EA202190631A1 - Аустенитный нержавеющий сплав с превосходной коррозионной стойкостью - Google Patents

Аустенитный нержавеющий сплав с превосходной коррозионной стойкостью

Info

Publication number
EA202190631A1
EA202190631A1 EA202190631A EA202190631A EA202190631A1 EA 202190631 A1 EA202190631 A1 EA 202190631A1 EA 202190631 A EA202190631 A EA 202190631A EA 202190631 A EA202190631 A EA 202190631A EA 202190631 A1 EA202190631 A1 EA 202190631A1
Authority
EA
Eurasian Patent Office
Prior art keywords
corrosion resistance
austenitic stainless
sulfuric acid
excellent corrosion
alloys
Prior art date
Application number
EA202190631A
Other languages
English (en)
Inventor
Грант Хардинг
Original Assignee
Кеметикс Инк.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Кеметикс Инк. filed Critical Кеметикс Инк.
Publication of EA202190631A1 publication Critical patent/EA202190631A1/ru

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/06—Alloys based on chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22F1/11—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of chromium or alloys based thereon
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Powder Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Были раскрыты аустенитные нержавеющие сплавы, которые проявляют неожиданно превосходную коррозионную стойкость, особенно к воздействию растворов серной кислоты, по сравнению с таковой, которую проявляют традиционные сплавы с родственными составами. Эти сплавы предпочтительно являются коррозионно-стойкими в относительно широком диапазоне концентраций и температур серной кислоты и, таким образом, являются особенно подходящими для использования в промышленном производстве серной кислоты.
EA202190631A 2018-08-29 2019-08-23 Аустенитный нержавеющий сплав с превосходной коррозионной стойкостью EA202190631A1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862724572P 2018-08-29 2018-08-29
PCT/US2019/047849 WO2020046735A1 (en) 2018-08-29 2019-08-23 Austenitic stainless alloy with superior corrosion resistance

Publications (1)

Publication Number Publication Date
EA202190631A1 true EA202190631A1 (ru) 2021-06-09

Family

ID=67902594

Family Applications (1)

Application Number Title Priority Date Filing Date
EA202190631A EA202190631A1 (ru) 2018-08-29 2019-08-23 Аустенитный нержавеющий сплав с превосходной коррозионной стойкостью

Country Status (9)

Country Link
US (1) US20210214825A1 (ru)
EP (1) EP3844311A1 (ru)
CN (1) CN112771181A (ru)
BR (1) BR112021003856B1 (ru)
CA (1) CA3108890A1 (ru)
EA (1) EA202190631A1 (ru)
JO (1) JOP20210024A1 (ru)
MA (1) MA53483A (ru)
WO (1) WO2020046735A1 (ru)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947266A (en) * 1974-05-17 1976-03-30 Carondelet Foundry Company Corrosion-resistant alloys
US4278465A (en) * 1979-11-02 1981-07-14 Carondelet Foundry Company Corrosion-resistant alloys
US5028396A (en) 1982-06-11 1991-07-02 Chemetics International Company, Ltd. Apparatus formed of high silicon chromium/nickel in steel in the manufacture of sulpheric acid
CA1181569A (en) 1982-06-11 1985-01-29 Frank Smith Apparatus and process
US4576813A (en) 1983-07-05 1986-03-18 Monsanto Company Heat recovery from concentrated sulfuric acid
DE3508532A1 (de) * 1985-03-09 1986-09-18 Bayer Ag, 5090 Leverkusen Verwendung einer chromhaltigen legierung
JP2634299B2 (ja) * 1990-05-23 1997-07-23 三菱重工業株式会社 高温、高濃度硫酸用Ｐｄ添加ステンレス鋼
DE4342188C2 (de) * 1993-12-10 1998-06-04 Bayer Ag Austenitische Legierungen und deren Verwendung
DE19748205A1 (de) * 1997-10-31 1999-05-06 Abb Research Ltd Verfahren zur Herstellung eines Werkstückes aus einer Chromlegierung und dessen Verwendung
US6036917A (en) 1998-12-17 2000-03-14 Allegheny Ludlum Corporation Corrosion resistant austenitic stainless steel
CN101845600A (zh) * 2009-03-25 2010-09-29 大连特耐泵业有限公司 一种耐高温耐酸腐蚀的不锈钢及其制备方法
CN106756559B (zh) * 2016-12-27 2018-09-14 振石集团东方特钢有限公司 一种耐浓硫酸腐蚀用高硅奥氏体不锈钢及其制备方法
CN106756628A (zh) * 2017-01-06 2017-05-31 江苏星火特钢有限公司 一种高硅含氮奥氏体不锈钢及其制备方法
CN108085597A (zh) * 2017-12-25 2018-05-29 永兴特种不锈钢股份有限公司 一种耐高温高浓度硫酸的奥氏体不锈钢
CN108220813B (zh) * 2018-03-29 2020-09-15 东北大学 一种特超级双相不锈钢及其合金成分优化设计方法

Also Published As

Publication number Publication date
CN112771181A (zh) 2021-05-07
US20210214825A1 (en) 2021-07-15
BR112021003856B1 (pt) 2024-02-06
EP3844311A1 (en) 2021-07-07
CA3108890A1 (en) 2020-03-05
BR112021003856A2 (pt) 2021-05-18
MA53483A (fr) 2021-12-08
JOP20210024A1 (ar) 2020-02-29
WO2020046735A1 (en) 2020-03-05

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