CN1524972A - Preparation method of wolframium sintered body - Google Patents
Preparation method of wolframium sintered body Download PDFInfo
- Publication number
- CN1524972A CN1524972A CNA031271626A CN03127162A CN1524972A CN 1524972 A CN1524972 A CN 1524972A CN A031271626 A CNA031271626 A CN A031271626A CN 03127162 A CN03127162 A CN 03127162A CN 1524972 A CN1524972 A CN 1524972A
- Authority
- CN
- China
- Prior art keywords
- sintering
- less
- sintered body
- wolfram
- preparation
- 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.)
- Granted
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims description 7
- 238000005245 sintering Methods 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 4
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 3
- 239000010432 diamond Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 13
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000011825 aerospace material Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention relates to a process for preparing wolfram aluminum alloy sintered body comprises the steps of, selecting wolfram aluminum powdered alloy with particles less than 100 nanometer, loading into graphite mold, electrifying for heating under the condition of vacuum pressure intensity less than 1/100 MPa, applying bipolar voltage simultaneously, the sintering temperature being 1200 deg. C - 1600 deg. C, the pressure being 15-40 MPa, the sintering time being 5-60 minutes, the surface of the sintered body is polished by diamond grinding board, with the relative density being 95-99.8%. The process can be applied to prepare highly compact block-shaped wolfram-aluminum alloy.
Description
Technical field
The invention belongs to the preparation method of partinium sintered compact.
Background technology
Partinium is the emerging technology material of researchdevelopment in recent years, and it has both the high thermal resistance of tungsten and lightweight, the oxidation-resistance of aluminium, and (density of rich aluminium alloy can reach 4.2g/cm to make alloy have high hardness, high-temperature stability and lower density
3), developing into novel high rigidity, high strength, high temperature material that oxidation resistance temperature is high, will obtain to use aspect first-class at high-performance high-temperature structural material, aerospace material, electrical contact, high temperature heating element.
Powder metallurgy sintered is basic skills from powder preparation bulk alloy, because partinium possesses the high-melting-point of tungsten, performance such as high temperature resistant, general powder metallurgy process (as: normal pressure-sintered) is difficult to realize its high-compactness sintering.The research of partinium still is in the powder synthetic starting stage, and it mainly is in the lattice of method by the mechanical alloying tungsten that makes the solid solution of aluminium atom and (the seeing number of patent application 01129545.7) of alloying.Up to now, the research of the high dense sintering body of relevant this alloy of preparation does not still have report both at home and abroad.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of partinium sintered compact.
It is raw material less than the tungsten aluminium alloy powder of 100 nanometers that the present invention adopts granularity, adopts the vacuum heating-press sintering device, exerts pressure when applying temperature in the sintering process, impels combination, Cheng Jian between the particle, realizes the densification sintering of powder.Vacuum heating-press sintering not only can suppress particulate oxidation behavior in the sintering process, and can effectively improve plasticity and flowability under the powdered alloy high temperature, can guarantee the homogeneity that sintered compact shrinks in the sintering process by two-way pressurization again.This method can prepare high fine and close block partinium, and has characteristics such as technology is simple, easy to operate, sintering time is short.
The present invention selects the tungsten aluminium alloy powder of particle less than 100 nanometers, and structural formula is W
1-xAl
x, x=0.1-0.86, in its graphite jig of packing into, in vacuum pressure less than 10
-2Feed electric current under the MPa condition and heat, two ends pressurization simultaneously, sintering temperature is 1200 ℃-1600 ℃, and pressure 15-40MPa, sintering time are 5-60 minute, and the sintered compact surface is bright and clean with the diamond disk rubbing down, and relative density is 95-99.8%.
Sintered sample through X-ray powder diffraction as shown in Figure 1, Fig. 1 is W
0.5Al
0.5Sintered compact XRD figure spectrum is analyzed and is confirmed that partinium Stability Analysis of Structures and degree of crystallinity obviously improve, density measurement and scanning electron microscope analysis as shown in Figure 2, Fig. 2 is W
0.5Al
0.5The sintered compact cross-section morphology confirms gained sintered compact uniform microstructure, density height.
Embodiment
Embodiment 1: with weight is 35 grams, and granularity is less than the W of 100 nanometers
0.9Al
0.1Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1600 ℃, and pressure 40MPa, sintering time are 60 minutes.Sample is through after the polished finish, analytical test, and relative density is 98.2%, compressive strength is that 1730MPa, flexural strength are that 480Mpa, Young's modulus are that 60G Pa, microhardness are 720Hv.
