EP1978119B1 - Titanium alloy for corrosion-resistant material - Google Patents

Titanium alloy for corrosion-resistant material Download PDF

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Publication number
EP1978119B1
EP1978119B1 EP06782010.0A EP06782010A EP1978119B1 EP 1978119 B1 EP1978119 B1 EP 1978119B1 EP 06782010 A EP06782010 A EP 06782010A EP 1978119 B1 EP1978119 B1 EP 1978119B1
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EP
European Patent Office
Prior art keywords
corrosion
titanium alloy
mass
titanium
resistant materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06782010.0A
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German (de)
English (en)
French (fr)
Other versions
EP1978119A1 (en
EP1978119A4 (en
Inventor
Satoshi Matsumoto
Keisuke Nagashima
Takashi Maeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
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Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Priority to PL06782010T priority Critical patent/PL1978119T3/pl
Publication of EP1978119A1 publication Critical patent/EP1978119A1/en
Publication of EP1978119A4 publication Critical patent/EP1978119A4/en
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Publication of EP1978119B1 publication Critical patent/EP1978119B1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon

Definitions

  • the present invention relates to a titanium alloy for corrosion-resistant materials.
  • Titanium forms thereon an oxidized film and therefore is not easily corroded as compared with general metals, so that it is widely used in a place requiring corrosion resistance.
  • titanium has more excellent corrosion resistance, and in order to deal with it, corrosion resistance is improved hitherto by adding another element to titanium.
  • Ti-Pd alloys which are also prescribed in JIS 11 type, 12 type and 13type, are known. These are alloys containing 0.12-0.25% by mass of Pd in pure titanium. Also, it is conventional to contain therein Co, Ni or the like other than Pd (cf. Patent Documents 1 and 2).
  • titanium has excellent characteristics as compared with general metals, and specifically it has not only excellent corrosion resistance but also a light weight and a high strength, and therefore various alloys are used in various applications, such as sports goods such as golf clubs and bicycles.
  • titanium alloys are expensive compared with general metals, and in these days, utilization of low cost, recycled titanium alloys, which are obtained by recycling not only sponge titanium produced from titanium ores, but also titanium alloys, which were once introduced into markets and had become out of use, are now being studied.
  • titanium alloys for corrosion-resistant materials have been very expensive in the past.
  • the published japanese application JP S62 199744 A discloses a titanium alloy that contains a Pt-group metal for improved crevice corrosion resistance.
  • conventional titanium alloys for corrosion-resistant materials have a problem in that they cannot be produced at low cost while maintaining the capability to suppress the deterioration of corrosion resistance.
  • JP-S62-199744-A discloses alloying Ti with specified amounts of a Pt group element and Nb, Zr, Hf, Ta or Bi or further adding Ni or Co and/or Mo, W or V so that the Ti alloy contains, by weight, 0.01-0.12% in total of one or more kinds of Pt group elements such as Ru, Rh, Pd, Os, Ir and Pt and 0.05-2.00% in total of one or more among Nb, Zr, Hf, Ta and Bi, or further contains 0.05-2.00% in total of Ni and/or Co and/or 0.05-1.00% in total of one or more among Mo, W and V.
  • Pt group elements such as Ru, Rh, Pd, Os, Ir and Pt
  • 0.05-2.00% in total of Ni and/or Co and/or 0.05-1.00% in total of one or more among Mo, W and V.
  • the present inventors intensively studied in order to solve the above problems, consequently found that it is possible to suppress the deterioration of corrosion resistance when a certain amount or less of at least one of Al, Cr, Zr, Nb, Si, Sn and Mn is contained in a titanium alloy, and thus achieved the present invention.
  • a titanium alloy for corrosion-resistant materials as defined in claim 1, which is characterized in that it contains 0.01-0.12% by mass in total of at least one of platinum group elements, at least one of Al, Cr, Zr, Nb, Si, Sn and Mn, with at least one of Sn or Mn being present, and the residue comprising Ti and impurities, in which the total content of Al, Cr, Zr, Nb, Si, Sn and Mn is 5% by mass or less.
  • containing Al, Cr, Zr, Nb, Si, Sn and Mn in a titanium alloy is meant that Al, Cr, Zr, Nb, Si, Sn and Mn each are present in the titanium alloy in an amount exceeding the unavoidable level.
  • the content of each of these elements can be measured by using a conventionally used analytic instrument.
  • the contents, as the unavoidable levels, of these elements present in a titanium alloy are, at maximum, Al: 0.007% by mass, Cr: 0.007% by mass, Zr: 0.001% by mass, Nb: 0.001% by mass, Si: 0.004% by mass, Sn: 0.001% by mass and Mn: 0.001% by mass, respectively.
  • Al, Cr, Zr, Nb, Si, Sn and Mn in a titanium alloy is meant in the specification of this application that these elements each are present in the titanium alloy in an amount exceeding the corresponding amount.
  • Al, Cr, Zr, Nb, Si, Sn or Mn is contained in a titanium alloy for corrosion-resistant materials, so that it is possible to reuse recycled titanium alloys coming from products in which at least one of Al, Cr, Zr, Nb, Si, Sn, with at least one of Sn and Mn being present, is used.
