scholarly journals Alumina matrix ceramic-nickel composites formed by centrifugal slip casting

2015 ◽  
Vol 9 (4) ◽  
pp. 199-202 ◽  
Author(s):  
Justyna Zygmuntowicz ◽  
Aleksandra Miazga ◽  
Katarzyna Konopka ◽  
Katarzyna Edrysiak ◽  
Waldemar Kaszuwara
Keyword(s):  
Composite Materials ◽  
Rotation Axis ◽  
Quantitative Description ◽  
Slip Casting ◽  
Metal Particles ◽  
Alumina Matrix ◽  
Casting Method ◽  
Composite Fabrication ◽  
Nickel Particles ◽  
Nickel Composites

The paper is focused on the possibility of fabricating the alumina matrix ceramic-nickel composites with gradient concentration of metal particles. Centrifugal slip casting method was chosen for the composite fabrication. This method allows fabrication of the graded distribution of nickel particles in the hollow cylinder composites. The horizontal rotation axis was applied. The samples were characterized by XRD, SEM and quantitative description of the microstructure. The macroscopic as well as SEM observations of the prepared composites confirmed the gradient concentration of Ni particles in the composite materials. The application of the centrifugal slip casting method allows for the graded distribution of metal particles in the samples.

scholarly journals Zirconia–Alumina Composites Obtained by Centrifugal Slip Casting as Attractive Sustainable Material for Application in Construction

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 250
Author(s):  
Justyna Zygmuntowicz ◽  
Justyna Tomaszewska ◽  
Radosław Żurowski ◽  
Marcin Wachowski ◽  
Paulina Piotrkiewicz ◽  
...  
Keyword(s):  
Slip Casting ◽  
Sintering Process ◽  
Alumina Matrix ◽  
X Ray Diffraction ◽  
Casting Method ◽  
Zro2 Content ◽  
Stereological Analysis ◽  
Alumina Composite ◽  
Alumina Composites ◽  
Sintered Materials

This paper focuses on the possibility of adapting the centrifugal slip casting method to obtain zirconia–alumina composite materials in the form of finished tube-shaped products. These types of products, due to their unique properties, can be utilised, for example, in the transport of aggressive substances, even in extreme temperatures or corrosive conditions. The study reports on the two series of zirconia–alumina composites differing in the content of ZrO2—2.5 and 25 vol%. The fabricated and sintered materials were characterised using scanning electron microscopy (SEM), X-ray diffraction (XRD) and stereological analysis. Moreover, a life cycle assessment (LCA) was provided in accordance with the requirements of the ISO 14044 and EN 15805 standards. The obtained data clearly show that the centrifugal slip casting method allows obtaining samples with high density and extremely uniform distribution of the ZrO2 phase in the alumina matrix. The stereological analysis results proved also that the addition of ZrO2 is effective in reducing the growth of Al2O3 grains during the sintering process. The phase analysis carried out by means of XRD showed that during the sintering process, in the case of composites with a lower ZrO2 content (2.5 vol%), the monoclinic to tetragonal transformation of ZrO2 was total, while for samples containing 25 vol% ZrO2, the monoclinic phase remained in a small amount in the final product.

scholarly journals Effect of Palm Stearin binder to the Mechanical Properties of Alumina using Slip Casting Method

2020 ◽  
Vol 834 ◽  
pp. 012059
Author(s):  
M N Halmy ◽  
S K Alias ◽  
M A Mat Shah ◽  
M K Maryam ◽  
M A Abu Bakar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Slip Casting ◽  
Palm Stearin ◽  
Casting Method

Residual stresses in Al2O3/Y-TZP Ceramic Laminates Fabricated by Tape and Slip Casting

2008 ◽  
Vol 571-572 ◽  
pp. 327-332 ◽  
Author(s):  
Jesus Ruiz-Hervias ◽  
Giovanni Bruno ◽  
Jonas Gurauskis ◽  
A.J. Sanchez-Herencia ◽  
C. Baudin
Keyword(s):  
Residual Stress ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Volume Fraction ◽  
Tape Casting ◽  
Slip Casting ◽  
Ceramic Composites ◽  
Processing Route ◽  
Alumina Matrix ◽  
Stress Profiles

Residual stress profiles were measured by neutron diffraction in Al2O3/Y-TZP ceramic composites containing 5 and 40 vol.% Y-TZP fabricated by conventional slip casting and by a novel tape casting route. Residual stresses in the zirconia are tensile and increase as its volume fraction decreases. For the alumina matrix, residual stress is compressive and increases with the zirconia volume fraction. In the composite with 5 vol.% zirconia, the processing route does not have an influence on residual stresses. However, in the composite with 40 vol.% zirconia, residual stresses are different in the samples obtained by both processing routes.

scholarly journals Rocess Design of Fiber Reinforced Magnesium Matrix Composites

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Ding Hualun
Keyword(s):  
Composite Materials ◽  
Matrix Composites ◽  
Deposition Method ◽  
Fiber Reinforced ◽  
Casting Method ◽  
Magnesium Matrix ◽  
Preparation Methods ◽  
Magnesium Matrix Composites ◽  
The Matrix ◽  
And Performance

This paper chooses magnesium as the matrix of composite materials, selects carbon fi ber as reinforcement, anddesigns the composite scheme according to the structure and performance of Mg-based composites. The performancecharacteristics and application prospect of fiber-reinforced magnesium matrix composites are introduced. Wait. Inthis paper, the process of preparing carbon fi ber magnesium matrix composites by compression casting method andspray deposition method is designed. The process fl ow chart of these two design schemes is determined by analyzingthe principle of these two kinds of preparation methods, and the specifi c problems of the process are analyzed andsummarized.