Embodiment 2: with weight is 32 grams, and granularity is less than the W of 100 nanometers
0.8Al
0.2Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1500 ℃, and pressure 30MPa, sintering time are 45 minutes.Sample is through after the polished finish, analytical test, and relative density is 99.2%, compressive strength is that 1862MPa, flexural strength are that 493Mpa, Young's modulus are that 65G Pa, microhardness are 760Hv.
Embodiment 3: with weight is 30 grams, and granularity is less than the W of 100 nanometers
0.6Al
0.4Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1400 ℃, and pressure 30MPa, sintering time are 30 minutes.Sample is through after the polished finish, analytical test, and relative density is 99.5%, compressive strength is that 2043MPa, flexural strength are that 520Mpa, Young's modulus are that 50G Pa, microhardness are 778Hv.
Embodiment 4: with weight is 25 grams, and granularity is less than the W of 100 nanometers
0.5Al
0.5Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1300 ℃, and pressure 37.5MPa, sintering time are 25 minutes.Sample is through after the polished finish, analytical test, and relative density is 99.6%, compressive strength is that 2070MPa, flexural strength are that 570Mpa, Young's modulus are that 55G Pa, microhardness are 980Hv.Its XRD figure spectrum is seen accompanying drawing 1, and cross-section morphology is seen accompanying drawing 2.
Embodiment 5: with weight is 25 grams, and granularity is less than the W of 100 nanometers
0.4Al
0.6Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1300 ℃, and pressure 20MPa, sintering time are 20 minutes.Sample is through after the polished finish, analytical test, and relative density is 99.8%, compressive strength is that 2137MPa, flexural strength are that 583Mpa, Young's modulus are that 58G Pa, microhardness are 1026Hv.
Embodiment 6: with weight is 20 grams, and granularity is less than the W of 100 nanometers
0.25Al
0.75Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1200 ℃, and pressure 30MPa, sintering time are 10 minutes.Sample is through after the polished finish, analytical test, and relative density is 96.2%, compressive strength is that 2270MPa, flexural strength are that 489Mpa, Young's modulus are that 42G Pa, microhardness are 1086Hv.
Embodiment 7: with weight is 16 grams, and granularity is less than the W of 100 nanometers
0.14Al
0.86Powder is put into graphite jig, in vacuum pressure less than 10
-2Sintering under the MPa condition, sintering temperature are 1300C, and pressure 15MPa, sintering time are 5 minutes.Sample is through after the polished finish, analytical test, and relative density is 95.1%, compressive strength is that 1943MPa, flexural strength are that 412Mpa, Young's modulus are that 48G Pa, microhardness are 1135Hv.
Claims (1)
1. the preparation method of a partinium sintered compact is characterized in that selecting the tungsten aluminium alloy powder of particle less than 100 nanometers, and structural formula is W
1-xAl
x, x=0.1-0.86, in its graphite jig of packing into, in vacuum pressure less than 10
-2Feed electric current under the MPa condition and heat, two ends pressurization simultaneously, sintering temperature is 1200 ℃-1600 ℃, and pressure 15-40MPa, sintering time are 5-60 minute, and the sintered compact surface is bright and clean with the diamond disk rubbing down, and relative density is 95-99.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03127162 CN1208488C (en) | 2003-09-17 | 2003-09-17 | Preparation method of wolframium sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03127162 CN1208488C (en) | 2003-09-17 | 2003-09-17 | Preparation method of wolframium sintered body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1524972A true CN1524972A (en) | 2004-09-01 |
| CN1208488C CN1208488C (en) | 2005-06-29 |
Family
ID=34285990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03127162 Expired - Lifetime CN1208488C (en) | 2003-09-17 | 2003-09-17 | Preparation method of wolframium sintered body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1208488C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773983A (en) * | 2014-01-09 | 2014-05-07 | 安泰科技股份有限公司 | Tungsten-aluminum alloy and preparation method for same |
| CN105728719A (en) * | 2016-03-18 | 2016-07-06 | 北京科技大学 | Method for manufacturing high-thermal-conductivity copper-based electronic packaging substrate |
| CN109082549A (en) * | 2018-10-26 | 2018-12-25 | 北京理工大学 | A kind of preparation method of easy reacting aluminum/tungsten active material |
-
2003
