The formation of reactive sintered (Ti, Mo)C–Ni cermet from nanocrystalline powders

HVOF Sprayed Fe-Based Wear-Resistant Coatings with Carbide Reinforcement, Synthesized In Situ and by Mechanically Activated Synthesis

“…cermets, as reported earlier in [31]. The average TiC grain size was also larger due to the higher sintering temperature: 1400 °C for TiC-20%NiMo [25] and 1075 °C for Cr3C2-20%Ni [23]. Particles of pure titanium (Figure 1b) exhibited an angular-like profile similar to TiC-20%NiMo particles, which, without adding mediators such as stainless steel, decreased its flowability remarkably.…”

“…Coatings 2020, 10, 1092 3 of 15 TiC grains grew from nano scale to micro scale particles of precursor powder (TiO 2 ) during the reactive sintering process, which is explained in detail in [25]. Sprayed feedstock powders were prepared by the mechanical mixture of either the produced MAS-powders or the elementary Ti and C powders (for the in situ synthesis of TiC) with the stainless steel powder.…”

Effect of short carbon fibre concentration on microstructure and mechanical properties of TiCN-based cermets

“…3, sample composition was basically unchanged when it was below 500°C and then the weight loss of the samples reached 2% when it was above 507°C, resulted from exothermic reaction between C, the residual O 2 and H 2 O and thus the release of CO and H 2 gases. 40,41 Exothermic reaction (1) occurred with temperature continuing rising up to 1200°C, and the formation of Mo 2 C and reduction of metal oxide led to N 2 and CO gases release, 40 which caused the sample weight loss once again and total weight loss was <6%. On the other hand, the generation of Mo 2 C could promote the ceramic–metal wettability in the liquid-phase sintering stage.…”

“…3, sample composition was basically unchanged when it was below 500°C and then the weight loss of the samples reached 2% when it was above 507°C, resulted from exothermic reaction between C, the residual O 2 and H 2 O and thus the release of CO and H 2 gases. 40,41 Exothermic reaction (1) occurred with temperature continuing rising up to . When it was above 1350°C, the liquid phase started to form and diffusion speed of atoms increased, and hence alloying reactions occurred in local sections.…”

“…Preparation process flow diagram of C f /TiCN composites 2 Pressureless sintering process curves of C f /TiCN composites 3 DSC-TGA curves of C f /TiCN-based cermets1200°C, and the formation of Mo 2 C and reduction of metal oxide led to N 2 and CO gases release,40 which caused the sample weight loss once again and total weight loss was <6%. On the other hand, the generation of Mo 2 C could promote the ceramic-metal wettability in the liquid-phase sintering stage 41. According to Fig.4, TiC, TiN, WC, Cr 3 C 2 and Mo phases disappeared gradually with the sintering temperature increasing, while crystallisation characteristics of hard phase TiCN and complex rim phase (Cr, W, Mo, Ti)(CN) became less and less obvious, and phase structure did not change obviously as a whole when it was above 1450°C.…”