RU1808022C - Method for production heat-resistant protective coating on article of heat-resistant nickel alloys - Google Patents
Method for production heat-resistant protective coating on article of heat-resistant nickel alloysInfo
- Publication number
- RU1808022C RU1808022C SU4953109A RU1808022C RU 1808022 C RU1808022 C RU 1808022C SU 4953109 A SU4953109 A SU 4953109A RU 1808022 C RU1808022 C RU 1808022C
- Authority
- RU
- Russia
- Prior art keywords
- heat
- resistant
- article
- protective coating
- coating
- Prior art date
Links
- 239000011253 protective coating Substances 0.000 title description 3
- 229910000990 Ni alloy Inorganic materials 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 9
- 239000011651 chromium Substances 0.000 abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052804 chromium Inorganic materials 0.000 abstract description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052759 nickel Inorganic materials 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 5
- 150000007513 acids Chemical class 0.000 abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 abstract description 5
- 239000010941 cobalt Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 235000011167 hydrochloric acid Nutrition 0.000 abstract description 3
- 239000004615 ingredient Substances 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- LFSBSHDDAGNCTM-UHFFFAOYSA-N cobalt(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Co+2] LFSBSHDDAGNCTM-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Сущность изобретени состоит в том, что на поверхность издели нанос т суспензию , которую готов т путем предварительного растворени порошкообразных ингредиентов в равных количествах по массе в следующих кислотах: хрома (10-23) - в сол ной, никел (10-15) и кобальта (20-30)- в азотной, циркони (3-5), кремни (1-3) и оксида титана (3-5) - в смеси азотной и сол ной кислот, вз тых в соотношении 1:3, с последующим их перемешиванием, а затем провод т нагрев и выдержку при 700- - 750°С в течение 2,0-2,5 ч.The essence of the invention lies in the fact that a suspension is applied to the surface of the product, which is prepared by pre-dissolving the powdered ingredients in equal amounts by weight in the following acids: chromium (10-23) in hydrochloric, nickel (10-15) and cobalt (20-30) - in nitric, zirconium (3-5), silicon (1-3) and titanium oxide (3-5) - in a mixture of nitric and hydrochloric acids, taken in a ratio of 1: 3, followed by by stirring, and then heating and holding are carried out at 700 - 750 ° C for 2.0-2.5 hours.
Description
Изобретение относитс к металлургии, а именно к химико-термической обработке, и может быть использовано дл получени жаростойких защитных покрытий на детал х , работающих в агрессивных средах при высоких температурах,The invention relates to metallurgy, in particular to chemical-thermal treatment, and can be used to obtain heat-resistant protective coatings on parts operating in aggressive environments at high temperatures,
Разработано жаростойкое эмульсионное покрытие, обеспечивающее повышенную сопротивл емость сульфидной коррозии в сочетании с высокой термостойкостью геометрически сложных деталей из жаропрочных сплавов без снижени прочностных характеристик конструкций.A heat-resistant emulsion coating has been developed that provides increased resistance to sulfide corrosion in combination with high heat resistance of geometrically complex parts made of heat-resistant alloys without reducing the structural strength characteristics.
Способ включает нанесение на поверхность детали.суспензии на основе кислот, содержащей хром, никель, кобальт, цирконий , оксид титана, кремний и термическую обработку,The method includes applying to the surface of the part. Suspensions based on acids containing chromium, nickel, cobalt, zirconium, titanium oxide, silicon and heat treatment,
Каждый компонент в порошкообразном состо нии раствор етс в кислотах в равныхEach component in powder form dissolves in acids in equal
количествах по массе: хром (10-25) - в сол ной; никель (10-15) и кобальт (20-30)- в азотной; цирконий (3-5), кремний (1-3) и оксид титана (3-5) - в смеси азотной и сол ной кислот, вз тых в соотношении 1:3 (так называемой царской водке). При объединении этих растворов образуетс состав, используемый дл получени покрыта .amounts by weight: chromium (10-25) - in salt; nickel (10-15) and cobalt (20-30) - in nitrogen; zirconium (3-5), silicon (1-3) and titanium oxide (3-5) - in a mixture of nitric and hydrochloric acids, taken in a ratio of 1: 3 (the so-called aqua regia). When these solutions are combined, the composition used to form the coating is formed.
