CN109868382A - A kind of rare-earth element modified Mo2FeB2Based ceramic metal and preparation method thereof - Google Patents
A kind of rare-earth element modified Mo2FeB2Based ceramic metal and preparation method thereof Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 75
- 239000002184 metal Substances 0.000 title claims abstract description 75
- 239000000919 ceramic Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 41
- 238000006263 metalation reaction Methods 0.000 title abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 80
- 238000005245 sintering Methods 0.000 claims abstract description 68
- 238000001035 drying Methods 0.000 claims abstract description 65
- 238000000498 ball milling Methods 0.000 claims abstract description 43
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 11
- 239000007791 liquid phase Substances 0.000 claims abstract description 8
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- 238000001238 wet grinding Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 14
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000013001 point bending Methods 0.000 claims description 12
- 229910052746 lanthanum Inorganic materials 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 229910052727 yttrium Inorganic materials 0.000 claims description 10
- 239000011812 mixed powder Substances 0.000 claims description 9
- 238000003701 mechanical milling Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000012071 phase Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910052729 chemical element Inorganic materials 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000000748 compression moulding Methods 0.000 description 15
- 239000011195 cermet Substances 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000010439 graphite Substances 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 11
- 238000004886 process control Methods 0.000 description 10
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- 238000007873 sieving Methods 0.000 description 3
- 229960004756 ethanol Drugs 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The invention discloses a kind of rare-earth element modified Mo2FeB2Based ceramic metal and preparation method thereof, purity is not less than to 99.0% Mo, FeB, Fe and rare earth powder mixing, dehydrated alcohol is added and carries out ball milling, then the slurry after ball milling is subjected to drying and processing and be sieved, then be pressed and molded, obtain the rare earth modified Mo of 87.7~89.1HRA of hardness through vacuum liquid-phase sintering and furnace cooling2FeB2Based ceramic metal.A possibility that composition of the present invention is simple, does not include other chemical elements, reduces production cost and bring impurity into, simple process and low cost.And crystal boundary has been purified by adding rare earth element, the crystallite dimension of hard phase is refined, the Mo being prepared2FeB2Based ceramic metal can be used for wearing, burn into corrosive wear reciprocation operating condition.
Description
Technical field
The invention belongs to cermet and preparation technical fields, and in particular to a kind of rare-earth element modified Mo2FeB2Base Metal
Ceramics and preparation method thereof.
Background technique
Wear-resistant material has extremely wide application in fields such as metal smelt, exploitations of mineral resources.In the past few decades,
Huge variation has occurred in such Material Field.Abrasion resistance material and its preparation process gradually substitute traditional material and its preparation
Technique has bright application prospect.Ternary Boride Base Cermets, such as Mo2FeB2Based ceramic metal has raw material letter
Singly, the features such as manufacturing cost is cheap, sintering character is good, comprehensive mechanics and physical and chemical performance are excellent, thus receive significant attention.
Mo2FeB2Based ceramic metal is due to intensity is high, hardness is high, wear-resistant, corrosion-resistant and with steel bond strength
High excellent feature is the ideal material for preparing tool and mould and wearing piece, is widely used as the hot extrusion of cutting tool, copper
Grinding tool and wire drawing die.
It is existing using discharge plasma sintering (SPS) although the cermet of preparation has consistency high, high rigidity and resistance to
The good advantage of mill property, but the method for using SPS can greatly improve cost, be unfavorable for industrial application and popularization, in addition,
It is excessive in raw material to joined other alloying elements, it also will increase cost and a possibility that impurity is brought in increase into.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of rare earth element
Modified Mo2FeB2Based ceramic metal and preparation method thereof does not include other chemical elements, reduces production cost and brings impurity into
A possibility that, simple process and low cost.
The invention adopts the following technical scheme:
A kind of rare-earth element modified Mo2FeB2Purity is not less than 99.0% Mo, FeB by based ceramic metal preparation method,
Fe and rare earth powder mixing, by weight percentage: Mo be 45.0~51.0%, FeB be 26.0~33.0%, Fe be 16.0~
28.5%, rare earth powder is La or Y, and dehydrated alcohol is added and carries out ball milling, the slurry after ball milling is then carried out drying and processing simultaneously
Sieving, then be pressed and molded, the rare earth element for obtaining 87.3~89.1HRA of hardness through vacuum liquid-phase sintering and furnace cooling changes
Property Mo2FeB2Based ceramic metal.
