Short-time creep investigation of TiB2-Fe composite

Andrievski, R.A.; Baiman, I. F.

doi:10.1007/bf00736200

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Also the high temperature properties due to covalent bonds cause poor sinterability [10,20]. To overcome this issue, metal matrix composites (MMCs), have been extensively developed [4,6,18,26,27,28]. In this case, the lower melting point metal additive used as a matrix phase, especially one forming low temperature eutectics, causes significant reduction of the maximum temperature the composite could be applied, due to softening and poor creep resistance [19,26].…”

Section: Introductionmentioning

confidence: 99%

“…To overcome this issue, metal matrix composites (MMCs), have been extensively developed [4,6,18,26,27,28]. In this case, the lower melting point metal additive used as a matrix phase, especially one forming low temperature eutectics, causes significant reduction of the maximum temperature the composite could be applied, due to softening and poor creep resistance [19,26]. Indeed, ceramic matrix composites (CMCs) based on only TiB 2 and B 4 C, are better candidates for harsh environments [20] and ultra-high temperature devices [19].…”

Section: Introductionmentioning

confidence: 99%

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TiB2-Based Composites for Ultra-High-Temperature Devices, Fabricated by SHS, Combining Strong and Weak Exothermic Reactions

Ziemnicka-Sylwester

2013

Materials

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TiB2-based ceramic matrix composites (CMCs) were fabricated using elemental powders of Ti, B and C. The self-propagating high temperature synthesis (SHS) was carried out for the highly exothermic “in situ” reaction of TiB2 formation and the “tailing” synthesis of boron carbide characterized by weak exothermicity. Two series of samples were fabricated, one of them being prepared with additional milling of raw materials. The effects of TiB2 vol fraction as well as grain size of reactant were investigated. The results revealed that combustion was not successful for a TiB2:B4C molar ratio of 0.96, which corresponds to 40 vol% of TiB2 in the composite, however the SHS reaction was initiated and self-propagated for the intended TiB2:B4C molar ratio of 2.16 or above. Finally B13C2 was formed as the matrix phase in each composite. Significant importance of the grain size of the C precursor with regard to the reaction completeness, which affected the microstructure homogeneity and hardness of investigated composites, was proved in this study. The grain size of Ti powder did not influence the microstructure of TiB2 grains. The best properties (HV = 25.5 GPa, average grain size of 9 μm and homogenous microstructure), were obtained for material containing 80 vol% of TiB2, fabricated using a graphite precursor of 2 μm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

TiB2-Based Composites for Ultra-High-Temperature Devices, Fabricated by SHS, Combining Strong and Weak Exothermic Reactions

Ziemnicka-Sylwester

2013

Materials

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“…V. Kondratev, * This review is limited in scope and does not highlight results related to activated sintering [8,10], gas release during sintering [26,58], sintering of stainless and high-speed steel powders [59][60][61][62], properties of composites produced by self-propagating high-temperature synthesis [63][64][65], and evolution of properties during sintering and effect of porosity on the properties of sinters [26,66,67].…”

Section: Acknowledgementmentioning

confidence: 99%

Research into sintering and related phenomena: personal experience

Андриевский

2011

Powder Metall Met Ceram

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The studies on deformation and diffusion processes during sintering are analyzed. Attention is paid to the effect of compressive and tensile stresses on shrinkage of silver, copper, and nickel powders. Superplastic deformation and displacement of particles as a whole are observed during shrinkage. Self-diffusion in transition metal carbides as well as their creep and neck growth during sintering are widely studied. The theory of effective diffusion coefficient is developed to be applied to diffusion-controlled processes in interstitial phases. The proposed relationships are shown to be applicable to creep and neck growth during sintering. Areas of further nanoscale studies are discussed.

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Boron compounds with group IV elements: properties of boron-titanium compounds

Landolt-Börnstein - Group III Condensed Matter

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Short-time creep investigation of TiB2-Fe composite

Cited by 5 publications

References 2 publications

TiB2-Based Composites for Ultra-High-Temperature Devices, Fabricated by SHS, Combining Strong and Weak Exothermic Reactions

TiB2-Based Composites for Ultra-High-Temperature Devices, Fabricated by SHS, Combining Strong and Weak Exothermic Reactions

Research into sintering and related phenomena: personal experience

Boron compounds with group IV elements: properties of boron-titanium compounds

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