EP0861913A1 - Phosphorhaltige Eisenpulver - Google Patents
Phosphorhaltige Eisenpulver Download PDFInfo
- Publication number
- EP0861913A1 EP0861913A1 EP98102700A EP98102700A EP0861913A1 EP 0861913 A1 EP0861913 A1 EP 0861913A1 EP 98102700 A EP98102700 A EP 98102700A EP 98102700 A EP98102700 A EP 98102700A EP 0861913 A1 EP0861913 A1 EP 0861913A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- phosphorus
- iron
- powder
- content below
- 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.)
- Granted
Links
Classifications
-
- 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
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
- C22C33/0214—Using a mixture of prealloyed powders or a master alloy comprising P or a phosphorus compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
- B22F9/305—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis of metal carbonyls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Definitions
- the invention relates to phosphorus-containing iron powder and a method their manufacture.
- Powder made of iron-phosphorus alloys are used, for example in question where mechanical properties such as hardness and brittleness are adjustable via the phosphorus content.
- Iron-phosphorus alloys can also be produced by melting a mixture of iron filings and P 2 O 5 with carbon powder or without the addition of coal. Iron-phosphorus alloys and iron phosphides are also formed in the reduction of Fe 3 PO 4 by hydrogen or carbon or in the reduction of a mixture of calcium phosphate and Fe 2 O 3 by carbon.
- the processes mentioned generally require high temperatures. Around To react iron with phosphorus, the first must at least until be heated to red heat.
- the iron-phosphorus alloys obtained by reduction also have a high content of minor components.
- Ferrophosphorus contains as Minor components 1 - 9% silicon and other metals such as titanium, Vanadium, chrome and manganese.
- the object of the present invention is a method for the production of phosphorus-containing iron powder with widely variable Phosphorus content and the lowest possible proportion of secondary components to provide.
- the invention is based on known processes for producing phosphorus-containing Iron powder, in which metallic iron with elementary Phosphorus heated and the product obtained is ground into powder.
- the method according to the invention is characterized in that metallic Iron in the form of finely divided carbonyl iron is used.
- finely divided carbonyl iron is carbonyl iron powder and carbonyl iron whiskers understood.
- Carbonyl iron powder and carbonyl iron whiskers can be made by known methods by thermal decomposition of iron pentacarbonyl in the gas phase be obtained, e.g. as in Ullmann's Encyclopedia of Industrial Chemistry, 5th Edition, Vol. A 14, page 599 or in DE 3 428 121 or in DE 3 940 347 described, and consist of particularly pure metallic Iron.
- the high purity of the powder or whiskers is due to the high Purity of iron pentacarbonyl conditional.
- powders or whiskers are formed.
- Carbonyl iron powder is a gray, finely divided powder made of metallic iron with a low content of minor components, which essentially consists of spherical particles with an average particle diameter of up to 10 ⁇ m consists.
- mechanically hard, not reduced ones can be used Carbonyl iron powder or mechanically soft, reduced carbonyl iron powder be used.
- the non-reduced carbonyl iron powders preferably used in the process according to the invention have an iron content of> 97% by weight, a carbon content of ⁇ 1.0% by weight, a nitrogen content of ⁇ 1.0% by weight and an oxygen content of ⁇ 0, 5% by weight.
- the average particle diameter of the powder particles is preferably between 1 and 10 ⁇ m, particularly preferably between 1.5 and 5.0 ⁇ m, and their specific surface area (BET) is preferably between 0.2 and 2.5 m 2 / g.
- the reduced carbonyl iron powders preferably used in the process according to the invention have an iron content of> 99.5% by weight, a carbon content of ⁇ 0.06% by weight, a nitrogen content of ⁇ 0.1% by weight and an oxygen content of ⁇ 0.4% by weight.
- the average particle diameter of the powder particles is preferably 1-8 ⁇ m, particularly preferably 4.0-8.0 ⁇ m.
- the specific surface area of the powder particles is preferably 0.2-2.5 m 2 / g.
- Carbonyl iron whiskers are very fine, polycrystalline iron threads.
