Preparation of porous SiC-ceramics by sol–gel and spark plasma sintering

Simonenko, Elizaveta P.; Симоненко, Н. П.; Папынов, Е. К.; Shichalin, O.O.; Golub, A. V.; Mayorov, V. Yu.; Авраменко, В. А.; Sevastyanov, V. G.; Кузнецов, Н. Т.

doi:10.1007/s10971-017-4367-2

Cited by 30 publications

(14 citation statements)

References 50 publications

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“…The mixture (12.12 g) was placed in a graphite crucible and sintered according to the programmed regime in the vacuum (6 Pa) in the SPS-515S (Dr. Sinter-LABTM, Japan) to obtain the Sample. The chosen regime based on the related topics [2,8,9] and the team experience (for example, [10][11][12][13]). The average heating rate was 100 C/min, the maximum sintering temperature was 2100 C, the holding time at a maximum temperature of 5 min, and the pressing pressure was constant throughout the process and was 50.4 MPa.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Hf-C-N ceramics by spark plasma sintering

Zavjalov¹,

Papynov²,

Shichalin³

et al. 2019

EPJ Web Conf.

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Section: Methodsmentioning

confidence: 99%

Synthesis of Hf-C-N ceramics by spark plasma sintering

Zavjalov¹,

Papynov²,

Shichalin³

et al. 2019

EPJ Web Conf.

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“…Simonenko et al [68] combined the carbothermal synthesis of silicon carbide from finely-dispersed starting SiO 2 –C (obtained by means of the sol–gel technique) with the formation of silicon carbide ceramics during SPS. The goal of their work was to develop a fabrication method of porous silicon carbide ceramics to be used as inert supports for catalysts and for making filters for hot gases and molten salts.…”

Section: Fabrication Of Porous Materials By Partial Densification mentioning

confidence: 99%

“…However, in some case, such a space holder can be found. An interesting method of producing porous alumina was suggested by Shin et al [68], who used graphite as a space holder during SPS. After sintering, the graphite was burnt out to produce porous alumina.…”

Section: Fabrication Of Porous Materials By Sps Using Space Holdermentioning

confidence: 99%

Fabrication of Porous Materials by Spark Plasma Sintering: A Review

2019

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Spark plasma sintering (SPS), a sintering method that uses the action of pulsed direct current and pressure, has received a lot of attention due to its capability of exerting control over the microstructure of the sintered material and flexibility in terms of the heating rate and heating mode. Historically, SPS was developed in search of ways to preserve a fine-grained structure of the sintered material while eliminating porosity and reaching a high relative density. These goals have, therefore, been pursued in the majority of studies on the behavior of materials during SPS. Recently, the potential of SPS for the fabrication of porous materials has been recognized. This article is the first review to focus on the achievements in this area. The major approaches to the formation of porous materials by SPS are described: partial densification of powders (under low pressures, in pressureless sintering processes or at low temperatures), sintering of hollow particles/spheres, sintering of porous particles, and sintering with removable space holders or pore formers. In the case of conductive materials processed by SPS using the first approach, the formation of inter-particle contacts may be associated with local melting and non-conventional mechanisms of mass transfer. Studies of the morphology and microstructure of the inter-particle contacts as well as modeling of the processes occurring at the inter-particle contacts help gain insights into the physics of the initial stage of SPS. For pre-consolidated specimens, an SPS device can be used as a furnace to heat the materials at a high rate, which can also be beneficial for controlling the formation of porous structures. In sintering with space holders, SPS processing allows controlling the structure of the pore walls. In this article, using the literature data and our own research results, we have discussed the formation and structure of porous metals, intermetallics, ceramics, and carbon materials obtained by SPS.

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“…However, the technology of spark plasma sintering–reactive synthesis (SPS-RS) should be considered even more promising for the production of innovative ceramics. SPS-RS is based on the chemical interaction between the starting components of the sintering mixture under the influence of spark plasma, resulting in a new type of the final product [ 47 , 48 , 49 ]. This approach allows one to directly obtain different materials with unique properties based on multi-component ceramic systems.…”

Section: Introductionmentioning

confidence: 99%

CaSiO3-HAp Structural Bioceramic by Sol-Gel and SPS-RS Techniques: Bacteria Test Assessment

Папынов

Shichalin

Buravlev

et al. 2020

JFB

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The article presents an original way of getting porous and mechanically strong CaSiO3-HAp ceramics, which is highly desirable for bone-ceramic implants in bone restoration surgery. The method combines wet and solid-phase approaches of inorganic synthesis: sol-gel (template) technology to produce the amorphous xonotlite (Ca6Si6O17·2OH) as the raw material, followed by its spark plasma sintering–reactive synthesis (SPS-RS) into ceramics. Formation of both crystalline wollastonite (CaSiO3) and hydroxyapatite (Ca10(PO4)6(OH)2) occurs “in situ” under SPS conditions, which is the main novelty of the method, due to combining the solid-phase transitions of the amorphous xonotlite with the chemical reaction within the powder mixture between CaO and CaHPO4. Formation of pristine HAp and its composite derivative with wollastonite was studied by means of TGA and XRD with the temperatures of the “in situ” interactions also determined. A facile route to tailor a macroporous structure is suggested, with polymer (siloxane-acrylate latex) and carbon (fibers and powder) fillers being used as the pore-forming templates. Microbial tests were carried out to reveal the morphological features of the bacterial film Pseudomonas aeruginosa that formed on the surface of the ceramics, depending on the content of HAp (0, 20, and 50 wt%).

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Preparation of porous SiC-ceramics by sol–gel and spark plasma sintering

Cited by 30 publications

References 50 publications

Synthesis of Hf-C-N ceramics by spark plasma sintering

Synthesis of Hf-C-N ceramics by spark plasma sintering

Fabrication of Porous Materials by Spark Plasma Sintering: A Review

CaSiO3-HAp Structural Bioceramic by Sol-Gel and SPS-RS Techniques: Bacteria Test Assessment

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