Corrigendum to “Mechanical properties and residual stresses in ZrB2–SiC spark plasma sintered ceramic composites” [J. Eur. Ceram. Soc. 36 (June (7)) (2016) 1527–1537]

2016 ◽  
Vol 36 (14) ◽  
pp. 3545
Author(s):  
R. Stadelmann ◽  
M. Lugovy ◽  
N. Orlovskaya ◽  
P. Mchaffey ◽  
M. Radovic ◽  
...  
2016 ◽  
Vol 36 (7) ◽  
pp. 1527-1537 ◽  
Author(s):  
R. Stadelmann ◽  
M. Lugovy ◽  
N. Orlovskaya ◽  
P. Mchaffey ◽  
M. Radovic ◽  
...  

2002 ◽  
Vol 740 ◽  
Author(s):  
Mats Carlsson ◽  
Mats Johnsson ◽  
Annika Pohl

ABSTRACTCeramic composites containing 2 and 5vol. % of nanosized commercially available TiN and SiC particles in alumina were prepared via a water based slurry processing route followed by spark plasma sintering (SPS) at 75 MPa in the temperature range 1200–1600°C. Some of the samples could be fully densified by use of SPS already after five minutes at 1200°C and 75 MPa. The aim was to control the alumina grain growth and thus obtain different nano-structure types. The microstructures have been correlated to some mechanical properties; e.g. hardness and fracture toughness.


2018 ◽  
Vol 281 ◽  
pp. 125-130
Author(s):  
Nan Lu ◽  
Jia Xi Liu ◽  
Gang He ◽  
Jiang Tao Li

MgO/Graphene ceramic composites were fabricated by combining combustion synthesis with spark plasma sintering. MgO/Graphene mixture powders were prepared by the combustion reaction between Mg powders and CO2 gas. Dense MgO/Graphene composites were fabricated by spark plasma sintering (SPS) using LiF as the sintering additive. The effect of the sintering temperature on microstructure and mechanical properties of the prepared MgO/Graphene ceramics was discussed. The sintering temperature of the MgO/Graphene mixture powders increased from 900°C to 1300°C. The highest density of 3.43g/cm3 and hardness of 2133MPa were obtained at 1100°C. Compared with monolithic MgO ceramics, the hardness of MgO/Graphene ceramics at the same sintering temperature was increased from 840MPa to 2133MPa.


2014 ◽  
Vol 896 ◽  
pp. 570-573 ◽  
Author(s):  
Lydia Anggraini ◽  
Ryohei Yamamoto ◽  
Kazuma Hagi ◽  
Hiroshi Fujiwara ◽  
Kei Ameyama

In this research, several ceramic composites such as SiC-ZrO2, Al2O3-ZrO2, and Si3N4-ZrO2containing nominally equal ratio 1:1 were prepared through high energy mechanical milling and spark plasma sintering. The relationship of microstructure and mechanical properties were investigated. Harmonic microstructures consisting of fine and ultra-fine grains forming a network were obtained by the optimum milling time for 144ks with high mechanical properties. The non-milled powder mixtures and too long milling time powder mixtures have low mechanical properties sintered by spark plasma. The crack propagates through ultra-fine grains and deflected by larger fine grains were obtained on the harmonic microstructure sample resulting in high toughness. Thus, the harmonic microstructure can be considered a remarkable design tool for improving the mechanical properties of SiC-ZrO2, Al2O3-ZrO2, and Si3N4-ZrO2as well as other ceramic composites.


2014 ◽  
Vol 604 ◽  
pp. 258-261
Author(s):  
Nikolai Voltsihhin ◽  
Irina Hussainova ◽  
Jakob Kübarsepp ◽  
Rainer Traksmaa

Sintering behavior of ZrC-ZrO2 ceramic composites processed by vacuum and spark plasma sintering routines as well as mechanical properties of the obtained materials were studied in the present paper. It has been shown that both methods of the composites fabrication are suitable for producing ZrC-ZrO2 composites; however, SPS-ed composition gives somewhat higher hardness of the bulk.


2016 ◽  
Vol 42 (16) ◽  
pp. 18700-18710 ◽  
Author(s):  
Kunyang Fan ◽  
Jose Ygnacio Pastor ◽  
Jesus Ruiz-Hervias ◽  
Jonas Gurauskis ◽  
Carmen Baudin

Ceramics ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 359-371
Author(s):  
Hanzhu Zhang ◽  
Farid Akhtar

Ultra-high temperature ceramic composites have been widely investigated due to their improved sinterability and superior mechanical properties compared to monolithic ceramics. In this work, high-entropy boron-carbide ceramic/SiC composites with different SiC content were synthesized from multicomponent carbides HfC, Mo2C, TaC, TiC, B4C, and SiC in spark plasma sintering (SPS) from 1600 °C to 2000 °C. It was found that the SiC addition tailors the phase formation and mechanical properties of the high-entropy ceramic (HEC) composites. The microhardness and fracture toughness of the HEC composites sintered at 2000 °C were improved from 20.3 GPa and 3.14 MPa·m1/2 to 26.9 GPa and 5.95 MPa·m1/2, with increasing SiC content from HEC-(SiC)0 (0 vol. %) to HEC-(SiC)3.0 (37 vol. %). The addition of SiC (37 vol. %) to the carbide precursors resulted in the formation of two high-entropy ceramic phases with two different crystal structures, face-centered cubic (FCC) structure, and hexagonal structure. The volume fraction ratio between the hexagonal and FCC high-entropy phases increased from 0.36 to 0.76 when SiC volume fraction was increased in the composites from HEC-(SiC)0 to HEC-(SiC)3.0, suggesting the stabilization of the hexagonal high-entropy phase over the FCC phase with SiC addition.


2011 ◽  
Vol 189-193 ◽  
pp. 1681-1686 ◽  
Author(s):  
Jian Jun Sha ◽  
S. Ochiai ◽  
H. Okuda ◽  
S. Iwamoto ◽  
K. Morishita ◽  
...  

An image-based microscale analysis was conducted by using finite element method (FEM) to simulate the thermal residual stresses in directionally solidified eutectic (DSE) oxide ceramic composites from the thermal expansion and elastic properties and the microstructure features of the constituent phases. This microscale analysis allows a real simulation of morphologies of constituent phases such as size, array and shape. Meanwhile, this model can be applied not only for the calculation of thermal residual stresses, but also for the calculation of mechanical properties. In this work, simulations focus on the distribution of thermal residual stresses in the directionally solidified eutectic (DSE) Al2O3/ Y3Al5O12 (YAG) ceramic composite. A good agreement between simulated and measured thermal residual stresses was observed.


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