CN113305288B - Fe-Cr-Al-Cu-Ni alloy for tail gas purifying device of military diesel vehicle and preparation method thereof - Google Patents
Fe-Cr-Al-Cu-Ni alloy for tail gas purifying device of military diesel vehicle and preparation method thereof Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 22
- 229910002482 Cu–Ni Inorganic materials 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000011812 mixed powder Substances 0.000 claims abstract description 63
- 239000000843 powder Substances 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 33
- 229910007948 ZrB2 Inorganic materials 0.000 claims abstract description 30
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 claims abstract description 30
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 30
- -1 iron-chromium-aluminum-copper-nickel Chemical compound 0.000 claims abstract description 29
- 238000000746 purification Methods 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 12
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 9
- 239000010431 corundum Substances 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910018054 Ni-Cu Inorganic materials 0.000 claims abstract description 5
- 229910018481 Ni—Cu Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 3
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 2
- 239000011651 chromium Substances 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000012856 weighed raw material Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
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- B22F1/0003—
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses an iron-chromium-aluminum-copper-nickel alloy for a military diesel vehicle tail gas purification device and a preparation method thereof, wherein the iron-chromium-aluminum-copper-nickel alloy comprises the following components in percentage by weight: 75-80% of Fe-Cr-Al mixed powder, 10-15% of Ni-Cu mixed powder and 5-15% of mixed powder of silicon carbide powder and zirconium diboride powder. The preparation method comprises the steps of firstly mixing the weighed raw materials, uniformly stirring, then placing the mixture into a corundum crucible, carrying out heat preservation for 30-60min at 1500-1650 ℃ in a high temperature furnace protected by inert gas, and cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy. The invention adds the mixed powder of metallic copper and nickel and silicon carbide and zirconium diboride on the basis of not changing the main components of iron, chromium and aluminum, and ensures the flexibility of the alloy and improves the high-temperature oxidation resistance of the alloy through a certain process. The engine body adopting the alloy of the invention as a diesel engine tail gas purifying device is very suitable for military diesel vehicles.
Description
Technical Field
The invention relates to an iron-chromium-aluminum-copper-nickel alloy for a tail gas purification device of a military diesel vehicle and a preparation method thereof.
Background
The diesel vehicle is a vehicle using diesel as fuel and using a diesel engine as power, and has more efficient fuel economy and absolute advantages in power, safety and running cost compared with the gasoline vehicle. The diesel truck, in particular to a heavy diesel truck, bears the heavy duty of highway petrol transportation by virtue of the characteristics of large traction force and strong loading capacity. However, while diesel vehicles bring convenience to our life and make great contribution to the road transportation industry of China, the problem of environmental pollution is increasingly serious, and tail gas of diesel vehicles becomes a main source of atmospheric pollution, so that the harm to the ecological environment and human health is not small.
In a common diesel vehicle tail gas purifying system, a urea solution is sprayed or a catalyst is coated on the surface of the diesel vehicle tail gas purifying system in combination with iron-chromium-aluminum to catalyze and decompose harmful gases in the tail gas. Iron-chromium-aluminum is an aluminum alloy, and has the advantages of excellent heat resistance, oxidation resistance, sulfur resistance and carburization resistance, light specific gravity, high surface load, high resistivity, high use temperature, long service life and the like. In general, an exhaust gas purifying device of a diesel engine adopts iron-chromium-aluminum as a matrix, and a catalyst is coated on the surface of the matrix to catalyze and decompose harmful gases in the exhaust gas. Iron-chromium-aluminum can be generally used below 700 ℃ for a long time, the exhaust port temperature of a diesel engine is generally about 650 ℃, and the higher the exhaust temperature is along with the rising of diesel engine power, the different from a civil diesel vehicle, the military diesel vehicle has the advantages of large discharge capacity, strong power and the like, and is widely applied to the field of military industry, but the tail gas emission pollution degree of the military diesel vehicle is larger, the tail gas temperature is higher, generally higher than 700 ℃, even the temperature can reach 850 ℃, the iron-chromium-aluminum is gradually deformed and oxidized at high temperature, and finally becomes invalid, so that the traditional tail gas purifying device of the diesel vehicle cannot be applied to the military diesel vehicle.
Disclosure of Invention
The invention aims to solve the problem that an iron-chromium-aluminum matrix of a conventional civil common diesel vehicle tail gas purification device cannot be applied to a military diesel vehicle, and provides an iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device, which comprises the following components in percentage by weight: 75-80% of Fe-Cr-Al mixed powder, 10-15% of Ni-Cu mixed powder and 5-15% of mixed powder of silicon carbide powder and zirconium diboride powder. Wherein the Fe-Cr-Al mixed powder is used as a base material, copper in the Ni-Cu mixed powder can provide flexibility, and nickel can promote the exertion of copper performance and improve the temperature resistance. The silicon carbide powder and the zirconium diboride powder can further improve the temperature resistance, and the two mixed powders are mixed with the base material according to the proportion, so that the high-temperature oxidation resistance of the whole alloy is improved.
