CN104313378A - Multicomponent hard phase reinforced Mo2FeB2 metal ceramic material and preparation method thereof - Google Patents
Multicomponent hard phase reinforced Mo2FeB2 metal ceramic material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a multicomponent hard phase reinforced Mo2FeB2 metal ceramic material. The material comprises by weight 45-50% of Mo powder, 28-32% of FeB powder, 7-12% of Fe powder, 0-3% of Cr powder, 1-3% of Ni powder, 0.5-1% of C powder, 0.2-0.6% of CeO powder or La2O3 powder, 8-12% of WC powder, 0.5-5% of NbC powder, 0-5% of VC powder and 0.5-5% of TiC powder. The material of the invention has the characteristics of low raw material cost, low sintering temperature, fine microstructure, hardness up to HRA88-HRA93, anti incision type wear performance comparable to that of the WC-Co hard alloy, and greatly reduced preparation cost and the use cost, etc.
Description
Technical field
The present invention relates to a kind of multicomponent hard and strengthen Mo mutually
2feB
2cermet material and preparation method thereof, belongs to the high abrasion resisting material of metal material engineering technical field, is specially adapted to brick-making mould and ceramic die.
Background technology
WC-Co series hard metal is with the tungsten carbide wc of 85Wt% ~ 95Wt% for hard phase, and about 15Wt% ~ 5Wt%Co is sintered bond phase, and usually form through 1390 DEG C ~ 1450 DEG C vacuum sinterings, normal temperature lower density is at 14 ~ 15g/cm
3, hardness is at 85HRA ~ 93HRA.Current is that the face panel of the senior brick-making mould liner plate of raw material mainly adopts WC-Co series hard metal with river sand, and usual work-ing life can reach more than 100 ten thousand times.But because WC-Co series hard metal contains the precious metals such as Co and a large amount of WC, sintering temperature is high, and extrudate density is high, and the rate of utilization of unit mass material is low, thus production cost and application cost high.And existing Mo
2feB
2ternary Boride Base Cermets, main with the molybdenum Mo powder of certain content, ferro-boron FeB powder, iron Fe powder for raw material, through wet ball grinding, add forming agent and mix, after dry, room temperature compression moulding, formed by 1180 DEG C ~ 1300 DEG C vacuum high-temperature reaction sintering technology, wherein Mo
2feB
2for hard phase, Fe base is bonding phase.Although its hardness can reach HRA81 ~ HRA88, be used as the face panel of brick-making mould liner plate, in taking river sand as raw material and more than 1000 tons hydraulic brick making machines, suppress fragment of brick, its wear resistance is still not as good as WC-Co series hard metal material.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art and provides a kind of multicomponent hard to strengthen Mo mutually
2feB
2cermet material and preparation method thereof, raw materials cost is low, hardness is high, anti-cut-in type polishing machine excellent.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is:
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, it is by Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder or La
2o
3the compound sintering of powder, WC powder, NbC powder, VC powder and TiC powder obtains, and the weight percent of each raw material is Mo powder 45 ~ 50%, ferro-boron FeB powder 28 ~ 32%, Fe powder 7 ~ 12%, Cr powder 0 ~ 3%, Ni powder 1 ~ 3%, C powder 0.5 ~ 1%, CeO powder or La
2o
3powder 0.2 ~ 0.6%, WC powder 8 ~ 12%, NbC powder 0.5 ~ 5%, VC powder 0 ~ 5%, TiC powder 0.5 ~ 5%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, each raw material Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder or La is taken
2o
3powder, WC powder, NbC powder, VC powder, TiC powder, by each raw material through ball mill wet-milling and drying obtains mixed powder;
2) described mixed powder and forming agent are mixed, drying, sieve, room temperature compression moulding, then vacuum sintering or pressure sintering is carried out, controlling temperature rise rate is 6 DEG C ± 4 DEG C, sintering temperature is 1160 ~ 1300 DEG C, soaking time is 20 ~ 120 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material.
By such scheme, described step 1) in ball mill wet-milling dry concrete grammar be: be (4 ~ 5) in the ratio of abrading-ball and described raw material gross weight: 1 by both mixing, and add dehydrated alcohol by 40 ~ 80% of described raw material gross weight and carry out ball milling 5 ~ 80 hours, slough dehydrated alcohol through vacuumizing, then room temperature is dried or 30 ~ 80 DEG C of oven dry.