- the one in the Processes according to the invention preferably use carbonyl iron whiskers consist of filiform arrangements of spheres with diameters of the beads between 0.1-1 ⁇ m, the threads of different lengths have and can form balls, and have an iron content of> 83.0 % By weight, a carbon content of ⁇ 8.0% by weight, a nitrogen content of ⁇ 4.0% by weight and an oxygen content of ⁇ 7.0% by weight.
- the carbonyl iron powders preferably used in the process according to the invention and whiskers have a very low content of foreign metals on, mostly below the detection limit of the atomic absorption analysis lies and on the preparation from the very pure starting compound Iron pentacarbonyl is based.
- the carbonyl iron powder contains the following proportions of other foreign elements: nickel ⁇ 100 ppm, chromium ⁇ 150 ppm, molybdenum ⁇ 20 ppm, arsenic ⁇ 2 ppm, lead ⁇ 10 ppm, Cadmium ⁇ 1 ppm, copper ⁇ 5 ppm, manganese ⁇ 10 ppm, mercury ⁇ 1 ppm, sulfur ⁇ 10 ppm, silicon ⁇ 10 ppm and zinc ⁇ 10 ppm.
- Carbonyl iron powders are preferred in the process according to the invention used.
- Elemental phosphorus can be used in all known modifications, i.e. as white, red, black or violet phosphorus can be used.
- the red phosphorus used in the process according to the invention can be used as Minor ingredient in particular still contain water.
- the reaction is carried out at temperatures above room temperature.
- a heatable tube made of a heat-resistant material such as quartz can be used.
- Carbonyl iron powder whiskers and elemental phosphorus are mixed intensively.
- the Reaction mixture of carbonyl iron powder or whiskers and elementary Phosphorus is in the reaction vessel until the exothermic onset Reaction heated up. After the onset of the reaction, the temperature may rise continue to rise due to the heat of reaction.
- the implementation is preferred carried out at a temperature above 300 ° C, particularly preferred at a temperature between 380 ° C and 550 ° C.
- the reaction is preferably carried out largely with the exclusion of atmospheric oxygen. This can be done, for example Reaction in an inert gas atmosphere.
- The is preferred Implemented in an inert gas atmosphere made of nitrogen.
- the reaction is preferably carried out at atmospheric pressure.
- An advantage of the process according to the invention is that the iron-phosphorus ratio the powder can be chosen by choosing the starting composition can be varied.
- Carbonyl iron powder and phosphorus are preferably in a mass ratio between 99.9: 0.1% and 30: 70% implemented, especially preferably in a mass ratio between 99: 1% and 70: 30%.
- the phosphorus content of the obtained phosphorus-containing iron powder between 0.1 and 80% by weight lie. It is preferably between about 0.5 and 20% by weight, particularly preferably between about 1 and 10% by weight.
- Another advantage of the method according to the invention is that due to the purity of the raw materials - low content of secondary components of the powder obtained.
- the content of the phosphorus-containing invention Iron powder on the elements Ni, Cr, Mo, As, Pb, Cd, Cu, Mn, Hg, S, Si and Zn become essentially when using high purity phosphorus through the content of these elements in the carbonyl iron powder used limited. It can be less than 0.035% by weight in total.
- the carbon content of the powder is preferably below 5% by weight, particularly preferably below 1% by weight.
- the nitrogen content of the powder is preferred below 5% by weight, particularly preferably below 1% by weight.
- the hydrogen content of the powder is preferably below 1% by weight, particularly preferably below 0.5% by weight.
- the content of the powder in other foreign elements is preferably below the limits mentioned above for carbonyl iron powder.
- the carbon content can be below 0.1% by weight and the nitrogen content can be reduced to below 0.01% by weight.
- the product obtained is subsequently - for example by grinding - mechanically crushed into a powder.
- the mechanical properties of the phosphorus-containing ones according to the invention Iron powders are particularly determined by their phosphorus content.
- the Powders are therefore particularly advantageous for applications in which defined mechanical properties such as hardness or brittleness required are used.
- Preferred applications of the phosphorus-containing iron powder according to the invention are in the field of powder metallurgy.
