CN108007273A - A kind of preparation method of boron carbide-titanium alloy composite armour - Google Patents
A kind of preparation method of boron carbide-titanium alloy composite armour Download PDFInfo
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- CN108007273A CN108007273A CN201711030328.8A CN201711030328A CN108007273A CN 108007273 A CN108007273 A CN 108007273A CN 201711030328 A CN201711030328 A CN 201711030328A CN 108007273 A CN108007273 A CN 108007273A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0414—Layered armour containing ceramic material
- F41H5/0421—Ceramic layers in combination with metal layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/004—Devices for shaping artificial aggregates from ceramic mixtures or from mixtures containing hydraulic binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/025—Hot pressing, e.g. of ceramic materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/563—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on boron carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention provides a kind of preparation method of boron carbide titanium alloy composite armour, and this method comprises the following steps：1）1 2wt% graphene solutions are prepared, add dispersant, it is dispersed, obtain the solution that graphene uniform disperses；2）Add in boron carbide raw material powder, select the boron carbide powder that average grain diameter is 3 5um to be used as raw material, add 3% 4% graphite powder as sintering aid, the average grain diameter of graphite powder is 1 2um；3）Boron carbide raw material powder and graphene solution mixing and ball milling are formed into slurry；4）It is granulated, drying obtains pelletizing；5）Pelletizing is loaded into mould, hot pressed sintering；6）Potsherd is spliced into ceramic wafer, ceramic wafer is placed in a mold, is preheated, taking-up is placed in pouring basin；7）Smelting furnace is warming up to certain temperature, pours and is cast from around ceramic wafer after titanium alloy is completely melt, encapsulation of the metal to ceramic material is realized after molten titanium alloy graining.
Description
Technical field
The invention belongs to bulletproof ceramic field, and in particular to a kind of preparation method of boron carbide-titanium alloy composite armour.
Background technology
With the fast development of science and technology, the threat faced on battlefield is increasing so that ballistic armor materials increasingly towards
High rigidity, high intensity, high tenacity, the direction of low-density are developed.Conventional metals bullet resistant material is big due to density so that vehicle, ship
Oceangoing ship and aircraft have to sacrifice its payload, while the blocked up armoring operating flexibility for reducing equipment again, therefore, lightweight
Bullet resistant material has become current research hotspot and development trend.Ceramic material has big intensity height, hardness, high temperature resistant, resists
Oxidation, the excellent performance such as density is low, and energy-absorbing effect, wear effects, kinetic effect etc. are beneficial to play ceramic material
Anti- resilience energy power, these characteristics are not available for metal material, high molecular material and its composite material.Wherein B4C ceramics tools
There is light specific gravity（2.52g/cm3）, hardness it is high（~36GPa）, elasticity modulus it is big（~45GPa）, and good chemical stability
Deng excellent properties, it is the bullet-proof ceramic of modern efficient and light weight bulletproof armour first choice, prevents in the soldier of the advanced countries such as American and Britain
The fields such as shield, military secret protection, Vehicle protector are widely used.Titanium alloy has excellent hardness and toughness, its density
Less than armour steel, although density is only the 60% of armour steel, its intensity can match in excellence or beauty with homogeneous steel, and toughness is also better than most of
Aluminum alloy armor, the superior 30%-40% of homogeneous steel armor of integrated protection performance ratio equivalent weight.
B4The fusing point of C is up to 2350 DEG C, pure B4C-material because of its high covalently linkage content and low self-diffusion coefficient, agglutinating property compared with
Difference, usually can promote its sintering by adding sintering aid.In addition, B4The low tenacity of C ceramics seriously affects its bulletproof performance.
Therefore the mode of component and structure composite can be taken to improve B4The toughness of C ceramics.B at present4The preparation of C ceramics is mainly heat
Press three kinds of sintering, pressureless sintering, reaction-sintered techniques.Wherein hot pressed sintering is the main side for preparing high-performance boron carbide ceramics
Method, generally with thin boron carbide powder 2100 DEG C i.e. can obtain it is relatively denser in 98% boron carbide product.At present, prepare big
Sized ceramics plate armour still suffers from bigger difficulty.
