Effect of Slurry Characters of Titanium Nitride on Forming and Sintering Behaviors.

Yokoyama, Hisanori; Kato, Nobuhisa; Nomura, Takanori; Hotta, Tadashi; Nakahira, Kenji; Naito, Makio; Sakamoto, Wataru; Hirano, Shin‐ichi

doi:10.2109/jcersj.107.968

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…In this series of metals, the least electronegative metal is titanium (1.32), which was found to have significantly higher mass fractions in laminated samples. Increased concentrations of titanium in laminated samples may be associated with the use of white opaque paints applied to the plastic foil for lamination [68,69]. Sticky particles are formed in the cellulose pulp of the laminated samples, to which titanium can adhere and which also contribute to the increase in the mass concentration values.…”

Section: Resultsmentioning

confidence: 99%

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Klemenčić,

Bolanča Mirković,

Bolf

et al. 2024

Polymers

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In the process of paper recycling, certain amounts of metals can be found in the cellulose suspension, the source of which is mainly printing inks. The paper industry often uses different technologies to reduce heavy metal emissions. The recycling of laminated packaging contributes to the formation of sticky particles, which affects the concentration of heavy metals. This study aimed to determine the mass fraction of metals in the different phases of the deinking process to optimize the cellulose pulp’s quality and design healthy correct packaging products. In this research, the deinking flotation of laminated and non-laminated samples was carried out by the Ingede 11 method. As a result of the study, the mass fractions of metals in cellulose pulp were divided into four groups according to the mass fraction’s increasing value and the metals’ increasing electronegativity. The quantities of metals were analyzed using Inductively Coupled Mass Spectrometry (ICP-MS). The separation of metals from cellulose pulp is influenced by the presence of adhesives and the electronegativity of the metal. The results of the study show that the recycling process removes certain heavy metals very well, which indicates the good recycling potential of pharmaceutical cardboard samples.

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Section: Resultsmentioning

confidence: 99%

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Klemenčić,

Bolanča Mirković,

Bolf

et al. 2024

Polymers

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“…In previous studies, however, there are instances when the results of such measurements do not correlate with the particle dispersibility in the slurry or the packing fraction of the green body. Particularly for the ceramic wet-shaping process, the slurry tends to have a high particle concentration and multicomponent additives such as binders; consequently, proper evaluation of its behavior is not easy [4][5][6][7]. For example, Singh et al [4] investigated the colloidal stability of alumina suspensions and determined the optimum suspension pH.…”

Section: Introductionmentioning

confidence: 99%

“…However, the latter two properties were not completely correlated to each other, and there was no explanation for the mismatch. Yokoyama et al [6] used a dense aqueous titanium nitride slurry containing 46.4 vol% of particles and studied the effect of dispersant condition on the slurry and green body characteristics. Those authors used rheological evaluations to confirm the slurry behavior and found that the green body density changed according to the dispersant type.…”

Section: Introductionmentioning

confidence: 99%

Determination of optimum slurry evaluation method for the prediction of BaTiO₃ green sheet density

Iwata

Mori

2020

Journal of Asian Ceramic Societies

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In this study, the particle dispersion state in a dense BaTiO 3 slurry containing a dispersant and binder was assessed by various slurry evaluations such as particle size distribution measurement by laser diffraction, viscosity measurement, dynamic viscoelasticity measurement, and hydrostatic pressure measurement, which is a novel slurry evaluation technique developed by our group. Then, the relationship between the slurry evaluation results and the packing fraction of green sheets fabricated from these slurries was discussed. We found that the particle size distribution and the relative viscosity and yield stress by dynamic viscoelasticity measurement could not properly estimate the packing fraction of green sheets. In contrast, the hydrostatic pressure measurement was able to distinguish the particle dispersion state, and the results show an acceptable correlation with the packing fraction. The reason is that our developed method evaluates not only the initial particle dispersion state, but also its change as the particle concentration increases. ARTICLE HISTORY

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“…However, by comparison with these slurry evaluation results, some unexpected results suggested that the slurry conditions whose particles appeared to be most dispersed differed depending on the evaluation method 16,17 . In addition, the densest green body was not necessarily obtained by the slurry with the most dispersed particles identified via the slurry evaluation 18–23 . For example, Kim et al 16 investigated aqueous CMP slurry containing silica particles; an apparent viscosity measurement and sedimentation test were conducted, and subsequently, the optimal slurry condition was specified; however, the viscosity of the slurry and the result of sedimentation did not completely correspond, and the reason was not elaborated.…”

Section: Introductionmentioning

confidence: 99%

Effect of medium condition change on green body density during casting and drying

Iwata

Yamada

Mori

2020

Int J Applied Ceramic Tech

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The present study examined whether the optimum slurry conditions in which the green body with the highest packing fraction was fabricated were the same regardless of whether tape or slip casting methods were used. Additionally, we investigated the optimum slurry evaluation method to predict the packing fraction of each green body. Specifically, aqueous dense alumina slurries, whose particle dispersion state was changed by varying pH and the amount of dispersant additive, were prepared. After changing the pH, the optimum slurry conditions were achieved regardless of the casting method. The most suitable amount of additive dispersant differed due to the changing solution conditions during the casting and drying process; the medium of the slurry permeated into the plaster during slip casting and dried on the substrate during tape casting. Thus, in slip casting, non‐adsorbed polymers could also be permeated. Hence, it is crucial for slurry evaluation to predict the packing fraction of the slip cast body. A sedimentation test, which involved particle condensation as well as casting, was valid for the green sheet. Conversely, it was experimentally shown that the constant pressure filtration test, which involved the permeation of the medium in addition to particle condensation, was suitable for slip casting.

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Effect of Slurry Characters of Titanium Nitride on Forming and Sintering Behaviors.

Cited by 6 publications

References 3 publications

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Determination of optimum slurry evaluation method for the prediction of BaTiO₃ green sheet density

Effect of medium condition change on green body density during casting and drying

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Effect of Slurry Characters of Titanium Nitride on Forming and Sintering Behaviors.

Cited by 6 publications

References 3 publications

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Determination of the Mass Fractions of the Heavy Metals in the Recycled Cellulose Pulp

Determination of optimum slurry evaluation method for the prediction of BaTiO3 green sheet density

Effect of medium condition change on green body density during casting and drying

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Product

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Determination of optimum slurry evaluation method for the prediction of BaTiO₃ green sheet density