Oxidation Resistance, Compressive Strength and Thermal Shock Resistance of SiC Ceramics Prepared by Two Processing Routes

Silicon ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 761-772
Author(s):  
S. B. Hanna ◽  
M. Awaad ◽  
N. A. Ajiba
Keyword(s):  
Compressive Strength ◽  
Thermal Shock ◽  
Oxidation Resistance ◽  
Thermal Shock Resistance ◽  
Sic Ceramics ◽  
Shock Resistance

Viability of Some Kano-Nigerian Clays for Refractory Applications

2013 ◽  
Vol 315 ◽  
pp. 477-481 ◽  
Author(s):  
I.A. Rafukka ◽  
B. Onyekpe ◽  
Y. Tijjani
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Bulk Density ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Linear Shrinkage ◽  
Chemical Compositions ◽  
Shock Resistance ◽  
Materials Used ◽  
Refractory Bricks

The physical properties of some materials used by local foundries were investigated with a view to assessing their suitability for use as low heat duty refractory bricks. The samples were collected from Malamai village, Gezawa Local Government, Kano state; they are Gezawa clay and Burji (Clay). The samples were crushed, ground, sieved and the chemical compositions were determined. The clay samples were treated separately as well as blended with Gezawa clay in different proportions and molded in to bricks. The bricks were dried and fired to 1100. Test for refractoriness, thermal shock resistance, linear shrinkage; bulk density, porosity and compressive strength were carried out on each of the specimen. Burji blended with 50% to 90% Gezawa clay gave improved thermal shock resistance with a refractoriness of 1300 and hence could be used for non ferrous melting cupolas.

Thermal shock resistance of Si3N4 and Si3N4–SiC ceramics with rare-earth oxide sintering additives

2014 ◽  
Vol 34 (14) ◽  
pp. 3301-3308 ◽  
Author(s):  
Monika Kašiarová ◽  
Peter Tatarko ◽  
Peter Burik ◽  
Ján Dusza ◽  
Pavol Šajgalík
Keyword(s):  
Rare Earth ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Rare Earth Oxide ◽  
Sintering Additives ◽  
Sic Ceramics ◽  
Shock Resistance

Effects of pore diameters on phase, oxidation resistance, and thermal shock resistance of the porous Si2 N2 O ceramics

2017 ◽  
Vol 100 (5) ◽  
pp. 2190-2198 ◽  
Author(s):  
Shaojie Lin ◽  
Feng Ye ◽  
Junjie Ding ◽  
Chunping Yang ◽  
Jie Ma ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Oxidation Resistance ◽  
Thermal Shock Resistance ◽  
Phase Oxidation ◽  
Shock Resistance

Sic Based Ceramic Foams Reinforced by In Situ Mullite Whisker

2009 ◽  
Vol 79-82 ◽  
pp. 1983-1986 ◽  
Author(s):  
Xiao Li Ji ◽  
Fei Xu ◽  
Hai Ya Chen
Keyword(s):  
Compressive Strength ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Ceramic Foams ◽  
Sic Ceramic ◽  
Influence Of Temperature On ◽  
Shock Resistance ◽  
Mullite Whiskers ◽  
Maximum Compressive Strength

Prepared silicon carbide(SiC) ceramic foams combined with mullite whiskers which synthesized by in-situ reaction. Studied on the influence of temperature on the synthesis of mullite whisker, and the influence of mullite content on the compressive strength, thermal shock resistance of SiC ceramic foams. The results indicate that the performance of mullite whiskers synthesized at 1400°Cwere best, when mullite content was 25%, SiC ceramic foams could reach the maximum compressive strength for 1.75MP, the most thermal shock resistance for14 times.

Preparation and Oxidation Behavior of Metallic Nickel Containing MgAlON Composite

2018 ◽  
Vol 37 (6) ◽  
pp. 563-569
Author(s):  
Yang Jinlin ◽  
Xiao Hanxin
Keyword(s):  
Thermal Shock ◽  
Oxidation Resistance ◽  
Thermal Shock Resistance ◽  
Oxidation Reaction ◽  
Oxidation Behavior ◽  
Raw Materials ◽  
Metallic Nickel ◽  
Aluminum Oxynitride ◽  
Shock Resistance ◽  
Lower Temperature

AbstractTo survey the probability of the re-utilization of nickel containing slag corroded magnesia and alumina-graphite refractories, different amounts of nickel oxide (NiO) were used as one of raw materials to synthesize nickel containing magnesium aluminum oxynitride (MgAlON) composites, and the sintering and oxidation behavior have been explored in this work. The results reveal that with the increasing NiO additive, submicron metallic Ni grains are segregated from the (Ni,Mg)AlON spinel, and these grains are beneficial to improve thermal shock resistance of MgAlON. Though the oxidation reaction of (Ni,Mg)AlON starts at lower temperature than MgAlON, the metallic Ni grains in the plate can improve the oxidation resistance. Hence, the metallic nickel containing (Ni,Mg)AlON composite has not only superior thermal shock resistance but also excellent oxidation resistance, and it is of great potential to utilize in plant. So, the fabrication of metallic nickel containing (Ni,Mg)AlON composite should be a feasible way to reuse the nickel slag corroded magnesia and alumina graphite refractories.

scholarly journals Effect of Hollow Corundum Microspheres Additive on Physical and Mechanical Properties and Thermal Shock Resistance Behavior of Bauxite Based Refractory Castable

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4736
Author(s):  
Rimvydas Stonys ◽  
Jurgita Malaiškienė ◽  
Jelena Škamat ◽  
Valentin Antonovič
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Thermal Shock ◽  
Modulus Of Elasticity ◽  
Thermal Shock Resistance ◽  
Visual Analysis ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Shock Resistance

This paper analyses the effect of hollow corundum microspheres (HCM) on both physical-mechanical properties (density, ultrasonic pulse velocity, modulus of elasticity, and compressive strength) and thermal shock resistance behavior of refractory medium cement castable with bauxite aggregate. Moreover, the scanning electron microscopy (SEM) results of HCM and refractory castable samples are presented in the paper. It was found that the replacement of bauxite of 0–0.1 mm fraction by HCM (2.5%, 5%, and 10% by weight of dry mix) had no significant effect on the density and compressive strength of castable, while the modulus of elasticity decreased by 15%. Ultrasonic pulse velocity (Vup) values and the visual analysis of the samples after thermal cycling showed that a small amount of HCM in composition of refractory castable could reduce the formation and propagation of cracks and thus increase its thermal shock resistance.

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