IT1032913B - Procedimento per mantenere a valori bassissimi il tasso di cianuro nei bagni di sali contenenti cianati - Google Patents

Procedimento per mantenere a valori bassissimi il tasso di cianuro nei bagni di sali contenenti cianati

Info

Publication number
IT1032913B
IT1032913B IT68273/75A IT6827375A IT1032913B IT 1032913 B IT1032913 B IT 1032913B IT 68273/75 A IT68273/75 A IT 68273/75A IT 6827375 A IT6827375 A IT 6827375A IT 1032913 B IT1032913 B IT 1032913B
Authority
IT
Italy
Prior art keywords
bathrooms
cyanide
keeping
procedure
rate
Prior art date
Application number
IT68273/75A
Other languages
English (en)
Original Assignee
Stephanois Rech Mec
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
Priority claimed from FR7417195A external-priority patent/FR2271307A1/fr
Priority claimed from FR7511166A external-priority patent/FR2307051A2/fr
Application filed by Stephanois Rech Mec filed Critical Stephanois Rech Mec
Application granted granted Critical
Publication of IT1032913B publication Critical patent/IT1032913B/it

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
    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/58—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 liquids, e.g. salt baths, liquid suspensions more than one element being applied in more than one step
    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/48—Nitriding
    • C23C8/50—Nitriding of ferrous surfaces
    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/52—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 liquids, e.g. salt baths, liquid suspensions more than one element being applied in one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Treating Waste Gases (AREA)
IT68273/75A 1974-05-17 1975-05-16 Procedimento per mantenere a valori bassissimi il tasso di cianuro nei bagni di sali contenenti cianati IT1032913B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7417195A FR2271307A1 (en) 1974-05-17 1974-05-17 Stabilising fused cyanate heat treatment baths - by introducing sulphur and carbonyl cpds. to reduce cyanide formation
FR7511166A FR2307051A2 (fr) 1975-04-10 1975-04-10 Procede pour maintenir a des valeurs tres basses le taux de cyanure dans les bains de sels contenant des cyanates

Publications (1)

Publication Number Publication Date
IT1032913B true IT1032913B (it) 1979-06-20

Family

ID=26218338

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68273/75A IT1032913B (it) 1974-05-17 1975-05-16 Procedimento per mantenere a valori bassissimi il tasso di cianuro nei bagni di sali contenenti cianati

Country Status (14)

