GB1287710A - Process for increasing the corrosion resistance of austenitic stainless steels - Google Patents

Process for increasing the corrosion resistance of austenitic stainless steels

Info

Publication number
GB1287710A
GB1287710A GB26820/71A GB2682071A GB1287710A GB 1287710 A GB1287710 A GB 1287710A GB 26820/71 A GB26820/71 A GB 26820/71A GB 2682071 A GB2682071 A GB 2682071A GB 1287710 A GB1287710 A GB 1287710A
Authority
GB
United Kingdom
Prior art keywords
increasing
austenitic stainless
april
corrosion resistance
stainless steels
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.)
Expired
Application number
GB26820/71A
Other languages
English (en)
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1287710A publication Critical patent/GB1287710A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB26820/71A 1970-04-02 1971-04-19 Process for increasing the corrosion resistance of austenitic stainless steels Expired GB1287710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7004678.A NL164328C (nl) 1970-04-02 1970-04-02 Werkwijze voor het verhogen van de weerstand tegen cor- rosie van austenitische chroom-nikkelstalen, alsmede werkwijze voor de bereiding van ureum in apperatuur waarvan de weerstand tegen corrosie aldus is verhoogd.

Publications (1)

Publication Number Publication Date
GB1287710A true GB1287710A (en) 1972-09-06

Family

ID=19809733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26820/71A Expired GB1287710A (en) 1970-04-02 1971-04-19 Process for increasing the corrosion resistance of austenitic stainless steels

Country Status (9)

Country Link
US (1) US3720548A (xx)
JP (1) JPS515630B1 (xx)
BE (1) BE765197A (xx)
CA (1) CA949436A (xx)
DE (1) DE2116201A1 (xx)
ES (1) ES389762A1 (xx)
FR (1) FR2085804B1 (xx)
GB (1) GB1287710A (xx)
NL (1) NL164328C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9890114B2 (en) 2013-05-28 2018-02-13 Toyo Engineering Corporation Urea synthesis method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503763C3 (de) * 1975-01-30 1978-03-16 Uranit Uran-Isotopentrennungs- Gesellschaft Mbh, 5170 Juelich Verfahren zur Bildung einer korrosionsverhütenden, oxidischen Schutzschicht auf korrosionsempfindlichen Stählen
DE3364579D1 (en) * 1982-06-03 1986-08-28 Montedison Spa Method for avoiding the corrosion of strippers in urea manufacturing plants
CH691479A5 (de) 1996-12-06 2001-07-31 Siemens Ag Oberflächenbehandlung von Stahl.
JP4112056B2 (ja) * 1997-12-18 2008-07-02 東洋エンジニアリング株式会社 改良された尿素の合成方法および装置
CN1545565A (zh) * 2001-08-31 2004-11-10 Dsm Ip财产有限公司 使金属耐腐蚀的方法
GB0124846D0 (en) * 2001-10-16 2001-12-05 Unilever Plc Corrosion protection process
ITMI20120013A1 (it) 2012-01-09 2013-07-10 Saipem Spa Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576680A (en) * 1945-09-15 1951-11-27 Electro Chimie Metal Method for increasing the resistance to corrosion of stainless steel
US2680766A (en) * 1951-03-23 1954-06-08 Du Pont Method of inhibiting corrosion in urea synthesis reactors
NL77361C (xx) * 1953-04-15
US2890974A (en) * 1957-12-02 1959-06-16 Fairchild Engine & Airplane Passivation of stainless steel alloys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9890114B2 (en) 2013-05-28 2018-02-13 Toyo Engineering Corporation Urea synthesis method

Also Published As

Publication number Publication date
NL164328B (nl) 1980-07-15
FR2085804B1 (xx) 1974-03-08
ES389762A1 (es) 1973-06-01
DE2116201A1 (de) 1971-11-04
NL7004678A (xx) 1971-10-05
FR2085804A1 (xx) 1971-12-31
JPS515630B1 (xx) 1976-02-21
BE765197A (fr) 1971-10-04
NL164328C (nl) 1980-12-15
US3720548A (en) 1973-03-13
CA949436A (en) 1974-06-18

Similar Documents

Publication Publication Date Title
GB1422389A (en) Process for treatment of waste gases
GB1287710A (en) Process for increasing the corrosion resistance of austenitic stainless steels
GB1303392A (xx)
Kerns et al. Stress corrosion cracking and hydrogen embrittlement in high strength steels
KR840007798A (ko) 가압수형원자로의 오염제거방법(加壓水形原子爐의 汚染除去方法)
GB1226529A (xx)
FR2238768A1 (en) Thermo-mechanical treatment of austenitic steel - followed by controlled quenching giving mech props similar to expensive alloys
MX3304E (es) Procedimiento para preparar un alfa-aminoacido
JPS51115222A (en) Method and apparatus for heat treatment of steels in non-explosive atm osphere
ATE44553T1 (de) Zusammensetzungen und verfahren zum chemischen polieren von stahloberflaechen.
GB844110A (en) An improved process and apparatus for the manufacture of urea
GB1161988A (en) A Process for the Production of Inosine
ES399672A1 (es) Instalacion para tratar a temperatura elevada una solucion que contiene carbamato amonico.
FR2086293A1 (fr) Procede et appareil pour le degazage et la purification de masses metalliques fondues
GB1250934A (xx)
GB958633A (en) A process of recovering melamine
Okano et al. Corrosion Testing by the Polarographic Method
Gliner The Relation of Case Depth to Carburization Duration
JPS5297417A (en) Operating method of pressure vessel using hydrogen having high tempera ture and pressure
GB987066A (en) Process for the preparation of z-hydroxy-?-aminocaproic acid
GB1011580A (en) Surface treatment of mild steel
Kraev et al. Precipitation and Intergranular Corrosion of Free-Machining Cr--Mn--N Stainless Calcium-Alloyed Steel After Isothermal Annealing
Alekseev Thermodynamics of Hydrogen Reaction With Carbon of Molybdenum-Alloyed Steels
BE763760A (en) Ferritic stainless steels with improved - corrosion resistance
Bricout et al. Study of Retarded Rupture of Work-Hardened Austenitic Stainless Steel in Cathodic Hydrogen

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee