CN105603231A - Graphene-modified copper alloy nano-material and preparation method thereof - Google Patents
Graphene-modified copper alloy nano-material and preparation method thereof Download PDFInfo
- Publication number
- CN105603231A CN105603231A CN201510894939.1A CN201510894939A CN105603231A CN 105603231 A CN105603231 A CN 105603231A CN 201510894939 A CN201510894939 A CN 201510894939A CN 105603231 A CN105603231 A CN 105603231A
- Authority
- CN
- China
- Prior art keywords
- graphene
- modified
- powder
- nano
- copper
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention provides a graphene-modified copper alloy nano-material. According to the invention, non-oxidation reductive intercalation and exfoliation technology and rapid spark plasma sintering (SPS) technology are employed, process parameters of the SPS technology are regulated and controlled, and high-precision-control processing and annealing equipment are utilized, so the graphene-modified copper alloy nano-material is prepared. The prepared graphene-modified copper alloy nano-material has the advantages of high thermal conductivity, high electrical conductivity, high wear resistance and high strength and has a wide application scope.
Description
Technical field
The present invention is specifically related to a kind of Graphene Modified Cu alloy nano-material and preparation method thereof.
Background technology
In order to obtain conduction and good heat conductivity, intensity is high and anti-wear performance is excellent copper or copper alloy, scientific circles have carried out widely and have studied with industrial circle both at home and abroad, and have developed: the high conductivity and strength alloys such as (1) copper chromium zirconium, copper nisiloy, copper iron phosphorus; (2) high-strength, the antifriction alloy such as manganese brass, aldubra, aluminium bronze; (3) conduction such as copper-composite tungsten material, copper-carbon composite, high-abrasive material. In recent years, along with commercial Application and scientific and technical fast development, the performance of copper and Cu alloy material is proposed to more more A: functional material utilizes the performance such as conduction, the heat conduction B of copper or copper alloy: structural material utilizes the mechanical property C of copper or copper alloy: high-abrasive material utilizes the rub resistance of copper or copper alloy and the high requirement of polishing machine, to adapt to more complicated environment for use and operating mode. The performances such as the intensity of each application of modern industry to copper and Cu alloy material, wear-resisting, conduction, heat conduction are had higher requirement, and research and develop a kind of high-strength, high conduction, high heat conduction, anti-wear performance excellent copper or Cu alloy material extremely urgent.
Graphene is the New Two Dimensional atomic crystal (thickness in monolayer is as 0.335 nanometer) that carbon atom forms taking the monoatomic layer of sp2 hydridization connection, its valence band is crossing at fermi level with conduction band, showing semi-conductive character and energy gap is zero, carrier presents a kind of dispersion relation of linearity at fermi level place, there is peculiar character: intensity reaches 130GPa, thermal conductivity is up to 5150J/ (mK), carrier mobility reaches 1.5 × 104cm2V-1s-1, transparency approximately 97.7%, specific area theoretical value is 2630m2/g, Young's modulus is about 1100GPa, fracture strength is about 125GPa. Graphene has broad application prospects in various fields such as electronic information, new forms of energy, new material, Aero-Space, defence and military and biological medicines, is expected to bring a series of revolutionary technological progresses. therefore since 2004 find, just caused global research boom. Rouff seminar in 2006 in " Nature " upper reported first Graphene/polymer composites, Kai in 2008 etc. have carried out adding the research work of graphene oxide reinforcement in PCL matrix, within 2011, the Wang Li of Harbin Institute of Technology east waits scientific research scholar to carry out series of studies to few layer graphene enhancing Cu-base composites, septic yanks' armament research and development and engineering center also once developed a kind of Graphene metal nano material, the researcher of Korea Advanced Institute of Science and Technology in 2013 creates the sandwich construction of metal and Graphene, the scientific research personnel such as the Yan Shaojiu of industry Hang Cai institute of Air China in 2014 have invented novel high-end alloy material-" alkene alloy ". nearly ten years, under global scientist and engineers and technicians' effort, the every field that is prepared into application from Graphene has all obtained great technological progress, has also obtained some breakthroughs taking grapheme material as each application industry on basis.
