A-14 THE EFFECT OF SINTERING TEMPERATURE ON MECHANICAL STRENGTH OF ZIRCONIA SINTERED COMPONENT(Session: Ceramics III)

2006 ◽  
Vol 2006 (0) ◽  
pp. 14 ◽  
Author(s):  
Aidah Jumahat ◽  
M. Hussain Ismail ◽  
M. Affendi Shaari
Keyword(s):  
Mechanical Strength ◽  
Sintering Temperature

scholarly journals Fabrication of Porous Al2O3 Ceramics with Submicron-Sized Pores Using a Water-Based Gelcasting Method

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1784 ◽  
Author(s):  
Zhihong Yang ◽  
Nan Chen ◽  
Xiaomei Qin
Keyword(s):  
Mechanical Strength ◽  
Water Content ◽  
Sintering Temperature ◽  
Al2o3 Content ◽  
Volume Fractions ◽  
Pore Sizes ◽  
Water Based ◽  
Low Levels ◽  
Median Pore

The gelcasting method is usually employed to fabricate relatively dense ceramics. In this work, however, porous Al2O3 ceramics with submicron-sized pores were fabricated using the water-based gelcasting method by keeping the Al2O3 content at low levels. By controlling the water content in the ceramic slurries and the sintering temperature of the green samples, the volume fractions and the size characteristics of the pores in the porous Al2O3 can be readily obtained. For the porous Al2O3 ceramics prepared with 30 vol.% Al2O3 content in the slurries, their open porosities were from 38.3% to 47.2%, while their median pore sizes varied from 299.8 nm to 371.9 nm. When there was more Al2O3 content in the slurries (40 vol.% Al2O3), the porous Al2O3 ceramics had open porosities from 37.0% to 46.5%, and median pore sizes from 355.4 nm to 363.1 nm. It was found that a higher sintering temperature and Al2O3 content in the slurries increased the mechanical strength of the porous Al2O3 ceramics.

Mechanical strength characterization and modeling of hydroxyapatite/tricalcium phosphate biocomposite using the diametral-compression test

2021 ◽  
Vol 93 (3) ◽  
pp. 30403
Author(s):  
Mohammed Es-Saddik ◽  
Said Laasri ◽  
Abdelaziz Laghzizil ◽  
Jean-Michel Nunzi ◽  
Mohammed Taha ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Tricalcium Phosphate ◽  
Sintering Temperature ◽  
Rupture Strength ◽  
Mechanical Resistance ◽  
The Finite Element Method ◽  
Maximum Value ◽  
Strength Characterization ◽  
Powder Manufacturing ◽  
Diametral Compression Test

This study reports the enhanced mechanical resistance of the composite bioceramics of hydroxyapatite (HAP) and tricalcium phosphate (β-TCP) used as bone substitute. HAP/β-TCP mixture was prepared by wet mixing of powders and characterized. Effects of powder manufacturing and sintering temperature on the densification, microstructure and mechanical properties of the composite were studied. The rupture strength (σr) was calculated using the Brazilian test. At 1250 °C, the relative density and mechanical strength of the HAP/β-TCP ceramics reached the maximum value of 89% and 43 MPa, respectively. Experimental results were modeled by the finite element method to determine the stress distribution in the compacted disc.

Microstructure and Properties of Spark Plasma Sintering AlN/BN Ceramics

2006 ◽  
Vol 313 ◽  
pp. 105-108 ◽  
Author(s):  
Lian Meng Zhang ◽  
Mei Juan Li ◽  
Qiang Shen ◽  
T. Li ◽  
M.Q. Yu
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Mechanical Strength ◽  
Spark Plasma Sintering ◽  
Volume Fraction ◽  
Sintering Temperature ◽  
Composite Ceramics ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Full Densification

Aluminum nitride-boron nitride (AlN/BN) composite ceramics were prepared by spark plasma sintering (SPS). The sintering behaviors of AlN/BN composites with 5~15% volume fraction of BN were studied. The influences of BN content, as well as the sintering temperature on the density, microstructure, mechanical strength, thermal conductivity and machinability of the composites were also investigated. The results showed that the full densification of AlN/BN composite ceramics could be realized by SPS technique at the temperature no higher than 1800°C for 3 minutes. The thermal conductivity of AlN/BN composites is in the range of 66~79W/mK, and AlN/BN composites can be cut or drilled by carbides or even steel tools when BN content is 15% volume fraction. The mechanical strength of AlN/BN composites is about 330MPa and is not remarkably affected by the addition of BN. The improvement of mechanical properties of AlN/BN composite ceramics is due to the fine and homogenous microstructure developed in the SPS process.

