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関連する概念動画

Plasticity00:58

Plasticity

Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.
Superplasticizers01:30

Superplasticizers

Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...

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関連する実験動画

Updated: May 8, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

高張力超プラスチックのセラミック

B N Kim1, K Hiraga, K Morita

  • 1National Institute for Materials Science, Sengen, Tsukuba, Ibaraki, Japan. KIM.Byung-Nam@nims.go.jp

Nature
|September 21, 2001
PubMed
まとめ
この要約は機械生成です。

この研究は,新しいセラミック複合材料の高張力超可塑性を実証し,急速な速度で有意なプラスチック変形を可能にします. このブレークスルーは,高度なセラミック形状形成技術の可能性を開きます.

さらに関連する動画

Fused Filament Fabrication (FFF) of Metal-Ceramic Components
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Fused Filament Fabrication (FFF) of Metal-Ceramic Components

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Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
06:53

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography

Published on: January 25, 2019

関連する実験動画

Last Updated: May 8, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

Fused Filament Fabrication (FFF) of Metal-Ceramic Components
08:43

Fused Filament Fabrication (FFF) of Metal-Ceramic Components

Published on: January 11, 2019

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
06:53

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography

Published on: January 25, 2019

科学分野:

  • マテリアルサイエンス 材料科学
  • セラミック工学は,セラミック工学です.
  • 機械工学の機械工学

背景:

  • 高張力率の超可塑性は,エンジニアリング材料の形状形成に不可欠ですが,陶器では限られています.
  • 既存のセラミックの超可塑性は,低張力率 (10−5から10−4s−1) に制限され,空洞により早めに故障する傾向があります.
  • アルミニウムとマグネシウムの合金には,ほとんどの酸化物や亜酸化物とは異なり,高張率の超可塑性があります.

研究 の 目的:

  • 高張力率で新しいセラミック複合材料の超可塑性を調査する.
  • 低張張率のスーパープラスティシティと伝統的な陶器の粒状間空洞化の限界を克服するために.
  • セラミック材料における高度な形状形成技術の可能性を調査する.

主な方法:

  • テトラゴナル酸化ジルコニウム,マグネシウムアルミナートスピネル,アルファアルミナート相からなる複合陶器材料の製造.
  • 複合材料の超可塑性変形能力のテストは,最大1s−1.1sまでのストレスの速度で行われます.
  • 変形した材料の微細構造分析により,その底にある変形メカニズムを理解する.

主要な成果:

  • セラミック複合材料は,1s−1.1までのストレスの速度で超可塑性を示した.
  • 1,050%を超える大きな牽引延長は,0.4s−1.1の張張率で達成されました.
  • 超可塑性は,限られた粒子の成長と,ジルコニウム酸化物相における変位による可塑性によるものであった.

結論:

  • 開発されたセラミック複合材料は,以前の制限を克服し,高張力率の超可塑性を達成しました.
  • この発見は,セラミック材料に形状形成技術を適用するための実行可能な経路を示唆しています.
  • この研究は,先端のセラミック製造の将来にとって大きな希望を秘めています.