But still less about the report of the research of Graphene-metallic composite and application in the world at present, this respect, still in the starting stage, needs the deep work that conducts a research.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and has high heat conduction, high conduction, high abrasion, high-intensity advantage, and application is Graphene Modified Cu alloy nano-material and preparation method thereof widely.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of Graphene Modified Cu alloy nano-material, consists of the following composition: comprise Graphene 100-200 part, cupric oxide 20-50 part, carbon dust 24-36 part, tungsten powder 11-19 part, modified polyvinylalcohol 14-26 part, carbon nano-fiber 18-32 part, the fine 17-35 part of polypropylene, organic solution 150-250 part, iron powder 20-40 part, copper nanoparticle 50-100 part and nano silica fume 20-40 part by weight.
Another technical problem that the present invention will solve, for a kind of preparation method of Graphene Modified Cu alloy nano-material is provided, comprises the following steps:
1) prepare Graphene: prepare Graphene 100-200 part by intercalation-expansion-stripping method is controlled, regulate each technical parameter of intercalation, realize the control to the Graphene number of plies, make Graphene;
2) Graphene surface modification: get carbon dust 24-36 part, tungsten powder 11-19 part, modified polyvinylalcohol 14-26 part, carbon nano-fiber 18-32 part, the fine 17-35 part of polypropylene, organic solution 150-250 part, iron powder 20-40 part and nano silica fume 20-40 part Graphene surface is modified and pore-creating;
3) copper-graphite alkene powder preparation: cupric oxide 20-50 part is mixed with Graphene, and be ground into powder by grinder, make ultrapure thin powder by the mode of filtering screening subsequently;
4) SPS sintering: export By Impulsive Current by the pulse power and directly act on copper-graphite alkene powder, solid-phase sintering makes it produce compound layer or solid solution layer, and is together with each other, synthesizing graphite alkene Modified Cu alloy nano-material;
5) mixed powder-hot pressed sintering: copper nanoparticle 50-100 part is mixed with Graphene, and Graphene is heavily uniformly distributed at Graphene Modified Cu alloy Nanometer material, by hot pressed sintering frock, make the ingot blank of large-sized copper-graphite alkene composite;
6) processing and annealing: by the Strip of hot-rolling mill, roughing mill, middle milling train and finishing mill processing graphite alkene Modified Cu alloy nano-material; adopt the air-cushion type annealing furnace of filling with inert gas protection to heat-treat, adopt hydrolock high precision control extruder to prepare rod, the wire rod of Graphene Modified Cu alloy nano-material, adopt little working modulus, multi-pass processing technology to avoid the distributional pattern of Graphene Modified Cu alloy nano-material Graphene in pressure processing process to change as far as possible.
The invention has the beneficial effects as follows: by intercalation lift-off technology, repid discharge plasma sintering technique, the processing that regulates and controls SPS sintering process parameter and high accuracy control and the annealing device preparation of non-oxide reduction, can prepare there is high heat conduction, high conduction, high abrasion, high-intensity advantage, application is Graphene Modified Cu alloy nano-material widely.
