Cold isostatic pressing as a method of pre-forming green ceramic ware

Prokhorov, I. Yu.; Akimov, G. Ya.

doi:10.1016/s0955-2219(96)00153-7

Cited by 12 publications

(5 citation statements)

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“…A cold isostatic pressing (CIP) method [22], was utilized to fabricate the dense sintered blocks. α-TCP powder (α-TCP-B, Taihei Chem.…”

Section: Fabrication Of Sintered Blocks From α-Tcp Powder By Cold Isomentioning

confidence: 99%

Optimization of Sintering Conditions for Improvement of Mechanical Property of a-Tricalcium Phosphate Blocks

Iy¹

2016

Glob J Biotechnol Biomater Sci

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Bioactive ceramic materials have been under research as bone substitute for several decades. To repair the high-load bearing bones, mainly cortical bones, there is a need for the substitute to possess comparable mechanical strength to cortical bone, of which the compressive strength ranges between 100 and 230 MPa. Two prevailing bone repairing material, β-tricalcium phosphate (β-TCP, β-Ca 3 (PO 4 ) 2 ) and hydroxyapatite (HAp: Ca 10 (PO 4 ) 6 (OH) 2 ) have been widely researched and sintered into dense blocks to meet the mechanical requirements. α-tricalcium phosphate (α-TCP, α-Ca 3 (PO 4 ) 2 ), a high temperature polymorph of β-TCP, received relatively less attention and α-TCP dense sintered blocks have not been reported yet. In this research, we fabricated α-TCP dense blocks by sintering under various temperatures (1150-1400 °C) and the highest compressive strength was around 230 MPa. Intermediate porous blocks (porosity: 33%) were also fabricated from mixed powder of α-TCP and starch. In vitro properties variation of the intermediate porous blocks were investigated by soaking samples in simulated body fluid (SBF) and the compressive strength was maintained above 100 MPa after soaking for 14 d.

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“…A cold isostatic pressing (CIP) method [22], was utilized to fabricate the dense sintered blocks. α-TCP powder (α-TCP-B, Taihei Chem.…”

Section: Fabrication Of Sintered Blocks From α-Tcp Powder By Cold Isomentioning

confidence: 99%

Optimization of Sintering Conditions for Improvement of Mechanical Property of a-Tricalcium Phosphate Blocks

Iy¹

2016

Glob J Biotechnol Biomater Sci

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“…Nonetheless, optimization of these classic shape-forming processes can drastically reduce the amount of machining required and is therefore of great importance. 75,76 The two most versatile shape-forming technologies for complex components are rapid prototyping and green machining. However, casting and molding techniques which allows the use of dense dies offer also a potential for fast fabrication of complex shaped parts.…”

Section: Shaping Techniquesmentioning

confidence: 99%

Tailor-made ceramic-based components—Advantages by reactive processing and advanced shaping techniques

Janßen

Scheppokat

Claussen

2008

Journal of the European Ceramic Society

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“…Green machining is a rapid and cost-effective method for the near-net fabrication of ceramics. , Compared to brittle and hard sintered parts, much lower forces are needed for shaping a green body, , a broader spectrum of machining operations can be accommodated, and the process does not lead to significant tool wear . Green bodies that can withstand machining forces are formed through cold isostatic pressing (CIP), − gelcasting or gelforming, ,,− and protein coagulation casting. , CIP realizes machinable monolithic green bodies by compacting ceramic particles and binders under hydrostatic pressure . This method requires elastomeric molds to hold the formulation and a setup to apply isostatic pressure, mostly via either (i) immersion of the mold into a hydraulic liquid and pressurizing the system or (ii) compressing the mold in between heavy metallic parts .…”

Section: Introductionmentioning

confidence: 99%

“…11,12 CIP realizes machinable monolithic green bodies by compacting ceramic particles and binders under hydrostatic pressure. 5 This method requires elastomeric molds to hold the formulation and a setup to apply isostatic pressure, mostly via either (i) immersion of the mold into a hydraulic liquid and pressurizing the system or (ii) compressing the mold in between heavy metallic parts. 13 On the other hand, gelcasting eliminates the need for an expensive setup and generates a chemically or physically crosslinked polymer matrix around the ceramic particles that is later removed prior to sintering.…”

Section: Introductionmentioning

confidence: 99%

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

Zemberekci

Demir

Akaoğlu

et al. 2021

ACS Appl. Polym. Mater.

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Cold isostatic pressing, gelcasting, and protein coagulation are the main methods to produce machinable green bodies of ceramics. They generally employ multiple additives, such as binders, dispersants, and coagulants, and require numerous steps to embody a green body that can withstand further shaping and machining. This study reports a method that forms a ceramic dough that can be manipulated by hand, cut, or pushed into a mold. This facile method relies on a single additivea linear copolymerto homogeneously coagulate yttria-stabilized zirconia through polymer bridging. The structure of the additive is systematically designed, and the amount to be used in the formulations is optimized through electrokinetic and rheological studies. The use of this additive at 1 wt % generates ceramic objects with ∼22% shrinkage and a density of 5.95 ± 0.02 g cm −3 after sintering and enables the fabrication of intricate shapes such as structures with triangle and hexagonal cavities via laser cutting and holes in high aspect ratio objects via conventional machining.

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Cold isostatic pressing as a method of pre-forming green ceramic ware

Cited by 12 publications

References 0 publications

Optimization of Sintering Conditions for Improvement of Mechanical Property of a-Tricalcium Phosphate Blocks

Optimization of Sintering Conditions for Improvement of Mechanical Property of a-Tricalcium Phosphate Blocks

Tailor-made ceramic-based components—Advantages by reactive processing and advanced shaping techniques

Polymer Bridging Induced by a Single Additive Imparts Easy-To-Implement Green Machinability to Yttria-Stabilized Zirconia

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