EFFECT OF NdB₆ ADDITION ON DENSIFICATION AND PROPERTIES OF ZrB₂

Sonber, J.K.

doi:10.13168/cs.2016.0006

Cited by 14 publications

(5 citation statements)

References 32 publications

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“…In addition, nitrides such as AlN and ZrN and rare earth oxides/borides including La 2 O 3 , LaB 6 , NdB 6 and EuB 6 have also been explored as sintering additives for the borides to enhance both sinterability and the subsequent properties [22,53,71,82,83]. Removal of the B 2 O 3 surface oxide layer by the nitrides also prevents grain growth, which in turn aids densification.…”

Section: Second Phase Selectionmentioning

confidence: 99%

“…Similarly, the addition of rare earth in the form of its borides (NdB 6 , LaB 6 , EuB 6 ) to ZrB 2 are also reported to improve the oxidation resistance compared to monolithic ZrB 2 [48,82]. LaB 6 was also identified as a beneficial additive to ZrB 2 –SiC based on its ability to act as a modifier for the ZrO 2 , which stabilised the formation of the tetragonal phase [48,387].…”

Section: Ablation and Oxidationmentioning

confidence: 99%

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Selection, processing, properties and applications of ultra-high temperature ceramic matrix composites, UHTCMCs – a review

Binner

Porter

Baker

et al. 2020

International Materials Reviews

253

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April 1 st 2019 he was also the Deputy Head of the College of Engineering & Physical Sciences. He has been active in ceramics processing research since 1981 and has published ~220 refereed papers, as well as editing or contributing to 19 books and holding 7 patents with an 8 th recently submitted. He has attracted 129 research grants to date, totalling ~£16.5M, this includes a current portfolio of about £1.9M. The focus of his research is the generation of both the necessary scientific understanding and the required engineering solutions for the design and development of materials and process routes that display technical and/or economic advantages over existing approaches. The range of products worked on ranges from nanostructured to traditional ceramics, interpenetrating composites to ultra-high temperature ceramic matrix composites. He has worked closely with industry to translate key developments, e.g. through the creation of a spin-out company to develop a ceramic sensor for measuring soil matric potential (1991), or via licensing, e.g. manufacturing routes for producing engineering ceramic foams (1995) and nanostructured ceramics (2012). He has supervised 35 Ph.D. students and 2 M.Phil. students to successful completion and 38 postdoctoral researchers. A further 7 Ph.D. students and 6 postdoctoral researchers are currently being supervised with more positions currently advertised. His research has received both national and international recognition; he has given ~65 keynotes, plenary and invited talks at international conferences, whilst the Institute of Materials, Minerals and Mining has awarded him the Holliday Prize (1995), Ivor Jenkins Medal

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Section: Second Phase Selectionmentioning

confidence: 99%

Section: Ablation and Oxidationmentioning

confidence: 99%

Selection, processing, properties and applications of ultra-high temperature ceramic matrix composites, UHTCMCs – a review

Binner

Porter

Baker

et al. 2020

International Materials Reviews

253

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“…Magnesia-calcium bricks have been widely used as lining materials in ferrous metallurgy to produce clean steel such as in refining furnaces [6] because of their excellent performance [7]. However, there are amounts of spent magnesia-calcium bricks not being reused effectively [8] because impurity elements such as Si, Fe, and Al from molten steel and slag remain in spent magnesia-calcium bricks, and these impurities can damage the usability of regenerated products [9][10][11]. These spent magnesia-calcium bricks have not been reused, as they not only occupy large amounts of land and cause environmental harm but also cause a waste of resources such as magnesia and calcium oxide in the spent bricks.…”

Section: Introductionmentioning

confidence: 99%

Effects of Aluminium Oxide Content on the Regenerated Magnesia-Calcium Bricks for Cement Rotary Kiln

Qiu,

Hao,

Hou

et al. 2023

Processes

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Regenerated magnesia-calcium brick samples with different aluminium oxide (Al2O3) contents were prepared using spent magnesia-calcium bricks and fused magnesia as the main raw materials and Al2O3 powders as the additive. The phase compositions, microstructures, room temperature, hot flexural strength, and kiln coating adherence of the regenerated samples were investigated. This indicates that the Al2O3 content increased, mainly resulting in the content of tetracalcium aluminoferrite (C4AF) and tricalcium aluminate (C3A) increasing in the regenerated samples. The bulk density, room temperature flexural strength, and kiln coating adherence all increased, whereas the hot flexural strength and corrosion resistance to cement clinker both deteriorated with an increase in the Al2O3 content. This was because, on the one hand, the low melting point phases of C4AF and C3A improved the sinterability of the regenerated samples during the burning stage, and on the other hand, they melted or existed in the liquid phase at the experimental temperature, which degraded the hot flexural strength and corrosion resistance but enhanced the kiln coating adherence as the wettability of the liquid phase. The content of Al2O3 in the regenerated magnesia-calcium brick should not be higher than 1.1 wt.%, considering its comprehensive performance for cement rotary kiln.

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“…Transition metal carbides are known for their high melting points, excellent high-temperature corrosion resistance, and weak damage sensitivity under irradiation. As a result, these carbides demonstrate applications in extreme environments of thermal protection systems, field emitters, coating of nuclear particle fuels [1][2][3]. Among these carbides, ZrC and HfC have been greatly studied for their high melting points and excellent corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Entirely Aqueous Solution-Gel Route for the Preparation of Zirconium Carbide, Hafnium Carbide and Their Ternary Carbide Powders

Chen¹

2016

Ceramics - Silikaty

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An entirely aqueous solution-gel route has been developed for the synthesis of zirconium carbide, hafnium carbide and their ternary carbide powders. Zirconium oxychloride (ZrOCl 2 ·8H 2 O), malic acid (MA) and ethylene glycol (EG) were dissolved in water to form the aqueous zirconium carbide precursor. Afterwards, this aqueous precursor was gelled and transformed into zirconium carbide at a relatively low temperature (1200°C) for achieving an intimate mixing of the intermediate products.Hafnium and the ternary carbide powders were also synthesized via the same aqueous route. All the zirconium, hafnium and ternary carbide powders exhibited a particle size of ~100 nm.

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EFFECT OF NdB₆ ADDITION ON DENSIFICATION AND PROPERTIES OF ZrB₂

Cited by 14 publications

References 32 publications

Selection, processing, properties and applications of ultra-high temperature ceramic matrix composites, UHTCMCs – a review

Selection, processing, properties and applications of ultra-high temperature ceramic matrix composites, UHTCMCs – a review

Effects of Aluminium Oxide Content on the Regenerated Magnesia-Calcium Bricks for Cement Rotary Kiln

Entirely Aqueous Solution-Gel Route for the Preparation of Zirconium Carbide, Hafnium Carbide and Their Ternary Carbide Powders

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