EP0933443B1 - Verwendung von Stahlpulver auf der Basis Fe-Cr-Si für korrosionsbeständige Beschichtungen - Google Patents
Verwendung von Stahlpulver auf der Basis Fe-Cr-Si für korrosionsbeständige Beschichtungen Download PDFInfo
- Publication number
- EP0933443B1 EP0933443B1 EP99101813A EP99101813A EP0933443B1 EP 0933443 B1 EP0933443 B1 EP 0933443B1 EP 99101813 A EP99101813 A EP 99101813A EP 99101813 A EP99101813 A EP 99101813A EP 0933443 B1 EP0933443 B1 EP 0933443B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- corrosion
- alloy
- chromium
- silicon
- mass
- 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 - Lifetime
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
Definitions
- the invention relates to coatings made of ferritic Steel alloys on metal components, primarily low alloy steel, preferably pipes and Pipe walls, for the purpose of corrosion protection against hot media containing chlorine and / or chloride and / or sulfate e.g. for plant components for thermal Waste disposal or copper refining.
- coated pipes in plants for thermal waste disposal has the advantage that the mechanically stressed pipe cross-section low-alloy steel and the component after thermal / mechanical criteria can be designed.
- the materials with the required high Corrosion resistance are only considered comparative thin layer used on the pipe surface.
- the Requirements for the mechanical properties of the Coating material are low, so that at its selection only the corrosion resistance and the Adhesion to the low-alloy substrate is crucial are.
- the coating of corrosively highly stressed Heat exchanger tubes in such systems are used primarily for Repair of corrosion damage as well as for prevention critical positions, already done.
- Variants used such as Alloy 625, one Nickel based alloy with 21.5% chromium, 9% molybdenum, 3.6% niobium and 2.5% iron and smaller proportions Al, Ti, Mn, Si and C, or NiCrBSi solders, the im Compared to iron higher resistance of nickel against chlorine corrosion.
- the invention is based on the idea that also ferritic steel alloys can be used provided that their chromium and silicon contents are sufficiently high are, so that the formation is very stable, the material passivating oxides also among those described above Corrosion conditions are preferred.
- the advantage such ferritic coatings lies in their low-alloy substrate material practically the same thermal expansion, which also ensures adhesion Thermal cycling is guaranteed.
- the high thermal conductivity of ferritic steel has an advantageous effect on heat transfer and therefore the surface temperature of the coating.
- Such coatings can be found in all plants in which gases containing chlorine and / or chloride and / or sulfate-containing dusts and deposits Cause corrosion problems, e.g. when burning Household waste, biomass and chemical waste as well as at Copper refining, used promisingly.
- the corrosion resistance of the alloys has been confirmed in aging experiments at 600 ° C.
- the samples of the alloys examined were completely embedded in deposits that come from the heat exchanger tubes of a waste incineration plant.
- the deposits were renewed every 2 weeks.
- the reaction gas consisted of 5 vol.% O 2 containing nitrogen, to which 500 vol. Ppm HCl had been added.
- the water content of the gases dried in a P 2 O 5 column was ⁇ 3 ⁇ 10 -5 mbar.
- the samples have been exposed to these conditions for various times (previously up to a maximum of 8 weeks).
- the loss of material due to corrosion has been determined mechanically and chemically by pickling in alkaline KMnO 4 solution and inhibited hydrochloric acid on the basis of the decrease in mass after removal of the corrosion products and deposits.
- the time-dependent material losses .DELTA.m due to corrosion determined in this way are plotted in FIG. 1 for various FeCrSi alloys and for Alloy 625.
- the corrosion rates of the FeCrSi alloys used according to the invention are up to an order of magnitude lower than that of Alloy 625, the material which is now predominantly used for coating.
- the comparative alloy Fe-30Cr-2Si which therefore contains less silicon than the steels to be used according to the invention, also has a significantly higher decrease in mass of 0.06 mg / mm 2 after 14 days.
- the local corrosion can be determined when the Take the minimum layer thickness into account by adding the am Cross section of the corrosive sample determined maximum Depth of the dimples in the metal surface from the area-specific mass change calculated cross-sectional decrease is added.
- Powder made from the FeCrSi alloy to be used according to the invention can be made by direct Atomizing the alloy melt or by induction drip melting rod-shaped electrodes from the corresponding alloy. The latter procedure was with Success in producing smaller amounts of Fe-35Cr-5Si powder applied.