Specifically, by weight percentage: 0~1.0%, the La that Y accounts for Mo, FeB and Fe mixed-powder accounts for Mo, FeB and Fe
The 0~1.0% of mixed-powder.
Further, ball milling uses wet-milling mode, the additional amount of dehydrated alcohol be mixed-powder mass percent 40~
160%.
Specifically, the ratio of grinding media to material in ball-milling treatment is (1~11): 1, use in mechanical milling process argon gas as protective atmosphere,
The revolving speed of ball mill is 140~360r/min, and Ball-milling Time is 3~37 hours.
It is dried specifically, the slurry after ball milling is poured into eggplant-shape bottle, the rotation speed of eggplant-shape bottle is 45~165r/
Min, the vacuum degree 10 in Rotary Evaporators-2~100MPa。
Further, the temperature of drying and processing is 30~110 DEG C, and the time is 1~5 hour.
Specifically, the briquetting pressure of compression molding is 90~510MPa, the dwell time is 50~310s.
Specifically, the heating rate of vacuum liquid-phase sintering is 2~11 DEG C/min, sintering temperature is 900~1600 DEG C, heat preservation
Time is 0~50min, and vacuum degree is 10 in sintering process-3~10-1Pa。
Another technical solution of the invention is a kind of rare-earth element modified Mo2FeB2The preparation of based ceramic metal preparation method
Rare-earth element modified Mo2FeB2Based ceramic metal.
Specifically, rare-earth element modified Mo2FeB2The three-point bending strength of based ceramic metal is 1305.6~1540.7Mpa,
Consistency is 97.42~98.91%.
Compared with prior art, the present invention at least has the advantages that
The present invention prepares Mo2FeB2Raw material used in based ceramic metal is simple, in addition to required Mo, Fe and B element, only adds
Rare earth element, save the cost are added；Using " the rare earth effect " of rare earth element, the performance of cermet is improved.It prepares
Mo2FeB2Based ceramic metal maximum hardness is up to 89.1HRA, and highest three-point bending strength is up to 1540.7MPa.
Further, weight percentages of components are as follows: Mo:45.0~51.0%, FeB:26.0~33.0%, Fe:16.0~
28.5%, Y:0~1.0%, La are 0~1.0%.It can be by the fixing fabric structure of hard phase the 60% of entire cermet volume
~80%, obtained cermet comprehensive mechanical property is excellent.
Further, 40~160% dehydrated alcohol for accounting for mixed powder quality is added in mechanical milling process as control
Agent can mitigate the oxidation of powder, be uniformly mixed powder, improve grinding efficiency.
Further, it uses argon gas as protective atmosphere in mechanical milling process, effectively powder can be avoided to be oxidized.
Further, mixed-powder can be effectively dried using Rotary Evaporators, shortens the preparation week of cermet
Phase.
Further, parameters selection briquetting pressure is 90~510MPa in compression molding, and the dwell time is 50~310s.Both
It can guarantee the intensity of green body, big stress even crackle can also be avoided the occurrence of, be ready for follow-up sintering.
Further, sintering method uses vacuum liquid-phase sintering, and technical process is simple, low in cost, is suitble to industrial application
And popularization.
The Mo that the present invention is prepared2FeB2Based ceramic metal consistency is high, hardness is high and wearability is good, can be used for wearing,
Burn into corrosive wear reciprocation operating condition.
In conclusion composition of the present invention is simple, do not include other chemical elements, reduces production cost and bring impurity into
Possibility, simple process and low cost.And crystal boundary has been purified by adding rare earth element, refine the crystal grain ruler of hard phase
Mo that is very little, being prepared2FeB2Based ceramic metal can be used for wearing, burn into corrosive wear reciprocation operating condition.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the modified Mo2FeB2 based ceramic metal microstructure SEM photograph of Rare Earth Y prepared by the present invention；
Fig. 2 is the modified Mo2FeB2 based ceramic metal microstructure SEM photograph of rare earth La prepared by the present invention.
Specific embodiment
The present invention provides a kind of rare-earth element modified Mo2FeB2Based ceramic metal and preparation method thereof, it is rare-earth element modified
Mo2FeB2Based ceramic metal includes hard phase and Binder Phase, and raw material is powder, weight percentages of components are as follows: and Mo:45.0~
51.0%, FeB:26.0~33.0%, Fe:16.0~28.5%, Y:0~1.0%, La:0~1.0%.In ball mill after weighing
Middle carry out wet-milling, then green body is made through drying, compression molding in powder, and finally green body is placed in graphite in vacuum sintering furnace
Middle carry out vacuum liquid-phase sintering, furnace cooling obtains rare-earth element modified Mo after sintering2FeB2Based ceramic metal.
A kind of rare-earth element modified Mo of the present invention2FeB2Based ceramic metal preparation method, by raw material through mixing, wet-milling, dry
Dry, compression molding, vacuum liquid-phase sintering prepare to be formed, comprising the following steps:
S1, mixing
Purity is selected to be not less than 99.0% Mo, FeB, Fe and rare earth powder, rare earth powder is La or Y, by weight percentage
Than are as follows: Mo:45.0~51.0%, FeB:26.0~33.0%, Fe:16.0~28.5%, Y:0~1.0%, La:0~1.0%.
Powder is configured, powder is mixed；
S2, ball milling
Powder upon mixing is put into ball grinder, is added and is accounted for the dehydrated alcohol that its mass percent is 40%~160%
As process control agent, ratio of grinding media to material is 1~11:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, drum's speed of rotation
For 140~360r/min, Ball-milling Time is 3~37 hours；
S3, drying
Slurry after ball milling is poured into eggplant-shape bottle and is dried, drying temperature is 30~110 DEG C, the rotation speed of eggplant-shape bottle
Degree is 45~165r/min, and drying time is 1~5 hour, the vacuum degree 10 in Rotary Evaporators-2~100MPa, after drying
Powder is sieved with 200 mesh screens；
S4, compression molding
Powder after drying is fitted into metal die and is pressed and molded, briquetting pressure is 90~510MPa, when pressure maintaining
Between be 50~310s；
S5, sintering
Green body after compression molding is put into vacuum sintering furnace in graphite and carries out high temperature sintering, heating rate is
2~11 DEG C/min, sintering temperature is 900 DEG C~1600 DEG C, and soaking time is 0~50min, and vacuum degree is 10 in sintering process-3
~10-1Pa, furnace cooling obtain rare earth modified Mo2FeB2Based ceramic metal.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
The component for applying example can be arranged and be designed by a variety of different configurations.Therefore, below to the present invention provided in the accompanying drawings
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of of the invention selected
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of element modified Mo2FeB2 based ceramic metal preparation method of Rare Earth Y sequentially includes mixing, wet-milling, drying, mould
Molded, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, by weight percentage are as follows: Mo:
45.0%, FeB:26.0%, Fe:28.5% do not add Y powder or La powder.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, be added account for its mass percent be 40% it is anhydrous
For ethyl alcohol as process control agent, ratio of grinding media to material is 1:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, drum's speed of rotation
For 140r/min, Ball-milling Time is 3 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 30 DEG C, eggplant-shape bottle
Rotation speed be 45r/min, drying time be 1 hour, the vacuum degree 10 in Rotary Evaporators-2MPa, the powder after drying are used
The sieving of 200 mesh screens；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
90MPa, dwell time 50s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 2 DEG C/min, and sintering temperature is 900 DEG C, is not kept the temperature, and vacuum degree is 10 in sintering process-3Pa, furnace cooling
Obtain Mo2FeB2Based ceramic metal.
Mo in the present invention2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance are as follows:
Consistency is 98.16%, hardness 87.6HRA, three-point bending strength 1335.8MPa.
Embodiment 2
A kind of element modified Mo of Rare Earth Y2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, molding
Molding, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, Y powder, by weight percentage are as follows: Mo:
46.0%, FeB:27.0%, Fe:26.3%, Y:0.2%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, be added account for its mass percent be 70% it is anhydrous
For ethyl alcohol as process control agent, ratio of grinding media to material is 3:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, drum's speed of rotation
For 200r/min, Ball-milling Time is 11 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 50 DEG C, eggplant-shape bottle
Rotation speed be 75r/min, drying time be 2.0 hours, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying
It is sieved with 200 mesh screens；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
195MPa, dwell time 115s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 4 DEG C/min, and sintering temperature is 1050 DEG C, soaking time 10min, and vacuum degree is 10 in sintering process- 2Pa, furnace cooling obtain the element modified Mo of Rare Earth Y2FeB2Based ceramic metal.