- 2003-09-17 CN CN 03127162 patent/CN1208488C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773983A (en) * | 2014-01-09 | 2014-05-07 | 安泰科技股份有限公司 | Tungsten-aluminum alloy and preparation method for same |
| CN103773983B (en) * | 2014-01-09 | 2015-11-25 | 安泰科技股份有限公司 | Partinium and preparation method thereof |
| CN105728719A (en) * | 2016-03-18 | 2016-07-06 | 北京科技大学 | Method for manufacturing high-thermal-conductivity copper-based electronic packaging substrate |
| CN109082549A (en) * | 2018-10-26 | 2018-12-25 | 北京理工大学 | A kind of preparation method of easy reacting aluminum/tungsten active material |
| CN109082549B (en) * | 2018-10-26 | 2020-08-11 | 北京理工大学 | Preparation method of easy-reaction aluminum/tungsten active material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1208488C (en) | 2005-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Cu/Ti3SiC2 composite: a new electrofriction material | |
| CN110257684B (en) | Preparation process of FeCrCoMnNi high-entropy alloy-based composite material | |
| TW201302659A (en) | Bonded member of a metallic material and a ceramics-carbon composite material, method for manufacture thereof, carbon material bonded member, bonding material for a carbon material joined member, and method for making a carbon material bonded member | |
| CN109182856B (en) | A kind of AlN and MgB2Particle reinforced magnesium base compound material and preparation method thereof | |
| CN113292344A (en) | Preparation method of mullite whisker reinforced silicon carbide ceramic matrix composite material with in-situ growth | |
| CN111533558A (en) | Pure Ti3AlC2 powder, block or porous body and preparation method and application thereof | |
| CN110436928A (en) | High-performance nano twin boron carbide ceramics block materials and preparation method thereof | |
| WO2022089379A1 (en) | Silicon nitride/titanium carbide ceramic material preparation method based on spark plasma sintering | |
| Queipo et al. | Preparation of pitch-based carbon–copper composites for electrical applications | |
| CN1916201A (en) | Method for preparing composite material in symmetrical gradient between metallic material and ceramic material | |
| CN100347124C (en) | Preparation process of conducting aluminium oxide base nano ceramic material | |
| CN1208488C (en) | Preparation method of wolframium sintered body | |
| Allabergenov et al. | Investigation of electrophysical and mechanical characteristics of porous copper-carbon composite materials prepared by spark plasma sintering | |
| CN109320277B (en) | Preparation method of SiCnw/C nano composite material | |
| CN103693963A (en) | Ti3SiC2-TiC-graphene self-lubricating composite material and in situ synthesis preparation method thereof | |
| EP2146941A2 (en) | Boron suboxide composite material | |
| CN108329018B (en) | Toughened alumina composite ceramic and preparation method thereof | |
| CN100432253C (en) | Process for preporing auto-nano Al203/TiAl base composite material | |
| JP2022517022A (en) | Ultra-fine carbon powder and its manufacturing method and application | |
| CN1876876A (en) | Aluminium tungsten carbide hard alloy sintered body | |
| CN110699617B (en) | Preparation method of graphene and aluminum oxide whisker co-reinforced copper-based composite material and product thereof | |
| CN1022478C (en) | Reinforcing of carbon-ceramics composite material with flexibilizer for coystal whiskers | |
| CN115259874B (en) | Toughened and conductive MXene-zirconia composite ceramic and preparation method thereof | |
| JP2004035327A (en) | Nanostructured silicon carbide sintered compact and its production method | |
| CN107200586B (en) | TiB2Rapid preparation method of ceramic block |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU INSTITUTE OF ENERGY STORAGE MATERIALS + Free format text: FORMER OWNER: CHANGCHUN INST. OF APPLIED CHEMISTRY, CHINESE ACADEMY OF SCIENCES Effective date: 20120521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 130022 CHANGCHUN, JILIN PROVINCE TO: 213000 CHANGZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120521 Address after: Hohai road Changzhou City No. 9 213000 Patentee after: CHANGZHOU INSTITUTE OF ENERGY STORAGE MATERIALS & DEVICES Address before: 130022 Changchun people's street, Jilin, No. 5625 Patentee before: CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES |
|
| CX01 | Expiry of patent term |
Granted publication date: 20050629 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Hu Shiqi Document name: Notice of Termination of Patent Rights |
|
| DD01 | Delivery of document by public notice |