CN109971986A - A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof - Google Patents

A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof Download PDF

Info

Publication number
CN109971986A
CN109971986A CN201910318697.XA CN201910318697A CN109971986A CN 109971986 A CN109971986 A CN 109971986A CN 201910318697 A CN201910318697 A CN 201910318697A CN 109971986 A CN109971986 A CN 109971986A
Authority
CN
China
Prior art keywords
powder
tib
alloy
block
nanoscale
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201910318697.XA
Other languages
Chinese (zh)
Inventor
陈子勇
任伟敏
王汉光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Ke Tianxin Material Co Ltd
Original Assignee
Dalian Ke Tianxin Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian Ke Tianxin Material Co Ltd filed Critical Dalian Ke Tianxin Material Co Ltd
Priority to CN201910318697.XA priority Critical patent/CN109971986A/en
Publication of CN109971986A publication Critical patent/CN109971986A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/10Alloys containing non-metals
    • C22C1/1036Alloys containing non-metals starting from a melt
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C32/00Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ
    • C22C32/0047Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0073Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/10Alloys containing non-metals
    • C22C1/1036Alloys containing non-metals starting from a melt
    • C22C2001/1047Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
    • C22C2001/1052Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites by mixing and casting metal matrix composites with reaction

Abstract

A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof belongs to intermediate alloy technical field.Weigh aluminium powder, titanium valve, boron powder, aluminium ingot as required, Al powder: B powder: Ti powder=(3.5-5.5): (2.5-5.0): (0.5-1.5) (mol) aluminium ingot purity is 99.9%;Ti powder, B powder and Al powder are uniformly mixed and are placed in mold, block is pressed into;Aluminium ingot is heated and is melted, melt is heated up, is pressed into block, melt is waited to ignite and react, after reaction, is pressed into C2Cl6Refining, stirring, skims, and is poured.The present invention is using the elemental powders of purity is high as raw material, without TiAl in the intermediate alloy of preparation3Equal brittlement phases, TiB2Average particle size particle size is 400nm, TiB2Particle dispersion is relatively uniform.