Mo in the present invention2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance are as follows:
Consistency is 98.45%, hardness 88.4HRA, three-point bending strength 1450.3MPa.
Embodiment 3
A kind of element modified Mo of Rare Earth Y2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, molding
Molding, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, Y powder, by weight percentage are as follows: Mo:
47.5%, FeB:28%, Fe:24.6%, Y:0.4%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 100%
For water-ethanol as process control agent, ratio of grinding media to material is 5:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 200r/min, and Ball-milling Time is 19 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 70 DEG C, eggplant-shape bottle
Rotation speed be 105r/min, drying time be 3.0 hours, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying
It is sieved with 200 mesh screens at end；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
300MPa, dwell time 180s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 6 DEG C/min, and sintering temperature is 1200 DEG C, soaking time 20min, and vacuum degree is 10- in sintering process
2Pa, furnace cooling obtain the element modified Mo of Rare Earth Y2FeB2Based ceramic metal.
Referring to Fig. 1, the Mo in the present invention2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained metal
Ceramic performance are as follows: consistency 98.91%, hardness 89.1HRA, three-point bending strength 1540.7MPa.
Embodiment 4
A kind of element modified Mo of Rare Earth Y2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, molding
Molding, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, Y powder, by weight percentage are as follows: Mo:
49.0%, FeB:30.0%, Fe:20.2%, Y:0.8%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 130%
For water-ethanol as process control agent, ratio of grinding media to material is 8:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 310r/min, and Ball-milling Time is 27 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 90 DEG C, eggplant-shape bottle
Rotation speed be 135r/min, drying time be 4.0 hours, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying
It is sieved with 200 mesh screens at end；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
405MPa, dwell time 245s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 8 DEG C/min, and sintering temperature is 1400 DEG C, soaking time 350min, and vacuum degree is 10- in sintering process
2Pa, furnace cooling obtain the element modified Mo of Rare Earth Y2FeB2Based ceramic metal.
Mo in the present invention2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance are as follows:
Consistency is 98.23%, hardness 88.1HRA, three-point bending strength 1424.3MPa.
Embodiment 5
A kind of element modified Mo of Rare Earth Y2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, molding
Molding, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, Y powder, by weight percentage are as follows: Mo:
51.0%, FeB:32.5%, Fe:16.0%, Y:1.0%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 160%
For water-ethanol as process control agent, ratio of grinding media to material is 11:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 360r/min, and Ball-milling Time is 37 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 110 DEG C, eggplant-shape bottle
Rotation speed be 165r/min, drying time be 5.0 hours, the vacuum degree 100MPa in Rotary Evaporators, the powder after drying
It is sieved with 200 mesh screens at end；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
510MPa, dwell time 310s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 11 DEG C/min, and sintering temperature is 1600 DEG C, soaking time 50min, and vacuum degree is 10 in sintering process- 1Pa, furnace cooling obtain the element modified Mo of Rare Earth Y2FeB2Based ceramic metal.
Mo in the present invention2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance are as follows:
Consistency is 97.52%, hardness 87.3HRA, three-point bending strength 1305.6MPa.
Embodiment 6
A kind of modified Mo of earth La2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, mould
Molded, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, La powder, by weight percentage are as follows: Mo:
47.5%, FeB:30%, Fe:23.0%, La:0.2%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 100%
For water-ethanol as process control agent, ratio of grinding media to material is 6:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 250r/min, and Ball-milling Time is 20 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 60 DEG C, eggplant-shape bottle
Rotation speed be 100r/min, drying time be 2.5 hours, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying
It is sieved with 200 mesh screens at end；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
300MPa, dwell time 180s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 6 DEG C/min, and sintering temperature is 1300 DEG C, soaking time 40min, and vacuum degree is 10 in sintering process- 2Pa, furnace cooling obtain the modified Mo of earth La2FeB2Based ceramic metal.
Mo in the present embodiment2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance
Are as follows: consistency 98.48%, hardness 88.3HRA, three-point bending strength 1423.6MPa.