- the powder metallurgy is a special field of material production and processing, in the powdered Metallic-based materials by pressing and / or sintering Shaped bodies are connected.
- Preferred applications are, for example compression molding and powder injection molding ("metal injection molding").
- the phosphorus-containing iron powder according to the invention can be used alone or mixed with other metal powders - e.g. made of nickel, cobalt, bronze - for Manufacture of iron alloys are used.
- the fine particle according to the invention can phosphorus-containing iron, for example, also for embedding industrial diamonds in cutting and grinding tools as well as for the production of Metal ceramics, so-called cermets, are used.
- a nitrogen stream (10 l / h) is passed through the tube during the experiment headed.
- the temperature is measured using thermocouples, one of which the oven temperature, a second one that protrudes directly into the powder, the temperature of the reaction mixture.
- the iron powders produced according to Examples 1-3 consist of iron and iron phosphides of different stoichiometry (FeP, Fe 2 P and Fe 3 P).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Hard Magnetic Materials (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims (9)
- Verfahren zur Herstellung von phosphorhaltigem Eisenpulver, bei dem metallisches Eisen mit elementarem Phosphor gemischt und erhitzt und das erhaltene Produkt zu Pulver zerkleinert wird, dadurch gekennzeichnet, daß metallisches Eisen in Form von feinteiligem Carbonyleisen eingesetzt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Verfahren bei einer Temperatur oberhalb 300°C durchgeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß feinteiliges Carbonyleisen mit elementarem Phosphor in einer Inertgasatmosphäre erhitzt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß elementarer Phosphor in Form von rotem Phosphor eingesetzt wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als feinteiliges Carbonyleisen Carbonyleisenpulver mit den MerkmalenKohlenstoffgehalt unter 1 Gew.-%Stickstoffgehalt unter 1 Gew.-%Sauerstoffgehalt unter 0,5 Gew.-%
Gehalt an weiteren Fremdelementen insgesamt unter 0,1 Gew.-% eingesetzt wird. - Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß als feinteiliges Carbonyleisen Carbonyleisenpulver mit den MerkmalenKohlenstoffgehalt unter 0,06 Gew.-%Stickstoffgehalt unter 0,1 Gew.-%Sauerstoffgehalt unter 0,4 Gew.-%
Gehalt an weiteren Fremdelementen insgesamt unter 0,1 Gew.-% eingesetzt wird. - Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß feinteiliges Carbonyleisen mit elementarem Phosphor in einem Massenverhältnis zwischen 99 : 1 % und 70 : 30 % erhitzt wird.
- Phosphorhaltiges Eisenpulver mit den MerkmalenPhosphorgehalt zwischen 0,1 und 80 Gew.-%,Kohlenstoffgehalt unter 1 Gew.-%,Stickstoffgehalt unter 1 Gew.-%,Wasserstoffgehalt unter 0,5 Gew.-%,Gehalt an weiteren, von Sauerstoff verschiedenen Fremdelementen insgesamt unter 0,1 %,mittlerer Teilchendurchmesser < 10 µm,
herstellbar nach einem Verfahren gemäß einem der Ansprüche 1 bis 6. - Phosphorhaltiges Eisenpulver nach Anspruch 8 mit den MerkmalenKohlenstoffgehalt unter 0,06 Gew.-%,Stickstoffgehalt unter 0,1 Gew.-%,Wasserstoffgehalt unter 0,4 Gew.-%.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19706525A DE19706525A1 (de) | 1997-02-19 | 1997-02-19 | Phosphorhaltige Eisenpulver |
