CN106916986A - A kind of inexpensive Mo2FeB2The preparation method of based ceramic metal - Google Patents
A kind of inexpensive Mo2FeB2The preparation method of based ceramic metal Download PDFInfo
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- CN106916986A CN106916986A CN201710097111.2A CN201710097111A CN106916986A CN 106916986 A CN106916986 A CN 106916986A CN 201710097111 A CN201710097111 A CN 201710097111A CN 106916986 A CN106916986 A CN 106916986A
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- powder
- cermet
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/058—Mixtures of metal powder with non-metallic powder by reaction sintering (i.e. gasless reaction starting from a mixture of solid metal compounds)
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/14—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides
Abstract
The present invention relates to structure function material preparation field, particularly a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, belongs to structure function material preparation field.Using molybdenum-iron powder, ferro-boron powder, vanadium iron powder, carbonyl iron, Cr, Ni, C as reaction raw materials, the method sintered using reaction in-situ prepares Mo to the present invention2FeB2Based ceramic metal.Cermet prepared by the present invention is with Mo2FeB2It is ceramic hard phase, is metallic binding phase with the iron-based body containing Cr, Ni, C.The advantage is that：(1) each composition materials of cermet are prepared few, it is cost-effective；(2) Mo is substituted with molybdenum-iron powder, reduces preparation cost 40% ~ 50%, and cermet performance is suitable with cermet obtained in pure Mo；(3) cermet preparation energy consumption is low, and technique is easily controlled, it is adaptable to which industrialization needs.
Description
Technical field
The present invention relates to structure function material preparation field, particularly a kind of inexpensive Mo2FeB2The preparation of based ceramic metal
Method.
Background technology
Mo2FeB2Based ceramic metal is prepared from by reaction in-situ sintering process, is with Mo2FeB2It is ceramic hard phase,
Constituted by metallic binding phase of iron-based body, with a series of outstanding performances of cermet：(1) abrasion resistance properties are good, used as work
The wear extent of mould itself wear extent and machined material at work is all smaller；(2) corrosion-and high-temp-resistant can be good, and
And with hardness and bending strength higher；(3) thermal coefficient of expansion is close with steel, thus as steel matrix coating when, with reference to
Intensity is higher, it is adaptable to prepare the clad material of steel matrix；(4) density is relatively low, only 3/5ths of hard alloy.
Although Mo2FeB2Based ceramic metal function admirable, and the not noble metal such as tungstenic, cobalt, but in current research,
Mostly carry out dispensing to prepare Mo according to the underlying scale of Fe-6B-48Mo2FeB2Based ceramic metal, the addition of Mo powder is larger,
Cause relatively costly.Although substituting Mo powder with cheap molybdenum-iron powder prepares cermet, can not but replace completely.
The content of the invention
The present invention is in order to reduce Mo2FeB2The preparation cost of based ceramic metal, solving molybdenum-iron powder can only partly substitute Mo powder systems
The problem of standby cermet, and provide a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal.
Technical solution of the present invention is as follows：
A kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, concretely comprises the following steps：
1）Dispensing：Reaction powder is weighed, the reaction powder is included with molybdenum-iron powder, ferro-boron powder, carbonyl iron, Cr, Ni, C；
2）Batch mixing ball milling：Reaction raw materials will be weighed and be put into wet-milling in ball mill with sintered carbide ball；
3）Dry：Will be through step 2）The compound of ball milling is dried in being put into drying box；
4）Compacting：Dry powder is obtained the rectangle pressed compact of 7mm × 7mm × 30mm using room temperature compression molding；
5）Vacuum-sintering：Cermet is prepared using the method for vacuum-sintering；
6）Grinding shaping：By step 5）Obtained cermet polishing, fine grinding shaping is obtained Mo2FeB2Based ceramic metal product.