The content of the invention
To solve problem above, the present invention provides a kind of preparation method of boron carbide-titanium alloy composite armour, this method bag
Include following steps：1）1-2wt% graphene solutions are prepared, add dispersant, dispersed, acquisition graphene uniform disperses molten
Liquid；2）Add in boron carbide raw material powder, select the boron carbide powder that average grain diameter is 3-5um to add 3%-4%'s as raw material
For graphite powder as sintering aid, the average grain diameter of graphite powder is 1-2um；3）Boron carbide raw material powder and graphene solution are mixed
Ball milling forms slurry；4）It is granulated, drying obtains pelletizing；5）Pelletizing is loaded into mould, hot pressed sintering；6）Potsherd is spliced
Into ceramic wafer, ceramic wafer is placed in a mold, is preheated, taking-up is placed in pouring basin；7）Smelting furnace is warming up to a constant temperature
Degree, pours after titanium alloy is completely melt and casts from around ceramic wafer, realizes metal to ceramic material after molten titanium alloy graining
Encapsulation.
Preferably, the step 1）In graphene solution for graphene alcoholic solution or graphene aqueous solution.
Preferably, the step 1）In dispersant be 1-methyl-2-pyrrolidinone, and pass through ultrasound, stirring or ball milling side
Formula is uniformly dispersed.
Preferably, the step 1）The piece footpath ＞ 1um of middle graphene, 10 layers of number of plies ＜, the additive amount of graphene is carbon
Change the 1-5wt% of boron material powder.
Preferably, the step 3）It is middle that boron carbide raw material powder and graphene solution are added into ball milling 8- in ball mill
10h, drum's speed of rotation 30-50rpm, ratio of grinding media to material 2：1.
Preferably, 350 revs/min, supersonic frequency 40-60KHz of the spray disk rotating speed of the comminutor, pelletizing drying temperature
100 DEG C of degree.
Hot pressing is carried out preferably, pelletizing is fitted into graphite jig, 2000-2200 DEG C of temperature, pressure 20-50MPa,
Sintering time 30-60min.
Preferably, the mould is regular hexagon mould.
Preferably, the step 7）In titanium alloy be Ti-Al-V-Fe alloys.
Compared with prior art, the invention has the advantages that：
Boron carbide provided by the invention-titanium alloy composite armour, the graphene of high degree of dispersion is two-dimensional material in potsherd, can be led to
Surface modification and modification are crossed, the mutual attractive force between graphene synusia is significantly reduced and avoids reuniting, in some liquid mediums
In have well dispersiveness and stability, so as to prepare the graphene solution of stable dispersion, by itself and ceramic matrix slurry
Mixing, can obtain graphene-ceramics mixed material that implantation works well, and graphene is split by pinning ceramic interface, induction
Line deflection, bifurcated and crackle bridging, graphene, which are broken and extract the mechanism such as energy-absorbing, to be played the role of strengthening toughening.Our company uses
The graphene toughness reinforcing hot pressing boron carbide technology of independent development, graphene uniform is dispersed in boron carbide powder, afterwards using heat
Pressure sintering, obtains the boron carbide ceramics material of function admirable, its bending strength is improved from about 350MPa after adding graphene
More than 500MPa is arrived, comprehensive ballistic performance greatly enhances.Boron carbide ceramics is poured into a mould with titanium alloy, forms four bread of titanium alloy
Cover the overall structure of boron carbide.The advantages of technology：First, technical maturity, process is simple, can pour into a mould complicated shape and it is net closely into
Shape product；
Boron carbide ceramics is poured into a mould with titanium alloy, forms the overall structure that titanium alloy four sides coats boron carbide.The advantages of technology：
First, technical maturity, process is simple, can pour into a mould complicated shape and net nearly formed product；Can keep to greatest extent ceramics and
The respective characteristic of titanium alloy, the advantages of giving full play to boron carbide ceramics lightweight high hard and titanium alloy high-strength and high ductility；Titanium alloy is to pottery
The three-dimensional constraining structure of porcelain plate can effectively slow down adverse effect of the boron carbide ceramics brittleness to material；The design of hexagonal ceramic piece
Be conducive to rationally arranging and combine closely for potsherd, and mutually constraint, be conducive to prepare large-sized bulletproof armour.Ceramics
The circular convex at the back side makes constraint of the titanium alloy to ceramics more firm, improves its anti-multiple elastic energy；The boron carbide pottery of high rigidity
Porcelain and the titanium alloy of high intensity are combined into one structure, and new approach has been opened up to prepare high-performance bulletproof composite plate armour.
