CN1283400C - Process for preparing composite metal powder containing aluminium nitride - Google Patents
Process for preparing composite metal powder containing aluminium nitride Download PDFInfo
- Publication number
- CN1283400C CN1283400C CNB2004100795895A CN200410079589A CN1283400C CN 1283400 C CN1283400 C CN 1283400C CN B2004100795895 A CNB2004100795895 A CN B2004100795895A CN 200410079589 A CN200410079589 A CN 200410079589A CN 1283400 C CN1283400 C CN 1283400C
- Authority
- CN
- China
- Prior art keywords
- powder
- aluminium
- metal
- aluminium nitride
- composite metal
- 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.)
- Expired - Fee Related
Links
Landscapes
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention relates to a preparation method for composite metal powder containing aluminium nitride. In the present invention, metal powder including copper powder, titanium powder and aluminium powder or metal including copper, titanium and aluminum, and aluminum alloy powder are used as the raw materials, and ammonia water or liquid nitrogen is used as a reactant; the raw materials and the reactant are put in a ball mill to carry out the mechanical alloying treatment, and the technical conditions (for example the time, the rotary speed, the ratio of balls to the material, etc.) for the mechanical alloying treatment are well controlled, so that aluminum in the alloy powder is completely or partially azotized so as to finally obtain the composite metal powder containing aluminium nitride. After the composite metal powder containing aluminium nitride is prepared, a metal matrix composite material containing aluminium nitride reinforced metal can be prepared by using the techniques of pressing, sintering, processing, etc.; the metal matrix composite material containing aluminium nitride reinforced metal can be applied to electrical equipment which needs the high heat dissipation speed performance.
Description
(1) technical field: metal-base composites scientific domain
(2) background technology: the main means that metal-base composites is strengthened are to introduce second hardening constituent (ceramic phase) to form composite, to satisfy the performance requirement under the different environment for use conditions.Aluminium nitride ceramics material thermal conductivity height (close) with aluminium, nontoxic, material source is extensive, and dielectric constant and mechanical performance and aluminium oxide near etc. advantage, be widely used in the high thermal conductive substrate material.Aluminium nitride is added the metal-base composites that can prepare high thermal conductivity, high strength and hardness in the metal, can be applied in the electric equipment that needs rapid heat dissipation.Preparation method about nitrogen aluminum composite metal powder does not appear in the newspapers.And that the preparation method of known second phase strengthened metal base composite material has is following several:
1. powder metallurgic method: it is that metal powder and wild phase powder are fully mixed that known powder metallurgic method prepares metal-base composites, and mixed-powder prepares metal-base composites through press forming, sintering, repressing and re-sintering, extruding drawing or rolling mill practice again;
2. composite casting: be meant with alloying element or by second hardening constituent and melt with metal or first deposite metal, be added in the melt metal liquid second again, inject mold when the vigorous stirring melt extremely partly solidifies attitude then, make metal-base composites by extruding drawing or rolling mill practice at last;
3. internal oxidation: this method is the alloy powder with two kinds of metals preparations, be placed on the atmospheric condition heating down of certain partial pressure of oxygen, make wherein a kind of metal carry out oxidation and generate the second phase particle, suppress then, means such as sintering, processing prepare the second phase particles reiforced metal-base composition.
4. reaction synthesis method: this method is that alloy powder and the substrate metal oxide powder with two kinds of (or two or more) metals preparations is raw material, through after the compression moulding, under the control preparation process condition, generate a kind of preparation method that metal oxide particle strengthens matrix material.In the technology of preparing of the known second phase particles reiforced metal-base composition, powder metallurgic method technology more complicated, easily pollute at the powder interface, the interface is in conjunction with poor; Composite casting is air-breathing in the process that stirs easily, causes in the product pore many, and performance descends; Internal oxidation is difficult to control oxidizing atmosphere, when the second phase metal is carried out oxidation, causes the oxidation to parent metal, makes the composite that is obtained not reach estimated performance; Reaction synthesis method has very high requirement to the performance of substrate metal oxide, and general substrate metal oxide is difficult to reach requirement, has limited the extensive use of this method in particles reiforced metal-base composition.
(3) summary of the invention
Purpose of the present invention is not only the deficiency that exists at known technology and a kind of new method of succeeding in developing, and is preparation nitrogen aluminum composite metal powder and a kind of technology of preparing of adopting; This method is a raw material with a kind of in the alloyed powder of mixed powder, copper or the titanium of mixed powder, titanium valve and the aluminium powder of copper powder and aluminium powder and aluminium, the aluminium powder, with ammoniacal liquor or liquid nitrogen is reactant, and control the time and the rotating speed of mechanical alloying well, make the aluminium in the material powder that all or part of nitrogenize take place, finally obtain nitrogen aluminum composite metal powder.After having prepared this nitrogen aluminum composite metal powder, just can prepare with aluminium nitride by technologies such as compacting, sintering, processing is to have strengthened the composite of metal.
