Microstructure and mechanical properties of the spark plasma sintered Ta2C ceramics

ζ‐Ta4C3−x: A High Fracture Toughness Carbide with Rising‐Crack‐Growth‐Resistance (R‐Curve) Behavior

“…The tantalum carbides also offer a range of mechanical properties. Most of the data reported in the literature were obtained on hot‐isostatically pressed (HIP), hot‐pressed or spark‐plasma‐sintered materials. Alexandre et al .…”

“…suggested that tantalum carbides containing predominantly the ζ‐Ta 4 C 3 − x phase have exceptionally high fracture toughness. This result has been confirmed recently by Liu et al . They spark‐plasma‐sintered mixtures of γ‐TaC and Ta corresponding to a C/Ta at.…”

Graphene NanoPlatelets Reinforced Tantalum Carbide consolidated by Spark Plasma Sintering

“…One UHTC material whose fracture toughness has been improved by modification of the microstructure is Ta 2 C. Ta 2 C grain sizes and shapes are dependent on processing temperatures and methods which will be discussed in detail in the subsequent section. Ta 2 C processed at 1700 ˚C shows elongated grains which leads to some anisotropic behavior but more importantly it provides a self-toughening effect [32]. Ta 2 C with elongated grains had a flexure strength (548 MPa) that was higher than a Ta 2 C sample (507 MPa) with comparable densification and porosity levels but equiaxed grains.…”

“…SPS has very high heating and cooling rates which minimizes grain growth while still leading to high density compacts. Several studies have shown SPS having great potential for efficient consolidation of UHTCs [32,46,[67][68][69]. Mechanisms, advantages, and disadvantages of SPS will be discussed in detail in a later section of this thesis as its importance merits a more in depth discussion.…”

Effect of TiC coated MWCNT content on friction and wear behavior of MWCNT–Ti3SiC2 composites

“…In order to obtain a clean matrix/ reinforcement interface and improve the bonding strength between MWCNTs and Ti 3 SiC 2 matrix, as well as realize the stability of MWCNTs during the fabricated process of the composites, TiC coating on the surface of MWCNTs prepared by vacuum slow vapor deposition process was used as coupling agents, which could lead to better improvement in mechanical properties and tribological properties of MWCNT-Ti 3 SiC 2 composites. Compared with the traditional powder metallurgy techniques, the main advantages of spark plasma sintering (SPS) are the fast heating speed and cooling speed, short sintering time, fine grain size of the prepared materials, controlled organizational structure, energy saving and environmental protection and so on [20][21][22].…”