TITANIUM PLATE, PLATE FOR HEAT EXCHANGER, AND SEPARATOR FOR FUEL CELL

Title:

TITANIUM PLATE, PLATE FOR HEAT EXCHANGER, AND SEPARATOR FOR FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2016/152935

Kind Code:

A1

Abstract:

Provided are a titanium plate endowed with excellent strength and moldability, as well as a plate for a heat exchanger and a separator for a fuel cell in which said plate is used. A titanium plate containing Fe and O, and including an α-phase crystal grain structure that is an HCP structure, wherein when: the crystal orientations of the α-phase crystal grains are represented by a crystal orientation distribution function; ϕ1=0°, Φ=35°, and ϕ2=0° represent orientation 1; ϕ1=0°, Φ=35°, and ϕ2=30° represent orientation 2; ϕ1=90°, Φ=50°, and ϕ2=0° represent orientation 3; ϕ1=90°, Φ=50°, and ϕ2=30° represent orientation 4; ϕ1=50°, Φ=90°, and ϕ2=0° represent orientation 5; and the area ratio of crystal grains having orientations within 15° centered on these orientations with respect to the total area of all of the α-phase crystal grains are denoted respectively as X1, X2, X3, X4, and X5, then 0.05 ≤ (X3 + X4 + X5)/(X1 + X2) ≤ 3.0, the average value of the equivalent circular diameter of the α-phase crystal grains being 3-25 μm, and the maximum value being 140 μm or less.

Inventors:

ITO YOSHINORI (JP)
YAMASHITA KOJI (JP)
NOHARA SATOSHI (JP)

Application Number:

PCT/JP2016/059256

Publication Date:

September 29, 2016

Filing Date:

March 23, 2016

Export Citation:

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Assignee:

KK KOBE SEIKO SHO(KOBE STEEL LTD ) (JP)

International Classes:

C22C14/00; F28F21/08; H01M8/0202; C22F1/00; C22F1/18

Foreign References:

JP2010150607A	2010-07-08
JP2014012881A	2014-01-23
JP2014205904A	2014-10-30
JP2015063720A	2015-04-09
JP2016102237A	2016-06-02

Other References: