Comparison of microstructure, thermo-mechanical property and corrosion resistance of bauxite-corundum refractory castables reinforced by two approaches

2021 ◽  
Author(s):  
Lei Xu ◽  
Dongye Zhang ◽  
Yang Liu ◽  
Min Chen ◽  
Nan Wang
Keyword(s):  
Mechanical Property ◽  
Corrosion Resistance ◽  
Corundum Refractory ◽  
Refractory Castables

MgO Influence on the Fundamental Characteristics of Corundum Refractory Castables

2016 ◽  
Vol 722 ◽  
pp. 81-86 ◽  
Author(s):  
Lenka Nevřivová
Keyword(s):  
Compressive Strength ◽  
Corrosion Resistance ◽  
Flexural Strength ◽  
Raw Materials ◽  
Raw Material ◽  
Corundum Refractory ◽  
Refractory Castables ◽  
Dense Refractory ◽  
Materials Used

The paper focuses on the determination of how periclase content in the raw material influences the final properties of no-cement refractory castables. The motivation for this research was the continued pressure on increasing the utility properties of refractory castables, especially their corrosion resistance. The influence of MgO was observed in vibration-compacted refractory castables; the mixtures were made so that the consistency of each one was the same. There were only minimal differences in the water content of the mixtures. The mineral composition of the raw materials used in the manufacturing of the refractory castables was determined and the influence of the firing temperature on their compressive strength, flexural strength, apparent porosity, mineralogy and pore structure was described. The corrosion resistance was determined by means of the crucible test according to CSN P CEN/TS 15418 (726022) Method of test for dense refractory products – Guidelines for testing the corrosion resistance of refractories caused by liquids.

The Impact of In Situ-Formed Spinel on the Porosity of No-Cement Refractory Castables

2017 ◽  
Vol 908 ◽  
pp. 139-144
Author(s):  
Lenka Nevřivová
Keyword(s):  
Corrosion Resistance ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Corrosion Test ◽  
Corundum Refractory ◽  
Refractory Castables ◽  
The Impact ◽  
Furnace Slag

The paper focuses on the determination of how in-situ formed magnesia-alumina spinel (MA spinel) content in corundum refractory castables influences the final properties and pore size distribution of no-cement refractory castables. The motivation for this research was the continued pressure on increasing the utility properties of refractory castables, namely their corrosion resistance to blast-furnace slag. The influence of MA spinel content was observed in vibration-compacted refractory castables (three mixtures). The corrosion test was performed to determine the dependence of the size of the slag-penetrated area on MA spinel content in the specimen. The pore structure of a slag-penetrated NCC and an unaffected castable was described.

Preparation of Electrodeposited Ni-CNTs Nanocomposite Coatings with Highly Wear and Corrosion Resistance Properties

2012 ◽  
Vol 548 ◽  
pp. 101-104 ◽  
Author(s):  
W. Shao ◽  
D. Nabb ◽  
N. Renevier ◽  
I. Sherrington ◽  
J.K. Luo
Keyword(s):  
Mechanical Property ◽  
Carbon Nanotubes ◽  
Corrosion Resistance ◽  
Surface Morphology ◽  
Corrosion Property ◽  
Nanocomposite Coatings ◽  
Sem Images ◽  
Wear And Corrosion ◽  
Watts Bath ◽  
Wear And Corrosion Resistance

Ni-carbon nanotubes nanocomposite coatings were obtained from a Watts bath containing uniformly dispersed carbon nanotubes (CNTs). The surface morphology was investigated by the SEM images of coatings. The mechanical property and corrosion resistance of the nanocomposite coatings were investigated. This study revealed these CNTs reinforced Ni nanocoatings have improved mechanical and corrosion property.

Preparation and properties of duplex NI-P-TIO2/NI nanocomposite coatings

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940019 ◽  
Author(s):  
Weihui Zhang ◽  
Di Cao ◽  
Yanxin Qiao ◽  
Yuxin Wang ◽  
Xiang Li ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Porous Structure ◽  
Outer Layer ◽  
Nanocomposite Coating ◽  
Nanocomposite Coatings ◽  
Coating Properties ◽  
Duplex Coating ◽  
Plating Solution