Country Link
US (1) US4006043A (it)
JP (1) JPS596911B2 (it)
AR (1) AR202685A1 (it)
BR (1) BR7503026A (it)
CA (1) CA1049908A (it)
CH (1) CH606476A5 (it)
DD (1) DD118445A5 (it)
DE (1) DE2521903C2 (it)
ES (1) ES437450A1 (it)
GB (1) GB1504917A (it)
IT (1) IT1032913B (it)
NL (1) NL178981C (it)
SE (1) SE429448B (it)
SU (1) SU793410A3 (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL52591A (en) * 1977-07-25 1980-07-31 Israel Aircraft Ind Ltd Method of surface hardening stainless steel parts
DE3300488A1 (de) * 1983-01-08 1984-07-12 Degussa Ag, 6000 Frankfurt Regenerierungsmittel fuer kohlungssalzbaeder und verfahren zu deren herstellung
FR2688517B1 (fr) * 1992-03-10 1994-06-03 Stephanois Rech Procede de phosphatation de pieces en acier, pour ameliorer leurs resistances a la corrosion et a l'usure.
FR2693520B1 (fr) * 1992-07-10 1994-09-30 Stephanois Rech Mec Coussinet pour articulations ou paliers fortement chargés, avec une garniture frettée en feuillard roulé.
FR2708623B1 (fr) * 1993-08-06 1995-10-20 Stephanois Rech Mec Procédé de nitruration de pièces en métal ferreux, à résistance améliorée à la corrosion.
US5576066A (en) * 1993-08-10 1996-11-19 Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement Method of improving the wear and corrosion resistance of ferrous metal parts
FR2715943B1 (fr) * 1994-02-09 1996-05-15 Stephanois Rech Mec Composition de bains de sels à base de nitrates alcalins pour oxyder du métal ferreux et ainsi améliorer sa résistance à la corrosion.
FR2731232B1 (fr) * 1995-03-01 1997-05-16 Stephanois Rech Procede de traitement de surfaces ferreuses soumises a des sollicitations elevees de frottement
DE19832404C1 (de) * 1998-07-18 1999-10-21 Houghton Durferrit Gmbh Verfahren zur elektrolytischen Erzeugung von Cyanid in Nitrocarburierschmelzen
CN100386469C (zh) * 2003-11-14 2008-05-07 上海欧本表面处理技术有限公司 利用软氮化处理盐浴液对高速钢W6Mo5Cr4V2滑片或叶片的处理方法
CN100386468C (zh) * 2003-11-14 2008-05-07 上海欧本表面处理技术有限公司 一种利用软氮化盐浴处理液对不锈钢11Cr17滑片或叶片的处理方法
DE112008002699B4 (de) * 2007-10-09 2013-12-05 Gary Warren Zündkerzen-Sensorsonde mit einer gedruckten Leiterkarte, Zündkerzensensor mit der Zündkerzen-Sensorantenne und Verfahren zur Herstellung desselben
CN101906607A (zh) * 2009-06-04 2010-12-08 台州市百达制冷有限公司 9Cr18或9Cr18Mo不锈钢滑片(或叶片)的液体软氮化方法
CN102899604B (zh) * 2012-09-27 2015-07-29 南车戚墅堰机车车辆工艺研究所有限公司 金属表面盐浴氮碳共渗的方法
CN102994942A (zh) * 2012-12-16 2013-03-27 青岛森淼实业有限公司 压缩机滑片的氮化方法
CN103451595B (zh) * 2013-09-02 2015-09-23 中国科学院金属研究所 镁合金表面熔盐氧碳硫共渗耐腐蚀陶瓷涂层及制备和应用
KR101515840B1 (ko) * 2013-10-22 2015-05-04 디케이락 주식회사 부분 침탄질화 열처리된 스테인리스 페럴 및 그의 제조방법
CN111172491A (zh) * 2018-11-09 2020-05-19 宁波江丰电子材料股份有限公司 承载台表面的处理方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883543C (de) * 1947-02-19 1953-07-20 Applic Des Traitements De Surf Verfahren zur Erzeugung von Oberflaechenschichten grosser Abnutzungs-festigkeit auf Gegenstaenden aus Eisenlegierungen
US2562065A (en) * 1950-11-29 1951-07-24 American Cyanamid Co Carburizing salt bath
US2801154A (en) * 1953-12-31 1957-07-30 Ethyl Corp Preparation of metal cyanates
US2875095A (en) * 1956-10-06 1959-02-24 Gold Und Silber Scheldeanstalt Method of producing surface layers resistant to wear
US3022204A (en) * 1961-03-20 1962-02-20 Kolene Corp Process for nitriding metals
FR1406530A (fr) * 1964-05-28 1965-07-23 Hydromecanique Et Frottement S Procédé de traitement de surfaces métalliques et produits ainsi traités
DE1263447B (de) * 1964-06-15 1968-03-14 Gen Motors Corp Verfahren zur Herstellung eines cyanathaltigen Salzschmelzbades fuer die Einsatzhaertung von Stahl
US3303063A (en) * 1964-06-15 1967-02-07 Gen Motors Corp Liquid nitriding process using urea

Also Published As

Publication number Publication date
DE2521903C2 (de) 1982-05-27
NL178981C (nl) 1986-06-16
JPS50160142A (it) 1975-12-25
AR202685A1 (es) 1975-06-30
SE7505532L (sv) 1975-11-18
US4006043A (en) 1977-02-01
CH606476A5 (it) 1978-10-31
CA1049908A (en) 1979-03-06
NL7505638A (nl) 1975-11-19
SU793410A3 (ru) 1980-12-30
ES437450A1 (es) 1976-12-01
DE2521903A1 (de) 1975-12-04
DD118445A5 (it) 1976-03-05
BR7503026A (pt) 1976-04-13
JPS596911B2 (ja) 1984-02-15
NL178981B (nl) 1986-01-16
GB1504917A (en) 1978-03-22
SE429448B (sv) 1983-09-05

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940531