Fabrication of Mambong Pottery by Using Slip Casting Method

2021 ◽  
Vol 4 (2) ◽  
pp. 64-67
Author(s):  
A.I.A. Termizi ◽  
J.J. Mohamed
Keyword(s):  
Specific Gravity ◽  
Water Content ◽  
Sodium Silicate ◽  
Slip Casting ◽  
Linear Shrinkage ◽  
Optimum Composition ◽  
Casting Method ◽  
Traditional Technique ◽  
Clay Slip

Mambong pottery in Kuala Krai, Kelantan is one of the types of potteries in Malaysia other than Sayong, Terenang and Sarawak pottery. Mambong pottery was being made by traditional technique like pinching and throwing. In this research, Mambong pottery was made by using slip casting method. This method used porous mould which can absorb the water content from the clay slip. Different composition of water and clay was used and its effect on product properties was investigated. Samples with different composition of water and clay were labelled as 50C50W, 60C40W, 70C30W and 80C20W samples with addition of 0.7% of sodium silicate, Na2SiO3. The samples were characterized by its specific gravity (S.G.) of clay slip, drying and firing linear shrinkage, density and porosity and strength of the clay samples. Finding from this research showed that 70C30W sample is the optimum composition in fabricating pottery by using slip casting among other samples.

Sustainable ZTA composites produced by an advanced centrifugal slip casting method

2022 ◽  
Author(s):  
Radosław Żurowski ◽  
Justyna Zygmuntowicz ◽  
Justyna Tomaszewska ◽  
Urszula Ulkowska ◽  
Paulina Piotrkiewicz ◽  
...  
Keyword(s):  
Slip Casting ◽  
Casting Method

Sem and Tem Studies of NiAl2O4 Spinel Phase Distribution in Alumina Matrix

2013 ◽  
Vol 58 (2) ◽  
pp. 501-504 ◽  
Author(s):  
K. Konopka ◽  
L. Litynska-Dobrzynska ◽  
J. Dutkiewicz
Keyword(s):  
Fracture Toughness ◽  
Phase Distribution ◽  
Spinel Phase ◽  
Metal Particles ◽  
Alumina Matrix ◽  
Sem And Tem ◽  
Alumina Matrix Composite ◽  
Composite Properties ◽  
Almost Continuous ◽  
Properties Of Composites

Methods of enhancing of mechanical properties of ceramic-metal composites, particularly fracture toughness by introducing dispersed metal particles such as W, Mo, Ni, Al, etc to a ceramic matrix are well known. However, the dependence of the microstructures, especially interfaces, on the properties of composites is not well understood yet. Moreover, the ceramic-metal interfaces play a crucial role in tailoring the composite properties. In this paper we examine the alumina matrix composite with NiAl2O4 spinel phase and present the SEM and TEM studies of spinel distribution, size and crystallographic orientation. The composites were prepared by sintering Al2O3 and Ni powders below the melting point of Ni in argon. During the process of sintering the spinel phase appeared. It was not homogeneously distributed in the alumina matrix. The spinel phase areas were linked together and constituted an almost continuous form. We observed that the distribution and size of spinel influenced the fracture toughness of the composite.

Influence of Metal Oxides Additives on the Porous Mullite Ceramics

2014 ◽  
Vol 604 ◽  
pp. 293-296 ◽  
Author(s):  
Ludmila Mahnicka-Goremikina ◽  
Ruta Svinka ◽  
Visvaldis Svinka
Keyword(s):  
Thermal Conductivity ◽  
Metal Oxides ◽  
Slip Casting ◽  
Casting Method ◽  
Mullite Phase ◽  
Porous Mullite ◽  
Positive Effect ◽  
Dominant Phase ◽  
Mullite Ceramics

The porous mullite ceramics doped with such metal oxides as ZrO2, WO3 and MgO in quantity of 5 wt% were prepared by slip casting method. The mullite phase was the main and dominant phase of ZrO2-, WO3- and MgO-doped samples, which were sintered at the temperatures of 1650°C, 1500°C, respectively. The ZrO2, WO3 and MgO had the positive effect on the increase of porosity and decrease of thermal conductivity of porous mullite ceramics and the degree of this effect was in the order of ZrO2<MgO<WO3.

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