Phase evolution and chemical durability of Zr 1-x Nd x O 2-x/2 (0 ≤ x ≤ 1) ceramics

Ding, Yi; Dan, Hui; Lu, Xirui; Shu, Xiaoyan; Hong, Zhai; Zhang, Shuai

doi:10.1016/j.jeurceramsoc.2017.02.053

Cited by 22 publications

(6 citation statements)

References 31 publications

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“…Abstract of [21] demonstrated that, for self-sensing actuators, an observer technique is provided; a charge drive circuit is developed and the drive voltage acquired; and the strain and stress of the piezoelectric sheet are observed and computed using the drive voltage and induced charge. e estimated value of the state vector may determine the stability of the whole system, and the state feedback controller can be utilised to bring the tested system to a generally stable state, according to the abstract of [22]. Abstract of [23] recommended that the sensing function be included in the piezoelectric ceramic bending actuator and that the execution and sensing functions be realised using strip-shaped electrode segmentation in order to promote the ceramics sector on a daily basis.…”

Section: Related Workmentioning

confidence: 99%

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

Bai-mao

Sukpasjaroen

Chankoson

2022

Security and Communication Networks

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The development of digital information technology progresses as time passes. Each art category has also experienced its own development and changes. With the rapid advancement of information technology, the traditional ceramic skills left by the older generation can no longer conform to the trend of the times. The digital intervention in traditional ceramic art publishing provides more development space and development mode for the industry and traditional ceramic art publications in terms of dissemination form and dissemination effect. In the current ceramic design, contemporary ceramic art design also has a new development trend of integrating with technology and other art categories. Compared with the traditional ceramic art that pursues craftsmanship, contemporary ceramic art design is more about adding creators’ emotional concepts. In terms of material selection, craftsmanship, and aesthetics, there are big progress. The IoT network assisted digital representation of the Xiaopi kiln ceramic art design discussed in this paper is based on the technical conditions of computer-aided technology. It has the advantages of simple structure, being convenient for continuous cutting and shaping of ceramic pieces, high efficiency, numerical control without manual operation, and ease of use.

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Section: Related Workmentioning

confidence: 99%

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

Bai-mao

Sukpasjaroen

Chankoson

2022

Security and Communication Networks

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“…These phases, tetragonal and monoclinic, could be expected from the nominal composition of the mixture according to the phase equilibrium diagram of the ZrO 2 ‐CeO 2 system 50 . Indeed, the presence of these phases at room temperature after mixtures of 0.8(ZrO 2 )+0.2(CeO 2 ) were heat treated at temperatures ≥ 1350°C was reported in the literature 51,52 . Joule heating caused by the electric current during RFS was expected to increase the sample temperature further than the furnace temperature.…”

Section: Resultsmentioning

confidence: 71%

“…50 Indeed, the presence of these phases at room temperature after mixtures of 0.8(ZrO 2 )+0.2(CeO 2 ) were heat treated at temperatures ≥ 1350 • C was reported in the literature. 51,52 Joule heating caused by the electric current during RFS was expected to increase the sample temperature further than the furnace temperature. According to the black body radiation model, 8 Equation 1, the average temperature during RFS at the maximum current density (100 mA⋅mm −2 ) under air was 1690 • C. As explained before in the Methods section, this value is likely to be overestimated because the pellet was also losing heat by thermal conduction through its bottom and top surfaces that were in contact with the platinum electrodes.…”

Section: Resultsmentioning

confidence: 99%

The influence of the processing parameters on the reactive flash sintering of ZrO₂‐CeO₂

2022

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Reactive flash sintering (RFS) is a method that was recently developed to produce dense single‐phase bulk ceramic parts through solid‐state reactions in a single‐step that only takes a few minutes. The influence of the RFS parameters on the phase purity of a simple mixed oxide, (Zr0.8,Ce0.2)O2, was investigated. Parameters such as furnace temperature, furnace atmosphere, electric current density, and alternating current (AC) or direct current (DC) were examined. It was found that (Zr0.8,Ce0.2)O2 pellets with high densities, above 90% of its theoretical density, can be produced by RFS in a few minutes when RFS occurs under oxidizing atmospheres, AC fields with current densities of 100 mA·mm−2, and at a furnace temperature of 1200°C. Reducing conditions such as Ar‐H2 atmosphere and DC fields, low furnace temperatures, and low current densities resulted in phase impurities and poor reactions between the ZrO2 and the CeO2 powders. These results show that RFS is a useful method to produce mixed oxides, but it is very sensitive to the processing parameters. This is the first time that the influence of most of the RFS processing parameters has been studied systematically. Thus, the present work aims to provide guidelines on selecting the right processing parameters when exploring RFS.

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“…Recently, in the field of multi‐phase ceramics, studies have demonstrated improvement of the material properties using ZrO 2 through the positive influence on the microstructure, toughness, and hardness of the material at optimal zirconia content 30 . The ability of ZrO 2 to immobilize actinides into a cubic lattice has led to it being increasingly used in nuclear waste treatment, and ZrO 2 has many potential applications for use in nuclear waste immobilization 31–33 . ZrO 2 has been shown to have good immobilization ability for immobilizing nuclides without changing their crystal structure, 34 demonstrating that it also be a good choice of material.…”

Section: Introductionmentioning

confidence: 99%

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

Ge,

Xu,

Liao

et al. 2023

J Am Ceram Soc.

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Multiphase ceramics have a high application potential in the field of nuclear waste immobilization because of the efficient synergy between the individual phases. In this work, zirconia/garnet multiphase ceramics with high efficient and effective immobilization capacity of trivalent actinides were successfully prepared using conventional solid‐phase sintering. ZrO2 doping increases the lattice site available for nuclide substitution and advance the immobilization capacity of the ceramic substrate for nuclide. At the same time, the phase change of zirconia is used to tougher and improve the physical properties of the ceramic waste form. The feasibility of using multiphase ceramics for the efficient immobilization of trivalent actinides was assessed by studying the phase evolution, microstructure, Vickers hardness, and chemical stability of the multi‐phase ceramics. Zr1‐xNdxO2‐x/2/Ca3‐yNdyZr3‐yFey‐1Fe3O12 multiphase ceramics exhibited superior physical or chemical properties compared to most of the multiphase ceramics as well as the previously prepared single‐phase calcium garnet ceramic waste forms. The Vickers hardness of all the multiphase ceramic samples ranged between 685 and 730 HV0.5. Under the condition of using simulate Bei Shan groundwater as leaching agent, the normalized leaching rates of Nd is approximately 10−6 g·m−2·day−1, showing good chemical stability and achieving efficient and effective immobilization of trivalent actinides. The excellent chemical, as well as physical properties of Zr1‐xNdxO2‐x/2/Ca3‐yNdyZr3‐yFey‐1Fe3O12 multiphase ceramics are expected to make them one of the substrates for more efficient and effective immobilizing of trivalent actinides.

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Phase evolution and chemical durability of Zr 1-x Nd x O 2-x/2 (0 ≤ x ≤ 1) ceramics

Cited by 22 publications

References 31 publications

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

The influence of the processing parameters on the reactive flash sintering of ZrO₂‐CeO₂

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

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Phase evolution and chemical durability of Zr 1-x Nd x O 2-x/2 (0 ≤ x ≤ 1) ceramics

Cited by 22 publications

References 31 publications

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

Research on Digital Representation of Xiaopi Kiln Ceramic Art Design Based on Computer-Aided Technology and IoT Network

The influence of the processing parameters on the reactive flash sintering of ZrO2‐CeO2

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

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The influence of the processing parameters on the reactive flash sintering of ZrO₂‐CeO₂