Transformation in metal materials during hot isostatic pressing

Падалко, А. Г.; Baklan, V. A.

doi:10.1134/s0020168512130031

“…In this contribution, we report on the explorative nitridophosphate synthesis in a hot isostatic press (HIP) that is typically used for sintering and annealing processes in ceramics production and powder metallurgy, but is also an established large‐scale technique for nitridosilicate synthesis . The HIP approach enables fast chemical reactions under elevated nitrogen pressure, which yield large‐volume and crystalline sample quantities, representing a milestone in nitridophosphate synthesis.…”

Section: Figurementioning

confidence: 99%

HIP to be Square: Simplifying Nitridophosphate Synthesis in a Hot Isostatic Press

Wendl

¹

,

Mardazad

²

,

Strobel

³

et al. 2020

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(Oxo)Nitridophosphates have recently been identified as a promising compound class for application in the field of solid‐state lighting. Especially, the latest medium‐pressure syntheses under ammonothermal conditions draw attention of the semiconductor and lighting industry on nitridophosphates. In this contribution, we introduce hot isostatic presses as a new type of medium‐pressure synthetic tool, further simplifying nitridophosphate synthesis. In a second step, phosphorus nitride was replaced as starting material by red phosphorus, enabling the synthesis of Ca2PN3 as model compound, starting only from readily available compounds. Moreover, first luminescence investigations on Eu2+‐doped samples reveal Ca2PN3:Eu2+ as a promising broad‐band red‐emitter (λem=650 nm; fwhm=1972 cm−1). Besides simple handling, the presented synthetic method offers access to large sample volumes, and the underlying reaction conditions facilitate single‐crystal growth, required for excellent optical properties.

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“…The currently applied foundry technologies are based on the method of investment casting, using multi-layer ceramic moulds. The operating parameters of castings are additionally improved by the use of Hot Isostatic Pressing (HIP) [3,4].…”

Section: Introductionmentioning

confidence: 99%

Making Artificial Heart Components – Selected Aspects Of Casting Technology

Sobczak¹,

Karwiński²,

Leśniewski³

et al. 2015

Archives of Metallurgy and Materials

0

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This study shown possibilities of Rapid Prototyping techniques (RP) and metal casting simulation software (MCSS), including non inertial reference systems. RP and MCSS have been used in order to design and produce essential elements for artificial heart. Additionally it has been shown possibilities of Fused Deposition Modeling (FDM) technique and DodJet technology using prototyped elements of rotodynamic pump. MAGMASOFT® software allowed to verify the cast kit heart valves model. Optical scanner Atos III enabled size verification of experimental elements supplied by rapid prototyping together with metal casting elements. Due to the selection of ceramic materials and assessment of molten metal -ceramic reactivity at high temperatures together with pattern materials selection model it was possible to design, manufacture a ceramic mould for titanium based alloys. The casting structure modification has been carried out by means of high isostatic pressure technique (HIP). The quality assessment of the casting materials has been performed using X-ray fluorescence (XRF), ARL 4460 Optical Emission Spectrometer, metallographic techniques and X-ray computed tomography.Keywords: Ti based alloys, Rapid Prototyping, pattern material, ceramic moulds, castings W artykule przedstawiono wykorzystanie technik szybkiego prototypowania oraz programów do symulacji przepływów stopów odlewniczych, w tym w nieinercyjnych układach odniesienia, do projektowania, a następnie wykonania elementów sztucznego serca. Zaprezentowano kolejno technikę Fused Deposition Modeling (FDM) oraz technologię DodJet na przykładzie wykonania prototypowych elementów pomp wirowych. Program MAGMASOFT ® pozwolił zweryfikować projekt zestawu odlewniczego zastawki serca. Zastosowanie skanera optycznego Atos III umożliwiło weryfikację wymiarów doświadczalnych elementów otrzymanych przy wykorzystaniu technik RP oraz elementów odlewanych. Dzięki doborowi materiałów ceramicznych pod kątem oceny ich reakcji z ciekłym metalem oraz doborowi mas modelowych możliwe było opracowanie doświadczalnych form ceramicznych przeznaczonych do odlewania stopów tytanu. Modyfikację struktury odlewów wykonano przy zastosowaniu obróbką techniką HIP. Ocenę jakości wykonanych odlewów przeprowadzono kolejno metodą mikrofluorescencji rentgenowskiej, emisyjnym spektrometrem optycznym, technikami metalograficznymi oraz rentgenowską tomografią komputerową.

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“…In this contribution, we report on the explorative nitridophosphate synthesis in a hot isostatic press (HIP) that is typically used for sintering and annealing processes in ceramics production and powder metallurgy, but is also an established large-scale technique for nitridosilicate synthesis. [26][27][28][29][30][31] The HIP approach enables fast chemical reactions under elevated nitrogen pressure, which yield large-volume and crystalline sample quantities, representing a milestone in nitridophosphate synthesis. In order to demonstrate the benefits of HIP syntheses, Ca 2 PN 3 serves as model compound in this contribution.…”

mentioning

confidence: 99%

HIP to be Square: Simplifying Nitridophosphate Synthesis in a Hot Isostatic Press

Wendl

¹

,

Mardazad

²

,

Strobel

³

et al. 2020

View full text Add to dashboard Cite

(Oxo)Nitridophosphates have recently been identified as a promising compound class for application in the field of solid‐state lighting. Especially, the latest medium‐pressure syntheses under ammonothermal conditions draw attention of the semiconductor and lighting industry on nitridophosphates. In this contribution, we introduce hot isostatic presses as a new type of medium‐pressure synthetic tool, further simplifying nitridophosphate synthesis. In a second step, phosphorus nitride was replaced as starting material by red phosphorus, enabling the synthesis of Ca2PN3 as model compound, starting only from readily available compounds. Moreover, first luminescence investigations on Eu2+‐doped samples reveal Ca2PN3:Eu2+ as a promising broad‐band red‐emitter (λem=650 nm; fwhm=1972 cm−1). Besides simple handling, the presented synthetic method offers access to large sample volumes, and the underlying reaction conditions facilitate single‐crystal growth, required for excellent optical properties.

show abstract

Transformation in metal materials during hot isostatic pressing

Cited by 4 publications

References 25 publications

HIP to be Square: Simplifying Nitridophosphate Synthesis in a Hot Isostatic Press

HIP to be Square: Simplifying Nitridophosphate Synthesis in a Hot Isostatic Press

Making Artificial Heart Components – Selected Aspects Of Casting Technology

HIP to be Square: Simplifying Nitridophosphate Synthesis in a Hot Isostatic Press

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