JP7091341B2 - 熱電焼結体および熱電素子 - Google Patents
熱電焼結体および熱電素子 Download PDFInfo
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- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- H10N10/851—Thermoelectric active materials comprising inorganic compositions
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Description
熱電素材を熱処理してインゴット(ingot)を製造した後、インゴットを粉碎して篩分けして熱電脚用粉末を獲得した。
前記球形状の粉末が板状フレーク形状の粉末および球形状の粉末を含み、前記球形状の粉末が熱電脚用粉末全体に対して約0.5体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約1.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約2.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約3.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約4.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約5.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
前記球形状の粉末が熱電脚用粉末全体に対して約6.0体積%含まれたという点を除いて実施例1と同様にP型熱電脚およびN型熱電脚を製造した後、前記P型熱電脚および前記N型熱電脚の電気伝導度を測定した。
熱電素材を熱処理してインゴット(ingot)を製造した後、インゴットを粉碎して篩分けしない状態で熱電脚用粉末を獲得した。
Claims (18)
- 熱電粉末を含み、
前記熱電粉末は、
水平方向に配置され、板状フレーク形状の複数の第1粉末;および
前記第1粉末と形状が異なる複数の第2粉末を含み、
前記第2粉末は、前記熱電粉末全体に対して5体積%未満で含まれ、
前記第2粉末の平均粒径は、650μmないし670μmである、
熱電焼結体。 - 前記第1粉末の中で水平方向に配列される第1粉末は、前記第1粉末全体に対して95体積%以上である、請求項1に記載の熱電焼結体。
- 前記第2粉末は、前記熱電粉末全体に対して3体積%以下だけ含まれる、請求項1に記載の熱電焼結体。
- 前記第2粉末は、前記熱電粉末全体に対して1体積%以下だけ含まれる、請求項1に記載の熱電焼結体。
- 前記第1粉末のサイズは、前記第2粉末のサイズと異なる、請求項1ないし請求項4のいずれか一項に記載の熱電焼結体。
- 前記第1粉末と前記第2粉末の粒径は、互いに異なる、請求項5に記載の熱電焼結体。
- 前記第2粉末は、球形状に形成される、請求項5に記載の熱電焼結体。
- 前記熱電焼結体内のボイド(void)は、全体面積に対して5%以下である、請求項1に記載の熱電焼結体。
- 前記第1粉末の粒径は、前記第2粉末の粒径より大きい、請求項6に記載の熱電焼結体。
- 前記第1粉末は、長軸および短軸を含み、
前記第1粉末の短軸に対する長軸の割合は1:1.2ないし1:6である、請求項1に記載の熱電焼結体。 - 前記第1粉末は、第1粉末全体に対して約95体積%以上の第1粉末が水平方向に配置される、請求項1に記載の熱電焼結体。
- 前記第2粉末の粒径は、300μmないし1100μmである、請求項6に記載の熱電焼結体。
- 前記水平方向は、重力方向の仮想の垂直線に対して前記板状フレーク形状の長軸が±15゜以内の角度に傾斜する方向まで含む、請求項1に記載の熱電焼結体。
- 下部基板;
前記下部基板上に配置される上部基板;
前記下部基板および前記上部基板の間に配置される複数の脚;
前記脚と前記下部基板とを連結する下部電極;および
前記脚と前記下部基板とを連結する上部電極を含み、
前記脚は熱電粉末を含み、
前記熱電粉末は、
水平方向に配置される板状フレーク形状の複数の第1粉末;および
前記第1粉末と形状が異なる複数の第2粉末を含み、
前記第2粉末は、前記熱電粉末全体に対して5体積%未満で含まれ、
前記第2粉末の平均粒径は、650μmないし670μmである、
熱電素子。 - 前記第1粉末の粒径は、前記第2粉末の粒径より大きい、請求項14に記載の熱電素子。
- 前記第1粉末は、第1粉末全体に対して約95体積%以上の第1粉末が水平方向に配置される、請求項14に記載の熱電素子。
- 前記水平方向は、重力方向の仮想の垂直線に対して前記板状フレーク形状の長軸が±15゜以内の角度に傾斜する方向まで含む、請求項14に記載の熱電素子。
- 前記第1粉末は、長軸および短軸を含み、
前記第1粉末の短軸に対する長軸の割合は、1:1.2ないし1:6である、請求項14に記載の熱電素子。
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KR20170014610 | 2017-02-01 | ||
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KR10-2017-0176190 | 2017-12-20 | ||
KR1020170176190A KR102391282B1 (ko) | 2017-02-01 | 2017-12-20 | 열전 소결체 및 열전소자 |
PCT/KR2018/001049 WO2018143598A1 (ko) | 2017-02-01 | 2018-01-24 | 열전 소결체 및 열전소자 |
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CN110627502B (zh) * | 2019-10-22 | 2020-12-22 | 中南大学 | 一种低温p型复合热电材料及制备方法 |
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