Preferably, the weight percentages of the iron powder, the chromium powder and the aluminum powder in the iron-chromium-aluminum mixed powder are respectively 70%, 25% and 5%.
Preferably, the weight percentages of copper powder and nickel powder in the nickel-copper mixed powder are respectively 20% -40% and 60% -80%.
Preferably, the weight percentages of copper powder and nickel powder in the nickel-copper mixed powder are respectively 20% -40% and 60% -80%.
Preferably, the weight percentages of the silicon carbide powder and the zirconium diboride powder in the mixed powder of the silicon carbide and the zirconium diboride are 40-60% and 40-60% respectively.
The invention also provides a preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle, which comprises the following steps:
(1) Weighing 75-80% of Fe-Cr-Al mixed powder, 10-15% of Ni-Cu mixed powder and 5-15% of mixed powder of silicon carbide and zirconium diboride, stirring in a planetary ball mill at a rotating speed of 200-260r/min for 60-90min, wherein the mixing is difficult to be uniform when the rotating speed is too low, and boride particles are embedded into the entering particles and cannot be well dispersed in all metal phases when the rotating speed is too high;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving the temperature for 30-60min at 1500-1650 ℃ in a high temperature furnace protected by inert gas, wherein the sintering temperature is low and cannot form a good uniform phase, namely, no burn-through exists, the sintering time is short, the same time is not burnt-through, and the sintering time is too long and is not cost-effective;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
The beneficial effects of the invention are as follows:
the invention adds the mixed powder of metallic copper and nickel and silicon carbide and zirconium diboride on the basis of not changing the main components of iron, chromium and aluminum, and ensures the flexibility of the alloy and improves the high-temperature oxidation resistance of the alloy through a certain process. The engine body adopting the alloy of the invention as a diesel engine tail gas purifying device is very suitable for military diesel vehicles.
Detailed Description
The present invention will now be described in further detail.
Example 1
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device comprises the following raw materials in percentage by weight:
75% of Fe-Cr-Al mixed powder, wherein the weight percentages of the Fe powder, the Cr powder and the Al powder are respectively 70%, 25% and 5%; 10% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are respectively 20% and 80%;
15% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are 40% and 60% respectively.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 200r/min for 60min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 30min at 1500 ℃ in a high-temperature furnace protected by inert gas;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
Example 2
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device of the embodiment comprises the following components in percentage by weight:
78% of Fe-Cr-Al mixed powder, wherein the weight percentages of the Fe powder, the Cr powder and the Al powder are respectively 70%, 25% and 5%; 10% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are 25% and 75% respectively;
12% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are 45% and 55% respectively.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 220r/min for 70min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 35min in a high-temperature furnace protected by inert gas at 1550 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
Example 3
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device of the embodiment comprises the following components in percentage by weight:
76% of Fe-Cr-Al mixed powder, wherein the weight percentages of the Fe powder, the Cr powder and the Al powder are respectively 70%, 25% and 5%; 14% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are 30% and 70% respectively;
10% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are respectively 50% and 50%.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 230r/min for 65min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 50min in a high-temperature furnace protected by inert gas at 1600 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
Example 4
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device of the embodiment comprises the following components in percentage by weight:
78% of Fe-Cr-Al mixed powder, wherein the weight percentages of the Fe powder, the Cr powder and the Al powder are respectively 70%, 25% and 5%; 14% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are 35% and 65% respectively;
8% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are 55% and 45% respectively.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 250r/min for 80min;
(2) Putting the uniformly stirred metal powder into a corundum crucible, and preserving heat for 55min in a high-temperature furnace protected by inert gas at 1620 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
Example 5
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device of the embodiment comprises the following components in percentage by weight:
79% of Fe-Cr-Al mixed powder, wherein the weight percentages of the Fe powder, the Cr powder and the Al powder are respectively 70%, 25% and 5%; 14% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are 38% and 62% respectively;
and 7% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are 58% and 42% respectively.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 210r/min for 65min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 55min in a high-temperature furnace under the protection of inert gas at 1680 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
Example 6
The iron-chromium-aluminum-copper-nickel alloy material for the military diesel vehicle tail gas purification device of the embodiment comprises the following components in percentage by weight:
80% of iron-chromium-aluminum mixed powder, wherein the weight percentages of iron powder, chromium powder and aluminum powder are respectively 70%, 25% and 5%; 15% of nickel-copper mixed powder, wherein the weight percentages of the copper powder and the nickel powder are 40% and 60% respectively;
5% of mixed powder of silicon carbide powder and zirconium diboride powder, wherein the weight percentages of the silicon carbide powder and the zirconium diboride powder are respectively 60% and 40%.