By such scheme, described step 2) in the ratio of mixed powder and forming agent add 50 ~ 100ml forming agent according to every kilogram of mixed powder.
By such scheme, described step 2) in the method for mixing be ball milling 1 ~ 5 hour.
By such scheme, described step 2) in the temperature of drying be 50 ~ 80 DEG C, the granularity requirements of sieving is 80 ~ 200 orders.
By such scheme, described step 2) in the vacuum tightness of vacuum sintering be 1.0Pa ~ 1.0 × 10
-3pa.
By such scheme, described step 2) in the pressure of pressure sintering be 1 ~ 5MPa, method for pass into argon gas or rare gas element in vacuum oven.
By such scheme, described Mo powder purity is not less than 99.6%, and ferro-boron FeB powder is reduced iron powder or electrolytic iron powder containing B mass percent 16% ~ 21%, Fe powder, and the purity that purity is not less than 98.5%, Cr powder and Ni powder is not less than 99.5%, C powder, CeO powder and La
2o
3powder purity is not less than 99.9%; Described Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder and La
2o
3the granularity of powder is 200 order ~ 400 orders.
By such scheme, described multicomponent hard is WC powder, NbC powder, VC powder and TiC powder mutually, and its purity is not less than 99.5%, granularity is 200 order ~ 400 orders.
By such scheme, described forming agent is SD series, is selected from one or more mixtures in any proportion in SD-A, SD-B, SD-C, SD-E, SD-D, SD-F, SD-2X.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention takes full advantage of WC (wolfram varbide), NbC (niobium carbide), VC (vanadium carbide), TiC (titanium carbide) have high fusing point, high hardness, high thermostability, and the performance that the density of NbC, VC, TiC is all low than steel, make its each leisure participate in pyroreaction boronation sintering and generate Mo
2feB
2in the Ternary Boride Base Cermets process of hard phase and the bonding phase of Fe base, play the interactions such as the dispersion-strengthened of inhibiting grain growth, refiner material tissue and multicomponent hard phase, reach and significantly strengthen Mo
2feB
2the thermostability of sintering metal hardness and wear resistance and strongthener also reduces the effects such as density of material.
2, the multicomponent hard prepared by the present invention strengthens Mo mutually
2feB
2cermet material, hardness is up to HRA88 ~ HRA93, and the excellent high-abrasive material worn and torn as anti-cut-in type and WC-Co series hard metal compare favourably.Because multicomponent hard strengthens Mo mutually
2feB
2sintering metal is not containing precious metals such as Co, only containing a small amount of tungsten carbide wc, compared with WC-Co series hard metal, have raw materials cost and reduce more than 35%, sintering temperature significantly reduces, and sintered article deformation quantity reduces, energy consumption reduces, density of material reduces about 40%, improves the rate of utilization of unit mass material, significantly reduces the advantage such as production cost and use cost.
Multicomponent hard prepared by the present invention strengthens Mo mutually
2feB
2cermet material, substitutes the WC-Co series hard metal material of brick-making mould backing surface empiecement or tile mould panel, significantly reduces die production cost.The present invention at brick-making mould, tile mould, cold-work die, wire-drawing die, mine engineering instrument, Mining instrument driven by oil and high temperature material, corrosion resistant material etc. are with a wide range of applications.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but the present invention is not only confined to the following examples.
In following embodiment, described Mo powder purity is not less than 99.6%, and ferro-boron FeB powder is reduced iron powder or electrolytic iron powder containing B mass percent 16% ~ 21%, Fe powder, and the purity that purity is not less than 98.5%, Cr powder and Ni powder is not less than 99.5%, C powder, CeO powder and La
2o
3powder purity is not less than 99.9%; Described Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder and La
2o
3the granularity of powder is 200 order ~ 400 orders; Described multicomponent hard is WC powder, NbC powder, VC powder and TiC powder mutually, and its purity is not less than 99.5%, granularity is 200 order ~ 400 orders.
