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Titanium alloy for corrosion-resistant material

A titanium alloy and corrosion-resistant technology, applied in the field of titanium alloys for corrosion-resistant materials, can solve the problems of high price, difficult to corrode, expensive, etc., and achieve the effects of cheap manufacturing and inhibiting the reduction of corrosion resistance.

Inactive Publication Date: 2008-12-03
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when such corrosion resistance as mentioned above is required, if other elements are mixed, even in a small amount, corrosion may occur starting from the element. Therefore, titanium alloys for corrosion-resistant materials have not been Use recycled titanium alloy
In addition, platinum elements such as Pd are generally more expensive than titanium, so titanium alloys used for corrosion-resistant materials were very expensive in the past.
[0006] That is, the conventional titanium alloys for corrosion-resistant materials have the problem that it is difficult to suppress the decrease in corrosion resistance and manufacture them at low cost.

Method used

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  • Titanium alloy for corrosion-resistant material
  • Titanium alloy for corrosion-resistant material
  • Titanium alloy for corrosion-resistant material

Examples

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Embodiment 1～29

[0026] (Examples 1-29, Comparative Examples 1-11)

[0027] Using pure titanium and each component, adjust the samples for corrosion resistance evaluation of each example and comparative example, so that the titanium alloy contains the components in Table 1 and 2 according to the amount in Table 1 and 2, and prepare a titanium alloy for corrosion-resistant materials. . Also, in Comparative Example 1, pure titanium was used.

[0028] At this time, titanium alloys of the respective compositions were first melted into a size of 20 mm thick×70 mm wide×90 mm long by button arc melting.

[0029] Next, after rolling this smelt to a thickness of 3 mm by hot rolling, the scale on the surface was removed by pickling, and a test piece 50 mm wide by 100 mm long was cut out therefrom. Then, one side of the test piece was ground with #200 sandpaper to expose only the ground side, and the side and back side were sealed with a sealant, and used as a sample for corrosion resistance evaluation...

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Abstract

A titanium alloy for corrosion-resistant material that while inhibiting a drop of corrosion resistance, can be produced at low cost. There is provided a titanium alloy for corrosion-resistant material characterized in that the titanium alloy is composed of, by mass%, 0.01 to 0.12% of the sum of at least one platinum group element, further at least one of Al, Cr, Zr, Nb, Si, Sn and Mn and the balance Ti and impurities, and that the total content of Al, Cr, Zr, Nb, Si, Sn and Mn therein is 5% or less by mass%.

Description

technical field [0001] The present invention relates to titanium alloys for corrosion-resistant materials. Background technique [0002] Since titanium has an oxide film formed on the surface, it is more difficult to corrode than ordinary metals, and it is widely used in places where corrosion resistance is required. However, in such applications, it is further desired to have excellent corrosion resistance, and it has been conventionally performed to add other elements to titanium to improve corrosion resistance. [0003] For example, as titanium having improved corrosion resistance, Ti—Pd alloys are also known as specified in JIS 11, 12, and 13. These are alloys containing 0.12 to 0.25% by mass of Pd in ​​pure titanium. Furthermore, Co, Ni, etc. are contained in addition to Pd (refer patent document 1 and 2). [0004] However, titanium not only has excellent corrosion resistance, but also has superior characteristics compared with general metals such as light weight and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00
CPCC22F1/183C22C14/00
Inventor 松本启长岛启介前田尚志
Owner NIPPON STEEL CORP