CN104294072B - A kind of fast preparation method of gradient hard alloy/cermet - Google Patents
A kind of fast preparation method of gradient hard alloy/cermet Download PDFInfo
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Abstract
A kind of fast preparation method of gradient hard alloy/cermet, it uses and takes quantitative WC, TiCN, TiC, TaC/NbC, Mo2C、VC、Cr2C3, several or whole elements in Co, Ni make raw material, be made into compound by a certain percentage, blank be made through ball milling sieving molding；Thermal source is made with 300MHz~8GHz frequency microwave media, makes to absorb microwave energy in blank, and adds a certain amount of thin nitrogen simultaneously and generation microwave plasma is ionized under microwave and completes to be rapidly heated and surfaces nitrided process；It, which overcomes traditional heating mode, needs longer time to heat up and insulation, could be formed needed for gradient-structure, and long preparation period, the defects of high energy consumption；It is widely used in the nitrogen treatment of the hard alloy and cermet with microwave absorbing property titaniferous.
Description
Technical field
The present invention relates to a kind of quick method for preparing high reliability gradient hard alloy/cermet, more particularly to one
The fast preparation method of gradient hard alloy/cermet of the kind based on microwave-microwave plasma mixture heating.
Background technology
The development of the development of machining, particularly high-speed cutting processing, the environment residing for cutter is more complicated, to bite
The obdurability and wearability of tool propose higher requirement.The mid-90 in last century, Nomura etc. (K.Tsuda,
A.Ikegaya,K.Isobe et al.Development of functionally graded sintered hard
materials[J],Powder Metallurgy,1996,39(4):Surface 296-300) is prepared for using diffusion technique
The Graded-structure Cemented Carbides of rich Emission in Cubic (TiCN, TiN), had both maintained the intensity of hard alloy, surface is possessed cube again
The wearability of phase, its cutting ability and TiC/TiCN/TiN/A12O3Multi-layer composite coatings are substantially suitable.The ladder of rich surface Emission in Cubic
The it is proposed of structure hard alloy is spent, makes material that there is the higher core of strength and toughness and the higher surface of wearability, solves well
Requirement of the development of modern cutting technology to cutter high intensity and high-wearing feature.(ChenLimin, the Walter such as Lengauer
Lengauer,Klaus Dreyer.Advances in modern nitrogen-containing hardmetals and
cermets[J],International Journal of Refractory Metals and Hard Materials,
2000,6(13):343-351；K.Dreyer,D.Kassel,H.-W.Daub et al.Functionallygraded
hardmetals and cermets:preparation,performance and production scale up[C],
2001,15th International Plansee Seminar, 768-783.) to diffusion in situ for rich surface Emission in Cubic
Mutually formation, metallurgical reaction, liquid phase forming temperature, degassing temperature and microstructure of functionally gradient hard material etc. are relatively
The research of system, and have rated its cutting ability.Chinese patent CN102134660A discloses a kind of function of rich surface Emission in Cubic
Gradient hard alloy and preparation method thereof, the method that its preparation process is also based on diffusion in situ.It is such to pass through diffused sheet in situ
Method prepares Graded-structure Cemented Carbides/cermet of rich surface Emission in Cubic, and its preparation efficiency and surface layer thickness are by heated
N diffusion rates influence in journey.It is used for the preparation method for preparing the functionally gradient cemented carbide of rich surface Emission in Cubic in above-mentioned document,
The heater meanses of use, are conventional nitrogen atmosphere sintering, and it passes through radiation, convection current, conduction using the heating of the calandrias such as graphite
Make it that material from outward appearance to inner essence heats up etc. mode, while the nitrogen of certain pressure is passed through in suitable temperature, time, this heating
There is heating in mode and soaking time is longer, and the time formed needed for gradient-structure is also longer, and manufacturing cycle is relatively also longer, energy
The defects of source consumption is higher.
The content of the invention
For the above situation, it is an object of the invention to provide a kind of ladder based on microwave-microwave plasma mixture heating
The fast preparation method of hard alloy/cermet is spent, it can realize the quick heating to blank, and easily controllable crystal grain is given birth to
It is long；And simple process is reliable, operation is easy, and production efficiency is high, and with short production cycle, capital input is few, economical and practical, efficiently section
Can, safety and sanitation, low consumption is cleaned, non-environmental-pollution, is easy to popularize.
To achieve these goals, a kind of fast preparation method of gradient hard alloy/cermet, it includes following step
Suddenly：
(I), dispensing, from WC, TiCN, TiC, TaC/NbC, Mo2C、VC、Cr2C3, several in Co and Ni or all make
Raw material is stand-by, and the mass percent of each raw material is as follows：
WC 10%~89%, TiCN 5%~51%, TiC 0~30%, Mo2C 0~15%, VC 0~2%, Cr2C3
0~2%,
TaC/NbC 0~10%, Co4%~15%, Ni 0~8%；
(II), raw material mixes, and takes above-mentioned several or whole raw materials uniformly to be mixed by mass percentage, stand-by；
(III), stand-by raw material tinning, default abrasive parameters；
(IV), mixed material sieves；
(V), into base；
(VI), sinter.
To achieve these goals, its further step is：
The ball mill that the raw mill of step (III) is selected is QM-1SP4 type ball mills；
The sphere diameter that the raw mill of step (III) is selected is the sintered carbide balls of Φ 5, and ratio of grinding media to material is 5~10：1；
The rotational speed of ball-mill that the raw mill of step (III) is selected is 250~300rpm, and Ball-milling Time is 60~150 hours；
The mixed material sieving of step (IV) is from the screen that sieve aperture is 200 mesh；
Being made into base for step (V) is that the mixed material after sieving is directly loadable into mould, under 300~350MPa pressure
Blank is made；
The sintering of step (VI) is：1. the blank of compression molding is loaded in MW-L0316HV high vacuum micro-wave ovens；It is 2. micro-
Ripple medium is 2.45GHz frequencies；3. extracting vacuum in body of heater out, vacuum is set to be not higher than 1 × 10-2Pa；4. starting microwave source, enter
Microwave-microwave plasma Hybrid Heating；
The microwave heating process of step (VI) be by preheat, be passed through gas, heating, insulation temperature control process are carried out；
The microwave heating process of step (VI) is by preheating 6~10 minutes, and 0.1 is passed through when temperature reaches 450~650 DEG C
~8 × 104Pa gases, insulation temperature control is carried out when being warming up to 1400~1500 DEG C, the insulation temperature control time is 5~30 minutes；
The microwave heating process of step (VI), the gas atmosphere being passed through are pure nitrogen gas or nitrogen and hydrogen or nitrogen and argon
Gas.
A kind of fast preparation method of gradient hard alloy/cermet of the present invention, it using take quantitative WC, TiCN,
TiC、TaC/NbC、Mo2C、VC、Cr2C3, several or whole elements in Co, Ni make raw material, be made into compound by a certain percentage,
Blank is made through ball milling-sieving-molding；Thermal source is made with 300MHz~8GHz frequency microwave media, inhales the oxide in blank
Microwave energy is received, and adds a certain amount of thin nitrogen simultaneously and generation microwave plasma is ionized under microwave and completes quickly to rise
Gentle surfaces nitrided process；It overcome traditional heating mode need longer time heat up and insulation, could be formed needed for
Gradient-structure, and long preparation period, the defects of high energy consumption.