The present invention realizes by following technical scheme.
Adopt known powder-making technique to prepare metal dust and aluminium powder (alloyed powder that perhaps directly prepares metal and aluminium) earlier, then with ammoniacal liquor (or liquid nitrogen) as raw material, the time of control mechanical alloying and rotating speed carry out mechanical alloying to be handled, and finally obtains the composite metal powder of nitrogen aluminium.
One, material component, granularity and shared percentage by weight thereof:
1) raw material: the alloyed powder of the mixed powder of the mixed powder of copper powder and aluminium powder, titanium valve and aluminium powder, copper or titanium and aluminium, wherein to account for the percentage of alloy gross weight be 0.6-40% to aluminium element, and surplus is copper or titanium valve, and raw material also can be 100% aluminium powder, and granularity is less than 45 microns;
2) reactant: ammoniacal liquor or liquid nitrogen, addition need add the ammoniacal liquor of 2-5 milliliter with every generation 1 gram aluminium nitride in the raw material or the liquid nitrogen ratio of 1-3 milliliter is determined ammonia concn 25-35 weight %.
Two, material formula: raw material+reactant
Three, mechanical alloying technical conditions: the material for preparing is gone into ball mill and is carried out the mechanical alloying processing
1) mechanical alloying time: 6-30 hour;
2) mechanical alloying rotating speed: 150-300 rev/min;
3) mechanical alloying ball: aluminium oxide ceramics ball or stainless steel ball;
4) ratio of grinding media to material: 1: 5 or 2: 3 or 3: 2.
Compare advantage and the good effect that is had with known technology:
By the high energy mechanical Alloying Treatment, improved the surface-active of aluminium in the powder, and made nitrogen in the ammoniacal liquor react to generate needed aluminium nitride with it.Because reaction is to carry out in the high energy mechanical alloying process, the aluminium surface-active is strong, easily form the aluminium nitride that needs, and the aluminium nitride that generates is inlayed in ma process enters into the higher metal dust of surface-active, form the composite metal powder of metal and aluminium nitride, the metal dust of this greater activity and newly-generated aluminium nitride are under the effect of high energy mechanical alloying, and the surface is fresh, easily form in conjunction with more firm metal and aluminium nitride composite powder.The nitrogen aluminum composite metal powder that is obtained by behind the compacting sintering, can obtain the nitride metal aluminium composite material of higher comprehensive performance again.
In addition, this preparation method, the content of aluminium nitride is finished in the process of mechanical alloying, is easy to adjust, and can prepare the nitride metal aluminium composite material that satisfies the different performance requirement.
(4) specific embodiment:
Embodiment one
By the aluminium powder of 0.7 weight % and the copper powder of 99.3 weight %, and 2ml/g ammoniacal liquor is material; And be that 2: 3, rotating speed are 150 commentaries on classics/min with ratio of grinding media to material, the time is to carry out mechanical alloying under 8 hours the condition to handle, ammonia concn is 35 weight %.
Embodiment two
By aluminium powder and the titanium valve of 80 weight % or the aluminium powder of 100 weight % of 20 weight %, and the 4ml/g liquid nitrogen is a raw material; And be that 1: 5, rotating speed are 280 commentaries on classics/min with ratio of grinding media to material, the time is to carry out mechanical alloying under 30 hours the condition to handle.
Embodiment three
By the copper-aluminium alloy powder of 100 weight % (wherein, aluminium account for weight alloy 40%) or the titanium-aluminium alloy powder (wherein, aluminium account for weight alloy 40%), and 3ml/g ammoniacal liquor is raw material; And be that 3: 2, rotating speed are 200 commentaries on classics/min with ratio of grinding media to material, the time is that 20 hours condition is carried out mechanical alloying and handled, ammonia concn is 25 weight %.
Claims (3)
1, a kind of preparation method of nitrogen aluminum composite metal powder, it is characterized in that: the prescription of this method is raw material+reactant, described raw material is a kind of in five kinds of alloyed powder, the aluminium powders of mixed powder, copper or the titanium of mixed powder, titanium valve and aluminium powder of copper powder and aluminium powder and aluminium, the percentage that aluminium element accounts for the alloy gross weight is 0.6-40%, and powder size is less than 45 microns; Described reactant is ammoniacal liquor or liquid nitrogen, and its addition is determined with ammoniacal liquor or 1-3ml liquid nitrogen that every generation 1 gram aluminium nitride in the raw material need add 2-5ml; Carry out mechanical alloying in the material adding ball mill for preparing and handle, the mechanical alloying time is 6-30 hour, and drum's speed of rotation is 150-300 rev/min, and the alloying ball is aluminium oxide ceramics ball or stainless steel ball, and ratio of grinding media to material is 1: 5 or 2: 3 or 3: 2.
2, the preparation method of nitrogen aluminum composite metal powder according to claim 1 is characterized in that: described ammonia concn is 25-35 weight %.
