scholarly journals MPFEM Modeling on the Compaction of Al/SiC Composite Powders with Core/Shell Structure

2018 ◽  
Author(s):  
Xizhong An ◽  
Yu Liu ◽  
Fen Huang ◽  
Qian Jia
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Composite Powders ◽  
Core Shell Structure

Preparation of Amorphous Calcium Phosphate/Triclcium Silicate Composite Powders

2009 ◽  
Vol 79-82 ◽  
pp. 1643-1646 ◽  
Author(s):  
Qing Lin ◽  
Yan Bao Li ◽  
Xiang Hui Lan ◽  
Chun Hua Lu ◽  
Zhong Zi Xu
Keyword(s):  
Calcium Phosphate ◽  
Shell Structure ◽  
Amorphous Calcium Phosphate ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Composite Powders ◽  
X Ray ◽  
Core Shell Structure

The amorphous calcium phosphate (ACP)/tricalcium silicate (Ca3SiO5, C3S) composite powders were synthesized in this paper. The exothermal behavior of C3S determined by isothermal conduction calorimetry indicated that the ACP could be synthesis by chemical precipitation method during the induction period (stage II) of C3S. The composite powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results indicated that nanosized ACP particles deposited on the surface of C3S particles to form core-shell structure at pH=10.5, and the nCa/nP of ACP could be controlled between 1.0 and 1.5. The core-shell structure is stable after sintered at 500 oC for 3 h to remove the β-cyclodextrin (β-CD). As compared with the irregular C3S particles (1~5 μm), the composite powders particles are spherical with a diameter of 40~150 μm. Therefore, to obtain the smaller size of composite powders, it is expected to avoid the aggregate of C3S particles in the aqueous solution by addition of dispersant. As compared with C3S, the composite powders may contribute better injectability, strength and biocompatibility.

Synthesis of TiN–TiB2–hBN composite powders with a core-shell structure and preparation of bulk samples

2021 ◽  
pp. 102783
Author(s):  
Shi Tian ◽  
Wenchao Guo ◽  
Qianglong He ◽  
Aiyang Wang ◽  
Tian Tian ◽  
...  
Keyword(s):  
Shell Structure ◽  
Core Shell ◽  
Composite Powders ◽  
Core Shell Structure

Fabrication of Nano-Al2O3/Ni Composite Particle with Core-Shell Structure by a Modified Electroless Plating Process

2012 ◽  
Vol 455-456 ◽  
pp. 49-54
Author(s):  
Hai Zhong Zheng ◽  
Yan Mo ◽  
Wen Bin Liu
Keyword(s):  
Ultrasonic Wave ◽  
Electroless Plating ◽  
Shell Structure ◽  
Composite Particle ◽  
Electroless Nickel ◽  
Core Shell ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Composite Powders ◽  
Core Shell Structure

Ni/Al2O3nanoparticles with core-shell structure were fabricated by a new route for electroless nickel plating. It is found that ultrasonic radiation can promote the plating reaction more efficiently. The Ni-coated Al2O3composite powders with a core-shell structure were synthesized and the thin Ni layer on the a-Al2O3powder was about 5 nm thick. However, during electroless nickel plating without ultrasonic wave treatment, a core-shell structure was also formed, but aggregation of the particles and self-decomposition were observed.

Effect of CNTs on Mechanical Properties of SiCp/Cu Composites

2014 ◽  
Vol 602-603 ◽  
pp. 590-593
Author(s):  
Chen Yang Wang ◽  
Bing Bing Fan ◽  
Bing Sun ◽  
Bin Bin Wang ◽  
Wen Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Shell Structure ◽  
Volume Fraction ◽  
Composite Particles ◽  
Core Shell ◽  
Maximum Hardness ◽  
Composite Powders ◽  
The Core ◽  
Core Shell Structure

SiCp/Cu composites were prepared by vacuum hot-pressing at 770°C for 1.5 h under the pressure of 30MPa. The composites were enhanced by CNTs with different volume fractions from 0 vol. % to 4 vol. %. Three-step approach wrapping process was introduced to prepare composite powders. XRD and SEM techniques were used to characterize the samples. It is found that the core-shell structure composed of SiC core and Cu shell was formed in the composite particles. Optimized volume fraction of CNTs is 1 vol. %. Minimum Porosity and maximum Hardness is about 0.84% and 2.31GPa, respectively. But maximum Flexural strength was measured as 248MPa for samples containing 2 vol. % CNTs. Flexural strength was improved by the bridge effect caused by the increased CNTs.

Electrical Conductivity of Ni-YSZ Anode for SOFCs According to the Ni Powder Size Variations in Core-shell Structure

2015 ◽  
Vol 53 (4) ◽  
pp. 287-293
Author(s):  
Byung-Hyun Choi ◽  
Young Jin Kang ◽  
Sung-Hun Jung ◽  
Yong-Tae An ◽  
Mi-Jung Ji
Keyword(s):  
Electrical Conductivity ◽  
Shell Structure ◽  
Core Shell ◽  
Powder Size ◽  
Ni Powder ◽  
Core Shell Structure

Preparation of Porous Core/Shell Structure Fe$lt;inf$gt;2$lt;/inf$gt;O$lt;inf$gt;3$lt;/inf$gt;/Al Nanothermite Membrane by Template Method

2015 ◽  
Vol 30 (6) ◽  
pp. 610 ◽  
Author(s):  
ZHENG Guo-Qiang ◽  
ZHANG Wen-Chao ◽  
XU Xing ◽  
SHEN Rui-Qi ◽  
DENG Ji-Ping ◽  
...  
Keyword(s):  
Shell Structure ◽  
Template Method ◽  
Core Shell ◽  
Porous Core ◽  
Core Shell Structure

Functional properties of BaTiO3–Ni0.5Zn0.5Fe2O4 magnetoelectric ceramics prepared from powders with core-shell structure

2010 ◽  
Vol 107 (10) ◽  
pp. 104106 ◽  
Author(s):  
L. P. Curecheriu ◽  
M. T. Buscaglia ◽  
V. Buscaglia ◽  
L. Mitoseriu ◽  
P. Postolache ◽  
...  
Keyword(s):  
Functional Properties ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure
Sign in / Sign up

Export Citation Format

Share Document