- the application methods are thermal Spraying process provided. Due to requirements the tightness of the layer comes here in particular Flame spraying in question. Using high-speed flame spraying have already successfully applied coatings be performed, which also the desired Ensure protection against corrosion.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
- Paints Or Removers (AREA)
Description
Claims (3)
- Verwendung von Pulver einer ferritischen Stahllegierung mit (in Masse-%)mehr als 20 bis 50 % Chrom,5 bis 10 % Silizium,sowie wahlweisebis 4 % B,bis 5 % Mn,bis 1 % Mo,bis 0,1 % C
zum thermischen Beschichten von Metallteilen, die im Betrieb dem Korrosionsangriff durch heiße chlor- und/oder chlorid- und/oder sulfathaltige Medien ausgesetzt sind. - Verwendung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Stahllegierung (in Masse-%)25 bis 50 % Chrom und5 bis 8 % Silizium enthält.
- Verwendung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß es sich bei den Bauteilen um Anlagen zur thermischen Müllentsorgung oder zum Raffinieren von Kupfer handelt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803084A DE19803084B4 (de) | 1998-01-28 | 1998-01-28 | Verwendung von Stahlpulver auf der Basis Fe-Cr-Si für korrosionsbeständige Beschichtungen |
DE19803084 | 1998-01-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0933443A1 EP0933443A1 (de) | 1999-08-04 |
EP0933443B1 true EP0933443B1 (de) | 2002-04-03 |
Family
ID=7855816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99101813A Expired - Lifetime EP0933443B1 (de) | 1998-01-28 | 1999-01-28 | Verwendung von Stahlpulver auf der Basis Fe-Cr-Si für korrosionsbeständige Beschichtungen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0933443B1 (de) |
AT (1) | ATE215617T1 (de) |
DE (1) | DE19803084B4 (de) |
DK (1) | DK0933443T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2299458T3 (es) * | 2000-11-07 | 2008-06-01 | Sulzer Metco Osu Gmbh | Metodo de recubrimiento de superficie resistente a desgaste y/o corrosion y medios para la realizacion del mismo. |
CN109628830A (zh) * | 2018-12-28 | 2019-04-16 | 西安交通大学 | 一种核反应堆燃料包壳及包壳涂层用的FeCrSi合金材料及热处理方法 |
TWI758215B (zh) * | 2021-07-28 | 2022-03-11 | 國立清華大學 | 高鉻矽耐蝕鋼及其用途 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT186656B (de) * | 1952-09-10 | 1956-09-10 | Schoeller Bleckmann Stahlwerke | Legierungen für Gegenstände, die bei hohen Temperaturen, insbesondere gegen Vanadinpentoxyd widerstandsfähig sein sollen |
DE8717405U1 (de) * | 1987-07-08 | 1989-03-09 | Castolin S.A., Lausanne-St. Sulpice, Waadt/Vaud, Ch | |
DE3901028A1 (de) * | 1989-01-14 | 1990-07-19 | Bayer Ag | Nichtrostende knet- und gusswerkstoffe sowie schweisszusatzwerkstoffe fuer mit heisser, konzentrierter schwefelsaeure beaufschlagte bauteile |
JPH0379750A (ja) * | 1989-08-21 | 1991-04-04 | Kobe Steel Ltd | 鉄系溶射用粉末および溶射皮膜を有する機械・工作部品 |
US5643531A (en) * | 1989-12-12 | 1997-07-01 | Samsung Heavy Industry Co., Ltd. | Ferrous alloy composition and manufacture and coating methods of mechanical products using the same |
DE4104832A1 (de) * | 1991-02-16 | 1992-08-20 | Castolin Sa | Vorrichtung aus metall zum verschliessen von koksoefen und verfahren zu deren herstellung |
KR100253543B1 (ko) * | 1992-04-30 | 2000-04-15 | 에모또 간지 | 가공성이 우수한 Fe-Cr합금 |
JPH07243792A (ja) * | 1994-03-03 | 1995-09-19 | Kubota Corp | ボイラ用被覆鋼管 |
JPH0813117A (ja) * | 1994-07-04 | 1996-01-16 | Daiichi Meteko Kk | 耐摩耗性および耐焼き付き性に優れた溶射皮膜を形成したアルミニウム合金部材 |
US6171657B1 (en) * | 1995-12-18 | 2001-01-09 | Bender Machine, Inc. | Method of coating yankee dryers against wear |
-
1998
- 1998-01-28 DE DE19803084A patent/DE19803084B4/de not_active Expired - Fee Related
-
1999
- 1999-01-28 DK DK99101813T patent/DK0933443T3/da active
- 1999-01-28 AT AT99101813T patent/ATE215617T1/de active
- 1999-01-28 EP EP99101813A patent/EP0933443B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DK0933443T3 (da) | 2002-07-08 |
ATE215617T1 (de) | 2002-04-15 |
EP0933443A1 (de) | 1999-08-04 |
DE19803084A1 (de) | 1999-07-29 |
DE19803084B4 (de) | 2005-07-28 |
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