Influence of sintering temperature on microstructures of Nb/Nb5Si3 in situ composites synthesized by spark plasma sintering

2006 ◽  
Vol 413 (1-2) ◽  
pp. 73-76 ◽  
Author(s):  
Zhe Chen ◽  
YouWei Yan
Keyword(s):  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
In Situ Composites ◽  
Plasma Sintering ◽  
Spark Plasma

The Cu Matrix Strengthened by TiH2–C In-Situ Synthesized via Mechanical Milling and Spark Plasma Sintering

2021 ◽  
Vol 21 (4) ◽  
pp. 2687-2691
Author(s):  
Nguyen Thi ◽  
Hoang Oanh ◽  
Nguyen Hoang Viet
Keyword(s):  
Spark Plasma Sintering ◽  
Mechanical Milling ◽  
Sintering Temperature ◽  
Annealing Treatment ◽  
High Energy ◽  
Composite Powders ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Tic Nanoparticles

The present work is focused on the fabrication and the investigation of microstructures of copperbased TiC nanocomposites produced by mechanical milling in a high energy planetary ball mill. TiH2, carbon and copper powders were used as starting materials in which In-Situ reaction between carbon and TiH2 occurs to form TiC nanoparticles. The mixture powders of Cu–TiH2–C were milled for 12 h at 450 rpm in Argon gas. Annealing treatment process at 950 °C for 2 h was applied for as-milled composite powders to enhance In-Situ reaction. The consolidation of composite powders was conducted by spark plasma sintering under uniaxial pressing of 70 MPa. Sintering procedure was done at 950 and 1000 °C for 5 min. The results indicated that as TiC nanoparticles are formed after sintering at 950 °C and the TiC particles are increased up at higher sintering temperature of 1000 °C. Fracture surface of sintered samples shows ductile mode. HR-TEM image showed the crystal size of copper was about 10 nm for sample sintered at 1000 °C. The hardness and relative density of the nanocomposites increase when increasing sintering temperature.

Microstructural Characterization of In Situ TiB Whiskers in Ti MMCs Fabricated by SPS

2007 ◽  
Vol 336-338 ◽  
pp. 1310-1312
Author(s):  
Hai Bo Feng ◽  
De Chang Jia ◽  
Yu Zhou ◽  
Qing Chang Meng
Keyword(s):  
Electron Microscopy ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Microstructural Characterization ◽  
Average Diameter ◽  
Matrix Composites ◽  
Plasma Sintering ◽  
Transmission Electron ◽  
Spark Plasma

The in situ TiB whisker reinforced titanium matrix composites were prepared by mechanical alloying followed by spark plasma sintering. X-ray diffraction, scanning electron microscopy and transmission electron microscopy were used to characterize the microstructure of the TiB whiskers. The effect of sintering temperature on morphologies of in situ TiB whiskers was evaluated. With the increase of spark plasma sintering temperature, the average diameter of in situ TiB whiskers increased. The in situ TiB whiskers exhibited a hexagonal shape with (100), (101) and (10 1 ) planes at the transverse section and a growth orientation of [010]TiB direction.

Oxidation of Nb/Nb5Si3 In Situ Composites Fabricated via Spark Plasma Sintering with Al Addition

2013 ◽  
Vol 376 ◽  
pp. 49-53 ◽  
Author(s):  
Wen Yuan Long ◽  
Xiang Yan Zou ◽  
Wei Dong Wang ◽  
Jun Ping Yao
Keyword(s):  
Oxidation Resistance ◽  
Spark Plasma Sintering ◽  
Raw Materials ◽  
Oxidation Behaviour ◽  
X Ray Diffraction ◽  
In Situ Composites ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Al Addition

