CN1178254A - High strength, high toughness and low specific weight hard composite materials - Google Patents
High strength, high toughness and low specific weight hard composite materials Download PDFInfo
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- CN1178254A CN1178254A CN 97109259 CN97109259A CN1178254A CN 1178254 A CN1178254 A CN 1178254A CN 97109259 CN97109259 CN 97109259 CN 97109259 A CN97109259 A CN 97109259A CN 1178254 A CN1178254 A CN 1178254A
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Abstract
A hard composition being able to bear high impact and large stress and with low specific weight contains such main components (Wt.%) as hard phase TiC(45-58) and metallic binding phase including Ni, Mo, Nb and Cr (42-55), and features high stregnth (its bend strength is 1300-1600 MPa), excellent impact toughness (its breaking toughness is 11-15 MPaM1/2) and low specific weight (6.2-6.5 g/cu.cm).
Description
The invention belongs to pottery and ceramic composite technical field thereof.
The present invention relates to a kind of high strength, high tenacity, low-gravity rigid composite material, this matrix material has the intensity height; Toughness is good, and is in light weight, has the characteristics of certain degree of hardness again.
Under some application conditions, require material to have high intensity, good toughness and hardness, need it to have low proportion again simultaneously.For example, used novel well cementation fastener in the petroleum drilling industry, should proportion little, can go out pit shaft with slurry oil etc. like this, influence further drilling well and be unlikely to stay the shaft bottom; Simultaneously, wish to have high intensity, anti-shear performance and good toughness again.
In this case, nearly all material does not possess these several performance requriementss simultaneously.Pure pottery and ceramic matric composite thereof, PZT etc. for example, although meeting the demands aspect hardness, proportion and the fracture toughness property, common intensity is lower, easily collapses the angle in the use, costs an arm and a leg; High cobalt series hard alloy can meet the demands aspect hardness, toughness and the intensity, but proportion is too big; Pure metal material and alloy then can not satisfy the requirement of intensity and proportion.
In existing TiC class mechanically resistant material, mainly developed the sintering metal of YN series, be characterized in when keeping certain intensity, emphasizing the high rigidity of material, but fracture toughness property generally is no more than IOMPa
, toughness is relatively poor.
United States Patent (USP) 3674443,3762919 has been reported a kind of TiC-Ni matrix material that is used for cutting tool, and its major ingredient is 80-97% (volume ratio) TiC, 3-20% (volume ratio) Ni, and adopts the heat pressing process moulding.The subject matter of this technology is the preparation cost height, and abnormal member is difficult to preparation, and has the shortcoming that toughness is poor, intensity is low on material property.The flat 2-66135 of Japanese Patent has provided a kind of low-gravity sintering metal, and its major ingredient is TiC, WC, TaC, NbC, reaches Ni, Co etc., and this material exists intensity low, the shortcoming of poor impact toughness.Chinese patent CN1079996A has reported the light hard alloy that a kind of hot-work is used, its major ingredient be TiC to add other carbide be the hard phase, Ni, Co etc. are the bonding phase, composition complexity, performance be difficult to control and manufacturing cost higher.
High strength provided by the present invention, high tenacity, low specific weight hard composite materials, its hard is made of single TiC, accounts for 45-58%, and bonding is made of Ni, Mo, Nb, Cr, accounts for 42-55%.
Selecting TiC mainly is that TiC proportion is little, in light weight as hard mutually, and TiC has better hardness and certain intensity simultaneously, provide required hardness in matrix material, and under the high level condition, the unlikely proportion of material that makes is excessive.In material was formed, TiC content must not be lower than 45wt%, otherwise material hardness decline can not be satisfied the requirement of material to resistance to abrasion, and material proportion also increases simultaneously.Optimum content is between 48-55wt%.If hard surpasses 58wt% mutually, the strength degradation of material then, fracture toughness property descends, and shock resistance is poor.
Metal bonding phase Ni helps improving the intensity of material, and its content is advisable at 26-35wt%.The adding of Mo mainly is the wettability of improving between Ni and the TiC, promotes the densification of material in sintering process, reduces porosity, improves the strength of materials and toughness.The adding of Mo simultaneously has the effect that suppresses the TiC grain growth.The Mo add-on is generally 8-16wt%.It mainly is the toughness that improves material that Nb adds, Nb forms (Ti, Nb) C sosoloid with TiC in high-temperature sintering process, this structure can reduce TiC fragility significantly, and and Ni (Mo) between better consistency is arranged, toughness of material is increased substantially.Nb content generally is no more than 2wt%.The adding of Cr mainly is the sintering temperature that reduces matrix material, and suppresses the TiC grain growth, helps promoting that the densification of material and flexible improve, and its addition content is generally 1-2wt%.