Preferably, the step 1）React powder mass percent be：62.5% ~ 69.5% molybdenum-iron powder, 25% ~ 26%
Ferro-boron powder, 0 ~ 3.5% vanadium iron powder, 0 ~ 7% carbonyl iron, 0 ~ 2.1% Cr, 0 ~ 2.5% Ni, 0 ~ 0.2% C.
Preferably, the step 2）Wet-milling condition is：The wet-milling time is 36 ~ 50h, and ratio of grinding media to material is 4:1~7:1, ball-milling medium
It is absolute ethyl alcohol, powder is 1 with the mass ratio of absolute ethyl alcohol:1~1:1.5, drum's speed of rotation is 200 rad/min ~ 300 rad/
min。
Preferably, the step 3）Drying condition is insulation 1.5h ~ 2.5h at 80 DEG C ~ 100 DEG C.
Preferably, the step 3）Dried powder is sieved with the sub-sieve for being not less than 40 mesh and carries out step 4 again）Compacting
Operation.
Preferably, the step 4）Pressure is 300MPa ~ 450Mpa.
Preferably, the step 5）At 1100 DEG C ~ 1250 DEG C, soaking time is 0 ~ 60min to sintering temperature.
Beneficial effects of the present invention：
1）The invention provides a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal.The method reality is with molybdenum-iron powder
Mo powder is replaced to prepare Mo completely2FeB2Based ceramic metal, greatly reduces preparation cost, and obtained Mo2FeB2Base Metal
Ceramic performance is not less than cermet obtained in pure Mo powder.
2）Inexpensive Mo2FeB2Based ceramic metal is to substitute pure Mo powder with molybdenum-iron powder to be prepared, obtained cermet
It is with Mo2FeB2It is ceramic hard phase, is metallic binding phase with the iron-based body containing Cr, Ni, C.
3）The contrast of front and rear cost of material：Mo powder price is 260 yuan/kilogram in first wife's material；Molybdenum-iron powder price in the application
It is 80 yuan/kilogram；Remaining cost of material is respectively yuan/kilogram of FeB powder 100, yuan/kilogram of Fe powder 60, yuan/kilogram of Cr powder 90, Ni
Yuan/kilogram of powder 130, yuan/kilogram of C powder 5.Both compare cost savings 40% ~ 50%.
4）Molybdenum-iron powder, ferro-boron powder and carbonyl iron dust in the application, Mo is generated under reaction sintering effect2FeB2Ceramics
Hard phase, and other raw materials then it is more or less be dissolve in iron or hard phase in, dissolve in and then form the iron containing Cr, Ni, C in iron
Parent metal Binder Phase, dissolves in and then strengthen cermet performance in hard phase.The wherein effect of C is deoxidation；Cr elements are present in
In Binder Phase, increase the corrosion resistance of Binder Phase, exist and the anisotropy that hard phase is then reduced in hard phase, raising metal pottery
The mechanical property of porcelain；Ni is primarily present in Binder Phase, is beneficial to Binder Phase and is changed into austenite, so as to improve cermet
Mechanical property.
5）According to the difference to cermet performance requirement, carbonyl iron dust, Cr powder, Ni powder and C powder can be appropriate in raw material
Adjustment content, especially carbonyl iron dust, can adjust according to the content of Cr powder, Ni powder and C powder, and appropriate increases or decreases carbonyl
The content of iron powder.
6）The application is optimized according to the change of raw material to cermet process, it is ensured that the performance of final products.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is inexpensive Mo of the invention2FeB2Based ceramic metal preparation technology flow.
Fig. 2 is Mo prepared by the present invention2FeB2The XRD diffraction patterns of based ceramic metal.
Specific embodiment
Technical scheme is described further with reference to example.
Embodiment 1
As shown in figure 1, a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, it comprises the following steps：
(1) dispensing：Weigh molybdenum-iron powder 62.62g, ferro-boron powder 25.93g, carbonyl iron dust 6.78g, Cr powder 2.08g, Ni powder 2.42g,
C powder 0.17g adds up to 100g as reaction raw materials.
