scholarly journals Heterocoagulation and SPS sintering of sulfonitric-treated CNT and 8YZ nanopowders

2019 ◽  
Vol 7 (2) ◽  
pp. 238-246
Author(s):  
Sofía Gómez ◽  
Nicolás M. Rendtorff ◽  
Esteban F. Aglietti ◽  
Yoshio Sakka ◽  
Mehdi Estili ◽  
...  
Keyword(s):  
2019 ◽  
Vol 39 (10) ◽  
pp. 3213-3220 ◽  
Author(s):  
L.B. Caliman ◽  
D. Muche ◽  
A. Silva ◽  
C.A. Ospina R. ◽  
I.F. Machado ◽  
...  

2015 ◽  
Vol 1085 ◽  
pp. 312-315
Author(s):  
Oleg L. Khasanov ◽  
Edgar S. Dvilis ◽  
Zulfa G. Bikbaeva ◽  
Valentina V. Polisadova ◽  
Alexey O. Khasanov ◽  
...  

Ceramics samples in the form of a parallelepiped with high strength characteristics have been made. For the manufacture of the ceramics samples a powder mixture from submicron В4С powder with additives (1 wt%, 5 wt%, 10 wt%) of boron carbide nanopowder was used. The physical properties of the powder mixtures and strength properties of sintered ceramics have been studied. It was shown that the use of submicron fractions of the boron carbide powder together with nanoadditives is a determining factor in the formation of dense fine-grained structure providing improved physical and mechanical properties of the ceramics.


2016 ◽  
Vol 36 (5) ◽  
pp. 1221-1232 ◽  
Author(s):  
Benjamin Dargatz ◽  
Jesus Gonzalez-Julian ◽  
Martin Bram ◽  
Yutaka Shinoda ◽  
Fumihiro Wakai ◽  
...  

2005 ◽  
Vol 492-493 ◽  
pp. 761-764 ◽  
Author(s):  
Katsuto Kisara ◽  
Masayuki Niino ◽  
Hironori Noguchi

In this paper, we introduced research and development of technology of low cost production of FGMs. This research is designated for development of mass production technology for production of ceramic wares with induction heating (IH) function. Slurry lamination method has advantage in forming graded layers due to its simplicity and easiness. However, this method has a disadvantage to generate cracks during drying process. Therefore, freeze-dry in vacuum was introduced in drying process of slurry lamination. By doing so, mass production could be achieved. In this trial production, we adopted SPS sintering method to production technique. In the future, we will further develop other applications of FGMs into industrial products.


2007 ◽  
Vol 546-549 ◽  
pp. 2059-2062
Author(s):  
Lin Ma ◽  
Hong Li Suo ◽  
Ying Wang ◽  
Hong Xia Ma ◽  
Min Liu ◽  
...  

In-situ MgB2/Fe tapes were fabricated by the powder in tube (PIT) technology using Mg and B powders. The tapes were sintered by both an advanced spark plasma sintering (SPS) and a conventional vacuum furnace, respectively. The effects of these two sintering routes on the properties of the MgB2 tapes were investigated by the analysis of XRD, SEM and the magnetic Jc measurements. It was shown that at 10K, 0T, the magnetic Jc value of the tape sintered using SPS machine at 800°C for 15min under 30MPa were close to 106A/cm2, which was higher than that of the tapes annealed at 700°C for 2h under pressureless vacuum condition. It was found that the density and the homogeneity of the MgB2 core were strongly improved using SPS sintering process, which explained why the MgB2 tapes sintered by SPS method have a higher Jc value. Further enhancement of Jc in the tapes is expected for the understanding of the SPS sintering mechanism.


2003 ◽  
Vol 423-425 ◽  
pp. 249-252 ◽  
Author(s):  
Rui Zhang ◽  
Lian Gao ◽  
Yu Bai Pan ◽  
Li Dong Chen ◽  
Jing Kun Guo
Keyword(s):  

Ceramics ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 13-24 ◽  
Author(s):  
Venkata Ramana Mudinepalli ◽  
Feng Leng

In our previous work, we synthesized Pb(Zr0.52Ti0.48)O3 (PZT) ceramics by conventional and microwave sintering methods and studied their structural and electrical properties. We observed that the microwave sintered PZT ceramics show higher densification, fine and uniform grain size, higher dielectric constant, remnant polarization (Pr), and spontaneous polarization (Ps) in comparison to conventional sintered ones. In the present work, we studied the microstructure, phase formation, dielectric, ferroelectric and piezoelectric properties of the PZT ceramics synthesized by using Spark plasma Sintering (SPS) method. The SPS sintering temperature is lower (300 to 400 °C) than both conventional and microwave sintering methods. The dielectric constant at room temperature and at transition temperature shows higher values compared to the microwave and conventional sintering methods. This SPS sintering technique is currently attracting growing attention among productions engineers and materials researchers.


2014 ◽  
Vol 92 ◽  
pp. 31-34 ◽  
Author(s):  
Dewen Wang ◽  
Lu Shen ◽  
Songlin Ran ◽  
Qing Huang

2014 ◽  
Vol 682 ◽  
pp. 174-177
Author(s):  
T.S. Sameyshcheva ◽  
S.I Bysyina ◽  
Alexander Thömmes

Structural features of laminated “nickel - nickel aluminide” composite materials obtained by SPS - sintering of alternately stacked nickel and aluminum foil, thickness 100 and 25 m respectively, have been investigated in this paper. The composition of diffusion layers formed due to the reaction between nickel and aluminum was studied using energy dispersive X-ray microanalysis and X-ray diffraction methods. It was found that phase composition of diffusion layers significantly depends on SPS - sintering temperature.


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