Effects of Ta2O5 and MgO additives on microstructure and mechanical properties of ultra-pure alumina ceramics

1988 ◽  
Vol 14 (3) ◽  
pp. 133-140 ◽  
Author(s):  
Cui Wanqiu ◽  
Zhang Yujuan ◽  
Zou Yun
Keyword(s):  
Mechanical Properties ◽  
Alumina Ceramics ◽  
Pure Alumina ◽  
Microstructure And Mechanical Properties

Microstructure and mechanical properties of alumina ceramics reinforced by boron nitride nanotubes

2011 ◽  
Vol 31 (13) ◽  
pp. 2277-2284 ◽  
Author(s):  
Wei-Li Wang ◽  
Jian-Qiang Bi ◽  
Shou-Ren Wang ◽  
Kang-Ning Sun ◽  
Ming Du ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Alumina Ceramics ◽  
Microstructure And Mechanical Properties

Effect of silver nanoparticles on the microstructure and mechanical properties of alumina ceramics

2017 ◽  
Vol 56 (3) ◽  
pp. 332-339 ◽  
Author(s):  
Enrique Rocha-Rangel ◽  
Azucena Pérez-de la Fuente ◽  
José A. Rodríguez-García ◽  
Ivanovich Estrada-Guel ◽  
Roberto Martínez-Sánchez
Keyword(s):  
Mechanical Properties ◽  
Silver Nanoparticles ◽  
Alumina Ceramics ◽  
Microstructure And Mechanical Properties

Effect of Sintering Schedule on the Microstructure of Carbon Nanotubes Reinforced Alumina Fabricated by SPS Method

2009 ◽  
Vol 66 ◽  
pp. 288-291
Author(s):  
Li Wei Huang ◽  
Zheng Yi Fu ◽  
Jin Yong Zhang ◽  
Wei Min Wang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
Raman Spectrum ◽  
Sintering Temperature ◽  
Alumina Ceramics ◽  
Pure Alumina ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

Carbon nanotubes reinforced alumina was fabricated by spark plasma sintering method. When adding 0.2wt% nanotubes, the fracture toughness of the composites prepared increases 19% compared with the pure alumina ceramics. The effect of sintering schedule on microstructure and mechanical properties is investigated systematically. Microstructure studies reveal that at high sintering temperature, the nanotubes tend to gather in the gaps surrounded by three or more grains in a flocculent state, which leads to poor mechanical properties. Raman spectrum indicates that long sintering duration may cause serious nanotubes destruction and lower the mechanical properties.

Effect of talc and titania on the microstructure and mechanical properties of alumina ceramics

2017 ◽  
Vol 15 (3) ◽  
pp. 633-642 ◽  
Author(s):  
Hui Yu ◽  
Zhihao Xu ◽  
Ziye Wei ◽  
Yongjun Chen ◽  
Jianbao Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Alumina Ceramics ◽  
Microstructure And Mechanical Properties

Nozzles from Alumina Ceramics with Submicron Structure Fabricated by Radial Pulsed Compaction

2007 ◽  
Vol 534-536 ◽  
pp. 1053-1056 ◽  
Author(s):  
A. Kaygorodov ◽  
Chang Kyu Rhee ◽  
Wheung Whoe Kim ◽  
Victor Ivanov ◽  
S. Paranin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Relative Density ◽  
Crystallite Size ◽  
Structural Characteristics ◽  
Average Crystallite Size ◽  
Alumina Ceramics ◽  
Pure Alumina ◽  
Al2o3 Powder ◽  
Channel Surface

By means of magnetic pulsed compaction and sintering of weakly aggregated alumina based nanopowders the jet forming nozzle samples for hydroabrasive cutting were fabricated. The ceramics were obtained from pure alumina, as well as from alumina, doped by TiO2, MgO and AlMg. The ceramic properties of the channel surface and the nozzle volume were investigated. It was shown that the samples sintered from AlMg doped Al2O3 powder had the best desired mechanical properties and structural characteristics: relative density ~0.97, channel microhardness – 18-20 GPa, channel surface roughness ~0.7 /m, average crystallite size ~1 /m.

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