In Situ Formation of Extremely High Corrosion Resistant Ni–Ni3Si Nanocomposite Coating Using Spark Plasma Sintering and Subsequent Heat Treatment

2020 ◽  
Author(s):  
Hossein Hassannejad ◽  
Ashkan Nouri ◽  
Mohammad Hossein Assari ◽  
Seyed Hani Mirfalah ◽  
Mansour Bozorg
Keyword(s):  
Heat Treatment ◽  
Spark Plasma Sintering ◽  
Nanocomposite Coating ◽  
Subsequent Heat Treatment ◽  
Corrosion Resistant ◽  
High Corrosion ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
In Situ Formation

scholarly journals Microstructural Properties of Nb-Si Based Alloys Manufactured by Powder Metallurgy

2011 ◽  
Vol 278 ◽  
pp. 533-538 ◽  
Author(s):  
Stefan Drawin ◽  
J.P. Monchoux ◽  
J.L. Raviart ◽  
Alain Couret
Keyword(s):  
Heat Treatment ◽  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
Hot Extrusion ◽  
Conventional Technique ◽  
Subsequent Heat Treatment ◽  
Microstructural Properties ◽  
Niobium Silicide ◽  
Plasma Sintering ◽  
Spark Plasma

An NbTiHfCrAlSi niobium silicide based atomized powder has been compacted by a conventional technique (hot extrusion) and by spark plasma sintering to nearly fully dense alloys. Both materials exhibit a metastable fine micrometer-sized microstructure that has been coarsened by a subsequent heat treatment. The densification of the SPS sample takes place between ca. 800°C and 1300°C.

scholarly journals Mechanical properties of phase-pure bulk Ta4AlC3 prepared by spark plasma sintering and subsequent heat treatment

2021 ◽  
Vol 15 (3) ◽  
pp. 211-218
Author(s):  
Guobing Ying ◽  
Cong Hu ◽  
Lu Liu ◽  
Cheng Sun ◽  
Dong Wen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Spark Plasma Sintering ◽  
Treatment Time ◽  
Raw Materials ◽  
Subsequent Heat Treatment ◽  
Plasma Sintering ◽  
Spark Plasma

High-purity and bulk Ta4AlC3 ceramics were successfully fabricated by spark plasma sintering (SPS) and subsequent heat treatment, using the raw materials including TaC and Ta2AlC powders. These raw materials were first synthesized by self-propagation high temperature synthesis from elements tantalum, aluminium and carbon black powders, followed by pressure-less sintering. The as-fabricated bulk Ta4AlC3 was relatively stable when subjected to heat treatment at elevated temperature of 1500?C. Moreover, prolonging the heat treatment time resulted in bigger grain sizes and higher densities of the Ta4AlC3. The flexural strength and the fracture toughness of the Ta4AlC3 fabricated by SPS were found to be 411MPa and 7.11MPa?m1/2, respectively. After the heat treatment at 1500?C for 8 h, the flexural strength and the fracture toughness of the Ta4AlC3 could reach 709MPa and 9.23MPa?m1/2, respectively. The special structural characteristics of the ternary ceramics and the increase of density after the heat treatment are the main reasons for the variation in mechanical properties of ternary ceramics.

scholarly journals A rapid route to fabricate in situ TiB-whisker-reinforced Ti-6Al-4V alloy composites by spark plasma sintering and heat treatment

2020 ◽  
Vol 6 (12) ◽  
pp. 1265d3
Author(s):  
Hao Wang ◽  
Zheng-Yang Hu ◽  
Xing-Wang Cheng ◽  
Zhao-Hui Zhang ◽  
Qi Song ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Microstructure and properties of nano-laminated Y3Si2C2 ceramics fabricated via in situ reaction by spark plasma sintering

2021 ◽  
Vol 10 (3) ◽  
pp. 578-586
Author(s):  
Lin-Kun Shi ◽  
Xiaobing Zhou ◽  
Jian-Qing Dai ◽  
Ke Chen ◽  
Zhengren Huang ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Atomic Scale ◽  
Max Phase ◽  
X Ray Diffraction ◽  
Selected Area Electron Diffraction ◽  
Plasma Sintering ◽  
Transmission Electron ◽  
Spark Plasma ◽  
Diffraction Patterns

AbstractA nano-laminated Y3Si2C2 ceramic material was successfully synthesized via an in situ reaction between YH2 and SiC using spark plasma sintering technology. A MAX phase-like ternary layered structure of Y3Si2C2 was observed at the atomic-scale by high resolution transmission electron microscopy. The lattice parameters calculated from both X-ray diffraction and selected area electron diffraction patterns are in good agreement with the reported theoretical results. The nano-laminated fracture of kink boundaries, delamination, and slipping were observed at the tip of the Vickers indents. The elastic modulus and Vickers hardness of Y3Si2C2 ceramics (with 5.5 wt% Y2O3) sintered at 1500 °C were 156 and 6.4 GPa, respectively. The corresponding values of thermal and electrical conductivity were 13.7 W·m-1·K-1 and 6.3×105 S·m-1, respectively.

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