SU688534A1 - Method of chemical thermal treatment of metals and alloys - Google Patents

Method of chemical thermal treatment of metals and alloys

Info

Publication number
SU688534A1
SU688534A1 SU772450540A SU2450540A SU688534A1 SU 688534 A1 SU688534 A1 SU 688534A1 SU 772450540 A SU772450540 A SU 772450540A SU 2450540 A SU2450540 A SU 2450540A SU 688534 A1 SU688534 A1 SU 688534A1
Authority
SU
USSR - Soviet Union
Prior art keywords
alloys
metals
temperature
thermal treatment
chemical thermal
Prior art date
Application number
SU772450540A
Other languages
Russian (ru)
Inventor
Виктор Федорович Шатинский
Михаил Семенович Гойхман
Юрий Федорович Яценко
Анатолий Леонидович Бичуя
Original Assignee
Физико-Механический Институт Ан Украинской Сср
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 Физико-Механический Институт Ан Украинской Сср filed Critical Физико-Механический Институт Ан Украинской Сср
Priority to SU772450540A priority Critical patent/SU688534A1/en
Application granted granted Critical
Publication of SU688534A1 publication Critical patent/SU688534A1/en

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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
    • C23C10/22—Metal melt containing the element to be diffused

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Description

ным образом при верхнем значении температуры в цикле 900°С, а нижнем - 750°С.This way, with the upper temperature value in the cycle of 900 ° C, and the lower one - 750 ° C.

Термоциклирование по приведенным режимам позвол ет получить положительный эффект по сравнению с технологией получени  покрытий при изотермическом насыщении или при односторонней смене температуры .Thermal cycling according to the given regimes makes it possible to obtain a positive effect in comparison with the technology for producing coatings with isothermal saturation or with one-sided change of temperature.

При насыщении меди при посто нной температзре 650°С в течение 20 ч получают покрыти  толщиной в 15-20 мкм, тогда как при термоциклировании толщина составл ет 40-45 мкм. При этом в поверхностных сло х покрыти  концентраци  паллади  на 15-18% больше, чем в процессе изотермической выдержки.When copper is saturated at a constant temperature of 650 ° C for 20 hours, coatings of a thickness of 15-20 microns are obtained, whereas during thermal cycling the thickness is 40-45 microns. At the same time, in the surface layers of the coating, the palladium concentration is 15–18% higher than in the isothermal holding process.

При насыщении стали в услови х посто нной температуры 900°С в течение 25 ч образуетс  покрытие до 30 мкм, а применение циклических теплосмен позвол ет получить толщину до 100-120 мкм.When the steel is saturated under conditions of a constant temperature of 900 ° C, a coating of up to 30 microns is formed within 25 hours, and the use of cyclic heat shifts allows a thickness of up to 100-120 microns to be obtained.

В изотермических ус лбВи х концентраци  паллади  достигает 12%, тогда как термоциклирование увеличивает ее до 75%.In isothermal materials, the palladium concentration reaches 12%, while thermal cycling increases it to 75%.

Claims (1)

Формула изобретени Invention Formula Способ химико-термической обработки металлов и сплавов, включающий диффузионное насыщение по ступенчатому режиму отличающийс  тем, что, с целью увеличени  толщины покрыти  и улучшени  его качества, диффузионное насыщение ведут по следующему ступенчатому режиму:The method of chemical-thermal treatment of metals and alloys, including diffusion saturation in a step mode, characterized in that, in order to increase the thickness of the coating and improve its quality, diffusion saturation is carried out according to the following step mode: нагревают материал издели  до температуры 0,6-0,7 температуры плавлени , выдерживают при этой температуре 20-30 мин., охлаждают на 150-200°С, выдерживают ири этой температуре 15-20 мин. с повторением цикла в целом 10-12 раз.heat the material of the product to a temperature of 0.6-0.7 melting point, maintain at this temperature for 20-30 minutes, cool to 150-200 ° C, and keep the temperature at this temperature for 15-20 minutes. with repeating the cycle as a whole 10-12 times.
SU772450540A 1977-02-08 1977-02-08 Method of chemical thermal treatment of metals and alloys SU688534A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772450540A SU688534A1 (en) 1977-02-08 1977-02-08 Method of chemical thermal treatment of metals and alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772450540A SU688534A1 (en) 1977-02-08 1977-02-08 Method of chemical thermal treatment of metals and alloys

Publications (1)

Publication Number Publication Date
SU688534A1 true SU688534A1 (en) 1979-09-30

Family

ID=20694812

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772450540A SU688534A1 (en) 1977-02-08 1977-02-08 Method of chemical thermal treatment of metals and alloys

Country Status (1)

Country Link
SU (1) SU688534A1 (en)

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