Present invention beneficial effect caused compared with prior art：
(a) present invention combines microwave and microwave plasma Hybrid Heating, material is brought rapidly up in a short time, is formed
Fine and close blank, while make plasma source (nitrogen) participate in the course of reaction of material, using Ti and the high feature of N affinity,
Emission in Cubic (TiCN, TiN) is formed in material surface, so as to prepare gradient hard alloy/cermet material；
(b) present invention makees thermal source using 2.45GHz frequency microwave media, by microwave and gas after microwave kind is excited
The microwave plasma of generation heats rapidly blank, has reached energy-conservation, efficient purpose；
(c) present invention reduces conventional resistive stove heat needed for sintering time, and technique is simple, easy to operate, heating
Uniformly reliable, programming rate is fast, and sintering time is short, and equipment investment is few, with short production cycle, high-efficiency energy-saving pollution-free, it is easy to accomplish
Large-scale production, business potential is big, and market prospects are very considerable, great popularization.
It the composite can be widely applied to the nitrogen treatment of metal, ceramics and its mixture with microwave absorbing property.
The present invention is further detailed explanation with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the heating curve figure of embodiment 1 in the present invention.
Fig. 2 is the surface of embodiment 1 and the X-ray diffractogram in section in the present invention.
Fig. 3 is the scanning electron microscope diagram of the cross section of embodiment 1 in the present invention.
Embodiment
As shown in accompanying drawing, a kind of general principle of the fast preparation method of gradient hard alloy/cermet of the present invention：It
Using take quantitative tungsten carbide-WC, titanium carbonitride-TiCN, titanium carbide-TiC, ramet-TaC, niobium carbide-NbC, molybdenum carbide-
Mo2C, vanadium carbide-VC, chromium carbide-Cr2C3, cobalt-Co, several or whole elements/compounds in nickel-Ni make raw material, by quality
Than being made into mixed material, blank is made through ball milling-sieving-molding, heating process is entered by preheating, heating, insulation, temperature control process
OK；During heating, thermal source is made with 2.45GHz frequency microwave media, microwave preheating heating at initial stage is first carried out, when being heated to certain temperature
A certain amount of nitrogen is passed through when spending, it is ionized under microwave and produces microwave plasma and compound bulk material is risen rapidly
Temperature, the Nitrogen ion collision of highly ionized and impact compound body surface, and promote chemical reaction possessed by microwave
Feature, accelerate nitrogen-N and titanium carbide-TiC reaction, while being brought rapidly up chemical combination material, form the ladder of rich surface Emission in Cubic
Spend hard alloy/cermet material；Meanwhile microwave is a kind of body mode of heating in heating process, the densification of combination materials
Process is inside and outside while occurred；It is low that it overcomes the conventional heating methods thermal efficiency, time length, the unsound defect of agglomerated material, is
A kind of sintering technology of gradient hard alloy/cermet of great potential.
With reference to accompanying drawing, total embodiment of the invention.A kind of fast preparation method of gradient hard alloy/cermet,
2.45GHz frequency microwave medium stoves selected first heat, sinter thermal source, in mass ratio WC 10%~89%, and TiCN 5%~
51%, TiC 0~30%, Mo2C 0~15%, VC 0%~2%, Cr2C30%~2%, TaC/NbC 0~10%, Co
3%-15%, Ni 0%-8% percentage total amount, the ratio of TiCN and other additives is determined, then hard alloy/metal is made pottery
Porcelain is sufficiently mixed by ball milling, and mixture particle particle diameter is in normal distribution with 0.5~0.6 μm after ball milling, raw material by 5~
10：1 ratio of grinding media to material is fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, then sets ball milling and turns
Speed is 250~300rpm, if Ball-milling Time is 60~150 hours, takes the mixed material after ball milling to cross 200 mesh sieves, after sieving
Mixed material be put into mould, blank is made under 300~350MPa pressure；Blank enters microwave oven and is sintered, setting
Parameters in microwave preheating, heating, heating, insulating process, heating are reached early stage using absorption of the mixed material to microwave
Heat, and preheat 6~10 minutes simultaneously, when temperature is up to 450~650 DEG C, it is passed through 0.1~8 × 104Pa gases, increase microwave
Power, microwave plasma being produced, temperature is quickly raised to 1400~1500 DEG C, carries out being incubated temperature control 5~30 minutes after heating,
Then stop heating, allow material furnace cooling.