Duplex Ni-P-TiO2/Ni coatings were deposited on the brass substrate by using two baths. Ni-P-TiO2 nanocomposite coatings were electroplated as the outer layer on the Ni-plated brass substrate by adding transparent TiO2 sol (0–50 mL/L) into the Ni-P plating solution. The microstructure, mechanical property and corrosion resistance of the duplex Ni-P-TiO2/Ni nanocomposite coatings were systemically investigated. The results show that the interface of duplex coating was uniform and the adhesion between two layers was extremely good. The microhardness of duplex Ni-P-12.5 mL/L TiO2 /Ni coating was [Formula: see text]616 HV[Formula: see text] compared to [Formula: see text]539 HV[Formula: see text] of Ni-P /Ni coating and [Formula: see text]307 HV[Formula: see text] of single Ni coating. Meanwhile, the wear resistance and the corrosion resistance of the duplex nanocomposite coating have also been improved remarkably compared with single Ni coating. However, adding excessive TiO2 sol (more than 12.5 mL/L) caused the agglomeration of TiO2 nanoparticles and led to a porous structure in the outer layer, resulting in the deterioration of coating properties.

scholarly journals The mechanical property and corrosion resistance of Mg-Zn-Nd alloy fine wires in vitro and in vivo

2021 ◽  
Vol 6 (1) ◽  
pp. 55-63
Author(s):  
Ming Gao ◽  
Di Na ◽  
Xiangqiao Ni ◽  
Lihui Song ◽  
Iniobong P. Etim ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Corrosion Resistance

Optimization of mechanical property, antibacterial property and corrosion resistance of Ti-Cu alloy for dental implant

2019 ◽  
Vol 35 (10) ◽  
pp. 2336-2344 ◽  
Author(s):  
Jiewen Wang ◽  
Shuyuan Zhang ◽  
Ziqing Sun ◽  
Hai Wang ◽  
Ling Ren ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Corrosion Resistance ◽  
Dental Implant ◽  
Antibacterial Property ◽  
Cu Alloy

Research on the Corrosion Resistance of Manganese Slag Cement Stabilized Macadam Base

2011 ◽  
Vol 280 ◽  
pp. 13-18 ◽  
Author(s):  
Feng Qin ◽  
Zhuang Bin He ◽  
Qiong Nian Huang
Keyword(s):  
Mechanical Property ◽  
Compressive Strength ◽  
Corrosion Resistance ◽  
Acid Rain ◽  
Unconfined Compressive Strength ◽  
Slag Cement ◽  
Immersion Experiment ◽  
Manganese Slag

In this study, the unconfined compressive strength and anti-corrosion capacity and erosion resistibility were evaluated. Different admixture amounts of manganese slag cement were used as constituents of stabilized macadam base specimens. On the prepared specimens mechanical property test、continuous immersion experiment and anti erosion experiment were carried out for the research on the corrosion resistance of manganese slag cement stabilized macadam base. It was observed that corrosion resistance and scour resistance performances were significantly improved with the incorporation of manganese. The performance of corrosion resistance reduce after first enhance when slag manganese slag cement stabilized macadam base are marinated with acid rain. During continuous acid rain marinate, the anti-corrosion capacity is improved on the first 21day, but it is observed declined rapidly after 21day acid rain marinate and finally manganese slag cement stabilized macadam base is lose its workability because of full corrosion.

Study on Corrosion Resistance and Mechanical Property of Welding HAZ Treated by Laser Surface Remelting

2013 ◽  
Vol 734-737 ◽  
pp. 2346-2350 ◽  
Author(s):  
Yan Li Li ◽  
Jia Rui Qi ◽  
Dan Feng Zhang ◽  
Ji Liu ◽  
Chao Li
Keyword(s):  
Mechanical Property ◽  
Corrosion Resistance ◽  
Corrosion Current ◽  
Processing Parameters ◽  
Electrochemical Analysis ◽  
Constructional Steel ◽  
Orthogonal Test ◽  
Laser Surface ◽  
Laser Remelting ◽  
Laser Surface Remelting

Welding is a main joint way of the alloy constructional steel. However, the welding HAZ is very sensitive to corrosion. In order to increase the corrosion resistance of the welding HAZ without reducing mechanical property of the parts simultaneously, the laser surface remelting was used to treat the welding HAZ in this study. According to the results of the orthogonal test, the optimized processing parameters were obtained. Based on the electrochemical analysis, the corrosion current of 30CrMnSi welding HAZ can be decreased by laser remelting technology. The corrosion resistance of the HAZ can be improved effectively. At the same time, the mechanical property of the treated welding HAZ was better compared with the untreated.

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