Description

A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof
Technical field
The invention belongs to intermediate alloy technical field, in particular to a kind of Al-TiB of nanoscale homogenization2Intermediate alloy Preparation method.
Background technique
TiB2Particle makes since its density is small, thermal expansion coefficient is low, modulus is high and has good symbiosis and epibiosis with aluminum substrate It becomes widely applied enhancing particle in aluminum matrix composite.Using the TiB of interior preparation of thinking of a way2Due to working condition and technology Horizontal backwardness is so that TiB2Particle size is larger, and particle is less, and is unevenly distributed.It is industrial at present to pass through mixing reactant salt Method largely prepares Al-TiB2Intermediate alloy, typical production process are: K is added into aluminum melt at 750-850 DEG C2TiF6With KBF4, it is reacted sufficiently by mechanical stirring, prepares Al-TiB2Intermediate alloy.The Al- prepared using salt-mixture reaction method TiB2In intermediate alloy tissue, there is TiAl3Mutually exist, for length generally at 100 μm or so, this will mutually be used as one in the composite Kind brittlement phase, it is unfavorable to composite property.TiB in tissue2Particle be in aggregation bulk exist, agglomerated masses internal particle with Particle is sticked together, and has seriously affected the performance of material, while serious pollution problem can be generated in its preparation process.In order to Prepare the high TiB of granule content2The Al-TiB that size is smaller, is evenly distributed2Intermediate alloy has attempted various means ratios both at home and abroad Such as, conventional ceramic technique, self-propagating high-temperature synthetic method etc. are primarily present the disadvantages of preparation efficiency is not high, and reaction process is uncontrollable.This hair It is bright successfully to have been prepared using melt self- propagating direct synthesis technique without TiAl3Equal brittlement phases, and preparation process environmental protection, TiB2Particle Size is smaller, the Al-TiB being evenly distributed2Intermediate alloy.
Summary of the invention
The present invention develops a kind of preparation process using elemental powders B powder, Ti powder using melt self- propagating direct synthesis technique Environmental protection, clean, particle size is smaller and the Al-TiB that is evenly distributed2Intermediate alloy.
To solve the above problems, this patent main technical schemes are as follows: melt self- propagating direct synthesis technique preparation process is utilized, Prepare a kind of nanoscale homogenization Al-TiB2Intermediate alloy.
A kind of Al-TiB2Intermediate alloy, comprising following mass percent component, Ti:4.0-7.0%, B:2.5-4.0 %, Surplus is Al;Ti:B=1:2.3(mol), object phase composition includes α-Al, TiB2
Boron powder, aluminium powder, titanium valve, aluminium ingot, Al powder: B powder: Ti powder=(3.5-5.5): (2.5-5.0): (0.5- are weighed as required 1.5) (mol) aluminium ingot purity is 99.9%;TiB2Average particle size particle size is 400nm, TiB2Particle dispersion is relatively uniform.Its particle ruler Very little and content is apparently higher than the Al-TiB of conventional method preparation2Intermediate alloy, and preparation process environmental protection.
The preparation method of above-mentioned intermediate alloy, Ti and B are aided with Al powder, using melt self- propagating with the addition of elemental powders shape Direct synthesis technique preparation, specifically includes the following steps:
(1) raw material preparation weighs aluminium powder, titanium valve, boron powder, aluminium ingot, it is desirable that Al powder as required: B powder: Ti powder=(3.5-5.5): (2.5-5.0): (0.5-1.5) (mol), aluminium ingot purity 99.9%;
(2) aluminium powder, titanium valve, boron powder are uniformly mixed, uniformly mixed powder is placed in mold, block is pressed into;
(3) aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, the block of step (2) is added in block-by-block Block is pressed into molten aluminum by body with graphite bell jar, and it is direct that bell jar progress melt self- propagating is taken out after reacting and reaction on fire occur Reaction, reaction time are 5-10 min;After the reaction was completed, 30-50min is kept the temperature, heat preservation power is 10-15kw, every during heat preservation Every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, and mixing time is 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, and repeat the process 1-2 times, by aluminum melt in 750-900 It is poured between DEG C in warmed-up 250 DEG C of punching block, obtains the Al-TiB of nanoscale homogenization2Intermediate alloy.
Above-mentioned preferred ice C2Cl6In 100 DEG C of heating 1h, moisture removal is removed;By mold and one layer of the brushing of the tools such as spoon painting of skimming Material prevents Fe impurity element from polluting intermediate alloy.Graphite crucible is selected to carry out melting, graphite rod stirring prevents the pollution of Si.
The present invention solves conventional method preparation difficulty, and slag inclusion is more, and preparation process pollutes environment, and has TiAl3It is remaining Problem, TiB in intermediate alloy2Particle size is small, is evenly distributed, and granule content is high.
Detailed description of the invention
Fig. 1 is Al-TiB2Intermediate alloy entirety pattern;
Fig. 2 is Al-TiB2Distribution of particles in intermediate alloy;
Fig. 3 is Al-TiB2Particle statistic in intermediate alloy.
Specific embodiment
Embodiment 1
Melt self- propagating direct synthesis technique prepares Al-TiB2Pilot process is as follows:
1) raw material preparation, Al-TiB2Intermediate alloy is by aluminium powder, titanium valve, boron powder, aluminium ingot, C2Cl6It prepares, wherein aluminium ingot purity 99.9%。
2) intermediate alloy of 1Kg is prepared, weighs aluminium powder, titanium valve, boron powder, aluminium ingot as required, aluminium burn out rate is 3%.It is required that Al Powder: B powder: Ti powder=4:3:1(mol), remaining is Al.
3) boron powder, titanium valve and aluminium powder are uniformly mixed, uniformly mixed powder is placed in mold, 15 × Φ is pressed into 65mm3Cylindricality powder agglomates, powder agglomates nominal density be 5.30g/cm3
4) by mold and one coating of the tools such as spoon brushing of skimming, coating is ZnO and Na2SiO3Mixture prevents Fe impurity Element pollution fining agent.Graphite crucible is selected to carry out melting, graphite rod stirring prevents the pollution of Si.
5) aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, step 3 is added in block-by-block Block is pressed into molten aluminum by block with graphite bell jar, and it is straight that bell jar progress melt self- propagating is taken out after reacting and reaction on fire occur Reversed to answer, the reaction time is 5-10 min;After the reaction was completed, 30-50min is kept the temperature, heat preservation power is 10-15kw, during heat preservation Every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, mixing time For 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, the slag and oxide skin on surface are removed with spoon of skimming, It repeats the process 1-2 times, aluminum melt is poured between 750-900 DEG C in warmed-up 250 DEG C of punching block, it is equal to obtain nanoscale Homogenized Al-TiB2Intermediate alloy.
Embodiment 2
Melt self- propagating direct synthesis technique prepares Al-TiB2Pilot process is as follows:
1) raw material preparation, Al-TiB2Intermediate alloy is by aluminium powder, titanium valve, boron powder, aluminium ingot, C2Cl6It prepares, wherein aluminium ingot purity 99.9%。
2) intermediate alloy of 1Kg is prepared, weighs aluminium powder, titanium valve, boron powder, aluminium ingot as required, aluminium burn out rate is 3%.It is required that Al Powder: B powder: Ti powder=5:4:1.5(mol), remaining is Al.
3) boron powder, titanium valve and aluminium powder are uniformly mixed, uniformly mixed powder is placed in mold, 15 × Φ is pressed into 65mm3Cylindricality powder agglomates, powder agglomates nominal density be 5.30g/cm3
4) by mold and one coating of the tools such as spoon brushing of skimming, coating is ZnO and Na2SiO3Mixture prevents Fe impurity Element pollution fining agent.Graphite crucible is selected to carry out melting, graphite rod stirring prevents the pollution of Si.
5) aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, step 3 is added in block-by-block Block is pressed into molten aluminum by block with graphite bell jar, and it is straight that bell jar progress melt self- propagating is taken out after reacting and reaction on fire occur Reversed to answer, the reaction time is 5-10 min;After the reaction was completed, 30-50min is kept the temperature, heat preservation power is 10-15kw, during heat preservation Every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, mixing time For 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, the slag and oxide skin on surface are removed with spoon of skimming, It repeats the process 1-2 times, aluminum melt is poured between 750-900 DEG C in warmed-up 250 DEG C of punching block, it is equal to obtain nanoscale Homogenized Al-TiB2Intermediate alloy.
Embodiment 3
Melt self- propagating direct synthesis technique prepares Al-TiB2Pilot process is as follows:
1) raw material preparation, Al-TiB2Intermediate alloy is by aluminium powder, titanium valve, boron powder, aluminium ingot, C2Cl6It prepares, wherein aluminium ingot purity 99.9%。
2) intermediate alloy of 1Kg is prepared, weighs aluminium powder, titanium valve, boron powder, aluminium ingot as required, aluminium burn out rate is 3%.It is required that Al Powder: B powder: Ti powder=3.5:2.5:0.5(mol), remaining is Al.
3) boron powder, titanium valve and aluminium powder are uniformly mixed, uniformly mixed powder is placed in mold, 15 × Φ is pressed into 65mm3Cylindricality powder agglomates, powder agglomates nominal density be 5.30g/cm3
4) by mold and one coating of the tools such as spoon brushing of skimming, coating is ZnO and Na2SiO3Mixture prevents Fe impurity Element pollution fining agent.Graphite crucible is selected to carry out melting, graphite rod stirring prevents the pollution of Si.
5) aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, step 3 is added in block-by-block Block is pressed into molten aluminum by block with graphite bell jar, and it is straight that bell jar progress melt self- propagating is taken out after reacting and reaction on fire occur Reversed to answer, the reaction time is 5-10 min;After the reaction was completed, 30-50min is kept the temperature, heat preservation power is 10-15kw, during heat preservation Every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, mixing time For 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, the slag and oxide skin on surface are removed with spoon of skimming, It repeats the process 1-2 times, aluminum melt is poured between 750-900 DEG C in warmed-up 250 DEG C of punching block, it is equal to obtain nanoscale Homogenized Al-TiB2Intermediate alloy.
Embodiment 4
Melt self- propagating direct synthesis technique prepares Al-TiB2Pilot process is as follows:
1) raw material preparation, Al-TiB2Intermediate alloy is by aluminium powder, titanium valve, boron powder, aluminium ingot, C2Cl6It prepares, wherein aluminium ingot purity 99.9%。
2) intermediate alloy of 1Kg is prepared, weighs aluminium powder, titanium valve, boron powder, aluminium ingot as required, aluminium burn out rate is 3%.It is required that Al Powder: B powder: Ti powder=5.5:5.0:1.5(mol), remaining is Al.
3) boron powder, titanium valve and aluminium powder are uniformly mixed, uniformly mixed powder is placed in mold, 15 × Φ is pressed into 65mm3Cylindricality powder agglomates, powder agglomates nominal density be 5.30g/cm3
4) by mold and one coating of the tools such as spoon brushing of skimming, coating is ZnO and Na2SiO3Mixture prevents Fe impurity Element pollution fining agent.Graphite crucible is selected to carry out melting, graphite rod stirring prevents the pollution of Si.
5) aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, step 3 is added in block-by-block Block is pressed into molten aluminum by block with graphite bell jar, and it is straight that bell jar progress melt self- propagating is taken out after reacting and reaction on fire occur Reversed to answer, the reaction time is 5-10 min;After the reaction was completed, 30-50min is kept the temperature, heat preservation power is 10-15kw, during heat preservation Every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, mixing time For 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, the slag and oxide skin on surface are removed with spoon of skimming, It repeats the process 1-2 times, aluminum melt is poured between 750-900 DEG C in warmed-up 250 DEG C of punching block, it is equal to obtain nanoscale Homogenized Al-TiB2Intermediate alloy.