Rigid composite material of the present invention, its main chemical is: TiC:45-58wt% Ni:26-35wt% Mo:8-16wt% Nb:1-2wt% Cr:1-2wt%
The preparation of this material can adopt the synthetic dynamic heat pressing process of self propagating high temperature to prepare, and also can adopt traditional powder metallurgy technology.1. the synthetic dynamic heat pressing process of self propagating high temperature: batching: simple substance Ti powder, carbon black, Ni, Mo, Nb, Cr measure mixing separately: selected Wimet jar, abrasive material ball, dry mixed 24 hours.
Compacting and moulding: biased sample is packed in the self propagating high temperature synthetic mould, and it is synthetic to carry out self propagating high temperature, applies high pressure simultaneously, and whole process is lighted a fire by SHS, and---links such as burning is synthetic---dynamically hot pressing---cooling mould unloading constitute.Can get material sample behind the mould unloading.2. traditional powder metallurgical technique: batching: TiC, Ni, Mo, Nb measure separately, batch mixes: material by wet type mixing, the vacuum-drying moulding: twin shaft is to the compression molding sintering: vacuum sintering, is incubated 1-1.5 hour by temperature 1350-1450 ℃.Adopt material prescription provided by the invention, with the rigid composite material of above-mentioned prepared, density is 6.2-6.5g/cm
3, hardness is 82-85HRA, and flexural strength is 1300-1600MPa, and fracture toughness property is K
IC: 11-15MPa
Through the practical application examination, can satisfy the requirement of application conditions to material, obtained high cobalt series hard alloy and the incomparable effect of PZT stupalith.
Embodiment 1
46.4g Ti (200 order) 11.6g carbon black (＜O.01gm), 26g Ni (200 order), 13g Mo (200 order), 2g Nb (200 order), 1g Cr (200 order), ball milling 24 hours, the sample that mixes is pressed into former base, put into the self propagating high temperature synthetic mould, in 100 tons of direet-heating type thermocompressores, carry out the synthetic dynamic hot pressing of self propagating high temperature, can get closely knit composite sample after the cooling.Density of material 6.2g/cm
3, flexural strength 1380MPa, hardness 85HRA, fracture toughness property 11.2MPa
Embodiment 2
40g Ti (200 order) 10g carbon black (＜0.01pm), 31g Ni (200 order), 16g Mo (200 order), 2gNb (200 order), 1g Cr (200 order), ball milling 24 hours, the sample that mixes is pressed into former base, put into the self propagating high temperature synthetic mould, in 100 tons of direet-heating type thermocompressores, carry out the synthetic dynamic hot pressing of self propagating high temperature, can get closely knit composite sample after the cooling.Density of material 6.4g/cm
3, flexural strength 1510MPa, hardness 84HRA, fracture toughness property 13.2MPa
Embodiment 3
36g Ti (200 order) 9g.Carbon black (＜0.01 μ m), 36g Ni (200 order), 16g Mo (200 order), 2g Nb (200 order), 1g Cr (200 order), ball milling 24 hours, the sample that mixes is pressed into former base, put into the self propagating high temperature synthetic mould, in 100 tons of direet-heating type thermocompressores, carry out the synthetic dynamic hot pressing of self propagating high temperature, can get closely knit composite sample after the cooling.Density of material 6.5g/cm
3, flexural strength 1600MPa, hardness 82HRA, fracture toughness property 15MPa
Embodiment 4
58g TiC (mean particle size＜5 μ m), 26Ni (200 order), 13g Mo (200 order), 2g Nb (200 order), 1g Cr (200 order), ball milling 24 hours, behind the vacuum spray drying, the string 40 of packing into
MmTwin shaft in-molded to compacting, in vacuum induction formula sintering oven, burn freshwater mussel mentioned in ancient books then, sintering temperature 1350-1400 ℃, 1 hour time, can obtain fine and close rigid composite material.Density of material 6.2g/cm
3, flexural strength 1300MPa, hardness 85HRA, fracture toughness property 11MPa
Embodiment 5
50g TiC (mean particle size＜5 μ m), 31Ni (200 order), 16g Mo (200 order), 2g Nb (200 order), 1g Cr (200 order), ball milling 24 hours, behind the vacuum spray drying, φ 40 packs into
MmTwin shaft in-molded to compacting, sintering in vacuum induction formula sintering oven then, 1 hour time, can obtain fine and close rigid composite material by sintering temperature 1350-1400 ℃.Density of material 6.35g/cm
3, flexural strength 1480MPa, hardness 84HRA, fracture toughness property 12.5MPa
Embodiment 6
45g TiC (mean particle size＜μ m), 36Ni (200 order), 16g Mo (200 order), 2g Nb (200 order), 1g Cr (200 order), ball milling 24 hours, behind the vacuum spray drying, φ 40 packs into
MmTwin shaft in-molded to compacting, sintering in vacuum induction formula sintering oven then, 1 hour time, can obtain fine and close rigid composite material by sintering temperature 1350-1400 ℃.Density of material 6.5g/cm
3, flexural strength 1580MPa, hardness 82HRA, fracture toughness property 15MPa
Claims (2)
1. a high strength, high tenacity, low-gravity rigid composite material, the chemical constitution that it is characterized in that this material is hard phase TiC:45-58wt%, bonding phase Ni:26-35wt%, Mo:8-16wt%, Nb:1-2wt%, Cr:1-2wt%.