The regular hexagon potsherd that regular hexagon ceramic mold obtains is designed with beneficial to the reasonable arrangement of potsherd and tight
Close combination, and mutually constraint, facilitate the splicing of ceramic wafer to be conducive to prepare large-sized bulletproof armour.
Brief description of the drawings
Fig. 1 is the structure diagram of comminutor provided by the invention；
Fig. 2 is the top view of potsherd provided by the invention；
Fig. 3 is the side view of potsherd provided by the invention；
Fig. 4 is the top view of boron carbide titanium alloy composite armour provided by the invention；
Fig. 5 is the sectional view of boron carbide titanium alloy composite armour provided by the invention.
Embodiment
The present invention is further described with reference to Figure of description.
The preparation of 1 boron carbide ceramics piece of embodiment
Step 1）Material powder：The boron carbide powder that average grain diameter is 3-5 um is selected to add the graphite of 3%-4% as raw material
For powder as sintering aid, the average grain diameter of graphite powder is 1-2 um；
Step 2）Prepare graphene solution：The graphene aqueous solution or alcoholic solution of 1-2 wt% is prepared, adds N- methyl pyrroles
Pyrrolidone is dispersant, and ultrasonic disperse 10-20 h, obtain the solution that graphene uniform disperses；The wherein piece footpath ＞ of graphene
10 layers of 1um, number of plies ＜, the additive amount of graphene account for the 1-5 wt% of boron carbide powder；
Step 3）By step 1）In obtained powder and step 2）In obtained graphene solution add ball milling 8- in ball mill
10h, drum's speed of rotation 30-50rpm, ratio of grinding media to material 2：1；
Step 4）It is granulated：As shown in Figure 1, using comminutor, comminutor is the homemade comminutor of present inventor, is specifically made
The structure of grain machine is as shown in Figure 1, including size barrel 1, wriggling pump motor, peristaltic pump 2, sprays disk 3, spray coil motor, comminutor bucket 4,
Vltrasonic device 6, discharge port 7, the size barrel 1 are connected with peristaltic pump 2, the peristaltic pump 2 with spray disk 3 connect, it is described spray disk 3 with
Comminutor bucket 4 connects, and the comminutor bucket 4 is connected with Vltrasonic device 6, and the spray disk is equipped with air port, wherein the air port can be with
For the through hole that surrounding opens up along spray disk center axis.The air port is connected with air blower, be passed through in the Vltrasonic device from
Sub- water 5.The specific works step of the comminutor is：It it is 350 revs/min by spray 3 speed setting of disk, the frequency of Vltrasonic device is set
It is set to 40-60 KHz；Wriggling pump motor is driven, by above-mentioned steps 3）Slurry in the good size barrel of middle ball milling passes through peristaltic pump 2
It is transported in the spray disk 3 on comminutor top, spray coil motor drive system driving spray disk 3 rotates, and rotating spray disk 3 is made by centrifuging
Disperseed with by slurry, scattered slurry is blown in water of the bottom with Vltrasonic device 6 by air blower by air port, and particle does not dissolve in
Water and be precipitated to bottom, in this way, obtain the moderate powder of even particle size distribution, good fluidity, moisture, the powder that will be obtained
Material drying, drying temperature are 100-110 DEG C, and pelletizing is obtained after drying；
Step 5）Pelletizing is fitted into the graphite jig of preformed shape and carries out hot pressing, 2000-2200 DEG C of temperature, pressure 20-
50MPa, sintering time 30-60min.