Detailed description of the invention
Experimental example 1
A preparation method for Graphene Modified Cu alloy nano-material, comprises the following steps:
1) prepare Graphene: by controlled 100 parts of the Graphenes of preparing of intercalation-expansion-stripping method, regulate each technical parameter of intercalation, realize the control to the Graphene number of plies, make Graphene;
2) Graphene surface modification: get 20 parts of 24 parts of carbon dusts, 11 parts of tungsten powders, 14 parts of modified polyvinylalcohols, 18 parts of carbon nano-fibers, fine 17 parts of polypropylene, 150 parts of organic solutions, 20 parts of iron powders and nano silica fumes Graphene surface is modified and pore-creating;
3) copper-graphite alkene powder preparation: 20 parts of cupric oxide are mixed with Graphene, and be ground into powder by grinder, make ultrapure thin powder by the mode of filtering screening subsequently;
4) SPS sintering: export By Impulsive Current by the pulse power and directly act on copper-graphite alkene powder, solid-phase sintering makes it produce compound layer or solid solution layer, and is together with each other, synthesizing graphite alkene Modified Cu alloy nano-material;
5) mixed powder-hot pressed sintering: 50 parts of copper nanoparticles are mixed with Graphene, and Graphene is heavily uniformly distributed at Graphene Modified Cu alloy Nanometer material, by hot pressed sintering frock, make the ingot blank of large-sized copper-graphite alkene composite;
6) processing and annealing: by the Strip of hot-rolling mill, roughing mill, middle milling train and finishing mill processing graphite alkene Modified Cu alloy nano-material; adopt the air-cushion type annealing furnace of filling with inert gas protection to heat-treat, adopt hydrolock high precision control extruder to prepare rod, the wire rod of Graphene Modified Cu alloy nano-material, adopt little working modulus, multi-pass processing technology to avoid the distributional pattern of Graphene Modified Cu alloy nano-material Graphene in pressure processing process to change as far as possible.
Experimental example 2
A preparation method for Graphene Modified Cu alloy nano-material, comprises the following steps:
1) prepare Graphene: by controlled 200 parts of the Graphenes of preparing of intercalation-expansion-stripping method, regulate each technical parameter of intercalation, realize the control to the Graphene number of plies, make Graphene;
2) Graphene surface modification: get 40 parts of 36 parts of carbon dusts, 19 parts of tungsten powders, 26 parts of modified polyvinylalcohols, 32 parts of carbon nano-fibers, fine 35 parts of polypropylene, 250 parts of organic solutions, 40 parts of iron powders and nano silica fumes Graphene surface is modified and pore-creating;
3) copper-graphite alkene powder preparation: 50 parts of cupric oxide are mixed with Graphene, and be ground into powder by grinder, make ultrapure thin powder by the mode of filtering screening subsequently;
4) SPS sintering: export By Impulsive Current by the pulse power and directly act on copper-graphite alkene powder, solid-phase sintering makes it produce compound layer or solid solution layer, and is together with each other, synthesizing graphite alkene Modified Cu alloy nano-material;
5) mixed powder-hot pressed sintering: 100 parts of copper nanoparticles are mixed with Graphene, and Graphene is heavily uniformly distributed at Graphene Modified Cu alloy Nanometer material, by hot pressed sintering frock, make the ingot blank of large-sized copper-graphite alkene composite;
6) processing and annealing: by the Strip of hot-rolling mill, roughing mill, middle milling train and finishing mill processing graphite alkene Modified Cu alloy nano-material; adopt the air-cushion type annealing furnace of filling with inert gas protection to heat-treat, adopt hydrolock high precision control extruder to prepare rod, the wire rod of Graphene Modified Cu alloy nano-material, adopt little working modulus, multi-pass processing technology to avoid the distributional pattern of Graphene Modified Cu alloy nano-material Graphene in pressure processing process to change as far as possible.