  • 0.01-0.12% by mass in total of at least one of platinum group elements is contained in the titanium alloy for corrosion-resistant materials, and the total content of Al, Cr, Zr, Nb, Si, Sn and Mn is 5% by mass or less. Whereby, it is possible to suppress the deterioration of corrosion resistance.
  • a titanium alloy for corrosion-resistant materials of this embodiment usually contains a platinum group element, any one or both of Co and Ni, at least one of Al, Cr, Zr, Nb, Si, Sn and Mn, in which at least one of Sn and Mn is included, and the residue comprising Ti and impurities.
  • the platinum group element is an essential component of a titanium alloy for corrosion-resistant materials, and the content thereof is 0.01-0.12% by mass.
  • the content of the platinum group element is 0.01-0.12% for the reason that when the platinum group element is less than 0.01% by mass, the corrosion resistance of the titanium alloy for corrosion-resistant materials does not reach a satisfactory level, which may cause corrosion, and on the other hand, even when the content thereof exceeds 0.12% by mass, it cannot be expected to have the corrosion resistance improved as the increase of the content thereof, and in addition, there is a possibility of increasing the cost of a titanium alloy for corrosion-resistant materials.
  • platinum group element it is possible to use Ru, Rh, Pd, Os, Ir and Pt, and preferably use Pd.
  • Co and Ni are optional components, and the content thereof is 0.05-2.00% by mass. These may be contained in the titanium alloy for corrosion-resistant materials, in place of Ti contained in the titanium alloy as a residue of the essential components, such as the platinum group element and at least one of hereinafter described Al, Cr, Zr, Nb, Si, Sn and Mn. They are contained in the amount of 0.05-2.00% by mass, thereby producing an advantage of further improving the corrosion resistance while increasing the strength of the titanium alloy for corrosion-resistant materials. When the total amount of Co and Ni is less than 0.05% by mass, it is difficult to produce the advantage of further improving the corrosion resistance while increasing the strength of the titanium alloy.
  • the at least one of Al, Cr, Zr, Nb, Si, Sn and Mn, in which at least one of Sn and Mn is included, is an essential component of a titanium alloy for corrosion-resistant materials, and the total content of Al, Cr, Zr, Nb, Si, Sn and Mn is 5% by mass or less.
  • These elements are contained in such a range for the reason that when the total content of Al, Cr, Zr, Nb, Si, Sn and Mn exceeds 5%, the corrosion resistance of the titanium alloy for corrosion-resistant materials is deteriorated, which causes corrosion. From these points of view, the total content of them is preferably 3% or less, and more preferably 2% or less.
  • impurities include unavoidable impurities such as C, O, H and Fe, and a small amount of another element may be contained in the titanium alloy for corrosion-resistant materials to such an extent as not to deteriorate the advantages of the present invention.
  • V, Mo and W are known as the elements causing less influences on the corrosion resistance, and can be contained in a titanium alloy for corrosion-resistant materials as long as the total content thereof is about 5% by mass or less.
  • the titanium alloy for corrosion-resistant materials mentioned above is preferably used for conduits, heat exchangers, electrolysis vessels and the like of such as a nickel refining plant, which are used in environments, in which they are exposed to concentrated sulfuric acid, nickel sulfate or nickel chloride at about 250°C.
  • Titanium alloys for corrosion-resistant materials are prepared by adjusting samples for evaluation on corrosion resistance of the respective Examples, Comparative Examples and Reference Examples, using pure titanium and the respective components so as to have the components of Tables 1 and 2 contained in the amounts of Tables 1 and 2.
  • pure titanium is used for Comparative Example 1.
  • the titanium alloy of each composition is produced with a size having a thickness of 20 mm, a width of 70 mm and a length of 90 mm by melting through button arc melting.
  • the thus produced pieces each are hot rolled into 3 mm thickness, and then acid-washed, thereby removing scale from the surface, and cut into a test piece having a width of 50 mm and a length of 100 mm. Then, one side of this test piece is polished with a #200 polishing sheet, while the lateral and rear sides thereof were sealed with a sealing agent, thereby allowing only the polished surface to be exposed to the surface.
  • each sample for evaluation of corrosion resistance is prepared.
  • the weight of each sample for evaluation of corrosion resistance is measured before and after the immersion in the nickel chloride solution by using an electronic balance that is capable of measuring the weight with the unit of 0.1 mg, and the difference thereof is calculated as a weight reduction ( ⁇ M).
  • the titanium alloy for corrosion-resistant materials of the present invention is capable of suppressing deterioration of corrosion resistance even though it uses recycled titanium alloys or the like, and thus being produced at low cost while maintaining the capability to suppress the deterioration of corrosion resistance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Catalysts (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
EP06782010.0A 2005-12-28 2006-07-31 Titanium alloy for corrosion-resistant material Active EP1978119B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06782010T PL1978119T3 (pl) 2005-12-28 2006-07-31 Stop tytanu na materiały odporne na korozję