As shown in Fig. 2, using graphite jig, regular hexagon potsherd 8 is obtained, as shown in figure 3, potsherd surface is arc-shaped
9, the distance between highest face and potsherd bottom of the arc are 10mm or so, in this way, ballistic performance strengthens；In addition, institute
State potsherd back to upwardly extend equipped with ring-shaped pottery 10, ring-shaped pottery raises up, the raised and regular hexagon potsherd 8
It is integrally formed；Its height is for 2mm or so, as shown in Fig. 2, the edge of the ring-shaped pottery piece is close to the side of regular hexagon potsherd
Edge, in this way, potsherd is more firm in the process of later stage splicing cast.
2 boron carbides of embodiment-titanium alloy composite armour
Step 1）According to the preparation method of embodiment 1, and 1 step 5 of embodiment）In graphite jig regular hexagon, such as Fig. 2 institutes
Show, obtain the potsherd of regular hexagon, potsherd 8 is stitched together to form ceramic wafer 11.
Step 2）First according to the mould of the prefabricated definite shape of size of boron carbide ceramics plate 11, by ceramic wafer to be cast
11 place in a mold, and when preheating 1 is small in 400 DEG C of baking ovens, taking-up is placed in pouring basin.Then smelting furnace is warming up to one
Constant temperature degree, pours after titanium alloy is completely melt and casts from around ceramic block, realizes metal to ceramic material after molten titanium alloy graining
The encapsulation of material, forms the overall structure of titanium alloy parcel boron carbide ceramics.The dosage of titanium alloy pours into a mould Size calculation according to product,
It is as shown in Figure 3 to pour dimensioning.The titanium alloy that the present invention uses is the Ti-Al-V-Fe alloys for having good mechanical and ballistic performance.
As shown in figure 4, one block of boron carbide-titanium alloy composite armour is obtained, the length of 340mm, width 330mm, such as
Shown in Fig. 5, distance of 12 upper surface of wrapping layer titanium alloy apart from 11 surface of boron carbide ceramics plate is 3mm, wrapping layer titanium alloy 12
Distance of the lower surface apart from 11 back of boron carbide ceramics plate is 10mm；12 left surface of wrapping layer titanium alloy and right flank distance carbonization
The distance on 11 surface of boron ceramic wafer is 5mm.
Comparative example 1
Identical with the experimental procedure of embodiment 1, unique difference does not add graphene solution.
Embodiment 1 and the above-mentioned boron carbide ceramics plate being prepared are subjected to ballistic performance test, the results showed that, add stone
Its bending strength has brought up to more than 500MPa from about 350MPa after black alkene, and comprehensive ballistic performance greatly enhances；
Add graphene and toughness reinforcing is carried out to boron carbide ceramics, be dispersed in graphene uniform using techniques such as ultrasound, stirring, ball millings
In ceramic matrix, the graphene film of high degree of dispersion is effectively improved the brittleness of ceramic material.
Boron carbide ceramics is poured into a mould with titanium alloy, forms the overall structure that titanium alloy four sides coats boron carbide.The technology
Advantage：First, technical maturity, process is simple, can pour into a mould complicated shape and net nearly formed product；
The respective characteristic of ceramics and titanium alloy can be kept to greatest extent, given full play to the high hard and titanium of boron carbide ceramics lightweight and closed
The advantages of golden high-strength and high ductility；Titanium alloy can effectively slow down the three-dimensional constraining structure of ceramic wafer boron carbide ceramics brittleness to material
Adverse effect；Regular hexagon potsherd is designed with rationally arranging and combining closely beneficial to potsherd, and mutually constraint, has
Beneficial to preparing large-sized bulletproof armour.The annular protrusion at the ceramic back side makes constraint of the titanium alloy to ceramics more firm, improves it
Anti- multiple elastic energy；The boron carbide ceramics of high rigidity and the titanium alloy of high intensity are combined into one structure, are answered to prepare high-performance
Close bulletproof armour and open up new approach.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention is not limited thereto, appoint
What those skilled in the art is in the technical scope of present disclosure, technique according to the invention scheme and its invention structure
Think of is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (9)
- A kind of 1. preparation method of boron carbide-titanium alloy composite armour, it is characterised in that：This method comprises the following steps：1）Match somebody with somebody 1-2wt% graphene solutions processed, add dispersant, dispersed, obtain the solution that graphene uniform disperses；2）Add boron carbide In material powder, the boron carbide powder that average grain diameter is 3-5um is selected to add the graphite powder of 3%-4% as sintering as raw material Auxiliary agent, the average grain diameter of graphite powder is 1-2um；3）Boron carbide raw material powder and graphene solution mixing and ball milling are formed into slurry； 4）It is granulated, drying obtains pelletizing；5）Pelletizing is loaded into mould, hot pressed sintering；6）Potsherd is spliced into ceramic wafer, will be made pottery Porcelain plate places in a mold, and preheating, taking-up is placed in pouring basin；7）Smelting furnace is warming up to certain temperature, treats that titanium alloy is complete Pour and cast from around ceramic wafer after running down, encapsulation of the metal to ceramic material is realized after molten titanium alloy graining.