(2) batch mixing ball milling：The powder that will match somebody with somebody and sintered carbide ball are put into wet, 48h in ball mill, and wherein ratio of grinding media to material is 5:
1, ball-milling medium is absolute ethyl alcohol, and powder is 1 with the mass ratio of absolute ethyl alcohol:1, drum's speed of rotation is 250rad/min；
(3) dry：Dried being put into drying box through the compound of ball milling, 2h is incubated at 80 DEG C；
(4) suppress：Dry powder is obtained the rectangle pressed compact of 7mm × 7mm × 30mm using room temperature compression molding, wherein pressing
Power is 350MPa；
(5) vacuum-sintering：Cermet is prepared using the method for vacuum-sintering, at 1200 DEG C, soaking time is sintering temperature
40min；
(6) shaping is ground：By cermet obtained above polishing, surface defect that may be present is removed, fine grinding shaping is obtained
Mo2FeB2Based ceramic metal product.
The consistency for using drainage to determine cermet is 7.8 g/cm3；Cermet is determined using universal testing machine
Bending strength be 1500 MPa；The hardness for using Rockwell hardness instrument to determine cermet is HRA 86.
Embodiment 2
As shown in figure 1, a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, it comprises the following steps：
(1) dispensing：Weigh molybdenum-iron powder 66.3g, ferro-boron powder 25.93g, carbonyl iron dust 3.1g, Cr powder 2.08g, Ni powder 2.42g, C
Powder 0.17g adds up to 100g as reaction raw materials.
(2) batch mixing ball milling：The powder that will match somebody with somebody and sintered carbide ball are put into wet, 48h in ball mill, and wherein ratio of grinding media to material is 5:
1, ball-milling medium is absolute ethyl alcohol, and powder is 1 with the mass ratio of absolute ethyl alcohol:1, drum's speed of rotation is 250rad/min；
(3) dry：Dried being put into drying box through the compound of ball milling, 2h is incubated at 80 DEG C；
(4) suppress：Dry powder is obtained the rectangle pressed compact of 7mm × 7mm × 30mm using room temperature compression molding, wherein pressing
Power is 350MPa；
(5) vacuum-sintering：Cermet is prepared using the method for vacuum-sintering, at 1200 DEG C, soaking time is sintering temperature
40min；
(6) shaping is ground：By cermet obtained above polishing, surface defect that may be present is removed, fine grinding shaping is obtained
Mo2FeB2Based ceramic metal product.
The consistency for using drainage to determine cermet is 8 g/cm3；Cermet is determined using universal testing machine
Bending strength is 1720 MPa；The hardness for using Rockwell hardness instrument to determine cermet is HRA 90.
Embodiment 3
As shown in figure 1, a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, it comprises the following steps：
(1) dispensing：Weigh molybdenum-iron powder 66.4g, ferro-boron powder 25.93g, vanadium iron powder 3g, carbonyl iron dust 0g, Cr powder 2.08g, Ni powder
2.42g, C powder 0.17g add up to 100g as reaction raw materials.
(2) batch mixing ball milling：The powder that will match somebody with somebody and sintered carbide ball are put into wet, 48h in ball mill, and wherein ratio of grinding media to material is 5:
1, ball-milling medium is absolute ethyl alcohol, and powder is 1 with the mass ratio of absolute ethyl alcohol:1, drum's speed of rotation is 250rad/min；
(3) dry：Dried being put into drying box through the compound of ball milling, 2h is incubated at 80 DEG C；
(4) suppress：Dry powder is obtained the rectangle pressed compact of 7mm × 7mm × 30mm using room temperature compression molding, wherein pressing
Power is 350MPa；
(5) vacuum-sintering：Cermet is prepared using the method for vacuum-sintering, at 1200 DEG C, soaking time is sintering temperature
40min；
(6) shaping is ground：By cermet obtained above polishing, surface defect that may be present is removed, fine grinding shaping is obtained
Mo2FeB2Based ceramic metal product.
