Ahmadi et al, 2017;Germi et al, 2018;Mahaseni et al, 2018), the turbostratic structure and pore leading to bad contrast hindered the intention of observation for UPBNNF in this case.…”

“…By contrast, the synergic mechanism is not consistent with traditional ceramic-ceramic toughening theory. According to the traditional toughening model, weak interfacial bonding between non-binder second phases and the matrix is beneficial due to the fragile second phases without toughening effects in complex stress environments (Mahaseni et al, 2018). Energy is consumed by debonding, interfacial friction, and so on.…”

Review and Perspectives of Electrochemical Energy Conversion and Storage in Metal Diborides and XBenes

“…35−38 The space geometry of these diborides is P6/mmm, which imparts to them unique physicochemical properties that are different from other borides. 39 These properties include high melting point (∼3020 °C for TiB 2 ), 40 high hardness (∼23 GPa for ZrB 2 ), 41 good electrical conductivity (∼1500 S/cm for TiB 2 ), 42 high thermal conductivity (∼125 W/mK for ZrB 2 ), 41,43 increasing interest in transition metal diboride materials for electrochemical applications due to their high electrical conductivity, high surface area, and good chemical stability.…”

“…AlB 2 -type metal borides are primarily layered materials where boron planes are stitched together by metal atoms, constituting a mixture of covalent and ionic bonding. − Owing to their strong covalent bonding in M–B and B–B bonds, metal diborides offer higher chemical and thermal durability for electrochemical activities than conventional metal nitrides and carbides. − The space geometry of these diborides is P 6/ mmm , which imparts to them unique physicochemical properties that are different from other borides . These properties include high melting point (∼3020 °C for TiB 2 ), high hardness (∼23 GPa for ZrB 2 ), good electrical conductivity (∼1500 S/cm for TiB 2 ), high thermal conductivity (∼125 W/mK for ZrB 2 ), , and chemical inertness. Recent years have seen an increasing interest in transition metal diboride materials for electrochemical applications due to their high electrical conductivity, high surface area, and good chemical stability.…”