Experimental example 3
A preparation method for Graphene Modified Cu alloy nano-material, comprises the following steps:
1) prepare Graphene: by controlled 150 parts of the Graphenes of preparing of intercalation-expansion-stripping method, regulate each technical parameter of intercalation, realize the control to the Graphene number of plies, make Graphene;
2) Graphene surface modification: get 30 parts of 30 parts of carbon dusts, 15 parts of tungsten powders, 20 parts of modified polyvinylalcohols, 25 parts of carbon nano-fibers, fine 28 parts of polypropylene, 200 parts of organic solutions, 30 parts of iron powders and nano silica fumes Graphene surface is modified and pore-creating;
3) copper-graphite alkene powder preparation: 35 parts of cupric oxide are mixed with Graphene, and be ground into powder by grinder, make ultrapure thin powder by the mode of filtering screening subsequently;
4) SPS sintering: export By Impulsive Current by the pulse power and directly act on copper-graphite alkene powder, solid-phase sintering makes it produce compound layer or solid solution layer, and is together with each other, synthesizing graphite alkene Modified Cu alloy nano-material;
5) mixed powder-hot pressed sintering: 75 parts of copper nanoparticles are mixed with Graphene, and Graphene is heavily uniformly distributed at Graphene Modified Cu alloy Nanometer material, by hot pressed sintering frock, make the ingot blank of large-sized copper-graphite alkene composite;
6) processing and annealing: by the Strip of hot-rolling mill, roughing mill, middle milling train and finishing mill processing graphite alkene Modified Cu alloy nano-material; adopt the air-cushion type annealing furnace of filling with inert gas protection to heat-treat, adopt hydrolock high precision control extruder to prepare rod, the wire rod of Graphene Modified Cu alloy nano-material, adopt little working modulus, multi-pass processing technology to avoid the distributional pattern of Graphene Modified Cu alloy nano-material Graphene in pressure processing process to change as far as possible.
Described SPS sintering technology and hot pressing and sintering technique, little working modulus, multi-pass processing method provide new Technology Ways for the preparation of Graphene Modified Cu alloy nano-material ingot blank.
Described Graphene Modified Cu alloy nano-material is applied to the modern industry fields such as Aero-Space, sophisticated and futuristic weapons system, high ferro technology, ocean engineering, power electronics, chip technology.
The invention has the beneficial effects as follows: by intercalation lift-off technology, repid discharge plasma sintering technique, the processing that regulates and controls SPS sintering process parameter and high accuracy control and the annealing device preparation of non-oxide reduction, can prepare there is high heat conduction, high conduction, high abrasion, high-intensity advantage, application is Graphene Modified Cu alloy nano-material widely.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement all should be encompassed in protection scope of the present invention.
Claims (2)
1. a Graphene Modified Cu alloy nano-material, is characterized in that, by weight by following compositionComposition: comprise Graphene 100-200 part, cupric oxide 20-50 part, carbon dust 24-36 part, tungsten powder 11-19Part, modified polyvinylalcohol 14-26 part, carbon nano-fiber 18-32 part, fine 17-35 part of polypropylene, organicSolution 150-250 part, iron powder 20-40 part, copper nanoparticle 50-100 part and nano silica fume 20-40 part.
2. a preparation method for Graphene Modified Cu alloy nano-material, is characterized in that, comprises following stepRapid:
1) prepare Graphene: prepare Graphene 100-200 part by intercalation-expansion-stripping method is controlled, regulateEach technical parameter of intercalation, realizes the control to the Graphene number of plies, makes Graphene;
2) Graphene surface modification: get carbon dust 24-36 part, tungsten powder 11-19 part, modified polyvinylalcohol 14-26Part, carbon nano-fiber 18-32 part, the fine 17-35 part of polypropylene, organic solution 150-250 part, iron powder 20-40Part and nano silica fume 20-40 part are modified and pore-creating Graphene surface;
