scholarly journals Investigation of the Microstructure of a Sintered Sample Obtained from Powder Steel X13

2021 ◽  
Vol 346 ◽  
pp. 02019
Author(s):  
S.V. Khardikov ◽  
E.V. Ageeva ◽  
V.I. Kolmykov ◽  
V.I. Serebrovsky
Keyword(s):  
Spark Plasma Sintering ◽  
Spherical Shape ◽  
Sintered Sample ◽  
Butyl Alcohol ◽  
Powder Steel ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Regular Spherical Shape

This article presents the results of a study of the microstructure of a sintered sample made of alloy X13 electroerosive materials obtained in butyl alcohol. It has been established that during the sintering of electroerosive materials made of alloy X13 by the method of spark plasma sintering, the main elements on the surface of the particles are Fe, Cr, Mn, and the particles have a generally regular spherical shape.

scholarly journals X-ray diffraction analysis of a sintered product made of electroerosive chromium-containing powder

2021 ◽  
Vol 344 ◽  
pp. 01008
Author(s):  
S.V. Khardikov ◽  
E.V. Ageeva ◽  
V.I. Serebrovsky ◽  
V.I. Kolmykov
Keyword(s):  
Diffraction Analysis ◽  
Spark Plasma Sintering ◽  
Sintered Sample ◽  
Butyl Alcohol ◽  
X Ray Diffraction ◽  
X Ray ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintered Product

This article presents the results of x-ray diffraction analysis of a sintered sample made of X13 alloy electroerosive materials obtained in butyl alcohol. It was found that in the sintered sample by the method of spark plasma sintering from alloy X13, the main phases are Fe, Cr, and FeNi3.

Comparison of high temperature oxidation of nanocrystalline FeCr alloy consolidated by spark plasma sintering and hot pressing

2014 ◽  
Vol 11 (2) ◽  
pp. 123-130 ◽  
Author(s):  
D. Sebayang ◽  
Deni Khaerudini ◽  
M. Othman ◽  
S. Hasan ◽  
S. Mahzan ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Hot Pressing ◽  
High Temperature Oxidation ◽  
Sintered Sample ◽  
Oxide Scales ◽  
Temperature Oxidation ◽  
Microstructure Characteristics ◽  
Fecr Alloy ◽  
Plasma Sintering ◽  
Spark Plasma

The oxidation kinetics and microstructure characteristics of oxide scales thermally grown on the surface of developed FeCr alloy were investigated at 900 °C. The influence of difference sintering technique, i.e. spark plasma sintering and hot pressing, to improve nanostructured alloy performance was studied. The La-implantation was also considered in this study. It was found that the SPS sintered sample showed better performance than the HP sintered sample. Moreover, it also found that a combining of La-implantation and nanostructured alloy was most beneficial. While nanostructured alloy reduced the oxidation rate, the La-implantation increased the Cr2O3 scale conductivity.

scholarly journals Bimodal Microstructure in an AlZrTi Alloy Prepared by Mechanical Milling and Spark Plasma Sintering

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3756
Author(s):  
Orsolya Molnárová ◽  
Jan Duchoň ◽  
Esther de Prado ◽  
Štefan Csáki ◽  
Filip Průša ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Mechanical Milling ◽  
Milled Powder ◽  
Sintered Sample ◽  
Second Phase ◽  
Bimodal Microstructure ◽  
Plasma Sintering ◽  
Second Phase Particles ◽  
Spark Plasma ◽  
Powder Particles

The aim of this study was to prepare a low porosity bulk sample with a fine-grained structure from an AlZrTi alloy. Nanostructured powder particles were prepared by mechanical milling of gas atomized powder. The mechanically milled powder was consolidated using spark plasma sintering technology at 475 °C for 6 min using a pressure of 100 MPa. Sintering led to a low porosity sintered sample with a bimodal microstructure. The sintered sample was revealed to be composed of non-recrystallized grains with an approximate size of about 100 nm encompassed by distinct clusters of coarser, micrometer-sized grains. Whereas the larger grains were found to be lean on second phase particles, a high density of second phase particles was found in the areas of fine grains. The microhardness of the milled powder particles was established to be 163 ± 15 HV0.01, which decreased to a slightly lower value of 137 ± 25 HV0.01 after sintering.

