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Titanium alloy composite material, titanium clad material using the titanium alloy composite material, and method of producing the titanium clad material 実績あり

外国特許コード F110005837
掲載日 2011年10月25日
出願国 アメリカ合衆国
出願番号 57143406
公報番号 20080292899
公報番号 7892653
出願日 平成18年8月22日(2006.8.22)
公報発行日 平成20年11月27日(2008.11.27)
公報発行日 平成23年2月22日(2011.2.22)
国際出願番号 JP2006316408
国際公開番号 WO2007029487
国際出願日 平成18年8月22日(2006.8.22)
国際公開日 平成19年3月15日(2007.3.15)
優先権データ
  • 特願2005-259797 (2005.9.7) JP
  • 2006WO-JP316408 (2006.8.22) WO
発明の名称 (英語) Titanium alloy composite material, titanium clad material using the titanium alloy composite material, and method of producing the titanium clad material 実績あり
発明の概要(英語) (US7892653)
A titanium alloy composite material including dispersed carbon fibers coated with a layer containing an element which forms a carbide in reaction with carbon, and the carbide formed thereby, in crystal grains of the titanium alloy.
The element which forms a carbide in reaction with carbon is preferably at least one of silicon (Si), chromium (Cr), titanium (Ti), vanadium (V), tantalum (Ta), molybdenum (Mo), zirconium (Zr), boron (B), and calcium (Ca).
The carbon fibers are preferably carbon nanotubes, vapor-grown carbon fibers, or a mixture thereof.
The titanium alloy composite material has excellent mechanical strength, such as tensile strength, Young's modulus, toughness, and hardness.
特許請求の範囲(英語) [claim1]
1. A titanium alloy composite material comprising carbon nanotubes coated with a layer comprising an unreacted element and a carbide of the element, wherein the coated carbon nanotubes are dispersed in crystal grains of the titanium alloy.
[claim2]
2. The titanium alloy composite material according to claim 1, wherein the element comprises at least one element selected from the group consisting of silicon (Si), chromium (Cr), titanium (Ti), vanadium (V), tantalum (Ta), molybdenum (Mo), zirconium (Zr), boron (B), and calcium (Ca).
[claim3]
3. The titanium alloy composite material according to claim 1, wherein the titanium alloy composite material comprises 0.1% to 10% by mass of the carbon nanotubes.
[claim4]
4. The titanium alloy composite material according to claim 1, wherein the layer has a thickness of at least 0.5 nm.
[claim5]
5. The titanium alloy composite material according to claim 1, wherein the carbon nanotubes have a diameter of 2 nm to 80 nm.
[claim6]
6. The titanium alloy composite material according to claim 1, wherein the carbon nanotubes have a length of 1 mu m to 100 mu m.
[claim7]
7. A titanium clad material comprising a titanium alloy composite material comprising carbon nanotubes coated with a layer comprising an unreacted element and a carbide of the element, wherein the coated carbon nanotubes are dispersed in crystal grains of the titanium alloy, and a titanium alloy having a higher fracture toughness than the titanium alloy of the composite material, sinter bonded to one another.
[claim8]
8. The titanium clad material according to claim 7, comprising a pair of sheets made of the titanium alloy having a higher fracture toughness than the titanium alloy composite material, and a core material made of the titanium alloy composite material located between the sheets.
[claim9]
9. The titanium clad material according to claim 8, wherein the core material has a honeycomb structure.
[claim10]
10. A method of producing a titanium clad material comprising: laminating in a mold a titanium alloy composite material comprising carbon nanotubes coated with a layer comprising an unreacted element and a carbide of the element, wherein the coated carbon nanotubes are dispersed in crystal grains of the titanium alloy, and a titanium alloy having a higher fracture toughness than the titanium alloy composite material; and
sinter bonding the titanium alloy composite material and the titanium alloy to one another with pulsed electric current.
  • 発明者/出願人(英語)
  • TANIMOTO TOSHIO
  • TAKIZAWA HIDEKAZU
  • E E F COMPANY
  • NAGANO PREFECTURE
国際特許分類(IPC)
米国特許分類/主・副
  • B21B003/00
  • B21B003/02
  • C22C047/04
  • C22C047/14
  • C22C049/11

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