The kinetics of incongruent reduction of tungsten carbide via reaction with a hafnium–copper melt

Liu, Yajun; Lipke, David W.; Zhang, Yunshu; Sandhage, Kenneth H.

doi:10.1016/j.actamat.2009.04.052

Cited by 11 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, ZrC/W composites have been synthesized via the reaction of WC with molten Zr 2 Cu. [18][19][20][21] In the present case, however, (Zr,W)C solid solutions were converted into ZrC matrices containing intragranular W nanoparticles via the following selective displacement reaction:…”

Section: Introductionmentioning

confidence: 99%

“…Several authors have examined the syntheses of metal/ceramic composites via reaction of oxides or carbides with liquid metal reducing agents. For example, ZrC/W composites have been synthesized via the reaction of WC with molten Zr 2 Cu . In the present case, however, (Zr,W)C solid solutions were converted into ZrC matrices containing intragranular W nanoparticles via the following selective displacement reaction:

{WC} + {Zr} = ZrC + W

where {WC} refers to the tungsten carbide dissolved within a (Zr,W)C solid solution, {Zr} refers to zirconium dissolved within a Zr 14 Cu 51 melt, and ZrC refers to zirconium carbide formed upon reaction of carbon (liberated upon dissociation of the WC) with zirconium present in the melt.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction

et al. 2012

Self Cite

View full text Add to dashboard Cite

A selective liquid/solid displacement reaction has been used, for the first time, to convert non‐oxide ceramic solid solutions into composites comprised of intragranular metal nanoparticles embedded within non‐oxide ceramic microcrystals. The reaction of (ZrxW1−x)C microparticles with a Zr–Cu liquid at 1300°C resulted in the formation of W/ZrC microparticles with a core‐shell morphology. The internal microparticle core was comprised of W nanoparticles embedded within a single crystal ZrC matrix, whereas the W‐free shell was comprised of an epitaxial layer of ZrC. Such a selective liquid/solid reaction process may be used to generate a variety of intragranular metal/ceramic‐matrix composites.

show abstract

Section: Introductionmentioning

confidence: 99%

{WC} + {Zr} = ZrC + W

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, structural deflection that must be assumed before potential energy is precisely described. For example, the deflection of a cantilever can be assumed either as a square function of the axial position or as polynomial functions that satisfy the boundary conditions . The deflection of a fixed–fixed beam (FFB) is hypothesized to be either a cosine function of the axial position or the sum of modes that multiply modal participation factors .…”

Section: Introductionmentioning

confidence: 99%

Modeling the pull‐in behavior of electrostatically actuated micro beams by an approximate finite element method

Zhou

Shen

Guo

et al. 2013

Int J Numerical Modelling

View full text Add to dashboard Cite

We establish the deflection functions of electrostatically actuated micro beams by an approximate finite element method (AFEM), in which the beam and the electrostatic load are discretized. The beam is replaced with a series of beam elements by traditional FEM. Using the total differential of the distributed electrostatic force, we represent such a force with the nodal forces on the beam elements. We calculate the deformation curve of the beam by gradually loading voltage in small increments, and pull-in behavior is identified when the convergence of the deflection iteration cannot be achieved after voltage increment. The proposed method considers the effect of deformation on stiffness by establishing a new equivalent stiffness matrix for each voltage step based on of the results of previous steps. Through this approach, we prevent the approximate errors of the stiffness matrix from accumulating. The AFEM results on micro beams with different geometries indicate good agreement with those obtained by other studies and those derived using commercial FE software.

show abstract

UHTC Composites for Hypersonic Applications

Paul

Binner

Vaidhyanathan

2014

Ultra‐High Temperature Ceramics

100

110

View full text Add to dashboard Cite

The kinetics of incongruent reduction of tungsten carbide via reaction with a hafnium–copper melt

Cited by 11 publications

References 42 publications

Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction

Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction

Modeling the pull‐in behavior of electrostatically actuated micro beams by an approximate finite element method

UHTC Composites for Hypersonic Applications

Contact Info

Product

Resources

About