3, the preparation method of nitrogen aluminum composite metal powder according to claim 1 and 2 is characterized in that: adopt the high-energy ball milling jar to carry out mechanical alloying and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100795895A CN1283400C (en) | 2004-11-30 | 2004-11-30 | Process for preparing composite metal powder containing aluminium nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100795895A CN1283400C (en) | 2004-11-30 | 2004-11-30 | Process for preparing composite metal powder containing aluminium nitride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1616166A CN1616166A (en) | 2005-05-18 |
| CN1283400C true CN1283400C (en) | 2006-11-08 |
Family
ID=34765550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100795895A Expired - Fee Related CN1283400C (en) | 2004-11-30 | 2004-11-30 | Process for preparing composite metal powder containing aluminium nitride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283400C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794452A (en) * | 2011-05-24 | 2012-11-28 | 合肥旭阳铝颜料有限公司 | Preparation method of aluminum silver paste |
| CN107740018A (en) * | 2017-10-25 | 2018-02-27 | 宝鸡市金海源钛标准件制品有限公司 | A kind of preparation method of titanium matrix composite |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8795585B2 (en) * | 2006-12-05 | 2014-08-05 | The Boeing Company | Nanophase cryogenic-milled copper alloys and process |
| US8784728B2 (en) * | 2006-12-05 | 2014-07-22 | The Boeing Company | Micro-grained, cryogenic-milled copper alloys and process |
| CN110216292A (en) * | 2019-04-23 | 2019-09-10 | 宿迁正丰科技有限公司 | Utilize solid-state CO2Or liquid argon or liquid nitrogen cooling mechanical crushing prepare purification ultrafine titanium powder technique |
-
2004
- 2004-11-30 CN CNB2004100795895A patent/CN1283400C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794452A (en) * | 2011-05-24 | 2012-11-28 | 合肥旭阳铝颜料有限公司 | Preparation method of aluminum silver paste |
| CN107740018A (en) * | 2017-10-25 | 2018-02-27 | 宝鸡市金海源钛标准件制品有限公司 | A kind of preparation method of titanium matrix composite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1616166A (en) | 2005-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7164906B2 (en) | METHOD FOR PREPARATION OF METAL MATERIAL OR METAL COMPOSITE MATERIAL | |
| CN105803236B (en) | A kind of aluminum matrix composite of non-crystaline amorphous metal enhancing and preparation method thereof | |
| CN102260814B (en) | In situ nano TiC ceramic particle reinforced aluminum based composite material and preparation method thereof | |
| CN1267339A (en) | Titanium alloy based dispersion-strengthened composites | |
| CN110257684B (en) | Preparation process of FeCrCoMnNi high-entropy alloy-based composite material | |
| DE102008061024B4 (en) | A method of making TiB reinforced composite titanium alloy based components by powder metallurgy methods | |
| GU | Bulk Al/SiC nanocomposite prepared by ball milling and hot pressing method | |
| CN1644279A (en) | Preparation of warm pressed diffusing particle reinforced iron-based powder metallized composite materials | |
| CN106893881B (en) | A kind of method of zirconium oxide modified graphene enhancing magnesium-based composite material | |
| CN106799496B (en) | A kind of graphite and alusil alloy composite electron encapsulating material and preparation method thereof | |
| CN110042280B (en) | In-situ endogenous multiphase particle reinforced aluminum matrix composite material and preparation method thereof | |
| CN110273092A (en) | A kind of CoCrNi particle reinforced magnesium base compound material and preparation method thereof | |
| CN113957280B (en) | High-strength high-plasticity high-rigidity aluminum-based composite material and preparation method thereof | |
| CN1161483C (en) | High-strength in-situ Al-base composition | |
| CN112024872B (en) | Method for preparing composite powder for laser 3D printing by sol coating method | |
| CN108396166B (en) | A kind of preparation method of three-dimensional grapheme network structure high-strength abrasion-proof aluminum alloy | |
| CN1283400C (en) | Process for preparing composite metal powder containing aluminium nitride | |
| CN1924072A (en) | High-strength magnesium based composite material and preparation method thereof | |
| CN105385902B (en) | A kind of AlN and AlB2Particle enhanced aluminum-based composite material and preparation method thereof | |
| CN1141406C (en) | Process for preparing Cu-Al2O3 composition | |
| CN112410601B (en) | Preparation method of graphene-boron heterostructure titanium-based composite material | |
| CN117210727A (en) | Aluminum alloy powder containing in-situ authigenic submicron TiC (N) particles and application thereof | |
| CN112077307A (en) | Preparation method of 3D printing graphene-doped high-strength titanium alloy part | |
| CN114182127B (en) | High-performance in-situ reinforced titanium-based composite material and preparation process thereof | |
| CN1718815A (en) | Preparation method of aluminium base zirconium tungstate particle composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20091230 |