Embodiment 1
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, it is by Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder or La
2o
3powder, WC powder, NbC powder, VC powder and TiC powder mixing final vacuum sintering gained.The weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 28%, Fe powder 7%, Cr powder 2%, Ni powder 2%, C powder 0.5%, CeO powder 0.5%, WC powder 12%, NbC powder 1.5% and TiC powder 1.5%.Wherein, ferro-boron FeB powder is containing B mass percent 17%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, take each raw material Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder, WC powder, NbC powder, TiC powder, be that 4:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and add dehydrated alcohol by the 40wt% of raw material gross weight and carry out ball milling 15 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 70ml forming agent SD-A by every kilogram, ball milling 2 hours again, through 70 DEG C of oven dry, crosses 100 mesh sieves, room temperature compression moulding, then inserts sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 4 DEG C, and vacuum tightness is 1.0Pa ~ 1.0 × 10
-2pa, sintering temperature is 1160 DEG C, and soaking time is 120 minutes; Cool to less than 100 DEG C air coolings of coming out of the stove after having sintered with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually
2feB
2cermet material, its hardness is 88HRA ~ 90HRA, density is 8.76g/cm
3, bending strength is 1552MPa ~ 1578MPa.
Embodiment 2
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 47%, ferro-boron FeB powder 28%, Fe powder 12%, Ni powder 1%, C powder 1%, CeO powder 0.2%, WC powder 8%, NbC powder 0.8% and TiC powder 2%.Wherein, ferro-boron FeB powder is containing B mass percent 18%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, take each raw material Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder, WC powder, NbC powder, TiC powder, be that 5:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and add dehydrated alcohol by the 70wt% of raw material gross weight and carry out ball milling 18 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 80ml forming agent SD-A by every kilogram, ball milling 2 hours again, through 80 DEG C of oven dry, crosses 150 mesh sieves, room temperature compression moulding, then inserts sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 4 DEG C, and vacuum tightness is 1.0Pa ~ 1.0 × 10
-3pa, sintering temperature is 1200 DEG C, and soaking time is 100 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 88HRA ~ 89HRA, density is 8.47g/cm
3, bending strength is 1581MPa ~ 1593MPa.
Embodiment 3
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 50%, ferro-boron FeB powder 28%, Fe powder 7%, Cr powder 1%, Ni powder 1%, C powder 0.5%, La
2o
3powder 0.2%, WC powder 8%, NbC powder 1%, VC powder 0.3% and TiC powder 3%.Wherein, ferro-boron FeB powder is containing B mass percent 20%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 5:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 50wt% of raw material gross weight and carry out ball milling 24 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 70ml forming agent SD-B by every kilogram, then ball milling 3 hours, through 70 DEG C of oven dry, cross 200 mesh sieves, room temperature compression moulding, then insert sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 3 DEG C, and vacuum tightness is 1.0 × 10
-1pa ~ 1.0 × 10
-3pa, sintering temperature is 1250 DEG C, and soaking time is 90 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 89HRA ~ 91HRA, density is 8.57g/cm
3, bending strength is 1680MPa ~ 1696MPa.
Embodiment 4
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 32%, Fe powder 8%, Cr powder 1.5%, Ni powder 1%, C powder 0.5%, La
2o
3powder 0.2%, WC powder 9%, NbC powder 0.5%, VC powder 1.8% and TiC powder 0.5%.Wherein, ferro-boron FeB powder is containing B mass percent 18%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 5:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 60wt% of raw material gross weight and carry out ball milling 48 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 90ml forming agent SD-E by every kilogram, then ball milling 3 hours, through 80 DEG C of oven dry, cross 180 mesh sieves, room temperature compression moulding, then insert sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 3 DEG C, and vacuum tightness is 1.0 × 10
-1pa ~ 1.0 × 10
-3pa, sintering temperature is 1260 DEG C, and soaking time is 90 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 90HRA ~ 92HRA, density is 8.55g/cm
3, bending strength is 1780MPa ~ 1796MPa.