На поверхность детали окунанием или проливкой (в случае необходимости защиты внутренних развитых поверхностей) наноситс пленка раствора. Затем деталь просушиваетс на воздухе, помещаетс в термическую печь при 100°С, нагреваетс с печью до 700- 750°С и выдерживаетс при этой температуре в течение 2-7 ч. Покрытие имеет темно-серый цвет и толщину пор дка 20 мкм.A solution film is applied to the surface of the part by dipping or pouring (if necessary to protect internal developed surfaces). The part is then dried in air, placed in a thermal furnace at 100 ° C, heated with an oven to 700-750 ° C and maintained at this temperature for 2-7 hours. The coating has a dark gray color and a thickness of the order of 20 microns.
Минимальна температура формировани защитной пленки 700°С, врем 2 ч. Ни00Minimum temperature of forming a protective film 700 ° С, time 2 hours. Ni00
оabout
0000
оabout
ю юyu
ыs
же этих параметров идет недостаточный процесс ее отвердевани . При 750°С в течение 2,5 и более часов происходит процесс формировани защитной пленки, котора обладает повышенной сопротивл емостью сульфидной коррозии, высокой пластичностью , термостойкостью в услови х работы в газовой среде, содержащей сернистые соединени . Способ дает возможность защищать детали различных сечений, размеров, форм.however, these parameters are not sufficiently cured. At 750 ° C for 2.5 hours or more, the process of forming a protective film takes place, which has an increased resistance to sulfide corrosion, high ductility, and heat resistance under conditions of operation in a gaseous environment containing sulfur compounds. The method makes it possible to protect parts of various sections, sizes, shapes.
Покрытие представл ет собой тонкую однородную пленку на поверхности детали. При формировании пленки не используетс основной сплав и не уменьшаетс несущее сечение детали.The coating is a thin, uniform film on the surface of the part. In the formation of the film, the main alloy is not used and the bearing section of the part is not reduced.
Покрытие имеет структуру твердого раствора кобальта и хрома на основе никел Ni(Co, Сг), включает оксиды СгсОз и ZrOz- Наблюдаютс включени фазы, обогащенной кремнием. Концентраци элементов в слое следующа . мас,%: Ni основа; 13 Сг; 10Co;5Sl;2Tf; 1,5 Zr.The coating has the structure of a solid solution of cobalt and chromium based on nickel Ni (Co, Cr), and includes oxides CrcO3 and ZrOz. Inclusions of a phase enriched in silicon are observed. The concentration of elements in the layer is as follows. wt.%: Ni base; 13 Cg; 10Co; 5Sl; 2Tf; 1.5 Zr.
Покрытие сохранило защитные свойства после окислени на воздухе при 900,950, 1000, 1050, 1100°С до 300 ч. Концентраци элементов в поверхностном слое, мае.%: NI основа; 10 Сг; 9 Со; 3 Si; 1,5 TI; 1,0 Zr.The coating retained its protective properties after oxidation in air at 900.950, 1000, 1050, 1100 ° C for up to 300 hours. The concentration of elements in the surface layer, May.%: NI base; 10 Cr; 9 Co; 3 Si; 1.5 TI; 1.0 Zr.
Сопротивление сульфидной коррозии оценивали в среде, содержащей, мас.%: 3 NaCI; 40 N32804; 5 Рв20з; 10 СаО; 3,5 МдО; 3,5 35 SI02,. при температурах цикла: минимальна 100 и максимальна 980°С с продолжительностью 120 с. Через 1200 циклов испытаний покрытие сохранило свою целостность без отслаивани и сколов защитного сло .Sulfide corrosion resistance was evaluated in a medium containing, wt.%: 3 NaCI; 40 N32804; 5 Rv20z; 10 CaO; 3.5 MDO; 3,5 35 SI02 ,. at cycle temperatures: minimum 100 and maximum 980 ° C with a duration of 120 s. After 1200 test cycles, the coating maintained its integrity without peeling and chips of the protective layer.