scholarly journals Elaboration of Architectured Materials by Spark Plasma Sintering

2012 ◽  
Vol 706-709 ◽  
pp. 1885-1892 ◽  
Author(s):  
Damien Fabrègue ◽  
Bassem Mouawad ◽  
Cyril Buttay ◽  
Maher Soueidan ◽  
Aude Lamontagne ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Pure Copper ◽  
Physical Processes ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Innovative Materials ◽  
Architectured Materials ◽  
Short Time

Spark plasma sintering has been used for decades in order to consolidate a wide variety of materials and permitting to obtain fully dense specimens. This technique has been mainly applied to ceramics. This paper concentrates on an unusual use of spark plasma sintering system: obtaining innovative materials especially architectured ones. Different applications are presented. Firstly, the SPS technique has been used to elaborate nanometers grain size materials or containing nanoscale microstructure. This is possible since the sintering temperature and the holding time are far lower in the SPS compared to other techniques. Then SPS has been used to realize diffusion bonding. In that case again, bonding can be realized at low temperature and for short time. It permits for example to realize bonding between two copper layers which is of a great importance for microelectronic applications. It is worth noting that this bonding can have the same mechanical strength as pure copper even for diffusion time of a few minutes. Secondly, bonding has been also carried out between a metallic layer and a ceramic one. This could lead to design of new layered materials combining interesting properties in terms of mechanical strength but also in terms of electrical resistance. The SPS machine has also been used to obtain porous materials (cobalt alloys or copper) with an adapted microstructure (porosity, tortuosity,). These structures could open new perspectives for biomedical or for microelectronic applications. All these examples lead to a better understanding of the physical processes which happen during spark plasma sintering.

Preparation and Characterization of Al2TiO5- Si3N4 Composites by Reaction Sintering Process

2011 ◽  
Vol 284-286 ◽  
pp. 201-204
Author(s):  
Rui Sheng Wang ◽  
Jun Hong Zhao ◽  
Heng Yong Wei ◽  
Shao Wei Yao
Keyword(s):  
Mechanical Strength ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Reaction Sintering ◽  
Sintering Process ◽  
Soaking Time ◽  
Sintering Properties ◽  
The One

Al2TiO5-Si3N4 composites were prepared by reaction sintering process using Al2TiO5 and α-Si3N4 powders as raw materials. The effect ofsintering temperature, soaking time and Si3N4 content on the sintering properties of the composites was studied. The results showed that the best sintering temperature and soaking time were 1550 °C and 2 h, respectively. The samples with 15 wt% of Si3N4 addition had good sintering properties, and its mechanical strength was 28.96 MPa, which was 2 times of the one of the samples without Si3N4 addition.

scholarly journals Effect of sintering temperature on the crystal growth, microstructure and mechanical strength of foam glass-ceramic from waste materials

2020 ◽  
Vol 9 (3) ◽  
pp. 5640-5647 ◽  
Author(s):  
Dur Iffa Saparuddin ◽  
Noor Aizat Noor Hisham ◽  
Sidek Ab Aziz ◽  
Khamirul Amin Matori ◽  
Sawao Honda ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Mechanical Strength ◽  
Glass Ceramic ◽  
Sintering Temperature ◽  
Foam Glass ◽  
Waste Materials

Thermoelectric Properties of Bismuth Telluride Based Materials Prepared by Powder Metallurgy Processing

2007 ◽  
Vol 336-338 ◽  
pp. 864-867
Author(s):  
Wei Ren ◽  
Xue Quan Liu ◽  
Xiao Lin Wang ◽  
Hong Yi Jiang
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Strength ◽  
Thermoelectric Properties ◽  
Bismuth Telluride ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Sintering Temperature ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
P Type

Polycrystalline samples of Bi2Te3 based alloys were prepared by powder metallurgy processing including a melting-grinding and a sintering procedure of compacted pellets. Two sintering procedures as hot-pressing and spark plasma sintering (SPS) were employed. The thermoelectric properties and mechanical strength were measured in all case. Thermoelectric properties for p-type (Bi0.25Sb0.75)2Te3 and n-type Bi2(Te0.2Se0.8)3 changed with sintering temperature in both sintering methods. Mechanical strength and relative density increase with sintering temperature in two sintering procedures. The results firmly suggest that both sintering procedures are promising to obtain high performance thermoelectric materials.

