2007
DOI: 10.1016/j.jeurceramsoc.2006.04.003
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Compressibility of the structural and functional ceramic nanopowders

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Cited by 19 publications
(12 citation statements)
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“…An improvement of the strength of such a composite is also possible when using a fine powder of boron carbide which would effectively fill the space between the densely packed particles of the matrix alloy. The powder compressibility characterization has been performed by plotting the compaction curves ρ(P) obtained for the conditions of uniaxial quasi-static pressing with loading-reloading cycles and using an approximation by a logarithmic equation in a dimensionless form [7,8]: (2) where ρ is the relative density of the green body; P is the applied compaction pressure; P cr is the critical pressure (pressure enabling compaction up to full density of the powder material); b is a material constant defining densification pressure sensitivity. Due to the limitations on the values of the relative density ( 01   ), equation (2) is valid for a limited range of the values of the applied pressure:…”
Section: Optimization Of Powder Mixturesmentioning
confidence: 99%
“…An improvement of the strength of such a composite is also possible when using a fine powder of boron carbide which would effectively fill the space between the densely packed particles of the matrix alloy. The powder compressibility characterization has been performed by plotting the compaction curves ρ(P) obtained for the conditions of uniaxial quasi-static pressing with loading-reloading cycles and using an approximation by a logarithmic equation in a dimensionless form [7,8]: (2) where ρ is the relative density of the green body; P is the applied compaction pressure; P cr is the critical pressure (pressure enabling compaction up to full density of the powder material); b is a material constant defining densification pressure sensitivity. Due to the limitations on the values of the relative density ( 01   ), equation (2) is valid for a limited range of the values of the applied pressure:…”
Section: Optimization Of Powder Mixturesmentioning
confidence: 99%
“…Several mechanisms have been proposed for the densification or compaction of ceramic powders [24,25]. Some of the characteristics of ceramic powder compaction could be applied to the process of MC.…”
Section: Coating Microstructurementioning
confidence: 99%
“…[15] and ceramic powders, e.g. [16,17]. It is pertinent to briefly consider here some features of ceramic powder compaction by using, for instance, a die and punch assembly.…”
Section: Densification Of the Particle Layermentioning
confidence: 99%
“…It should be noted that the van der Waals forces are undesirable in most fine powder die compaction processes because they significantly retard the mutual rearrangement of particles. This is, along with the above-mentioned effect of die-wall friction, another reason why densification of nanosized powders requires enormous pressures [16]. Similarly, in the UMCA coating process, attractive forces between TiN nanoparticles can impede their ability to rearrange.…”
Section: Consolidation Of Nanoparticlesmentioning
confidence: 99%
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