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55
00
55
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Пластичность покрыти оценивали путем испытани на.изгиб балочек с покрытием сечением 3x4 мм, длиной 45 мм на оптикомеханической установке с изменением углов поворота сечени в области упругих деформаций . Оценка пластичности производилась по значению угла, при котором в покрытии по вл лась перва трещина. Деформаци на изгиб растрескивани составл ет около 1,0%.The ductility of the coating was evaluated by testing the bending of the beams with a coating of 3x4 mm cross section and a length of 45 mm on an optomechanical installation with a change in the angle of rotation of the cross section in the region of elastic deformations. The plasticity was estimated by the value of the angle at which the first crack appeared in the coating. The flexural strain of cracking is about 1.0%.
Покрытие снижает шероховатость поверхности образца на величину ARZ 0,1- -0,3.The coating reduces the surface roughness of the sample by an ARZ value of 0.1--0.3.
Формула.изобретени The formula of the invention
Способ получени жаростойкого защитного покрыти на издели х из жаропрочных никелевых сплавов, включающий приготовление и нанесение на поверхность издели суспензии, содержащей порошок кремни , хрома и циркони и последующий нагрев с выдержкой при 700-750°С в течение 2-2,5 ч, отличающийс тем, что, с целью повышени сопротивлени сульфидной коррозии и термостойкости покрыти , а также технологичности способа за счет об-:, работки геометрически сложных изделий , суспензию готов т на основе кислот и она дополнительно содержит никель, кобальт и оксид титана, причем ее приготовление ведут путем предварительного растворени порошкообразных ингредиентов в равных количествах по массе в следующих кислотах: хрома (10-25) - в сол ной, никел (10-15) и кобальта (20-30) - в азотной , циркони (3-5), кремни (1-3) и оксида титана (3-5) - в смеси азотной и сол ной кислот, вз тых в соотношении 1:3 с последующим их смешением.A method of obtaining a heat-resistant protective coating on products made of heat-resistant nickel alloys, comprising preparing and applying to the surface of the product a suspension containing silicon, chromium and zirconium powder and subsequent heating with exposure at 700-750 ° C for 2-2.5 hours, characterized the fact that, in order to increase the resistance of sulfide corrosion and heat resistance of the coating, as well as the manufacturability of the method due to :- work of geometrically complex products, the suspension is prepared on the basis of acids and it additionally contains nickel, cobalt titanium oxide, and its preparation is carried out by preliminary dissolving the powdered ingredients in equal quantities by weight in the following acids: chromium (10-25) in hydrochloric, nickel (10-15) and cobalt (20-30) in nitric, zirconium (3-5), silicon (1-3) and titanium oxide (3-5) - in a mixture of nitric and hydrochloric acids, taken in a ratio of 1: 3 with their subsequent mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4953109 RU1808022C (en) | 1991-05-12 | 1991-05-12 | Method for production heat-resistant protective coating on article of heat-resistant nickel alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4953109 RU1808022C (en) | 1991-05-12 | 1991-05-12 | Method for production heat-resistant protective coating on article of heat-resistant nickel alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU1808022C true RU1808022C (en) | 1993-04-07 |
Family
ID=21583317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4953109 RU1808022C (en) | 1991-05-12 | 1991-05-12 | Method for production heat-resistant protective coating on article of heat-resistant nickel alloys |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU1808022C (en) |
-
1991
- 1991-05-12 RU SU4953109 patent/RU1808022C/en active
Non-Patent Citations (1)
| Title |
|---|
| Самсонов Г.В. и Эпин А.П. Тугоплавкие покрыти . М.: Металлурги , 1973, с.288-289. * |
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