The consistency for using drainage to determine cermet is 7.9 g/cm3；Cermet is determined using universal testing machine
Bending strength be 1600 MPa；The hardness for using Rockwell hardness instrument to determine cermet is HRA 89.
Performance comparision of this patent molybdenum-iron powder of table 1 to cermet
As shown in Table 1, the cermet that Mo powder makes is substituted by molybdenum-iron powder completely, by the cooperation of raw material and technique, makes it
The consistency of cermet, bending strength, hardness reach at or above cermet in the prior art with Mo powder as raw material, it was demonstrated that
The technical scheme of the application has reached substitution Mo powder, the work of reduces cost completely on the basis of the performance for ensureing cermet
With.
Above content is in conjunction with specific embodiments to further description of the invention, it is impossible to assert tool of the invention
Body implementation method is only limitted to this, for the professional and technical personnel of the technical field of the invention, is not departing from structure of the present invention
On the premise of think of, some simple replacements can also be made, should all be considered as belonging to scope of patent protection of the invention.
Claims (7)
1. a kind of inexpensive Mo2FeB2The preparation method of based ceramic metal, it is characterised in that：Concretely comprise the following steps：
1）Dispensing：Reaction powder is weighed, the reaction powder is included with molybdenum-iron powder, ferro-boron powder, carbonyl iron, Cr, Ni, C；
2）Batch mixing ball milling：Reaction raw materials will be weighed and be put into wet-milling in ball mill with sintered carbide ball；
3）Dry：Will be through step 2）The compound of ball milling is dried in being put into drying box；
4）Compacting：Dry powder is used into rectangle pressed compact obtained in room temperature compression molding；
5）Vacuum-sintering：Cermet is prepared using the method for vacuum-sintering；
6）Grinding shaping：By step 5）Obtained cermet polishing, fine grinding shaping is obtained Mo2FeB2Based ceramic metal product.
2. method according to claim 1, it is characterised in that the step 1）Reaction powder is included according to following quality
The component of percentage：62.5% ~ 69.5% molybdenum-iron powder, 25% ~ 26% ferro-boron powder, 0 ~ 3.5% vanadium iron powder, 0 ~ 7% carbonyl iron,
0 ~ 2.1% Cr, 0 ~ 2.5% Ni, 0 ~ 0.2% C.
3. method according to claim 1, it is characterised in that：The step 2）Wet-milling condition is：The wet-milling time be 36 ~
50h, ratio of grinding media to material is 4:1~7:1, ball-milling medium is absolute ethyl alcohol, and powder is 1 with the mass ratio of absolute ethyl alcohol:1~1:1.5, ball milling
Machine rotating speed is 200 rad/min ~ 300 rad/min.
4. method according to claim 1, it is characterised in that：The step 3）Drying condition is in 80 DEG C ~ 100 DEG C insulations
1.5h~2.5h。
5. method according to claim 1, it is characterised in that：The step 3）Dried powder is with being not less than 40 purposes
Sub-sieve sieving carries out step 4 again）Pressing operation.
6. method according to claim 1, it is characterised in that：The step 4）The pressure of compacting is 300MPa ~ 450Mpa.