Referring to the drawings, a kind of fast preparation method of gradient metal ceramic, it using cermet as raw material, using microwave-
Microwave plasma mixture heats, and passes through the control of atmosphere, the gradient gold of the quick high reliability for preparing rich surface Emission in Cubic
Belong to ceramic material.With WC, TiCN, TiC, TaC/NbC, Mo2C、VC、Cr2C3, several in Co, Ni or all make raw material, by matter
Amount ratio is made into mixed material, and blank is made through ball milling-sieving-molding, then it is sintered finished product is made, its operating procedure is：
(I) quantitative TiCN, TiC, WC, Mo are taken2C、VC、Cr2C3, powder in TaC/NbC, Co, Ni, according to following
Mass ratio is made into raw material, stand-by；
WC 10%~89%, TiCN 5%~51%, TiC 0~30%, Mo2C 0~15%, VC 0%~2%,
Cr2C30%~2%, TaC/NbC 0~10%, Co4%~15%, Ni 0%~8%；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, ball
Material is than being 5~10：1, rotational speed of ball-mill is 250~300rpm, and Ball-milling Time is 60~150 hours；
(III) mixed material after ball milling is taken to sieve, sieve aperture is 200 mesh；
(IV) take the mixed material after sieving to be put into mould, blank is made under 300~350MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, microwave-medium is
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) heating process is carried out by preheating, heating, insulation, temperature control process；
(VII) preheat 6~10 minutes at room temperature, 0.1~8 × 10 are passed through when temperature reaches 450~650 DEG C4Pa gas
Body, make generation microwave plasma in micro-wave oven, insulation temperature control is carried out when being warming up to 1400~1500 DEG C, the insulation temperature control time is
5~30 minutes, gradient hard alloy/ceramic-metal combination was made in then furnace cooling.
With reference to following table, the percent mass proportioning component embodiment of each raw material is respectively in table.
Embodiment 1
(I) a certain amount of TiCN, WC, Mo are taken2C、NbC/TaC、Co、Ni、VC、Cr2C3, original is made into by 1 column component in table
Material, it is stand-by；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, if
Ratio of grinding media to material 10：1, rotational speed of ball-mill 250rpm, Ball-milling Time 90 hours；
(III) mixed material after ball milling is taken to cross 200 mesh sieves；
(IV) take the mixed material after sieving to be put into mould, blank is made under 300MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, if microwave-medium
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) preheat 7 minutes at room temperature, 6 × 10 are passed through when temperature reaches 500 DEG C4Pa nitrogen, make raw in micro-wave oven
Into microwave plasma, heating is taken 60 minutes, and insulation temperature control is carried out when being warming up to 1430 DEG C, is incubated temperature control 15 minutes, then
Gradient metal ceramic finished product is made in furnace cooling.
Embodiment 2
(I) a certain amount of WC, TiC, Co are taken, raw material is made into by 2 column components in table, it is stand-by；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, if
Ratio of grinding media to material 10：1, rotational speed of ball-mill 250rpm, Ball-milling Time 60 hours；
(III) mixed material after ball milling is taken to cross 200 mesh sieves；
(IV) take the mixed material after sieving to be put into mould, blank is made under 350MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, if microwave-medium
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) preheat 7 minutes at room temperature, 8 × 10 are passed through when temperature reaches 500 DEG C4Pa nitrogen, make raw in micro-wave oven
Into microwave plasma, insulation temperature control, insulation temperature control 30 minutes are carried out when being warming up to 1430 DEG C, gradient is made in then furnace cooling
Hard alloy finished product.
Embodiment 3
(I) a certain amount of WC, TiC, Co are taken, raw material is made into by 3 column components in table, it is stand-by；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, if
Ratio of grinding media to material 10：1, rotational speed of ball-mill 250rpm, Ball-milling Time 60 hours；
(III) mixed material after ball milling is taken to cross 200 mesh sieves；
(IV) take the mixed material after sieving to be put into mould, blank is made under 350MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, if microwave-medium
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) preheat 8 minutes at room temperature, 6 × 10 are passed through when temperature reaches 500 DEG C4Pa nitrogen, make raw in micro-wave oven
Into microwave plasma, insulation temperature control, insulation temperature control 20 minutes are carried out when being warming up to 1430 DEG C, gradient is made in then furnace cooling
Hard alloy finished product.