Embodiment 7
A kind of modified Mo of earth La2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, mould
Molded, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, La powder, by weight percentage are as follows: Mo:
46.5%, FeB:28.5%, Fe:21.5%, La:0.4%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 100%
For water-ethanol as process control agent, ratio of grinding media to material is 4:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 200r/min, and Ball-milling Time is 12 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 50 DEG C, eggplant-shape bottle
Rotation speed be 80r/min, drying time be 1 hour, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying are used
The sieving of 200 mesh screens；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
200MPa, dwell time 120s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 4 DEG C/min, and sintering temperature is 1150 DEG C, soaking time 20min, and vacuum degree is 10 in sintering process- 2Pa, furnace cooling obtain the modified Mo of earth La2FeB2Based ceramic metal.
Referring to Fig. 2, the Mo in the present embodiment2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained gold
Belong to ceramic performance are as follows: consistency 98.89%, hardness 89.0HRA, three-point bending strength 1510.5MPa.
Embodiment 8
A kind of modified Mo of earth La2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, mould
Molded, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, La powder, by weight percentage are as follows: Mo:
48.5%, FeB:32%, Fe:24.0%, La:0.6%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 100%
For water-ethanol as process control agent, ratio of grinding media to material is 8:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 300r/min, and Ball-milling Time is 28 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 80 DEG C, eggplant-shape bottle
Rotation speed be 140r/min, drying time be 3 hours, the vacuum degree 10 in Rotary Evaporators-1MPa, the powder after drying
It is sieved with 200 mesh screens；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
400MPa, dwell time 240s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 8 DEG C/min, and sintering temperature is 1450 DEG C, soaking time 50min, and vacuum degree is 10 in sintering process- 2Pa, furnace cooling obtain the modified Mo of earth La2FeB2Based ceramic metal.
Mo in the present embodiment2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance
Are as follows: consistency 98.22%, hardness 88.6HRA, three-point bending strength 1456.2MPa.
Embodiment 9
A kind of modified Mo of earth La2FeB2Based ceramic metal preparation method sequentially includes mixing, wet-milling, drying, mould
Molded, vacuum-sintering step:
(1) mixing step: select purity be not less than 99.0% Mo, FeB, Fe powder, La powder, by weight percentage are as follows: Mo:
51.0%, FeB:33.0%, Fe:25.0%, La:1.0%.Powder is configured, powder is mixed；
(2) ball milling step: powder upon mixing is put into ball grinder, is added and is accounted for the nothing that its mass percent is 150%
For water-ethanol as process control agent, ratio of grinding media to material is 10:1, and argon gas is filled after vacuumizing in ball grinder and carries out wet-milling, ball mill turns
Speed is 360r/min, and Ball-milling Time is 37 hours；
(3) drying steps: the slurry after ball milling being poured into eggplant-shape bottle and is dried, and drying temperature is 110 DEG C, eggplant-shape bottle
Rotation speed be 165r/min, drying time be 5 hours, the vacuum degree 10 in Rotary Evaporators-0MPa, the powder after drying
It is sieved with 200 mesh screens；
(4) it is pressed and molded step: the powder after drying being fitted into metal die and is pressed and molded, briquetting pressure is
510MPa, dwell time 310s；
(5) green body after compression molding sintering step: is put into progress high temperature burning in vacuum sintering furnace in graphite
Knot, heating rate are 11 DEG C/min, and sintering temperature is 1600 DEG C, soaking time 50min, and vacuum degree is 10 in sintering process- 1Pa, furnace cooling obtain the modified Mo of earth La2FeB2Based ceramic metal.
Mo in the present embodiment2FeB2Based ceramic metal preparation method is simple, low in cost.Obtained cermet performance
Are as follows: consistency 97.42%, hardness 88.0HRA, three-point bending strength 1312.3MPa.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of rare-earth element modified Mo2FeB2Based ceramic metal preparation method, which is characterized in that purity is not less than 99.0%
Mo, FeB, Fe and rare earth powder mixing, by weight percentage: Mo is that 45.0~51.0%, FeB is 26.0~33.0%,
Fe is 16.0~28.5%, and rare earth powder is La or Y, and dehydrated alcohol is added and carries out ball milling, then carries out the slurry after ball milling
Drying and processing is simultaneously sieved, then is pressed and molded, and obtains 87.3~89.1HRA's of hardness through vacuum liquid-phase sintering and furnace cooling
Rare-earth element modified Mo2FeB2Based ceramic metal.