Embodiment 5
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 28%, Fe powder 7%, Cr powder 3%, Ni powder 3%, C powder 0.5%, CeO powder 0.6%, WC powder 8%, NbC powder 1.5%, VC powder 1.4% and TiC powder 2%.Wherein, ferro-boron FeB powder is containing B mass percent 21%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 4:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 50wt% of raw material gross weight and carry out ball milling 24 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 80ml forming agent SD-C by every kilogram, ball milling 3 hours again, through 70 DEG C of oven dry, cross 200 mesh sieves, room temperature compression moulding, then insert in vacuum oven and carry out pressure sintering, pass into argon gas and make furnace pressure be 1 ~ 2MPa, controlling temperature rise rate is 6 DEG C ± 3 DEG C, sintering temperature is 1260 DEG C, soaking time is 90 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 90HRA ~ 92HRA, density is 8.53g/cm
3, bending strength is 1825MPa ~ 1856MPa.
Embodiment 6
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 28%, Fe powder 7%, Ni powder 1%, C powder 0.8%, CeO powder 0.2%, WC powder 8%, NbC powder 1.5%, VC powder 5% and TiC powder 3.5%.Wherein, ferro-boron FeB powder is containing B mass percent 20%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 5:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 60wt% of raw material gross weight and carry out ball milling 72 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 90ml forming agent SD-F by every kilogram, ball milling 5 hours again, through 80 DEG C of oven dry, cross 200 mesh sieves, room temperature compression moulding, then insert in vacuum oven and carry out pressure sintering, pass into argon gas and make furnace pressure be 3 ~ 5MPa, controlling temperature rise rate is 6 DEG C ± 3 DEG C, sintering temperature is 1300 DEG C, soaking time is 60 minutes, cools to less than 100 DEG C air coolings of coming out of the stove with the furnace to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 91HRA ~ 93HRA, density is 8.24g/cm
3, bending strength is 1851MPa ~ 1873MPa.
Embodiment 7
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 28%, Fe powder 8%, Ni powder 1%, C powder 0.5%, CeO powder 0.2%, WC powder 8%, NbC powder 5%, VC powder 3% and TiC powder 1.3%.Wherein, ferro-boron FeB powder is containing B mass percent 18%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 4:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 70wt% of raw material gross weight and carry out ball milling 20 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 95ml forming agent 50%SD-E+50%SD-2X by every kilogram, ball milling 3 hours again, through 80 DEG C of oven dry, crosses 200 mesh sieves, room temperature compression moulding, then inserts sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 3 DEG C, and vacuum tightness is 1.0 × 10
-1~ 1.0 × 10
-3pa, sintering temperature is 1250 DEG C, and soaking time is 60 minutes, cools to less than 100 DEG C with the furnace and comes out of the stove and be chilled to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 90HRA ~ 92HRA, density is 8.47g/cm
3, bending strength is 1765MPa ~ 1786MPa.
Embodiment 8
A kind of multicomponent hard strengthens Mo mutually
2feB
2cermet material, the weight percent of each raw material is Mo powder 45%, ferro-boron FeB powder 28%, Fe powder 8%, Ni powder 1%, C powder 0.5%, CeO powder 0.2%, WC powder 8%, NbC powder 0.5%, VC powder 3.8% and TiC powder 5%.Wherein, ferro-boron FeB powder is containing B mass percent 17%.
Above-mentioned multicomponent hard strengthens Mo mutually
2feB
2the preparation method of cermet material, comprises the steps:
1) by said ratio, taking each raw material, is that 5:1 puts into ball grinder by each raw material according to the ratio of abrading-ball and raw material gross weight, and adds dehydrated alcohol by the 60wt% of raw material gross weight and carry out ball milling 28 hours, sloughing dehydrated alcohol and 60 DEG C of oven dry through vacuumizing, obtaining mixed powder;
2) after described mixed powder being added 100ml forming agent SD-E by every kilogram, then ball milling 4 hours, through 80 DEG C of oven dry, cross 200 mesh sieves, room temperature compression moulding, then insert sintering in vacuum oven, controlling temperature rise rate is 6 DEG C ± 3 DEG C, and vacuum tightness is 1.0 × 10
-1~ 1.0 × 10
-3pa, sintering temperature is 1230 DEG C, and soaking time is 90 minutes, cools to less than 100 DEG C with the furnace and comes out of the stove and be chilled to room temperature, namely obtain multicomponent hard and strengthen Mo mutually after having sintered
2feB
2cermet material, its hardness is 91HRA ~ 93HRA, density is 8.26g/cm
3, bending strength is 1832 ~ 1855MPa.