Claims (5)

1. a kind of nanoscale homogenizes Al-TiB2Intermediate alloy, it is characterised in that: comprising following mass percent component, Ti: 4.0-7.0%, surplus Al;Ti/B=1/2.3(mol), the object phase composition of intermediate alloy includes α-Al, TiB2Phase.
2. a kind of nanoscale according to claim 1 homogenizes Al-TiB2Intermediate alloy, it is characterised in that: TiB2Average Particle size is in 400nm hereinafter, being uniformly distributed.
3. a kind of nanoscale homogenizes Al-TiB2The preparation method of intermediate alloy, it is characterised in that: specifically includes the following steps:
Raw material preparation weighs aluminium powder, titanium valve, boron powder, aluminium ingot, it is desirable that Al powder: B powder: Ti powder=(3.5-5.5): (2.5- as required 5.0): (0.5-1.5) (mol), aluminium ingot purity 99.9%;
Aluminium powder, titanium valve, boron powder are uniformly mixed, uniformly mixed powder is placed in mold, block is pressed into;
Aluminium ingot is heated to 700-900 DEG C using well formula resistance furnace, is completely melt to aluminium ingot, the block of step (2) is added in block-by-block, Block is pressed into molten aluminum with graphite bell jar, bell jar is taken out after reacting and reaction on fire occur, it is directly anti-to carry out melt self- propagating It answers, the reaction time is 5-10 min;After the reaction was completed, keep the temperature 30-50min, heat preservation power be 10-15kw, during heat preservation every 10min hand operated mixing 1-2min;After heat preservation, cooling uses mechanical stirring, revolving speed 300-500r/s, and mixing time is 10-20min;It is pressed into C2Cl6Refining, stirring stand 5-20min, skim, and repeat the process 1-2 times, by aluminum melt in 750-900 It is poured between DEG C in warmed-up 250 DEG C of punching block, obtains the Al-TiB of nanoscale homogenization2Intermediate alloy.
4. a kind of nanoscale according to claim 3 homogenizes Al-TiB2The preparation method of intermediate alloy, it is characterised in that: Al powder in step (1): B powder: Ti powder=4:3:1(mol).
5. a kind of nanoscale according to claim 3 homogenizes Al-TiB2The preparation method of intermediate alloy, it is characterised in that: Al powder in step (1): B powder: Ti powder=5:4:1.5(mol).
CN201910318697.XA 2019-04-19 2019-04-19 A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof Withdrawn CN109971986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910318697.XA CN109971986A (en) 2019-04-19 2019-04-19 A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910318697.XA CN109971986A (en) 2019-04-19 2019-04-19 A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof

Publications (1)

Publication Number Publication Date
CN109971986A true CN109971986A (en) 2019-07-05

Family

ID=67085391

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910318697.XA Withdrawn CN109971986A (en) 2019-04-19 2019-04-19 A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109971986A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484493A (en) * 1993-06-02 1996-01-16 Kb Alloys, Inc. Aluminum base alloy
JP2009515041A (en) * 2005-11-02 2009-04-09 トゥビタク Method for producing grain refined mother alloy
CN102644010A (en) * 2012-04-11 2012-08-22 北京工业大学 Al-Ti-B-Er refiner and preparation method thereof
CN103276253A (en) * 2013-04-18 2013-09-04 北京工业大学 Low-cost Al-Ti-B refiner and preparation method thereof
CN107190161A (en) * 2017-05-12 2017-09-22 北京工业大学 A kind of Al TiB of large volume fraction2Pure phase intermediate alloy and preparation method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484493A (en) * 1993-06-02 1996-01-16 Kb Alloys, Inc. Aluminum base alloy
JP2009515041A (en) * 2005-11-02 2009-04-09 トゥビタク Method for producing grain refined mother alloy
CN102644010A (en) * 2012-04-11 2012-08-22 北京工业大学 Al-Ti-B-Er refiner and preparation method thereof
CN103276253A (en) * 2013-04-18 2013-09-04 北京工业大学 Low-cost Al-Ti-B refiner and preparation method thereof
CN107190161A (en) * 2017-05-12 2017-09-22 北京工业大学 A kind of Al TiB of large volume fraction2Pure phase intermediate alloy and preparation method

Similar Documents

Publication Publication Date Title
CN107190161B (en) A kind of Al-TiB of large volume fraction2Pure phase intermediate alloy and preparation method
US20060057317A1 (en) Vessel for holding silicon and method of producing the same
CN102644010B (en) Al-Ti-B-Er refiner and preparation method thereof
CN100410400C (en) Method for preparation of aluminum scandium alloy by alumino-thermic reduction method
CN101300367A (en) Process for producing a grain refining master alloy
CN103276253A (en) Low-cost Al-Ti-B refiner and preparation method thereof
CN104532044B (en) Low-cost and high-efficiency Al-Ti-C-Ce refining agent and preparation method thereof
CN100443605C (en) Preparation method of granule-mixed reinforced aluminium-based composite material
CN103233146A (en) High-efficiency clean Al-Ti-B refiner and preparation method thereof
CN105695805A (en) Preparation method of strontium aluminum alloy with high strontium content
CN100516262C (en) Method for preparing magnesium and magnesium alloy composite grain refiner
CN109020554A (en) Stainless steel crucible coating and preparation method thereof for Melting of Al-li Alloy
CN105734334A (en) Preparation method for aluminum matrix composite material
CN101338381B (en) Method for preparing refiner for aluminium-titan-carbon-strontium alloy
CN108754203A (en) A kind of Alar fining agent of degeneration and its preparation method and application
CN1327020C (en) Method for preparing aluminium based composite material enhanced by miscellaneous granules in situ
CN109971986A (en) A kind of nanoscale homogenization Al-TiB2Intermediate alloy and preparation method thereof
CN109825736A (en) A kind of Al-Ti-B refiner and preparation method thereof
WO2001004064A1 (en) Process for casting and forming slag products
CN103192064A (en) Al-Ti-B-C refiner and preparation method
CN109811161B (en) Large-volume-number nanoscale Al-TiB2Intermediate alloy and preparation method thereof
CN108796261B (en) In-situ self-generated TiB2Particle reinforced aluminum-based composite material and preparation method thereof
CN109957682A (en) A kind of nanoscale Al-TiB2Intermediate alloy and preparation method thereof
CN106756352B (en) Raw Cr in one kind2B and MgO diphase particles strengthen the preparation method of magnesium-based composite material
Reddy Reaction-bonded silicon carbide refractories

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20190705