Effect of Dopant on N-Type Bi2Te2.7Se0.3 Thermoelectric Materials Fabricated by Spark Plasma Sintering

2008 ◽  
Vol 368-372 ◽  
pp. 544-546
Author(s):  
Dong Choul Cho ◽  
Jae Seol Lee ◽  
Chul Ho Lim ◽  
Chi Hwan Lee
Keyword(s):  
Thermal Conductivity ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Sintered Sample ◽  
Dopant Content ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
P Type ◽  
Type Conduction

The n-type Bi2Te2.7Se0.3 compounds were fabricated to investigate the characterization of spark plasma sintering with various SbI3 dopant contents. The Bi2Te2.7Se0.3 compounds with SbI3 dopant content is exhibited n-type conduction characterization, but the Bi2Te2.7Se0.3 compounds without SbI3 dopant content is exhibited p-type conduction characterization. The maximum Seebeck coeficient represented with 0.05wt.% SbI3 dopant content. The Seebeck coefficient of the sintered sample with increasing sintering temperature is increased from -158 to -182 μV/K. The electrical resistivity and thermal conductivity with 0.05wt.% SbI3 dopant content were 1.0 m and 1.33 W/mK, respectively.

scholarly journals X-ray spectral microanalysis of W-Ni-Fe pseudoalloy obtained from electroerosive powders

2021 ◽  
Vol 344 ◽  
pp. 01001
Author(s):  
Evgeny V. Ageev ◽  
Oxana G. Loktionova ◽  
Sergey V. Pikalov ◽  
Valeryi I. Kolmykov
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Spark Plasma Sintering ◽  
Transverse Section ◽  
Sample Surface ◽  
Sintered Sample ◽  
X Ray ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Scanning Electron

The results of X-ray spectral microanalysis of W-Ni-Fe pseudo-alloy, obtained from electroerosive powders, are presented. Consolidation of the obtained electroerosive powders was carried out by the method of spark plasma sintering using the SPS 25-10 spark plasma sintering system. Using an EDAX energy-dispersive X-ray analyzer built into a Quanta 600 FEG scanning electron microscope, characteristic X-ray spectra were obtained at various points on the sample surface and along a transverse section. As a result of the study, it was found that on the surface of the investigated sintered sample, tungsten, nickel and iron are contained as the main elements, and oxygen, copper and chromium are also present in small amounts.

scholarly journals The porosity study of sintered products from electro-erosive materials of alloy Cr13, obtained in butyl alcohol

2020 ◽  
Vol 329 ◽  
pp. 02020
Author(s):  
S.V. Khardikov ◽  
A.N. Novikov ◽  
A.E. Ageeva
Keyword(s):  
Spark Plasma Sintering ◽  
Butyl Alcohol ◽  
Plasma Sintering ◽  
Spark Plasma

The article presents the results of a study of the porosity of sintered products from alloy X13 electroerosive materials obtained in butyl alcohol. It is shown that when hardening electroerosive materials from alloy X13 by the method of spark plasma sintering, the porosity was 3.347%.

scholarly journals Enhanced ferroelectricity and magnetoelectricity in 0.75BaTiO3-0.25BaFe12O19 by spark plasma sintering

2013 ◽  
Vol 7 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Adiraj Srinivas ◽  
Manivel Raja ◽  
Duraisamy Sivaprahasam ◽  
Padmanabam Saravanan
Keyword(s):  
Spark Plasma Sintering ◽  
Sintered Sample ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Plasma Sintering ◽  
Treated Sample ◽  
Spark Plasma ◽  
Magnetic Nature

Spark Plasma Sintering (SPS) technique was employed to synthesize 0.75BaTiO3-0.25BaFe12O19 composite. X-ray diffraction studies revealed that the composite consisted of both BaTiO3 (ferroelectric phase) and BaFe12O19 (ferrimagnetic phase), respectively. The SPS treated sample showed improved ferroelectric nature when compared to conventional sintered (CS) sample. Transformation from hard to soft magnetic nature was envisaged by magnetization measurements for SPS sample. A slim hysteresis loop was recorded with a low coercivity values (390 Oe) when compared to CS sample (3900 Oe). Mossbauer spectroscopy analysis indicated that the existence of a partial amount of ?-Fe2O3 phase in the lattice, giving rise to soft magnetic nature. The SPS sample showed slightly higher value of magnetoelectric output of 2.95 mV/cm at 3 kOe magnetic field when compared to the CS sample (1.45 mV/cm at 3 kOe). The present investigation compares the spark plasma sintered sample with the conventional sintered sample.

