Titanium foams produced by solid-state replication of NaCl powders

Ye, Bing; Dunand, David C.

doi:10.1016/j.msea.2010.09.054

Cited by 99 publications

(48 citation statements)

References 41 publications

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“…However, the Ti6Al4V/NaCl mixture cannot be densified at the same condition. It indicates that the Ti6Al4V/NaCl mixture is difficult to be consolidated either in the hot pressing [10] or in the PECS. The pressureless PECS method was firstly proposed by Zhang et al [21].…”

Section: Discussionmentioning

confidence: 99%

“…The use of space holder materials allows a simple and accurate control of pore fraction, shape and connectivity in titanium alloys. Open-celled pure titanium foams were fabricated by vacuum hot pressing of a blend of Ti and NaCl spacer followed by NaCl removal in water [10]. However, the Ti6Al4V/NaCl mixture is difficult to be densified by the hot pressing due to the higher creep resistance of this alloy at 790 o C [10].…”

Section: Introductionmentioning

confidence: 99%

“…Open-celled pure titanium foams were fabricated by vacuum hot pressing of a blend of Ti and NaCl spacer followed by NaCl removal in water [10]. However, the Ti6Al4V/NaCl mixture is difficult to be densified by the hot pressing due to the higher creep resistance of this alloy at 790 o C [10]. Promising approach to produce Ti alloys is the pulsed electric current sintering process.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sintering and Heat Treatment of Titanium Alloys by Pulsed Electric Current Sintering

Zhang¹,

Quan²,

Reich³

et al. 2013

Sintering Applications

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sintering and Heat Treatment of Titanium Alloys by Pulsed Electric Current Sintering

Zhang¹,

Quan²,

Reich³

et al. 2013

Sintering Applications

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“…Porous metal fabrication using sacrificial space-holders offers the ability to control the pore size and shape, with the potential to achieve good pore uniformity and interconnectivity [5][6][7][8][9][10]. There are problems with this method, however, originating from unpredictable and inhomogeneous mixing of the space holder and metal powder, exacerbated by irregularly-shaped space holders and powders with large differences in sizes.…”

Section: Introductionmentioning

confidence: 99%

Porous titanium manufactured by a novel powder tapping method using spherical salt bead space holders: Characterisation and mechanical properties

Jia

Siddiq

Kennedy

2015

Journal of the Mechanical Behavior of Biomedical Materials

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The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractPorous Ti with open porosity in the range of 70-80% has been made using Ti powder and a particulate leaching technique using porous, spherical, NaCl beads. By incorporating the Ti powder into a pre-existing network of salt beads, by tapping followed by compaction, salt dissolution and "sintering", porous structures with uniform density, pore and strut sizes and a predictable level of connectivity have been produced, showing a significant improvement on the structures made by conventional powder mixing processes. Parts made using beads with sizes in the range of 0.5-1.0 mm show excellent promise as porous metals for medical devices, showing structures and porosities similar to those of commercial porous metals used in this sector, with inter-pore connections that are similar to trabecular bone. The elastic modulus (0.86 GPa) is lower than those for commercial porous metals and more closely matches that of trabecular bone and good compressive yield strength is retained (21 MPa). The ability to further tailor the structure, in terms of the density and the size of the pores and interconnections has also been demonstrated by immersion of the porous components in acid.

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“…A solid state method using space holder material which allows for simple and accurate control of pore fraction, pore shape and connectivity of porous metal is used in this present research. 8) Many different kind of space holder have been used to produce porous metal using this method, such as polymer, magnesium, 9) sodium chloride, 8) and ammonium hydro carbonate. 10) Solid state space holder method will produce two kind of porosity, macro porosity produced by space holder and micro porosity from the neck growing process between metal powders.…”

Section: Introductionmentioning

confidence: 99%

Effects of Macro- and Micro-Porosity on Mechanical Properties of a Porous Ti-6Al-4V Alloy Fabricated Using Solid-State Space-Holder Method

et al. 2014

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The effect of macro and micro porosity on properties of porous Ti-6Al-4V samples fabricated using a solid state space holder method is investigated. Sintering with mixing condition, with and without process control agents (PCA), and sintering conditions, pressure and temperature range of 3060 MPa and 700725°C were performed in order to get different macro pore morphology and micro pore quantity. It is found that macro-pore plays significant role to determine the properties of porous Ti-6Al-4V. Open porosity, Young's modulus and strength are affected by the distribution of the pores. Randomly distributed pores will results in high value of open porosity yet higher Young's modulus. Micro porosity only less affects on the mechanical properties of the porous product.

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Titanium foams produced by solid-state replication of NaCl powders

Cited by 99 publications

References 41 publications

Sintering and Heat Treatment of Titanium Alloys by Pulsed Electric Current Sintering

Sintering and Heat Treatment of Titanium Alloys by Pulsed Electric Current Sintering

Porous titanium manufactured by a novel powder tapping method using spherical salt bead space holders: Characterisation and mechanical properties

Effects of Macro- and Micro-Porosity on Mechanical Properties of a Porous Ti-6Al-4V Alloy Fabricated Using Solid-State Space-Holder Method

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