DE19706525 | 1997-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861913A1 true EP0861913A1 (de) | 1998-09-02 |
EP0861913B1 EP0861913B1 (de) | 2001-05-09 |
Family
ID=7820807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98102700A Expired - Lifetime EP0861913B1 (de) | 1997-02-19 | 1998-02-17 | Phosphorhaltige Eisenpulver |
Country Status (10)
Country | Link |
---|---|
US (1) | US6180235B1 (de) |
EP (1) | EP0861913B1 (de) |
JP (1) | JP4165921B2 (de) |
KR (1) | KR100562457B1 (de) |
AT (1) | ATE201053T1 (de) |
DE (2) | DE19706525A1 (de) |
ES (1) | ES2157619T3 (de) |
IL (1) | IL123168A (de) |
RU (1) | RU2211113C2 (de) |
TW (1) | TW555610B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108046230A (zh) * | 2017-12-16 | 2018-05-18 | 蒋央芳 | 一种一步法制备纳米无水磷酸铁的方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006080302A1 (ja) * | 2005-01-25 | 2006-08-03 | Tix Corporation | 複合耐摩耗部材及びその製造方法 |
US20110020110A1 (en) * | 2008-10-06 | 2011-01-27 | Flodesign Wind Turbine Corporation | Wind turbine with reduced radar signature |
RU2541527C2 (ru) * | 2009-10-27 | 2015-02-20 | Басф Се | Устойчивые к тепловому старению полиамиды с огнезащитой |
ES2531430T3 (es) * | 2009-10-27 | 2015-03-16 | Basf Se | Poliamidas resistentes al envejecimiento por calor |
RU2458760C2 (ru) * | 2010-10-25 | 2012-08-20 | Трофимов Сергей Иванович | Устройство для получения железного порошка, содержащего фосфор |
GB201221425D0 (en) * | 2012-11-28 | 2013-01-09 | Faradion Ltd | Metal-containing compound |
CN103386493A (zh) * | 2013-07-19 | 2013-11-13 | 江西悦安超细金属有限公司 | 一种用于金刚石工具的羰基铁磷粉的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB808163A (en) * | 1956-02-11 | 1959-01-28 | Hoeganaesmetoder Ab | Improvements relating to sintered frictional materials |
GB824147A (en) * | 1956-12-17 | 1959-11-25 | Gen Aniline & Film Corp | Alloyed flocks from metal carbonyls and halides |
EP0409647A2 (de) * | 1989-07-21 | 1991-01-23 | Sumitomo Metal Mining Company Limited | Verfahren zur Herstellung gesinterter Formkörper einer Fe-P-Legierung mit weichmagnetischen Eigenschaften |
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US2199944A (en) * | 1935-06-01 | 1940-05-07 | Shell Dev | Lubricant |
US3110747A (en) * | 1960-06-13 | 1963-11-12 | Shell Oil Co | Homogeneous hydrogenation catalysis |
US3355439A (en) * | 1963-10-30 | 1967-11-28 | Union Carbide Corp | Polymers of coordination complexes of vinylphosphines and metal salts, and process for preparing same |
US3438805A (en) * | 1966-04-06 | 1969-04-15 | Du Pont | Chemical metallizing process |
US3959220A (en) * | 1970-10-27 | 1976-05-25 | Cincinnati Milacron Chemicals, Inc. | Polymer additives comprising transition metal complexes with trivalent phosphorous compounds |
US3869453A (en) * | 1971-06-18 | 1975-03-04 | American Cyanamid Co | Iron carbonyl complex of aromatic azo compounds complexed with particular phosphine arsine or stibine compounds |
US4012399A (en) * | 1971-12-16 | 1977-03-15 | Cincinnati Milacron Chemicals, Inc. | Transition metal complexes with trivalent phosphorus compounds |
US4152179A (en) * | 1972-03-27 | 1979-05-01 | Allegheny Ludlum Industries, Inc. | Process for producing phosphorous-bearing soft magnetic material |
US4047983A (en) * | 1973-11-20 | 1977-09-13 | Allegheny Ludlum Industries, Inc. | Process for producing soft magnetic material |
US4115158A (en) * | 1977-10-03 | 1978-09-19 | Allegheny Ludlum Industries, Inc. | Process for producing soft magnetic material |