2. rare-earth element modified Mo according to claim 12FeB2Based ceramic metal preparation method, which is characterized in that by weight
Measure percentages: 0~1.0%, the La that Y accounts for Mo, FeB and Fe mixed-powder accounts for the 0~1.0% of Mo, FeB and Fe mixed-powder.
3. rare-earth element modified Mo according to claim 1 or 22FeB2Based ceramic metal preparation method, which is characterized in that
Ball milling uses wet-milling mode, and the additional amount of dehydrated alcohol is the 40~160% of mixed-powder mass percent.
4. rare-earth element modified Mo according to claim 12FeB2Based ceramic metal preparation method, which is characterized in that ball milling
Ratio of grinding media to material in processing is (1~11): 1, use in mechanical milling process argon gas as protective atmosphere, and the revolving speed of ball mill is 140~
360r/min, Ball-milling Time are 3~37 hours.
5. rare-earth element modified Mo according to claim 12FeB2Based ceramic metal preparation method, which is characterized in that by ball
Slurry after mill, which pours into eggplant-shape bottle, is dried, and the rotation speed of eggplant-shape bottle is 45~165r/min, in Rotary Evaporators
Vacuum degree 10-2~100MPa.
6. rare-earth element modified Mo according to claim 52FeB2Based ceramic metal preparation method, which is characterized in that drying
The temperature of processing is 30~110 DEG C, and the time is 1~5 hour.
7. rare-earth element modified Mo according to claim 12FeB2Based ceramic metal preparation method, which is characterized in that molding
Molding briquetting pressure is 90~510MPa, and the dwell time is 50~310s.
8. rare-earth element modified Mo according to claim 12FeB2Based ceramic metal preparation method, which is characterized in that vacuum
The heating rate of liquid-phase sintering is 2~11 DEG C/min, and sintering temperature is 900~1600 DEG C, and soaking time is 0~50min, sintering
Vacuum degree is 10 in the process-3~10-1Pa。
9. a kind of according to claim 1 to rare-earth element modified Mo prepared by any one of 8 the methods2FeB2Based ceramic metal.
10. rare-earth element modified Mo according to claim 92FeB2Based ceramic metal, which is characterized in that rare earth element changes
Property Mo2FeB2The three-point bending strength of based ceramic metal is 1305.6~1540.7Mpa, and consistency is 97.42~98.91%.
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| CN111116208A (en) * | 2020-01-02 | 2020-05-08 | 西安交通大学 | Yttrium modified Mo2NiB2Base cermet and method for preparing same |
| CN111139390A (en) * | 2020-01-02 | 2020-05-12 | 西安交通大学 | Chromium-doped modified Mo2NiB2Base cermet and method for preparing same |
| CN113215471A (en) * | 2021-05-08 | 2021-08-06 | 武汉科技大学 | Wear-resistant corrosion-resistant ternary boride/stainless steel composite 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 |
| CN115652127A (en) * | 2022-11-01 | 2023-01-31 | 西安近代化学研究所 | Near-equiaxial crystal grain Mo 2 FeB 2 Preparation method of base cermet |
| CN115652127B (en) * | 2022-11-01 | 2023-09-08 | 西安近代化学研究所 | Nearly equiaxial grain Mo 2 FeB 2 Preparation method of base metal ceramic |
| CN115786758A (en) * | 2022-11-25 | 2023-03-14 | 西安近代化学研究所 | Mo 2 FeB 2 Preparation method of-TiN-based composite material |
| CN115786758B (en) * | 2022-11-25 | 2024-05-10 | 西安近代化学研究所 | Mo (molybdenum)2FeB2Preparation method of-TiN-based composite material |
| CN116477946A (en) * | 2023-05-05 | 2023-07-25 | 湖南泰鑫瓷业有限公司 | Ceramic cutter and preparation method and application thereof |
| CN116477946B (en) * | 2023-05-05 | 2024-03-08 | 湖南泰鑫瓷业有限公司 | Ceramic cutter and preparation method and application thereof |
| CN116621586A (en) * | 2023-05-29 | 2023-08-22 | 西安热工研究院有限公司 | WNiB ceramic and preparation method thereof |
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