Embodiment 4
(I) a certain amount of TiCN, WC, Mo are taken2C, NbC/TaC, Co, Ni, raw material is made into by 4 column components in table, it is stand-by；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, if
Ratio of grinding media to material 10：1, rotational speed of ball-mill 250rpm, Ball-milling Time 90 hours；
(III) mixed material after ball milling is taken to cross 200 mesh sieves；
(IV) take the mixed material after sieving to be put into mould, blank is made under 300MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, if microwave-medium
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) preheat 8 minutes at room temperature, 6 × 10 are passed through when temperature reaches 500 DEG C4Pa nitrogen, make raw in micro-wave oven
Into microwave plasma, insulation temperature control, insulation temperature control 30 minutes are carried out when being warming up to 1430 DEG C, gradient is made in then furnace cooling
Hard alloy finished product.
Embodiment 5
(I) a certain amount of WC, TiC, Co are taken, raw material is made into by 5 column components in table, it is stand-by；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, if
Ratio of grinding media to material 10：1, rotational speed of ball-mill 250rpm, Ball-milling Time 90 hours；
(III) mixed material after ball milling is taken to cross 200 mesh sieves；
(IV) take the mixed material after sieving to be put into mould, blank is made under 300MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, if microwave-medium
2.45GHz frequencies, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then
Start microwave source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) preheat 8 minutes at room temperature, 8 × 10 are passed through when temperature reaches 500 DEG C4Pa nitrogen, make raw in micro-wave oven
Into microwave plasma, insulation temperature control, insulation temperature control 15 minutes are carried out when being warming up to 1430 DEG C, gradient is made in then furnace cooling
Hard alloy finished product.
It is only presently preferred embodiments of the present invention above, according to the above-mentioned design of the present invention, those skilled in the art are also
Can to this various modification can be adapted and conversion.For example, change of ball milling parameter, compacting pressure etc..However, similar this conversion and
Modification belongs to the essence of the present invention.
Claims (2)
1. a kind of fast preparation method of gradient hard alloy/cermet, it is using cermet as raw material, using microwave-micro-
Ripple plasma mixture heats, and passes through control climate, the quick high reliability gradient metal ceramic for preparing rich surface Emission in Cubic
Material；With WC, TiCN, TiC, TaC/NbC, Mo2C、VC、Cr2C3, several in Co, Ni or all make raw material, match somebody with somebody in mass ratio
Resulting mixture material, and through ball milling-sieving-molding, blank is made, then it is sintered finished product is made, its operating procedure is：
(I) quantitative WC, TiCN, TiC, Mo are taken2C、VC、Cr2C3, powder in TaC/NbC, Co, Ni, according to following mass ratio,
Raw material is made into, it is stand-by
WC 10%~89%, TiCN 5%~51%, TiC 0~30%, Mo2C 0~15%, VC 0%~2%, Cr2C30%~2%,
TaC/NbC 0~10%, Co4%~15%, Ni 0%~8%；
(II) stand-by raw material is taken to be fitted into QM-1SP4 type ball mill stainless steel jar mills, from the sintered carbide balls of Φ 5, ratio of grinding media to material
For 5~10：1, rotational speed of ball-mill is 250~300rpm, and Ball-milling Time is 60~150 hours；
(III) mixed material after ball milling is taken to sieve, sieve aperture is 200 mesh；
(IV) take the mixed material after sieving to be put into mould, blank is made under 300~350 MPa pressure；
(V) the above-mentioned blank through compression molding is taken to load in MW-L0316HV high vacuum micro-wave ovens, microwave-medium 2.45GHz
Frequency, mechanical pump, diffusion pump are opened successively, extract vacuum in body of heater out, vacuum is not higher than 1 × 10-2Pa, then start microwave
Source, into microwave-microwave plasma Hybrid Heating, sintering circuit；
(VI) heating process is carried out by preheating, heating, insulation, temperature control process；
(VII) preheat 6~10 minutes at room temperature, 0.1~8 × 10 are passed through when temperature reaches 450~650 DEG C4Pa gases, make
Generation microwave plasma in micro-wave oven, insulation temperature control is carried out when being warming up to 1400~1500 DEG C, the insulation temperature control time is 5~30
Minute, gradient hard alloy/ceramic-metal combination is made in then furnace cooling.
