Influence of TiN nanoparticle addition on microstructure and properties of Fe22Cr alloy fabricated by spark plasma sintering

2019 ◽  
Vol 103 (9-12) ◽  
pp. 4529-4540 ◽  
Author(s):  
Samuel Ranti Oke ◽  
Oladeji Oluremi Ige ◽  
Oluwasegun Eso Falodun ◽  
Avwerosuoghene M. Okoro ◽  
Mahlatse R. Mphahlele ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Synthesis, microstructure, and properties of high purity Mo2TiAlC2 ceramics fabricated by spark plasma sintering

2020 ◽  
Vol 9 (6) ◽  
pp. 759-768
Author(s):  
Yunhui Niu ◽  
Shuai Fu ◽  
Kuibao Zhang ◽  
Bo Dai ◽  
Haibin Zhang ◽  
...  
Keyword(s):  
Grain Size ◽  
Flexural Strength ◽  
Spark Plasma Sintering ◽  
Layered Structure ◽  
High Purity ◽  
High Fracture Toughness ◽  
Temperature Range ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

AbstractThe synthesis, microstructure, and properties of high purity dense bulk Mo2TiAlC2 ceramics were studied. High purity Mo2TiAlC2 powder was synthesized at 1873 K starting from Mo, Ti, Al, and graphite powders with a molar ratio of 2:1:1.25:2. The synthesis mechanism of Mo2TiAlC2 was explored by analyzing the compositions of samples sintered at different temperatures. It was found that the Mo2TiAlC2 phase was formed from the reaction among Mo3Al2C, Mo2C, TiC, and C. Dense Mo2TiAlC2 bulk sample was prepared by spark plasma sintering (SPS) at 1673 K under a pressure of 40 MPa. The relative density of the dense sample was 98.3%. The mean grain size was 3.5 μm in length and 1.5 μm in width. The typical layered structure could be clearly observed. The electrical conductivity of Mo2TiAlC2 ceramic measured at the temperature range of 2–300 K decreased from 0.95 × 106 to 0.77 × 106 Ω–1·m–1. Thermal conductivity measured at the temperature range of 300–1273 K decreased from 8.0 to 6.4 W·(m·K)–1. The thermal expansion coefficient (TEC) of Mo2TiAlC2 measured at the temperature of 350–1100 K was calculated as 9.0 × 10–6 K–1. Additionally, the layered structure and fine grain size benefited for excellent mechanical properties of low intrinsic Vickers hardness of 5.2 GPa, high flexural strength of 407.9 MPa, high fracture toughness of 6.5 MPa·m1/2, and high compressive strength of 1079 MPa. Even at the indentation load of 300 N, the residual flexural strength could hold 84% of the value of undamaged one, indicating remarkable damage tolerance. Furthermore, it was confirmed that Mo2TiAlC2 ceramic had a good oxidation resistance below 1200 K in the air.

Spark Plasma Sintering and Hot Pressing Sintering of Nanocrystalline WC-10CO-0.8VC

2007 ◽  
Vol 534-536 ◽  
pp. 1229-1232
Author(s):  
Li Hui Zhu ◽  
Guang Jie Shao ◽  
Yi Xiong Liu ◽  
Dave Siddle
Keyword(s):  
Relative Density ◽  
Spark Plasma Sintering ◽  
Hot Pressing ◽  
Nanocrystalline Powders ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Hot Pressing Sintering

WC-10Co-0.8VC nanocrystalline powders were sintered by spark plasma sintering (SPS) and hot pressing sintering (HPS), and the microstructure and properties were compared. Results show that, sintered at 1300°C, the sample prepared by SPS for only 3 minutes has higher density than that prepared by HPS for 60 minutes. SEM and SPM observation shows SPS at 1200°C has a more uniform and finer microstructure, and most of the WC grains are smaller than 100nm. It has a relative density of 95.1%, HV30 of 1887, and KIC of 11.5 MPam1/2. If a suitable sintering parameter is chosen, SPS is a promising consolidation technique to prepare nanocrystalline WC-10Co-0.8VC with improved properties.

Microstructure and properties of Cu-10 wt.% Al bronze obtained by high-energy mechanical milling and spark plasma sintering

2022 ◽  
pp. 131671
Author(s):  
Dina V. Dudina ◽  
Tatyana F. Grigoreva ◽  
Vyacheslav I. Kvashnin ◽  
Evgeniya T. Devyatkina ◽  
Sergey V. Vosmerikov ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Mechanical Milling ◽  
High Energy ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

Microstructure and properties of ZrB2–SiC composites prepared by spark plasma sintering using TaSi2 as sintering additive

2010 ◽  
Vol 30 (12) ◽  
pp. 2625-2631 ◽  
Author(s):  
Chunfeng Hu ◽  
Yoshio Sakka ◽  
Hidehiko Tanaka ◽  
Toshiyuki Nishimura ◽  
Shuqi Guo ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure And Properties ◽  
Sintering Additive ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sic Composites

Densification, microstructure and properties of TiB2 ceramics fabricated by spark plasma sintering

2018 ◽  
Vol 145 ◽  
pp. 435-443 ◽  
Author(s):  
Özge Balcı ◽  
Ulrich Burkhardt ◽  
Marcus Schmidt ◽  
Jürgen Hennicke ◽  
M. Barış Yağcı ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma

Synthesis, microstructure and properties of MoAlB ceramics prepared by in situ reactive spark plasma sintering

2020 ◽  
Vol 46 (10) ◽  
pp. 15214-15221 ◽  
Author(s):  
Xiaojia Su ◽  
Jian Dong ◽  
Longsheng Chu ◽  
Hongliang Sun ◽  
Salvatore Grasso ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma
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