2. the forming method of a high strength, high tenacity, low-gravity mechanically resistant material is characterized in that selecting a kind of in the following method:
(1) the synthetic dynamic heat pressing process of self propagating high temperature:
Batching: simple substance Ti powder, carbon black, Ni, Mo, Nb, Cr measure separately
Mix: selected Wimet jar, abrasive material ball, dry mixed 24 hours.
Compacting and moulding: biased sample is packed in the self propagating high temperature synthetic mould, and it is synthetic to carry out self propagating high temperature, applies high pressure simultaneously, and whole process is lighted a fire by SHS, and---links such as burning is synthetic---dynamically hot pressing---cooling mould unloading constitute.Can get material sample behind the mould unloading.
(2) traditional powder metallurgical technique:
Batching: TiC, Ni, Mo, Nb measure separately, prepare burden
Mix: material by wet type mixing, vacuum-drying
Moulding: twin shaft is to compression molding
Sintering: vacuum sintering, is incubated 1-1.5 hour by temperature 1350-1450 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97109259 CN1178254A (en) | 1997-09-30 | 1997-09-30 | High strength, high toughness and low specific weight hard composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97109259 CN1178254A (en) | 1997-09-30 | 1997-09-30 | High strength, high toughness and low specific weight hard composite materials |
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| CN1178254A true CN1178254A (en) | 1998-04-08 |
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| CN 97109259 Pending CN1178254A (en) | 1997-09-30 | 1997-09-30 | High strength, high toughness and low specific weight hard composite materials |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880798A (en) * | 2010-06-09 | 2010-11-10 | 无锡爱斯特陶瓷复合材料有限公司 | Aluminium-based titanium carbide ceramic self-lubricating wear-resistant material |
| CN103540824A (en) * | 2013-10-21 | 2014-01-29 | 江门市楚材科技有限公司 | Cermet material |
| CN103556025A (en) * | 2013-10-21 | 2014-02-05 | 江门市楚材科技有限公司 | Metal ceramic material |
| CN104878381A (en) * | 2015-05-20 | 2015-09-02 | 仲恺农业工程学院 | Novel wear-resistant coating and preparation method thereof |
| CN107236890A (en) * | 2017-05-27 | 2017-10-10 | 陈国生 | A kind of concrete pump truck cheater plate and cut ring new material and preparation method thereof |
| CN108637338A (en) * | 2018-05-21 | 2018-10-12 | 浙江普菲特切削工具有限公司 | A kind of Strengthening and Toughening cermet material and the slotting cutter being made from it |
| CN110373593A (en) * | 2019-07-01 | 2019-10-25 | 南京理工大学 | A kind of titanium carbonitride based composite metal ceramic material microwave sintering process |
-
1997
- 1997-09-30 CN CN 97109259 patent/CN1178254A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880798A (en) * | 2010-06-09 | 2010-11-10 | 无锡爱斯特陶瓷复合材料有限公司 | Aluminium-based titanium carbide ceramic self-lubricating wear-resistant material |
| CN103540824A (en) * | 2013-10-21 | 2014-01-29 | 江门市楚材科技有限公司 | Cermet material |
| CN103556025A (en) * | 2013-10-21 | 2014-02-05 | 江门市楚材科技有限公司 | Metal ceramic material |
| CN103540824B (en) * | 2013-10-21 | 2015-11-18 | 江门市楚材科技有限公司 | A kind of cermet material |
| CN103556025B (en) * | 2013-10-21 | 2016-03-02 | 江门市楚材科技有限公司 | Cermet material |
| CN104878381A (en) * | 2015-05-20 | 2015-09-02 | 仲恺农业工程学院 | Novel wear-resistant coating and preparation method thereof |
| CN104878381B (en) * | 2015-05-20 | 2017-08-25 | 仲恺农业工程学院 | A kind of wear-resistant coating and preparation method thereof |
| CN107236890A (en) * | 2017-05-27 | 2017-10-10 | 陈国生 | A kind of concrete pump truck cheater plate and cut ring new material and preparation method thereof |
| CN108637338A (en) * | 2018-05-21 | 2018-10-12 | 浙江普菲特切削工具有限公司 | A kind of Strengthening and Toughening cermet material and the slotting cutter being made from it |
| CN110373593A (en) * | 2019-07-01 | 2019-10-25 | 南京理工大学 | A kind of titanium carbonitride based composite metal ceramic material microwave sintering process |
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