The preparation method of the Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle comprises the following steps:
(1) Weighing iron-chromium-aluminum mixed powder, nickel-copper mixed powder and mixed powder of silicon carbide and zirconium diboride according to weight fractions, stirring in a planetary ball mill at a rotating speed of 260r/min for 90min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 60min in a high-temperature furnace under the protection of inert gas at 1650 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
The iron-chromium-aluminum-copper-nickel alloys prepared in the above examples 1-6 were tested according to the national standard GB/T228-2002 to obtain elongation at break; according to GB/T4338-1995 high temperature tensile test standard of metal materials, testing the temperature at which the tensile strength is greater than 1MPa in a high temperature environment to obtain the highest use temperature; flexibility was measured using the number of bends before bending a 2mm thick sheet of metal 180 degrees. The test values are shown in Table 1.
Table 1:
| test item | Tensile Strength | Elongation at break | Maximum use temperature | Number of times of bending |
| Example 1 | 780MPa | 18％ | 1260℃ | 9 |
| Example 2 | 730MPa | 19％ | 1210℃ | 12 |
| Example 3 | 700MPa | 23％ | 1170℃ | 15 |
| Example 4 | 690MPa | 24％ | 1130℃ | 18 |
| Example 5 | 680MPa | 24％ | 1110℃ | 25 |
| Example 6 | 650MPa | 25％ | 1090℃ | 28 |
From the above table 1, it can be seen that the performance of the present invention is excellent, especially the highest use temperature of each embodiment is above 1000 ℃, which is significantly improved compared with iron-chromium-aluminum alloy, and the present invention also maintains good flexibility, and is very suitable for military diesel vehicles.
The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide a portable electronic device capable of performing various changes and modifications without departing from the scope of the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (3)
1. The Fe-Cr-Al-Cu-Ni alloy material for the tail gas purification device of the military diesel vehicle is characterized by comprising the following raw materials in percentage by weight: 75-80% of Fe-Cr-Al mixed powder, 10-15% of Ni-Cu mixed powder and 5-15% of mixed powder of silicon carbide powder and zirconium diboride powder;
the weight percentages of the iron powder, the chromium powder and the aluminum powder in the iron-chromium-aluminum mixed powder are respectively 70%, 25% and 5%;
the weight percentages of copper powder and nickel powder in the nickel-copper mixed powder are respectively 20% -40% and 60% -80%;
the weight percentages of the silicon carbide powder and the zirconium diboride powder in the mixed powder of the silicon carbide and the zirconium diboride are 40-60 percent and 40-60 percent respectively.
2. A method for preparing the iron-chromium-aluminum-copper-nickel alloy material for the tail gas purification device of the military diesel vehicle as set forth in claim 1, which is characterized by comprising the following steps:
(1) Weighing 75-80% of iron-chromium-aluminum mixed powder, 10-15% of nickel-copper mixed powder and 5-15% of mixed powder of silicon carbide and zirconium diboride according to the weight percentage, and mixing at the rotating speed of 200-260 r/min;
(2) Placing the uniformly stirred metal powder into a corundum crucible, and preserving heat for 30-60min in a high-temperature furnace under the protection of inert gas at 1500-1650 ℃;
(3) And cooling to room temperature to obtain the Fe-Cr-Al-Cu-Ni alloy.
3. The preparation method according to claim 2, wherein the step (1) is carried out by stirring in a planetary ball mill and mixing for 60 to 90 minutes.
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| SE504208C2 (en) * | 1995-04-26 | 1996-12-09 | Kanthal Ab | Method of manufacturing high temperature resistant moldings |
| SE517894C2 (en) * | 2000-09-04 | 2002-07-30 | Sandvik Ab | FeCrAl alloy |
| CN101172257A (en) * | 2006-11-01 | 2008-05-07 | 张世臣 | Bubble iron chromium aluminum applied in vent gas filtering and catalyst carrier, and production technique thereof |
| KR101212786B1 (en) * | 2010-08-10 | 2012-12-14 | 프라운호퍼-게젤샤프트 츄어 푀르더룽 데어 안게반텐 포르슝에.파우. | Open-porous metal foam body and a method of fabricating the same |
| CN104128200B (en) * | 2014-07-22 | 2017-02-15 | 清华大学苏州汽车研究院（吴江） | copper-based SCR catalyst and preparation method thereof |
| CN105081327A (en) * | 2015-08-28 | 2015-11-25 | 南通高欣耐磨科技股份有限公司 | High-strength and shock-resistance type metal ceramic composite lining plate and preparation method thereof |
| CN108774698A (en) * | 2018-07-05 | 2018-11-09 | 赵云飞 | A kind of Aludirome plate and preparation method thereof |
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