US4201576A (en) * | 1978-08-17 | 1980-05-06 | Haley George D | Method for refining ferrophosphorus for use in the production of phosphorus-containing steel |
US4196136A (en) * | 1978-11-06 | 1980-04-01 | E. I. Du Pont De Nemours And Company | Ligated transition metal derivatives of heteropolyanions |
US4236945A (en) * | 1978-11-27 | 1980-12-02 | Allegheny Ludlum Steel Corporation | Phosphorus-iron powder and method of producing soft magnetic material therefrom |
US4252672A (en) * | 1979-12-04 | 1981-02-24 | Xerox Corporation | Preparation of colloidal iron dispersions by the polymer-catalyzed decomposition of iron carbonyl and iron organocarbonyl compounds |
JPS59145756A (ja) * | 1983-02-08 | 1984-08-21 | Hitachi Powdered Metals Co Ltd | 内燃機関の動弁機構部材用焼結合金の製造方法 |
DE3428121A1 (de) | 1984-07-31 | 1986-02-13 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von eisenpulver |
US4929468A (en) * | 1988-03-18 | 1990-05-29 | The United States Of America As Represented By The United States Department Of Energy | Formation of amorphous metal alloys by chemical vapor deposition |
DE3940347C2 (de) | 1989-12-06 | 1997-02-20 | Basf Ag | Verfahren zur Herstellung von Eisenwhiskers |
US5796018A (en) * | 1997-01-29 | 1998-08-18 | Procedyne Corp. | Process for coating iron particles with phosphorus and forming compacted articles |
-
1997
- 1997-02-19 DE DE19706525A patent/DE19706525A1/de not_active Withdrawn
-
1998
- 1998-02-03 IL IL12316898A patent/IL123168A/xx not_active IP Right Cessation
- 1998-02-11 TW TW087101857A patent/TW555610B/zh active
- 1998-02-12 US US09/022,672 patent/US6180235B1/en not_active Expired - Lifetime
- 1998-02-17 AT AT98102700T patent/ATE201053T1/de active
- 1998-02-17 ES ES98102700T patent/ES2157619T3/es not_active Expired - Lifetime
- 1998-02-17 DE DE59800678T patent/DE59800678D1/de not_active Expired - Lifetime
- 1998-02-17 EP EP98102700A patent/EP0861913B1/de not_active Expired - Lifetime
- 1998-02-18 KR KR1019980004918A patent/KR100562457B1/ko not_active IP Right Cessation
- 1998-02-18 JP JP03588798A patent/JP4165921B2/ja not_active Expired - Fee Related
- 1998-02-19 RU RU98103521/02A patent/RU2211113C2/ru not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB808163A (en) * | 1956-02-11 | 1959-01-28 | Hoeganaesmetoder Ab | Improvements relating to sintered frictional materials |
GB824147A (en) * | 1956-12-17 | 1959-11-25 | Gen Aniline & Film Corp | Alloyed flocks from metal carbonyls and halides |
EP0409647A2 (de) * | 1989-07-21 | 1991-01-23 | Sumitomo Metal Mining Company Limited | Verfahren zur Herstellung gesinterter Formkörper einer Fe-P-Legierung mit weichmagnetischen Eigenschaften |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108046230A (zh) * | 2017-12-16 | 2018-05-18 | 蒋央芳 | 一种一步法制备纳米无水磷酸铁的方法 |
CN108046230B (zh) * | 2017-12-16 | 2021-01-29 | 蒋央芳 | 一种一步法制备纳米无水磷酸铁的方法 |
Also Published As
Publication number | Publication date |
---|---|
ES2157619T3 (es) | 2001-08-16 |
TW555610B (en) | 2003-10-01 |
JPH10298613A (ja) | 1998-11-10 |
KR100562457B1 (ko) | 2006-05-25 |
JP4165921B2 (ja) | 2008-10-15 |
EP0861913B1 (de) | 2001-05-09 |
KR19980071458A (ko) | 1998-10-26 |
US6180235B1 (en) | 2001-01-30 |
DE19706525A1 (de) | 1998-08-20 |
IL123168A (en) | 2001-01-11 |
IL123168A0 (en) | 1998-09-24 |
DE59800678D1 (de) | 2001-06-13 |
ATE201053T1 (de) | 2001-05-15 |
RU2211113C2 (ru) | 2003-08-27 |
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