Dense Nb/Nb5Si3composites were fabricated via spark plasma sintering technology using Nb, Si, and Al elemental powders as raw materials. The microstructures of the synthesised composites were analysed through scanning electron microscopy, X-ray diffraction, and electron probe microanalysis. The results show that the composites consisted of residual Nb particle phase and Nb5Si3phase. The microstructure of the Nb/ Nb5Si3in situ composites was evidently affected by Al addition, which prompted the formation of the Al3Nb10Si3phase. The oxidation resistance of the Nb/Nb5Si3in situ composites significantly improved with the increase in Al addition. Pesting oxidation behaviour was exhibited at 800°C by the Nb-20Si composites when exposed to air for 4h. This pest oxidation behaviour is not exhibited by the Nb-20Si-10Al and Nb-20Si-15Al composites after exposure to air for ~10h. The composite exhibits the best oxidation resistance at 15at% Al.

scholarly journals In Vitro Corrosion Properties of Mg Matrix In Situ Composites Fabricated by Spark Plasma Sintering

Metals ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 358 ◽  
Author(s):  
Nguyen Q. Cao ◽  
Dinh N. Pham ◽  
Narita Kai ◽  
Hai V. Dinh ◽  
Sachiko Hiromoto ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Corrosion Properties ◽  
In Situ Composites ◽  
Plasma Sintering ◽  
Spark Plasma

In Situ TiB Reinforced Titanium Metal Matrix Composites Prepared by Spark Plasma Sintering

2005 ◽  
Vol 502 ◽  
pp. 189-194
Author(s):  
Yu Zhou ◽  
Hai Bo Feng ◽  
De Chang Jia
Keyword(s):  
Spark Plasma Sintering ◽  
Volume Fraction ◽  
Sintering Temperature ◽  
Matrix Composites ◽  
Titanium Matrix ◽  
Cubic Lattice ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Crystallographic Planes

In situ synthesized TiB reinforced titanium matrix composites of Ti-B and Ti-TiB2 systems have been prepared by spark plasma sintering at 800-1200 °C under 20 MPa for 5 min. The effects of sintering temperature and reinforcement volume fraction on flexural strength, Young’s modulus and fracture toughness of the composites were investigated. The in situ synthesized TiB reinforcements are randomly and uniformly distributed in titanium matrix. The TiB whiskers are aligned along [010] direction, and the crystallographic planes of the TiB needles are always of the type (100), (101) and (10 1) . The parallel TiB were observed in β-Ti grains in both of the investigated composites. The in situ TiB needle is likely to grow along [010] direction which is parallel to [111] direction of cubic lattice of β-Ti phase.

scholarly journals Process Optimization of In Situ Magnetic-Anisotropy Spark Plasma Sintering of M-Type-Based Barium Hexaferrite BaFe12O19

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2650
Author(s):  
Haetham G. Mohammed ◽  
Thar Mohammed Badri Albarody ◽  
Susilawati Susilawati ◽  
Soheil Gohari ◽  
Aris Doyan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Barium Hexaferrite ◽  
Optimum Process ◽  
Plasma Sintering ◽  
In Series ◽  
Spark Plasma ◽  
Measure Of Performance

This paper introduces a new spark plasma sintering technique that is able to order crystalline anisotropy by in-series/in situ DC electric coupled magnetic field. The process control parameters have been investigated on the production of anisotropic BaFe12O19 magnets based on resulted remanence (Mr). Sintering holding time (H.T.), cooling rate (C.R.), pressure (P), and sintering temperature (S.T.) are optimized by Taguchi with L9 orthogonal array (OA). The remanent magnetization of nanocrystalline BaFe12O19 in parallel (Mrǁ) and perpendicular (MrꞱ) to the applied magnetic field was regarded as a measure of performance. The Taguchi study calculated optimum process parameters, which significantly improved the sintering process based on the confirmation tests of BaFe12O19 anisotropy. The magnetic properties in terms of Mrǁ and MrꞱ were greatly affected by sintering temperature and pressure according to ANOVA results. In addition, regression models were developed for predicting the Mrǁ as well as MrꞱ respectively.

Sign in / Sign up

Export Citation Format

Share Document