Application examples 1
Multicomponent hard prepared by embodiment 7 is strengthened Mo mutually
2feB
2cermet material does actual condition application testing, and with do not add the Mo of multicomponent hard phase
2feB
2ternary Boride Base Cermets material is used as contrast, so that the excellent properties of material prepared by the present invention to be described.Do not add the Mo of multicomponent hard phase
2feB
2each raw material weight per-cent of Ternary Boride Base Cermets is Mo powder 48%, ferro-boron FeB powder 28.6%, Fe powder 17.5%, Cr powder 2.5%, Ni powder 2.9%, C powder 0.5%, wherein, ferro-boron FeB powder is containing B mass percent 18%, and preparation method completes by embodiment 7.
The multicomponent hard prepared by embodiment 7 strengthens Mo mutually
2feB
2sintering metal thin slice, hardness is 90HRA ~ 92HRA; Do not add Mo prepared by multicomponent hard phase
2feB
2ternary Boride Base Cermets thin slice, hardness is 85HRA ~ 87HRA.By bi-material by after the empiecement dimensioned of 32 casees brick-making mould liner plates, be embedded in mould backing surface respectively, hydraulic brick making machine operating pressure 1100 tons, raw material is river sand, each compacting 32 blocks of standard squares, under this working condition, respectively brick press record compacting number of times be 253463 times and 1013525 times time, detect the average abrasion amount of bi-material, wherein: multicomponent hard strengthens Mo mutually
2feB
2sintering metal is respectively 0.15mm, 0.53mm, does not add Mo prepared by multicomponent hard phase
2feB
2sintering metal thin slice is respectively 0.26mm, 0.78mm.Result shows: multicomponent hard strengthens Mo mutually
2feB
2the wear resistance of sintering metal thin slice is significantly better than the Mo not adding multicomponent hard phase
2feB
2sintering metal thin slice.
Application examples 2
Multicomponent hard prepared by embodiment 6 is strengthened Mo mutually
2feB
2cermet material thin slice does actual condition application testing, and the WC-Co hard alloy of the commercially available YG8 trade mark adopted with brick-making mould backing surface empiecement is used as contrasting, so that the excellent properties of material prepared by the present invention to be described.Prepared multicomponent hard strengthens Mo mutually
2feB
2cermet material thin slice hardness is 91HRA ~ 93HRA, and commercially available YG8 hard metal inserts hardness is 91HRA ~ 93HRA, price 400 yuan/Kg.
The multicomponent hard prepared by embodiment 6 strengthens Mo mutually
2feB
2sintering metal thin slice and YG8 Wimet thin slice are embedded in the backing surface of the brick-making mould of 48 casees respectively, hydraulic brick making machine operating pressure 1300 tons, and raw material is river sand, each compacting 48 blocks of standard squares.Under this working condition, respectively brick press record compacting number of times be 854255 times and 1235612 times time detection bi-material average abrasion amount, wherein: multicomponent hard strengthens Mo mutually
2feB
2sintering metal is respectively 0.58mm, 0.77mm, and YG8 is respectively 0.53mm, 0.75mm.Result shows: multicomponent hard strengthens Mo mutually
2feB
2cermet material and YG8 wear resistance compare favourably, but preparation cost is lower by more than 40% than YG8 Wimet thin slice.
The above is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some improvement and conversion, these all belong to protection scope of the present invention.
Claims (10)
1. a multicomponent hard strengthens Mo mutually
2feB
2cermet material, is characterized in that it is by Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder or La
2o
3powder, WC powder, NbC powder, VC powder and TiC powder mixed sintering obtain, and the weight percent of each raw material is Mo powder 45 ~ 50%, ferro-boron FeB powder 28 ~ 32%, Fe powder 7 ~ 12%, Cr powder 0 ~ 3%, Ni powder 1 ~ 3%, C powder 0.5 ~ 1%, CeO powder or La
2o
3powder 0.2 ~ 0.6%, WC powder 8 ~ 12%, NbC powder 0.5 ~ 5%, VC powder 0 ~ 5%, TiC powder 0.5 ~ 5%.