Clay Ceramic Support Membrane Optimization Using Factorial Design Approach

2021 ◽  
Vol 25 (3) ◽  
pp. 1-15
Author(s):  
M. Ait Baih ◽  
N. Saffaj ◽  
A. Bakka ◽  
R. Mamouni ◽  
N. El baraka ◽  
...  
Keyword(s):  
Particle Size ◽  
Mechanical Strength ◽  
Factorial Design ◽  
Heating Rate ◽  
Sintering Temperature ◽  
Full Factorial Design ◽  
Ceramic Support ◽  
Negative Effect ◽  
Full Factorial ◽  
Positive Effect

In the present study, the effect of Sintering temperature, Particle size and Heating rate of the ceramic support membrane Elaboration based on dry clay were evaluated using full factorial design and investigated by porosity and mechanical strength measures. The flat supports have been prepared from 5 g of the material with a two fraction 2 and 30 µm, the extrusion was performed using the uniaxial pressing in applicant a pressure of 12 tones, the supports sintered between 900° C and 1200°C with a different heating rate (1°C/min and 10°C/min). By using full factorial design 23, it was found that the sintering temperature is the main controlling factors of the physical properties of dry ceramic support membrane, and its increase had a positive effect on Mechanical strength and negative effect on porosity. The interactions between the factors were relatively less important, and they had different (antagonistic/synergetic) influence on the properties. The optimal factors to elaborate the support membrane include a particle size of 2 µm, sintering temperature of 950°C, Heating rate of 1°C predicting the porosity of 40, 8% and Mechanical strength of 12 MPa.

scholarly journals Effect of Sintering Temperature on the Fabrication of Ceramic Hollow Fibre Membrane

2016 ◽  
Vol 15 (2) ◽  
pp. 1
Author(s):  
Syafikah H Paiman ◽  
Mukhlis A A Rahman ◽  
Mohd Hafiz Dzarfan Othman ◽  
Siti Halimah Ahmad
Keyword(s):  
Mechanical Strength ◽  
Ceramic Membrane ◽  
Sintering Temperature ◽  
Pure Water ◽  
Water Flux ◽  
Hollow Fibre ◽  
Polymeric Membrane ◽  
Asymmetric Structure ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane

Recently, ceramic membrane gradually acquired attention from researchers due to the advantages of ceramic’s behavior, which allows the ceramic to overcome the limitations of using polymeric membrane. This work focused on the fabrication of ceramic hollow fibre membrane from a ceramic suspension solution containing yttria-stabilized zirconia (YSZ), polyethersulfone (PESf), N-methylpyrrolidone (NMP) and dispersants using combined phase inversion sintering technique. In this study, ceramic hollow membrane precursors were sintered at different sintering temperature ranging between 1250°C and 1400°C. The influences of sintering temperature on the microstructure, porosity and pore size distribution, mechanical strength and pure water flux of ceramic hollow fibre membrane were investigated in detail. The results show an asymmetric structure of YSZ hollow fibre membrane containing finger-like structure and sponge-like structure. The sponge-like structure can serve as a separation layer, while finger-like-structure performs as a supported layer. It is observed that sintering process caused a significant densification of sponge-like structure (microstructure). Sintering at temperature 1400°C shows the formation of non- interconnected voids. Sintering at 1300°C is sufficient enough having a mechanical strength of 227.55MPa with an apparent porosity of 45.09% and PWF of 118.39L.m¯².hr¯¹.

scholarly journals A Newly Developed Easily Sinterable Low-Alloy Steel Powder

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 406
Author(s):  
Dorota Tyrala ◽  
Janusz Konstanty ◽  
Izabela Kalemba-Rec
Keyword(s):  
Mechanical Strength ◽  
Alloy Steel ◽  
Sintering Temperature ◽  
Steel Powder ◽  
Low Alloy Steel ◽  
Closed Porosity ◽  
Cold Forming ◽  
The Matrix ◽  
Sintered Diamond ◽  
Iron Based

The work presents a possibility of fabrication of inexpensive iron-based powders intended to form the matrix in sintered diamond-impregnated tool components. In this study, a finely dispersed, pre-alloyed steel powder, containing over 95 wt.% Fe, has been designed and fabricated by means of a proprietary process developed at AGH-University of Science & Technology. It has been shown that the experimental powder can be consolidated to a closed porosity condition (>95% theoretical density) by pressure-less sintering at a temperature below 900 °C. The as-consolidated material is characterized by an excellent combination of hardness (~250 HV) and mechanical strength (>1200 MPa in 3-point bending) that meets the diamond tooling requirements. Its properties can be modified to some extent by varying the cold forming pressure and sintering temperature.

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