Structure and Phase Composition of SHS Products in Powder Mixtures of Titanium, Carbon, and Aluminum

Прибытков, Г. А.; Krinitsyn, M. G.; Коржова, В. В.; Baranovskiy, A. V.

doi:10.3103/s106782122002011x

Cited by 5 publications

(1 citation statement)

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“…It was shown that a temperature exceeding the melting point of aluminum is necessary to induce the interaction of TiAl 3 with carbon [23]. When Ti-C-Al mixtures containing 10-50 wt.% of Al are ignited, the formation of TiC-Al composites occurs in the mode of self-propagating high-temperature synthesis [24]. In our studies, we have found that it is possible to synthesize TiC in an Al-rich reaction mixture (Ti-C-3Al atomic composition, 57 wt.% of Al) via a two-step processing: SPS at 550 • C (not allowing extensive interaction of Ti and Al to occur) followed by fast heating of the compact up to 800 • C (Figure 2a,b).…”

Section: Table 1 Characteristics Of A-b and A-b-c Systems (Reaction Mixtures Of Elemental Powders) Examples Of Metal-ceramicmentioning

confidence: 99%

Synthesis of Ceramic Reinforcements in Metallic Matrices during Spark Plasma Sintering: Consideration of Reactant/Matrix Mutual Chemistry

2021

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Metal–ceramic composites are obtained via ex-situ or in-situ routes. The in-situ route implies the synthesis of reinforcement in the presence of a matrix and is often regarded as providing more flexibility to the microstructure design of composites than the ex-situ route. Spark plasma sintering (SPS) is an advanced sintering method that allows fast consolidation of various powder materials up to full or nearly full density. In reactive SPS, the synthesis and consolidation are combined in a single processing step, which corresponds to the in-situ route. In this article, we discuss the peculiarities of synthesis of ceramic reinforcements in metallic matrices during SPS with a particular consideration of reactant/matrix mutual chemistry. The formation of carbide reinforcements in Cu, Al, and Ni matrices is given attention with examples elaborated in the authors’ own research. Factors determining the suitability of reactive SPS for manufacturing of composites from a matrix/reactants system and features of the structural evolution of the reaction mixture during sintering are discussed.

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Section: Table 1 Characteristics Of A-b and A-b-c Systems (Reaction Mixtures Of Elemental Powders) Examples Of Metal-ceramicmentioning

confidence: 99%