Fabrication of Paper‐Derived Ti₃SiC₂‐Based Materials by Spark Plasma Sintering

Abstract

Novel paper‐derived Ti3SiC2‐based ceramics are fabricated by spark plasma sintering (SPS). A Ti3SiC2‐loaded preceramic article is used as feedstock. The sintering temperature and pressure are 1100–1200 °C and 20–50 MPa, respectively. The influence of sintering parameters on phase composition and microstructure is analyzed by X‐ray diffraction (XRD) and scanning electron microscopy, respectively. In addition, energy‐dispersive X‐ray spectroscopy is conducted to analyze the distribution of elements and the phase arrangement depending on the sintering temperature. XRD analysis of the composites sintered at 1100 and 1200 °C shows the presence of Ti3SiC2, TiC, and TiSi2 phases while the content of Ti3SiC2 phase decreases with increasing temperature. It is shown that an increase in both temperature and pressure lead to higher densification of the composites. Elongated pores are observed in the composites, which are formed as a result of cellulose fiber decomposition during the sintering process. The maximal value of the flexural strength of 300 MPa is measured for the composite with the highest density. The influence of SPS parameters on the formation of phase composition, microstructure, and mechanical properties of the paper‐derived Ti3SiC2‐based ceramics is discussed.

Structure and Properties of Porous Ti3AlC2-Doped Al2O3 Composites Obtained by Slip Casting Method for Membrane Application

“…The increase in intensities of the corresponding peaks of the Ti 3 AlC 2 phase indicates its higher volume content at a higher Ti 3 AlC 2 /Al 2 O 3 powder ratio. After sintering, the Ti 3 AlC 2 phase undergoes oxidation during sintering of Ti 3 AlC 2 /Al 2 O 3 composites ( Figure 2 c), which resulted in the formation of Al 2 TiO 5 and TiO 2 oxide phases [ 13 , 14 , 15 , 16 ]. The results of phase composition analysis are presented in Table 1 .…”

“…MAX phases are a relatively new class of nanolaminated materials, generally described as M n+1 AX n (where M—transition metal, A—element of A group (mostly IIIA and IVA), X—carbon and/or nitrogen, n = 1–3). They are also promising as support material itself or in combination with other materials for supports and membranes due to their catalytic activity and combined properties of metals and ceramics, such as high thermal and electrical conductivities, high mechanical properties, high-temperature oxidation and thermal shock resistance [ 10 , 11 , 12 , 13 , 14 ]. Ti 3 AlC 2 MAX phase and Al 2 O 3 have the near-identical coefficients of thermal expansion, and Ti 3 AlC 2 /Al 2 O 3 composites have superior spallation resistance under service conditions [ 15 ].…”

High Toughness Laminated Composites Fabricated from Ti3Al(Si)C2 Filled Preceramic Paper and Nb Foils: Formation Mechanism and Influence of Laminate Architecture

“…A detailed description of the fabrication technology of preceramic papers can be found in. [38,40] The obtained preceramic paper sheets were consisted of 7.3 wt% of cellulose fibers, 87 wt% of Ti 3 Al 0.75 Si 0.25 C 2 powder, 3 wt% of Al 2 O 3 powder and 2.7 wt% of retention additives. To obtain different architectures of laminated composites, three different "stacks" of Ti 3 Al(Si)C 2 -filled preceramic papers (TAC) and Nb foils were prepared (Figure 1).…”

Fabrication of ZnO Ceramics with Defects by Spark Plasma Sintering Method and Investigations of Their Photoelectrochemical Properties

“…The sintering methods for preparing zinc oxide ceramics include cold sintering [16][17][18], ultra-high temperature sintering [19], flash sintering [20], and spark plasma sintering [21,22]. Spark plasma sintering (SPS) is a rapid sintering technique, which is widely used to fabricate metals [23,24], metallic alloys [25,26], carbide [27], various MAX-phase materials [28], and metallic oxide (ZnO, AZO) [29,30], etc. Different from the conventional sintering method, SPS can fabricate ceramics in very short time under low voltage and high direct current condition.…”