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005377163A JP3916088B2 (ja) 2005-12-28 2005-12-28 耐食材用チタン合金
PCT/JP2006/315132 WO2007077645A1 (ja) 2005-12-28 2006-07-31 耐食材用チタン合金

Publications (3)

Publication Number Publication Date
EP1978119A1 EP1978119A1 (en) 2008-10-08
EP1978119A4 EP1978119A4 (en) 2014-07-02
EP1978119B1 true EP1978119B1 (en) 2016-11-23

Family

ID=36800130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06782010.0A Active EP1978119B1 (en) 2005-12-28 2006-07-31 Titanium alloy for corrosion-resistant material

Country Status (7)

Country Link
US (1) US20090004042A1 (pl)
EP (1) EP1978119B1 (pl)
JP (1) JP3916088B2 (pl)
CN (1) CN101316939A (pl)
PL (1) PL1978119T3 (pl)
RU (1) RU2405850C2 (pl)
WO (1) WO2007077645A1 (pl)

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EP2738271B1 (en) * 2011-07-26 2017-06-21 Nippon Steel & Sumitomo Metal Corporation Titanium alloy
JP5662928B2 (ja) * 2011-12-26 2015-02-04 株式会社神戸製鋼所 太陽電池モジュール用支持装置
RU2502819C1 (ru) * 2012-04-19 2013-12-27 Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") Сплав на основе титана
US9957836B2 (en) 2012-07-19 2018-05-01 Rti International Metals, Inc. Titanium alloy having good oxidation resistance and high strength at elevated temperatures
KR101699636B1 (ko) 2012-08-10 2017-01-24 신닛테츠스미킨 카부시키카이샤 티타늄 합금재
WO2014115845A1 (ja) 2013-01-25 2014-07-31 新日鐵住金株式会社 臭素イオンを含む環境での耐食性に優れたチタン合金
CN104878246A (zh) * 2015-06-02 2015-09-02 张亚南 一种用于齿科修复的合金材料及其应用
US10441607B1 (en) 2016-02-22 2019-10-15 The Board Of Regents Of The University Of Texas System Multifunctional linker technology containing an N4 group
CN107576216A (zh) * 2017-09-28 2018-01-12 江苏众众热能科技有限公司 一种板式热交换器用钛板
CN107746997A (zh) * 2017-10-23 2018-03-02 宝鸡市永盛泰钛业有限公司 一种耐腐蚀的钛合金及其制备方法
CN108467970B (zh) * 2018-03-23 2020-12-25 中国石油天然气集团公司管材研究所 一种用于高腐蚀性油气开发的含铁钛合金管及其制备方法
RU2752094C1 (ru) 2018-04-10 2021-07-22 Ниппон Стил Корпорейшн Титановый сплав и способ его получения
CN108893651A (zh) * 2018-07-25 2018-11-27 中南大学 一种高强高韧耐蚀性钛合金及其制备方法
CN110373571A (zh) * 2019-08-28 2019-10-25 浙江海洋大学 一种轻质合金的波浪键制备方法
KR102698892B1 (ko) 2019-10-30 2024-08-27 닛폰세이테츠 가부시키가이샤 티타늄 합금
CN113584345B (zh) * 2021-08-06 2022-03-08 东莞亿诚精密模具有限公司 一种高尔夫球头材料及其制备工艺和球头打击面
WO2024100802A1 (ja) 2022-11-09 2024-05-16 日本製鉄株式会社 チタン材、化学装置部品、及び化学装置
CN116904799A (zh) * 2023-06-02 2023-10-20 中国科学院金属研究所 一种适用于乏燃料后处理高温硝酸环境的钛合金及其制备方法
CN116516214B (zh) * 2023-06-02 2026-03-27 中国科学院金属研究所 一种耐高温硝酸腐蚀的钛合金及其制备方法

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Also Published As

Publication number Publication date
EP1978119A1 (en) 2008-10-08
RU2008130858A (ru) 2010-02-10
CN101316939A (zh) 2008-12-03
RU2405850C2 (ru) 2010-12-10
JP2006193829A (ja) 2006-07-27
EP1978119A4 (en) 2014-07-02
WO2007077645A1 (ja) 2007-07-12
JP3916088B2 (ja) 2007-05-16
PL1978119T3 (pl) 2017-06-30
US20090004042A1 (en) 2009-01-01

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