2. multicomponent hard according to claim 1 strengthens Mo mutually
2feB
2cermet material, is characterized in that described Mo powder purity is not less than 99.6%, and ferro-boron FeB powder is that the purity that 16% ~ 21%, Fe powder purity is not less than 98.5%, Cr powder and Ni powder is not less than 99.5%, C powder and CeO powder, La containing B mass percent
2o
3powder purity is not less than 99.9%; Described Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder and La
2o
3the granularity of powder is 200 order ~ 400 orders.
3. multicomponent hard according to claim 1 strengthens Mo mutually
2feB
2cermet material, it is characterized in that the purity of described WC powder, NbC powder, VC powder and TiC powder is all not less than 99.8%, granularity is 200 order ~ 400 orders.
4. the multicomponent hard according to claim 1 or 2 or 3 strengthens Mo mutually
2feB
2the preparation method of cermet material, is characterized in that it comprises the steps:
1) by said ratio, each raw material Mo powder, ferro-boron FeB powder, Fe powder, Cr powder, Ni powder, C powder, CeO powder or La is taken
2o
3powder, WC powder, NbC powder, VC powder, TiC powder, mix also drying by each raw material through ball milling and obtain mixed powder;
2) described mixed powder and forming agent are mixed, drying, sieve, room temperature compression moulding, then vacuum sintering or pressure sintering is carried out, sintering temperature is 1160 ~ 1300 DEG C, soaking time is 20 ~ 120 minutes, cool to less than 100 DEG C air coolings of coming out of the stove after having sintered with the furnace to room temperature, obtain multicomponent hard and strengthen Mo mutually
2feB
2cermet material.
5. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, it is characterized in that described step 1) in ball milling mixing dry concrete grammar be: be (4 ~ 5) in the ratio of abrading-ball and described raw material gross weight: both mix by 1, and add dehydrated alcohol by 40 ~ 80% of described raw material gross weight and carry out ball milling 5 ~ 80 hours, slough dehydrated alcohol through vacuumizing, then room temperature is dried or 30 ~ 80 DEG C of oven dry.
6. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, it is characterized in that described step 2) in the ratio of mixed powder and forming agent add 50 ~ 100ml forming agent according to every kilogram of mixed powder, through ball milling 50 ~ 80 DEG C of oven dry after 1 ~ 5 hour, sieve, the granularity requirements of sieving is 80 ~ 200 orders.
7. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, is characterized in that described step 2) described in forming agent be SD series, be selected from any one or a few mixture in any proportion in SD-A, SD-B, SD-C, SD-E, SD-D, SD-F, SD-2X.
8. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, is characterized in that described step 2) in temperature rise rate be 6 DEG C ± 4 DEG C.
9. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, when it is characterized in that described vacuum sintering, vacuum tightness is 1.0Pa ~ 1.0 × 10
-3pa.
10. multicomponent hard according to claim 4 strengthens Mo mutually
2feB
2the preparation method of cermet material, when it is characterized in that described pressure sintering, passes into argon gas or rare gas element in vacuum oven, makes pressure be 1 ~ 5MPa.
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| CN109825754A (en) * | 2019-02-11 | 2019-05-31 | 西安交通大学 | A kind of modified Mo2FeB2Based ceramic metal and preparation method thereof |
| 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 |
| CN111203670A (en) * | 2020-03-11 | 2020-05-29 | 山东大学 | Composite particle reinforced metal powder-cored welding wire for CMT arc additive manufacturing and preparation method and application thereof |
| CN113151823A (en) * | 2021-04-25 | 2021-07-23 | 中国海洋大学 | Super-thick gradient wear-resistant layer of brake disc of high-speed rail and preparation method of super-thick gradient wear-resistant layer |
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| CN107904474A (en) * | 2017-11-02 | 2018-04-13 | 北京科技大学 | A kind of molybdenum cobalt boron Ternary Boride Base Cermets material and preparation method thereof |
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| 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 |
| CN111203670A (en) * | 2020-03-11 | 2020-05-29 | 山东大学 | Composite particle reinforced metal powder-cored welding wire for CMT arc additive manufacturing and preparation method and application thereof |
| CN113151823A (en) * | 2021-04-25 | 2021-07-23 | 中国海洋大学 | Super-thick gradient wear-resistant layer of brake disc of high-speed rail and preparation method of super-thick gradient wear-resistant layer |
| 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 |
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