Titanium plate

Patent metadata

Field	Value
Publication number	US-11566305-B2
Application number	US-201817041806-A
Country	US
Kind code	B2
Filing date	Apr 3, 2018
Priority date	Apr 3, 2018
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A titanium plate includes a chemical composition of industrial pure titanium, in which an arithmetic mean roughness Ra of a surface is 0.05 μm or more and 0.40 μm or less, the surface has titanium carbide regarding which a ratio between a total sum of integrated intensities Ic derived from the titanium carbide and a total sum of integrated intensities Im of all diffraction peaks derived from the titanium carbide and titanium obtained from X-ray diffractometry ((Ic/Im)×100) is 0.8% or more and 5.0% or less, a number density of asperities on the surface is 30 to 100 pieces/mm, and an average spacing of the asperities is 20 μm or less.

First claim

What is claimed is:

1. A titanium plate, comprising a chemical composition of a titanium plate body comprising:
in mass %,
Fe: 0.00 to 0.20%;
O: 0.00 to 0.12%;
N: 0.00 to 0.08%;
C: 0.00 to 0.10%;
H: 0.000 to 0.013%;
Al: 0.00 to 0.50%;
Cu: 0.00 to 0.50%;
Si: 0.00 to 0.30%;
Cr: 0.00 to 0.50%;
Ni: 0.0 to 0.50%;
Mo: 0.00 to 0.50%;
V: 0.00 to 0.50%;
Nb: 0.00 to 0.50%;
Sn: 0.00 to 0.50%;
Co: 0.00 to 0.50%;
Zr: 0.00 to 0.50%;
Mn: 0.00 to 0.50%;
Ta: 0.00 to 0.50%;
W: 0.00 to 0.50%;
Hf: 0.00 to 0.50%;
Pd: 0.00 to 0.50%;
Ru: 0.00 to 0.50%; and
the balance: Ti and impurities,

wherein:
an arithmetic mean roughness Ra of a surface is 0.05 μm or more and 0.40 μm or less, the surface has titanium carbide regarding which a ratio between a total sum of integrated intensities Ic derived from the titanium carbide and a total sum of integrated intensities Im of all diffraction peaks derived from the titanium carbide and titanium obtained from X-ray diffractometry ((Ic/Im)×100) is 0.8% or more and 5.0% or less, a number density of asperities on the surface is 30 to 100 pieces/mm, and an average spacing of the asperities is 20 μm or less;
a plate thickness of the titanium plate is 0.27 mm or more; and
in a surface layer at a depth of 0.1 μm to 0.5 μm from the surface, a carbon content measured by using XPS is 10.0 at % or more.

2. The titanium plate according to claim 1 , wherein Cr+Ni+Mo+V+Nb: 0.00 to 1.00% in mass %, is satisfied.

3. The titanium plate according to claim 1 , wherein Sn+Co+Zr+Mn+Ta+W+Hf+Pd+Ru: 0.00 to 1.00% in mass %, is satisfied.

4. The titanium plate according to claim 1 , wherein
a ratio between a characteristic X-ray, which is Kα-ray, intensity from the surface and a Kα-ray intensity in graphite obtained by an EPMA at an acceleration voltage of 10 kV is 1.00% or more.

Assignees

• Nippon Steel Corp

Inventors

• Takebe Hidenori
• Yoshida Kentaroh
• Kuroda Atsuhiko
• Takeuchi Kouichi

Classifications

• B21B3/00

  Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences {; Rolling of aluminium, copper, zinc or other non-ferrous metals}(altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C21D, C22F) · CPC title

• B21B1/22

  for rolling {plates, strips,} bands or sheets of indefinite length (B21B1/42 takes precedence) · CPC title

• C22C14/00 Primary

  Alloys based on titanium · CPC title

• C22F1/183 Primary

  of titanium or alloys based thereon · CPC title