In Situ High-Pressure Synthesis of New Outstanding Light-Element Materials under Industrial P-T Range

Godec, Yann Le; Courac, Alexandre

doi:10.3390/ma14154245

Cited by 6 publications

(6 citation statements)

References 105 publications

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“…The paper by LeGodec and Courac describes the various designs of multianvil presses in detail. [ 132 ] Zhou et al, used a UHP cubic cell (with WC anvils) and direct AC heating for the sintering of fine‐grained tungsten and molybdenum. A pressure of 9 GPa and a temperature of 1200–1300 °C only enabled full densification of these refractory materials.…”

Section: Tooling For High‐pressure Fast/spsmentioning

confidence: 99%

Tooling in Spark Plasma Sintering Technology: Design, Optimization, and Application

Laptev,

Bram,

Garbiec

et al. 2024

Adv Eng Mater

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Spark plasma sintering as the prominent field‐assisted sintering technique (FAST/SPS) is a novel technology for the rapid, pressure‐assisted consolidation of powder materials. The main feature of FAST/SPS is the Joule heating of the used tooling. Tooling is a core part of the FAST/SPS setup, which must withstand high pressure at elevated temperatures ensuring a uniform temperature distribution inside the sintered part. This review looks at the standard FAST/SPS tooling, the specific tooling used for sintering complex‐shaped parts and for pressureless sintering. A particular focus lies on the graphite, the commonly used tooling material, and on alternative materials such as steel, alloys, ceramics, and composites. The review also considers the add‐on tooling elements, including spacers, foils, and thermal insulation. Furthermore, the paper discusses the basics of FAST/SPS modeling, the computer‐based optimization of FAST/SPS tooling, the simulation procedure used, and the modelling accuracy. The review briefly describes the tooling and equipment for manufacturing upsized parts and large‐scale production. In addition, the paper considers the tooling for FAST/SPS sintering under high pressure (up to 1 GPa) and ultra‐high pressure (over 1 GPa). The paper concludes with an analysis of the challenges and prospective solutions for the continued development of FAST/SPS tooling.This article is protected by copyright. All rights reserved.

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Section: Tooling For High‐pressure Fast/spsmentioning

confidence: 99%

Tooling in Spark Plasma Sintering Technology: Design, Optimization, and Application

Laptev,

Bram,

Garbiec

et al. 2024

Adv Eng Mater

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“…However, until now there has been no device for in situ monitoring of SPS processes. For this reason, we developed a compact very high-pressure SPS [ 52 ] on the base of a Paris–Edinburgh press, which is specially designed for in situ measurements on large facilities [ 22 ]. Indeed, the press and the pulsed current heating unit (described in section II-4) can be installed in one hour on a synchrotron beamline ( Figure 17 ).…”

Section: Prospects For Technological Breakthroughsmentioning

confidence: 99%

“…Finally, in chemistry and materials science, high-pressure studies can allow the synthesis of new compounds with exceptional properties, which are usually impossible to synthesize under the usual conditions of atmospheric pressure. Indeed, following historical studies on the high-pressure synthesis of diamond and then of cubic boron nitride in the 20th century, the most recent discoveries concern a wide range of new strategic materials which can have exceptional mechanical, energetic, magnetic, optical or thermoelectric properties, making it possible to consider important technological applications [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Developments of High-Pressure Spark Plasma Sintering: An Overview of Current Applications, Challenges and Future Directions

Godec

Floch

2023

Materials

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Spark plasma sintering (SPS), also called pulsed electric current sintering (PECS) or field-assisted sintering technique (FAST) is a technique for sintering powder under moderate uniaxial pressure (max. 0.15 GPa) and high temperature (up to 2500 °C). It has been widely used over the last few years as it can achieve full densification of ceramic or metal powders with lower sintering temperature and shorter processing time compared to conventional processes, opening up new possibilities for nanomaterials densification. More recently, new frontiers of opportunities are emerging by coupling SPS with high pressure (up to ~10 GPa). A vast exciting field of academic research is now using high-pressure SPS (HP-SPS) in order to play with various parameters of sintering, like grain growth, structural stability and chemical reactivity, allowing the full densification of metastable or hard-to-sinter materials. This review summarizes the various benefits of HP-SPS for the sintering of many classes of advanced functional materials. It presents the latest research findings on various HP-SPS technologies with particular emphasis on their associated metrologies and their main outstanding results obtained. Finally, in the last section, this review lists some perspectives regarding the current challenges and future directions in which the HP-SPS field may have great breakthroughs in the coming years.

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“…It is also an obstacle to understanding the mechanism of functional properties of Ni−B compounds. 9 Hence, it is urgent to synthesize single phases of Ni−B compounds to further uncover a new kind of functional material.…”

Section: Introductionmentioning

confidence: 99%

“…There is still a lack of data on the intrinsic properties of Ni–B compounds, such as conductivity and hardness. It is also an obstacle to understanding the mechanism of functional properties of Ni–B compounds . Hence, it is urgent to synthesize single phases of Ni–B compounds to further uncover a new kind of functional material.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ni–B Compounds by High-Pressure and High-Temperature Method

et al. 2023

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Nickel borides are promising multifunctional materials for high hardness and excellent properties in catalysis and magnetism. However, it is still a blank of intrinsic properties in Ni−B compounds, because crystallization of the single phases of Ni−B compounds with micro-size is a challenge. In this work, single phases of Ni 2 B (I4/mcm), α-Ni 4 B 3 (Pnma), β-Ni 4 B 3 (C2/c), and NiB (Cmcm) are synthesized by high pressure and high temperature (HPHT). The results indicate that synthesizing α-Ni 4 B 3 and β-Ni 4 B 3 requires more energy than Ni 2 B and NiB. The growth process of Ni−B compounds is that Ni covers B to form Ni−B compounds under HPHT, which also makes the slight excess of B necessary. So, generating homogeneous distribution of starting materials and increasing the interdiffusion between Ni and B are two keys to synthesize well crystallized and purer samples by HPHT. This work uncovers the growth process of Ni−B compounds, which is significant to guide the synthesis of highly crystalline transition metal borides (TMBs) in the future.

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In Situ High-Pressure Synthesis of New Outstanding Light-Element Materials under Industrial P-T Range

Cited by 6 publications

References 105 publications

Tooling in Spark Plasma Sintering Technology: Design, Optimization, and Application

Tooling in Spark Plasma Sintering Technology: Design, Optimization, and Application

Recent Developments of High-Pressure Spark Plasma Sintering: An Overview of Current Applications, Challenges and Future Directions

Synthesis of Ni–B Compounds by High-Pressure and High-Temperature Method

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