Hot Isostatic Pressing and Sintering Behavior of Yttrium Oxide Dispersed Tungsten

Ishiwata, Yutaka; Itoh, Yoshiyasu; Kashiwaya, Hideo

doi:10.1007/978-94-011-2900-8_63

Cited by 4 publications

(4 citation statements)

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“…Titanium-45 has a half-life of 3.09 hours and a positron branching ratio of 85% with an Ep+-of 1.04 MeV. The work of Ishiwata et al investigated 45Ti as a potential metal for labeling harmaceuticals for PET imaging (5). In the current study, the biodistribution of Ti-transfenin was examined to investigate the mode of transport of titanium compounds to tumors.…”

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confidence: 94%

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Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin

Vāvere¹,

Jones²,

McCarthy³

et al. 2001

Labelled Comp Radiopharmac

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Several titanium complexes are currently being investigated for their ability to exhibit antitumor activity both in vitro and in vivo (1). Sun et al. recently showed the first specific Ti(IV)‐protein complex through binding experiments with transferrin (2). This suggests that transferrin could be the mode of transport for titanium anticancer drugs since tumor cells show high levels of transferrin receptors on the cell surface (3). Transferrin has a molecular weight of 80 kDa and is only 30% saturated with iron, leaving available binding sites for other metal ions (4). Titanium‐45 has a half‐life of 3.09 hours and a positron branching ratio of 85% with an Eβ+max of 1.04 MeV. The work of Ishiwata et al. investigated 45Ti as a potential metal for labeling pharmaceuticals for PET imaging (5). In the current study, the biodistribution of 45Ti‐transferrin was examined to investigate the mode of transport of titanium compounds to tumors.

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confidence: 94%

“…Titanium-45 was produced using methods similar to that of Ishiwata et al (5), using targetry system previously described for the production of @ku (6). Briefly, a n a t S~ foil target (thickness = 0.250 mm) was bombarded with approximately 14.7 MeV protons on a Cyclotron Corporation CS-15 cyclotron.…”

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confidence: 99%

Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin

Vāvere¹,

Jones²,

McCarthy³

et al. 2001

Labelled Comp Radiopharmac

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“…Yttrium is another rare earth element used in the production of tungsten heavy alloys to improve its properties. Early investigations of yttrium-oxide-dispersed tungsten material showed good corrosion resistance over the grain boundaries against molten metals [ 78 , 79 ]. The grains got refined with the addition of Y 2 O 3 in comparison with pure tungsten.…”

Section: Effect Of Oxide Dispersions On Whamentioning

confidence: 99%

Effect of Rare Earth Metals (Y, La) and Refractory Metals (Mo, Ta, Re) to Improve the Mechanical Properties of W–Ni–Fe Alloy—A Review

et al. 2021

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Tungsten heavy alloys are two-phase metal matrix composites that include W–Ni–Fe and W–Ni–Cu. The significant feature of these alloys is their ability to acquire both strength and ductility. In order to improve the mechanical properties of the basic alloy and to limit or avoid the need for post-processing techniques, other elements are doped with the alloy and performance studies are carried out. This work focuses on the developments through the years in improving the performance of the classical tungsten heavy alloy of W–Ni–Fe through doping of other elements. The influence of the percentage addition of rare earth elements of yttrium, lanthanum, and their oxides and refractory metals such as rhenium, tantalum, and molybdenum on the mechanical properties of the heavy alloy is critically analyzed. Based on the microstructural and property evaluation, the effects of adding the elements at various proportions are discussed. The addition of molybdenum and rhenium to the heavy alloy gives good strength and ductility. The oxides of yttrium, when added in a small quantity, help to reduce the tungsten’s grain size and obtain good tensile and compressive strengths at high temperatures.

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“…An alternative way under investigation to the encapsulation is Capsule-free HIP, already applied to W, SiC and other nuclear fusion relevant materials [12]. In this method, not powders but relatively dense materials, prepared beforehand, are directly treated by HIP.…”

Section: Present Effort For Enhancing the Alloy Production Technologymentioning

confidence: 99%

Technical Advancement in Fabricating Dispersion Strengthened Copper Alloys by Mechanical Alloying and Hot Isostatic Pressing for Application to Divertors of Fusion Reactors

Muroga

Noto

Hishinuma

et al. 2018

MSF

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National Institute for Fusion Science (NIFS) launched in 2014 a research program for developing Dispersion Strengthened (DS) Cu alloys for application to the heat sink materials of divertors of fusion reactors, using newly installed ball-milling, encapsulation, and Hot Isostatic Pressing (HIP) facilities. A unique feature of these facilities is that the entire process can be performed without exposing the materials to air, enabling precise impurity control. Cu-Al, Cu-Zr and Cu-Y alloys have been produced in this program. Various technological advancement has been made for the fabrication, such as suppression of powder adhesion to the wall of containers during the ball milling, and encapsulation technology including development of small volume tubular capsules.

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Hot Isostatic Pressing and Sintering Behavior of Yttrium Oxide Dispersed Tungsten

Cited by 4 publications

References 1 publication

Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin

Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin

Effect of Rare Earth Metals (Y, La) and Refractory Metals (Mo, Ta, Re) to Improve the Mechanical Properties of W–Ni–Fe Alloy—A Review

Technical Advancement in Fabricating Dispersion Strengthened Copper Alloys by Mechanical Alloying and Hot Isostatic Pressing for Application to Divertors of Fusion Reactors

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Hot Isostatic Pressing and Sintering Behavior of Yttrium Oxide Dispersed Tungsten

Cited by 4 publications

References 1 publication

Preparation, biodistribution, and micropet imaging of 45Ti‐transferrin

Preparation, biodistribution, and micropet imaging of 45Ti‐transferrin

Effect of Rare Earth Metals (Y, La) and Refractory Metals (Mo, Ta, Re) to Improve the Mechanical Properties of W–Ni–Fe Alloy—A Review

Technical Advancement in Fabricating Dispersion Strengthened Copper Alloys by Mechanical Alloying and Hot Isostatic Pressing for Application to Divertors of Fusion Reactors

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Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin

Preparation, biodistribution, and micropet imaging of ⁴⁵Ti‐transferrin