- 2. the preparation method of boron carbide ceramics piece according to claim 1, it is characterised in that：The step 1）In graphite Alkene solution is the alcoholic solution of graphene or the aqueous solution of graphene.
- 3. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The step 1）In dispersant be 1-methyl-2-pyrrolidinone, and by ultrasound, stirring or ball milling method be uniformly dispersed.
- 4. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The step 1）The piece footpath ＞ 1um of middle graphene, 10 layers of number of plies ＜, the additive amount of graphene are the 1-5wt% of boron carbide raw material.
- 5. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The step 3）It is middle that boron carbide raw material powder and graphene solution are added into ball milling 8-10h in ball mill, drum's speed of rotation 30-50rpm, ball Expect ratio 2：1.
- 6. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The granulation 350 revs/min, supersonic frequency 40-60KHz of the spray disk rotating speed of machine, 100 DEG C of pelletizing drying temperature.
- 7. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：By pelletizing It is fitted into graphite jig and carries out hot pressing, 2000-2200 DEG C of temperature, pressure 20-50MPa, sintering time 30-60min.
- 8. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The mould For regular hexagon mould.
- 9. the preparation method of boron carbide according to claim 1-titanium alloy composite armour, it is characterised in that：The step 7）In titanium alloy be Ti-Al-V-Fe alloys.
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| CN111517769A (en) * | 2020-04-24 | 2020-08-11 | 朔州西廊煤炭科技有限公司 | Method for preparing boron carbide anti-damage ceramic engineering material by utilizing coal solid waste or bauxite solid waste |
| CN111960850A (en) * | 2020-08-10 | 2020-11-20 | 宁波普莱斯帝金属制品有限公司 | Preparation method and application of boron carbide composite material |
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| CN110608636A (en) * | 2019-08-16 | 2019-12-24 | 中国航发北京航空材料研究院 | Titanium alloy composite armor |
| CN110744064A (en) * | 2019-11-20 | 2020-02-04 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite lattice armor with three-dimensional constraint structure and preparation method and application thereof |
| CN110744064B (en) * | 2019-11-20 | 2021-12-03 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite lattice armor with three-dimensional constraint structure and preparation method and application thereof |
| CN111069572A (en) * | 2019-12-25 | 2020-04-28 | 南京理工大学 | Cast-in type additive manufacturing method for large-size ceramic particle-steel composite material |
| CN111069572B (en) * | 2019-12-25 | 2022-05-13 | 南京理工大学 | Cast-in type additive manufacturing method for large-size ceramic particle-steel composite material |
| CN111517769A (en) * | 2020-04-24 | 2020-08-11 | 朔州西廊煤炭科技有限公司 | Method for preparing boron carbide anti-damage ceramic engineering material by utilizing coal solid waste or bauxite solid waste |
| CN111960850A (en) * | 2020-08-10 | 2020-11-20 | 宁波普莱斯帝金属制品有限公司 | Preparation method and application of boron carbide composite material |
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Application publication date: 20180508 |