3) copper-graphite alkene powder preparation: cupric oxide 20-50 part is mixed with Graphene, and by grinder incite somebody to actionIts grind into powder, makes ultrapure thin powder by the mode of filtering screening subsequently;
4) SPS sintering: export By Impulsive Current by the pulse power and directly act on copper-graphite alkene powder, solid phaseSintering makes it produce compound layer or solid solution layer, and is together with each other, synthesizing graphite alkene Modified Cu alloyNano material;
5) mixed powder-hot pressed sintering: copper nanoparticle 50-100 part is mixed with Graphene, and make graphiteAlkene is heavily uniformly distributed at Graphene Modified Cu alloy Nanometer material, by hot pressed sintering frock, makes large scaleThe ingot blank of copper-graphite alkene composite;
6) processing and annealing: by hot-rolling mill, roughing mill, middle milling train and finishing mill processing graphite alkene Modified CuThe Strip of alloy nano-material, adopts the air-cushion type annealing furnace of filling with inert gas protection to heat-treat, adoptPrepare rod, the wire rod of Graphene Modified Cu alloy nano-material with hydrolock high precision control extruder, adoptLittle working modulus, multi-pass processing technology avoid Graphene Modified Cu alloy nano-material in pressure processing mistake as far as possibleIn journey, the distributional pattern of Graphene changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894939.1A CN105603231A (en) | 2015-12-07 | 2015-12-07 | Graphene-modified copper alloy nano-material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894939.1A CN105603231A (en) | 2015-12-07 | 2015-12-07 | Graphene-modified copper alloy nano-material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105603231A true CN105603231A (en) | 2016-05-25 |
Family
ID=55983567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510894939.1A Pending CN105603231A (en) | 2015-12-07 | 2015-12-07 | Graphene-modified copper alloy nano-material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105603231A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082186A (en) * | 2016-06-12 | 2016-11-09 | 南京航空航天大学 | A kind of heat conduction thin film of graphene nano carbon/carbon-copper composite material and preparation method thereof |
| CN107201535A (en) * | 2017-04-17 | 2017-09-26 | 南昌大学 | A kind of method for preparing graphene/copper composite material using aerobic sintering |
| CN107236972A (en) * | 2017-04-17 | 2017-10-10 | 南昌大学 | A kind of method that utilization electrodeposition process prepares graphene/copper composite powder |
| CN111349810A (en) * | 2018-12-24 | 2020-06-30 | 有研工程技术研究院有限公司 | Graphene/copper composite wire and preparation method thereof |
| CN111705238A (en) * | 2020-07-20 | 2020-09-25 | 华东交通大学 | High-strength high-conductivity heat-resistant copper alloy material |
| CN111979438A (en) * | 2020-08-25 | 2020-11-24 | 西北有色金属研究院 | Method for improving interface bonding strength of graphene copper-based composite material |
| CN113913640A (en) * | 2021-09-17 | 2022-01-11 | 河海大学 | Copper alloy composite material and preparation method and application thereof |
| CN116287830A (en) * | 2023-03-31 | 2023-06-23 | 河源市凯源硬质合金股份有限公司 | High-strength tungsten copper alloy and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103403A (en) * | 2013-01-24 | 2013-05-15 | 西安交通大学 | Electronic packaging material |
| CN104032154A (en) * | 2014-06-27 | 2014-09-10 | 武汉大学 | Graphene/metal matrix composite material and preparation method thereof |
| CN104310388A (en) * | 2014-10-15 | 2015-01-28 | 宁波墨西科技有限公司 | Graphene composite powder material and preparation method thereof |
-
2015
- 2015-12-07 CN CN201510894939.1A patent/CN105603231A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103403A (en) * | 2013-01-24 | 2013-05-15 | 西安交通大学 | Electronic packaging material |
| CN104032154A (en) * | 2014-06-27 | 2014-09-10 | 武汉大学 | Graphene/metal matrix composite material and preparation method thereof |
| CN104310388A (en) * | 2014-10-15 | 2015-01-28 | 宁波墨西科技有限公司 | Graphene composite powder material and preparation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082186A (en) * | 2016-06-12 | 2016-11-09 | 南京航空航天大学 | A kind of heat conduction thin film of graphene nano carbon/carbon-copper composite material and preparation method thereof |