Microstructure and Mechanical Properties of Powder Steel 16Cr - 2Ni - Mn - Mo Obtained by Mechanical Alloying and Spark Plasma Sintering

2019 ◽  
Vol 822 ◽  
pp. 601-609 ◽  
Author(s):  
T.Y. Makhmutov ◽  
Nikolay G. Razumov ◽  
Aleksey I. Shamshurin
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Spark Plasma Sintering ◽  
Treatment Time ◽  
Powder Steel ◽  
Mechanically Alloyed ◽  
Microstructure And Mechanical Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Effect Of Treatment

The present work deals with investigation of the powder stainless steel Fe-16Cr-2Ni-Mo-Mn, obtained by mechanical alloying and the study of samples obtained from mechanically alloyed powders by spark plasma sintering. The effect of treatment time on the doping process was shown. The influence of sintering conditions on the microstructure and mechanical properties of the samples was revealed.

scholarly journals Influence of Sintering Strategy on the Characteristics of Sol-Gel Ba1−xCexTi1−x/4O3 Ceramics

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1675 ◽  
Author(s):  
Cătălina A. Stanciu ◽  
Ioana Pintilie ◽  
Adrian Surdu ◽  
Roxana Truşcă ◽  
Bogdan S. Vasile ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Structural Parameters ◽  
Sol Gel ◽  
Interfacial Polarization ◽  
Sintered Sample ◽  
Solute Content ◽  
Cerium Content ◽  
Plasma Sintering ◽  
Conventional Sintering ◽  
Spark Plasma

Single-phase Ce3+-doped BaTiO3 powders described by the nominal formula Ba1−xCexTi1−x/4O3 with x = 0.005 and 0.05 were synthesized by the acetate variant of the sol-gel method. The structural parameters, particle size, and morphology are strongly dependent on the Ce3+ content. From these powders, dense ceramics were prepared by conventional sintering at 1300 °C for 2 h, as well as by spark plasma sintering at 1050 °C for 2 min. For the conventionally sintered ceramics, the XRD data and the dielectric and hysteresis measurements reveal that at room temperature, the specimen with low cerium content (x = 0.005) was in the ferroelectric state, while the samples with significantly higher Ce3+ concentration (x = 0.05) were found to be in the proximity of the ferroelectric–paraelectric phase transition. The sample with low solute content after spark plasma sintering exhibited insulating behavior, with significantly higher values of relative permittivity and dielectric losses over the entire investigated temperature range relative to the conventionally sintered sample of similar composition. The spark-plasma-sintered Ce-BaTiO3 specimen with high solute content (x = 0.05) showed a fine-grained microstructure and an almost temperature-independent colossal dielectric constant which originated from very high interfacial polarization.

Spark Plasma Sintering of Boron Carbide and Effects of Various Additives on Sintering and Material Properties

2010 ◽  
Vol 63 ◽  
pp. 79-84 ◽  
Author(s):  
Yusuf Çelik ◽  
Gültekin Göller ◽  
Yücel Onüralp ◽  
Filiz Çinar Şahin
Keyword(s):  
Boron Carbide ◽  
Spark Plasma Sintering ◽  
Sintered Sample ◽  
Sem Analysis ◽  
Plasma Sintering ◽  
Density Values ◽  
Spark Plasma ◽  
Carbide Ceramics ◽  
Hardness Values ◽  
Sintering Method

The aim of this study was to produce dense and mechanically strong boron carbide ceramics with the help of different oxide additives. Physical properties of two different grades of pure boron carbide powders were analysed and sintered by Spark Plasma Sintering method. Starting powders were prepared by ball milling with the addition of 5 wt. % Y2O3, Al2O3, SiO2 and Y2O3 + Al2O3. In the sintering step, powder mixtures were sintered by SPS method in round-shaped graphite dies under 50 MPa for 5 minutes in the range of 1700-1800oC. In the characterization step, sintered sample compositions and microstructures were characterized by XRD and SEM analysis respectively. The hardness values were measured under 1000 g load and the density values were measured with Archimedes' principle. The fracture toughness analysis were also carried out.

Sign in / Sign up

Export Citation Format

Share Document