A kind of 2. fast preparation method of gradient hard alloy/cermet according to claim 1, it is characterised in that step
Suddenly it is pure nitrogen gas or nitrogen and hydrogen or nitrogen and argon gas that (VII), which is passed through gas,.
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| CN104878267A (en) * | 2015-05-29 | 2015-09-02 | 南京理工大学 | TiCN-base metal ceramic tool material and its microwave sintering process |
| CN104988373B (en) * | 2015-08-06 | 2017-08-08 | 广东工业大学 | A kind of case-hardened gradient hard alloy and preparation method thereof |
| CN105177390B (en) * | 2015-08-28 | 2017-03-22 | 北京科技大学 | Metal ceramics and preparation method thereof |
| CN105177388B (en) * | 2015-08-31 | 2017-11-24 | 重庆妙坤生物科技有限责任公司 | A kind of Hardmetal materials |
| CN107916357A (en) * | 2017-10-31 | 2018-04-17 | 自贡硬质合金有限责任公司 | A kind of gradient hard alloy of heterogeneous texture and preparation method thereof |
| CN107881389B (en) * | 2017-11-06 | 2019-06-25 | 株洲科力特新材料有限公司 | Ti (C, N) based ceramic metal and the preparation method for being used to prepare it |
| CN109972014A (en) * | 2017-12-28 | 2019-07-05 | 厦门钨业股份有限公司 | A kind of TiCN based ceramic metal |
| CN108467983A (en) * | 2018-03-07 | 2018-08-31 | 河源华盈科技有限公司 | Using submicron order TaC and Cr3C2Ti (C, the N) base metal-ceramic materials and preparation method of enhancing |
| CN108950342B (en) * | 2018-07-24 | 2020-09-01 | 三峡大学 | Ti (C, N) -based cermet and preparation method thereof |
| CN110195742B (en) * | 2019-05-28 | 2023-12-05 | 成都高新区正通特种材料厂 | Bearing made of high wear-resistant alloy material |
| CN110358960B (en) * | 2019-09-02 | 2021-02-19 | 中南大学 | Preparation method of high-strength and high-toughness Ti (C, N) -based metal ceramic |
| CN113355578A (en) * | 2021-06-10 | 2021-09-07 | 河南工业大学 | Preparation method of Ti (C, N) -based metal ceramic |
| CN115198157B (en) * | 2022-07-05 | 2023-04-07 | 哈尔滨工业大学 | Grain growth induced pressureless sintering ultra-fine grain Ti (C, N) -based cermet densification method |
| CN115198156B (en) * | 2022-07-05 | 2023-04-18 | 哈尔滨工业大学 | High-strength and high-toughness ultrafine-grained Ti (C, N) -based cermet and preparation method thereof |
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| CN101381233B (en) * | 2008-10-10 | 2011-05-11 | 湖南科技大学 | Microwave sintering of superfine grain base titanium carbonitride |
| CN102382997B (en) * | 2011-10-24 | 2013-02-27 | 中南大学 | Method for preparing WC-Co cemented carbide through microwave sintering |
| CN103695685B (en) * | 2013-12-26 | 2016-02-24 | 昆明理工大学 | A kind of microwave sintering reaction prepares the method for WC-Co hard alloy |
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