| CN107201535A (en) * | 2017-04-17 | 2017-09-26 | 南昌大学 | A kind of method for preparing graphene/copper composite material using aerobic sintering |
| CN107236972A (en) * | 2017-04-17 | 2017-10-10 | 南昌大学 | A kind of method that utilization electrodeposition process prepares graphene/copper composite powder |
| CN107236972B (en) * | 2017-04-17 | 2019-02-26 | 南昌大学 | A method of graphene/copper composite powder is prepared using electrodeposition process |
| CN111349810A (en) * | 2018-12-24 | 2020-06-30 | 有研工程技术研究院有限公司 | Graphene/copper composite wire and preparation method thereof |
| CN111349810B (en) * | 2018-12-24 | 2022-01-07 | 有研工程技术研究院有限公司 | Graphene/copper composite wire and preparation method thereof |
| CN111705238A (en) * | 2020-07-20 | 2020-09-25 | 华东交通大学 | High-strength high-conductivity heat-resistant copper alloy material |
| CN111979438A (en) * | 2020-08-25 | 2020-11-24 | 西北有色金属研究院 | Method for improving interface bonding strength of graphene copper-based composite material |
| CN113913640A (en) * | 2021-09-17 | 2022-01-11 | 河海大学 | Copper alloy composite material and preparation method and application thereof |
| CN116287830A (en) * | 2023-03-31 | 2023-06-23 | 河源市凯源硬质合金股份有限公司 | High-strength tungsten copper alloy and preparation method thereof |
| CN116287830B (en) * | 2023-03-31 | 2023-12-26 | 河源市凯源硬质合金股份有限公司 | High-strength tungsten copper alloy and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105603231A (en) | Graphene-modified copper alloy nano-material and preparation method thereof | |
| Dash et al. | Molten salt shielded synthesis of oxidation prone materials in air | |
| Zhao et al. | An overview of graphene and its derivatives reinforced metal matrix composites: Preparation, properties and applications | |
| CN103981393B (en) | Carbon nanotube-metal composite enhanced copper-based composite material and preparation method thereof | |
| EP3601162B1 (en) | A method for the manufacture of graphene oxide from kish graphite | |
| CN103789596A (en) | Polycrystalline cubic boron nitride cutter material and preparation method thereof | |
| CN103613389A (en) | Sintering preparation method of boron carbide ceramic | |
| CN102747243B (en) | Process for preparing grapheme modified hard alloy | |
| CN103691929A (en) | Industrial powder metallurgy tool and manufacturing method thereof | |
| Li et al. | Preparation of dense B4C ceramics by spark plasma sintering of high-purity nanoparticles | |
| CN110342943B (en) | Method for synthesizing binderless polycrystalline boron nitride block under industrial pressure and application thereof | |
| CN101712550A (en) | Cubic boron nitride superhard cutter | |
| CN103572163A (en) | Powder-metallurgy valve seat insert and preparation method thereof | |
| CN103586459A (en) | High-hardness and super abrasion-resistant powder metallurgy tool and manufacturing method thereof | |
| Cai et al. | Fabrication of three-dimensional graphene/Cu-Ag composites by in situ chemical vapor deposition and their properties | |
| Peng et al. | Preparation a nickel-aluminide bonded diamond tool by self-propagating high-temperature synthesis and strengthening by nickel-chromium-phosphorus alloy and copper | |
| CN103537693A (en) | Powder metallurgy abrasion-resistant bearing material and manufacturing method thereof | |
| CN113088763A (en) | Graphene/aluminum alloy composite material and preparation method thereof | |
| CN103602887B (en) | A kind of Powder metallurgy bit matrix and preparation method thereof | |
| CN105130439A (en) | High strength silicon carbide deck and production method thereof | |
| CN104120361B (en) | A kind of composite powder metallurgy material and preparation method thereof | |
| Mahdavi et al. | Synthesis and characterization of zirconium carbide nanorods at low temperature | |
| CN104070615A (en) | Solar silicon wafer linear cutting steel wire and manufacturing method thereof | |
| CN103691930B (en) | A kind of hard powder metallurgy alloy cutter and preparation method thereof | |
| US20120217436A1 (en) | Boron suboxide composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160525 |