SU912774A1 - Composition for chromizing products of carbon iron alloys - Google Patents

Composition for chromizing products of carbon iron alloys Download PDF

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Publication number
SU912774A1
SU912774A1 SU792857842A SU2857842A SU912774A1 SU 912774 A1 SU912774 A1 SU 912774A1 SU 792857842 A SU792857842 A SU 792857842A SU 2857842 A SU2857842 A SU 2857842A SU 912774 A1 SU912774 A1 SU 912774A1
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SU
USSR - Soviet Union
Prior art keywords
composition
products
chromizing
chromium
iron alloys
Prior art date
Application number
SU792857842A
Other languages
Russian (ru)
Inventor
Игорь Андрианович Гончаренко
Евгений Маркусович Гринберг
Станислав Алексеевич Головин
Вера Яковлевна Котенева
Наталья Николаевна Банина
Original Assignee
Тульский Политехнический Институт
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.)
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Application filed by Тульский Политехнический Институт filed Critical Тульский Политехнический Институт
Priority to SU792857842A priority Critical patent/SU912774A1/en
Application granted granted Critical
Publication of SU912774A1 publication Critical patent/SU912774A1/en

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    • 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
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces
    • C23C10/42—Chromising of ferrous surfaces in the presence of volatile transport additives, e.g. halogenated substances

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemically Coating (AREA)

Description

II

Изобретение относитс к металлургии , в частности к химико-термической обработке,а именно к диффузионному хромированию в порошках. Известен состав шихты 1 дл  диффузионного хромировани  чугуна, представл ющий собой смесь порошков хрома, окиси алюмини  и хлорида аммони , вз тых в следующих соотношени х , вес.%:This invention relates to metallurgy, in particular to chemical heat treatment, in particular to diffusion chromium plating in powders. The composition of charge 1 for diffusion chromium plating of cast iron is known, which is a mixture of powders of chromium, alumina and ammonium chloride, taken in the following ratios, wt%:

Окись аммони  14-17 Хлорид аммони  1-1,7 ХромОстальноеAmmonium Oxide 14-17 Ammonium Chloride 1-1,7 Chromium Else

Однако после хромировани  чугунных . изделий в шихте этого состава с использованием хлористого аммони  в качестве активатора поверхность изделий получаетс  негладкой,изъеденной , пористой. Кроме того, повьшге1Гй. ное содержание металлического хрома делает эту шихту дорогосто щей.However, after chromium cast iron. products in the charge of this composition using ammonium chloride as an activator, the surface of the products is uneven, corroded, porous. In addition, more. The content of metallic chromium makes this mixture expensive.

Наиболее близок к предложенному состав дл  диффузионного хромировани  t21, содержащий, вес.%:Closest to the proposed composition for diffusion chromium plating t21, containing, wt.%:

Хром10Chrome10

Железо10Iron10

ХлористыйChloride

аммоний10ammonium10

Окись алюмини  70 - Однако большое количество активатора - хлористого аммони  делает эту смесь огнеопасной во врем  диффузионного обжига, а малое содержание порошка хрома не позвол ет Alumina 70 - However, a large amount of activator — ammonium chloride — makes this mixture flammable during diffusion roasting, and the low content of chromium powder does not allow

10 получить смесь с достаточной насыщающей способностью. Использование хлористого аммони  не позвол ет получить качественные (беепористые, равномершле по толщине} покрыти  10 to obtain a mixture with sufficient saturability. The use of ammonium chloride does not allow to obtain high-quality (beporous, equally thick) coatings.

15 и способствует снижению класса ше ,роховатости обрабатываемой поверхности , что приводит к необходимости дополнительной операции (шлифовки;.15 and contributes to the reduction of the class above, the roughness of the treated surface, which leads to the need for additional operations (grinding ;.

XIXi

Цель изобретени  - улучшение качества поверхностного сло  за счет снижени  его пористости, интенсификаг ци  процесса насьш ени .The purpose of the invention is to improve the quality of the surface layer by reducing its porosity, intensifying the process of saturation.

Claims (2)

Формула изобретенияClaim Состав для хромирования изделий из железоуглеродистых сплавов, содержащий порошок хрома, порошок железа, окись алюминия и активатор, от личающийся тем, чг о, с целью улучшения качества поверхностного слоя за счет снижения его пористости и шероховатости и интенсификации процесса насыщения, в качестве активатора он содержит фтористый алюминий при следующем компонентов, вес.%:A composition for chromium plating of products from iron-carbon alloys containing chromium powder, iron powder, alumina and an activator, characterized in that for the purpose of improving the quality of the surface layer by reducing its porosity and roughness and intensifying the saturation process, it contains an activator aluminum fluoride in the following components, wt.%: Порошок железа Окись алюминия Фтористый алюминий Порошок хромаIron Powder Aluminum Oxide Aluminum Fluoride Chromium Powder Ист очники информации, .принятые во внимание при экспертизеSources of information taken into account in the examination 1. Авторское свидетельство СССР № 536252 ,кл. С 23 С 9/02, 1976.1. USSR Copyright Certificate No. 536252, cl. C 23 C 9/02, 1976. 2. >Ж Коррозия, 1971, № 5, реф. 5К309.2.> F Corrosion, 1971, No. 5, ref. 5K309.
SU792857842A 1979-12-21 1979-12-21 Composition for chromizing products of carbon iron alloys SU912774A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792857842A SU912774A1 (en) 1979-12-21 1979-12-21 Composition for chromizing products of carbon iron alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792857842A SU912774A1 (en) 1979-12-21 1979-12-21 Composition for chromizing products of carbon iron alloys

Publications (1)

Publication Number Publication Date
SU912774A1 true SU912774A1 (en) 1982-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU792857842A SU912774A1 (en) 1979-12-21 1979-12-21 Composition for chromizing products of carbon iron alloys

Country Status (1)

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SU (1) SU912774A1 (en)

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