Intermediate Stage Processes: Solution-Reprecipitation

German, Randall M.

doi:10.1007/978-1-4899-3599-1_5

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…In the solution-reprecipitation mechanism during intermediate liquidphase sintering, the slope is 0.333. 26 The slopes of the solid lines in Fig. 2 coincide with the 0.333 value.…”

Section: Resultssupporting

confidence: 52%

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics

Kondô

Kurihara

2001

Journal of the American Ceramic Society

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The sintering behavior and surface microstructure of PbNi 1/3 -Nb 2/3 O 3 -PbTiO 3 -PbZrO 3 (PNiNb-PT-PZ) ceramics were investigated. The PNiNb-PT-PZ ceramics with the stoichiometric composition and the addition of excess lead oxide (PbO-rich ceramics) were sintered by liquid-phase sintering in accordance with the solution-reprecipitation mechanism at temperatures below the melting point of PbO. The temperature at which the liquid phase forms fell to near the eutectic point of the PbO-Nb 2 O 5 and the PbO-TiO 2 system (868°C) with the addition of 5 mol% PbO. As the calcination temperature influenced the sinterability of the stoichiometric PNiNb-PT-PZ ceramic, unreacted PbO was considered to be the source of the liquid phase in the sintering of the stoichiometric powder. The secondary phase was observed at the surface of PbO-rich ceramics and was suggested to be a liquid phase expelled from inside the ceramic. A sintering scheme of PNiNb-PT-PZ ceramics was proposed, and the high sinterability of PNiNb-PT-PZ ceramics was attributed to the low formation temperature of the liquid phase. Fig. 9. Scheme of the sintering behavior of the PbO-rich PNiNb-PT-PZ ceramics.

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“…In the solution-reprecipitation mechanism during intermediate liquidphase sintering, the slope is 0.333. 26 The slopes of the solid lines in Fig. 2 coincide with the 0.333 value.…”

Section: Resultssupporting

confidence: 52%

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics

Kondô

Kurihara

2001

Journal of the American Ceramic Society

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“…If the precursor raw materials for hydroxyapatite formation are in nanometer sizes, they can react faster and at a lower temperature. It can produce nano scale size hydroxyapatite material due to high surface area of reactants 12 .…”

Section: Literature Reviewmentioning

confidence: 99%

In Situ Formation of Hydroxyapatite During Powder Metallurgy Preparation of Porous Ti/HA Nano Composite: A Candidate for Dental Implants

Mousavi

Sarraf-Mamoory

2018

Mat. Res.

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Porous Ti/HA nano-composite was prepared for implant fixtures and in situ formation of Hydroxyapatite. At first, Ca(OH) 2 nanoparticles were synthesized by precipitation. Raw materials included Ca(NO 3) 2 .4H 2 O, NaOH, a mixture of deionized water and ethanol. Synthesized Ca(OH) 2 nano powder was mixed with (NH 4) 2 HPO 4 and the mixture was calcined at 700 ºC for 30 min. After calcination, Ca 2 P 2 O 7 and CaPO 3 (OH).2H 2 O were synthesized with imperfect hexagonal morphology. The resulting powder was mixed with pure titanium powder and pressed under 300, 500 and 700 MPa. The samples were sintered at 1000 ºC for an hour under pure argon. Final composition was Ti/HA with hexagonal morphology. XRD and SEM showed the in situ formation of nano hydroxyapatite besides titanium phases during the sintering procedure. The density and open porosity of the 700 MPa pressed-samples were 3.07 g/cm 3 and 28.2%, respectively. In general, porous Ti/HA nanocomposite with suitable porosity could be successfully synthesized by co-precipitation procedure.

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Densification behavior of tungsten heavy alloy based on master sintering curve concept

Park

Martín

Guo

et al. 2006

Metall Mater Trans A

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Intermediate Stage Processes: Solution-Reprecipitation

Cited by 8 publications

References 49 publications

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics

In Situ Formation of Hydroxyapatite During Powder Metallurgy Preparation of Porous Ti/HA Nano Composite: A Candidate for Dental Implants

Densification behavior of tungsten heavy alloy based on master sintering curve concept

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Intermediate Stage Processes: Solution-Reprecipitation

Cited by 8 publications

References 49 publications

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi1/3Nb2/3O3–PbTiO3–PbZrO3 Ceramics

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi1/3Nb2/3O3–PbTiO3–PbZrO3 Ceramics

In Situ Formation of Hydroxyapatite During Powder Metallurgy Preparation of Porous Ti/HA Nano Composite: A Candidate for Dental Implants

Densification behavior of tungsten heavy alloy based on master sintering curve concept

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Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics

Sintering Behavior and Surface Microstructure of PbO‐Rich PbNi_1/3Nb_2/3O₃–PbTiO₃–PbZrO₃ Ceramics