7. method according to claim 1, it is characterised in that：The step 5）Sintering temperature is protected at 1100 DEG C ~ 1250 DEG C
The warm time is 0 ~ 60min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041321A (en) * | 2019-12-24 | 2020-04-21 | 浙江恒大数控装备有限公司 | Metal ceramic for machine tool guide rail and preparation process thereof |
| CN111979464A (en) * | 2020-08-28 | 2020-11-24 | 南京航空航天大学 | Mo with dual-scale dual-form hard phase crystal grains2FeB2Base cermet and method for preparing same |
| CN112458350A (en) * | 2020-11-13 | 2021-03-09 | 湖南工业大学 | Mo2FeB2 cermet material and preparation method thereof |
| CN114318038A (en) * | 2021-12-01 | 2022-04-12 | 三峡大学 | Boride modified Mo2FeB2Base cermet and method for preparing same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4193958B2 (en) * | 2000-04-26 | 2008-12-10 | 東洋鋼鈑株式会社 | Molten metal member having excellent corrosion resistance against molten metal and method for producing the same |
| CN102618769A (en) * | 2012-04-05 | 2012-08-01 | 北京科技大学 | Manufacturing method of Mo2FeB2 based steel bonded hard alloy |
| CN102773991A (en) * | 2012-06-21 | 2012-11-14 | 浙江华业塑料机械有限公司 | Metallic screw and manufacturing method for same |
| WO2013027523A1 (en) * | 2011-08-19 | 2013-02-28 | 東洋鋼鈑株式会社 | Welding rod and manufacturing method therefor |
| WO2013054752A1 (en) * | 2011-10-11 | 2013-04-18 | 東洋鋼鈑株式会社 | Member having a sliding part |
| CN104451325A (en) * | 2014-12-12 | 2015-03-25 | 西安交通大学 | Process for preparing Mo2FeB2-based metal ceramic |
| CN104694807A (en) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | Ternary boride metal ceramic preparation process |
-
2017
- 2017-02-22 CN CN201710097111.2A patent/CN106916986B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4193958B2 (en) * | 2000-04-26 | 2008-12-10 | 東洋鋼鈑株式会社 | Molten metal member having excellent corrosion resistance against molten metal and method for producing the same |
| WO2013027523A1 (en) * | 2011-08-19 | 2013-02-28 | 東洋鋼鈑株式会社 | Welding rod and manufacturing method therefor |
| WO2013054752A1 (en) * | 2011-10-11 | 2013-04-18 | 東洋鋼鈑株式会社 | Member having a sliding part |
| CN102618769A (en) * | 2012-04-05 | 2012-08-01 | 北京科技大学 | Manufacturing method of Mo2FeB2 based steel bonded hard alloy |
| CN102773991A (en) * | 2012-06-21 | 2012-11-14 | 浙江华业塑料机械有限公司 | Metallic screw and manufacturing method for same |
| CN104694807A (en) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | Ternary boride metal ceramic preparation process |
| CN104451325A (en) * | 2014-12-12 | 2015-03-25 | 西安交通大学 | Process for preparing Mo2FeB2-based metal ceramic |
Non-Patent Citations (4)
| Title |
|---|
| FENGHAOYANG等: "Microstructure, mechanical and tribological properties of Mo2FeB2 based cermets with Mn addition", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| HAIZHOU YU等: "Synthesis and microstructure evolution during vacuum sintering of Mo2FeB2 based cermets", 《INT. JOURNAL OF REFRACTORY METALS AND HARD MATERIALS》 * |
| 王杰等: "Mo_2FeB_2粉体的制备研究及铁源对其微观结构的影响", 《功能材料》 * |
| 胡兵: "烧结工艺与合金组分对Mo_2FeB_2金属陶瓷组织及性能的影响", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041321A (en) * | 2019-12-24 | 2020-04-21 | 浙江恒大数控装备有限公司 | Metal ceramic for machine tool guide rail and preparation process thereof |
| CN111979464A (en) * | 2020-08-28 | 2020-11-24 | 南京航空航天大学 | Mo with dual-scale dual-form hard phase crystal grains2FeB2Base cermet and method for preparing same |
| CN111979464B (en) * | 2020-08-28 | 2021-11-05 | 南京航空航天大学 | Mo with dual-scale dual-form hard phase crystal grains2FeB2Base cermet and method for preparing same |
| CN112458350A (en) * | 2020-11-13 | 2021-03-09 | 湖南工业大学 | Mo2FeB2 cermet material and preparation method thereof |
| CN114318038A (en) * | 2021-12-01 | 2022-04-12 | 三峡大学 | Boride modified Mo2FeB2Base cermet and method for preparing same |
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| CN106916986B (en) | 2018-05-08 |
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