CN107805057A - A kind of Metal toughened ceramic base boule composite - Google Patents
A kind of Metal toughened ceramic base boule composite Download PDFInfo
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- CN107805057A CN107805057A CN201710948267.7A CN201710948267A CN107805057A CN 107805057 A CN107805057 A CN 107805057A CN 201710948267 A CN201710948267 A CN 201710948267A CN 107805057 A CN107805057 A CN 107805057A
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Abstract
The invention discloses a kind of Metal toughened ceramic base boule composite, raw material components and its mass ratio are vitrified bond：White fused alumina particle：Binding agent=1：5：0.3；Based on the vitrified bond in vitrified bond powder additional 2~8wt% Cu Fe alloy powders；The raw material components and its mass percentage content of the Cu Fe alloy powders are：30~90wt% of Cu, 10~70wt% of Fe；The raw material components and its mass percentage content of the basic vitrified bond are：50~71wt%SiO2, 10~20wt% boric acid, 3~10wt%Al2O3, 6~13wt%MgO；Raw material is mixed, is granulated, dry-pressing formed is base substrate, then base substrate is made into Metal toughened ceramic base boule composite in 700~950 DEG C of sintering.Cost of the present invention is cheap, technique is simple, high comprehensive performance, and its refractoriness is 697 DEG C, mobility 237%, intensity 73.48MPa.
Description
Technical field
The invention belongs to a kind of ceramic composition characterized by composition, the higher Metal toughened of more particularly to a kind of intensity
Ceramic base boule composite.
Background technology
Corundum hardness and fusing point are high, and thermal conductivity is high, and thermal capacitance is small, low thermal expansion, are a kind of extremely excellent hard of performance
Material, but diffusion coefficient is very low when corundum is burnt till, single corundum can not meet production requirement.Therefore, it is raw in industry
In production, typically by all kinds of bonding agents, such as metallic bond, resinoid bond, vitrified bond, by various modes just
Jade combines, to meet the needs of actual industrial production.Wherein, vitrified bond is shown with its suitable intensity and toughness
The advantages that writing the stomata of quantity, more and more it is applied in composite.Ceramic base boule composite is a kind of important
Composite, it is respectively provided with and is widely applied in each field of industry.
The extensive use of corundum grinding tool, higher requirement is proposed to the intensity of ceramic base boule composite.Ceramic junction
Mixture fragility is larger, how to carry out toughening modifying to vitrified bond, is to study both at home and abroad to improve the intensity of its composite
Focus.Domestic and international researcher is more to be carried by adding rare earth oxide or carrying out the modes such as fritting processing to carry out intensity
Rise, but cost is higher, and the additive types of addition are more, and the reaction between raw material is not easy control, influence the combination property of material.
The content of the invention
The purpose of the present invention, it is on the basis of existing technology, in the case where not influenceing other performances, further to improve
The intensity and combination property of ceramic base boule composite, the present invention do not carry out fritting processing to basic vitrified bond,
The rare earth metal or oxide of a large amount of costlinesses are not added, but selects the operating procedure of simple possible and raw material cheap and easy to get
The of a relatively high ceramic base boule composite of intensity is made.There is provided a kind of cost is cheap, technique is simple, high comprehensive performance,
The higher ceramic base boule composite of intensity.
The present invention is achieved by following technology.
A kind of Metal toughened ceramic base boule composite, raw material components and its mass ratio are：
10~20% vitrified bonds, 70~80% corundum in granules, 3~8% binding agents；
Based on the vitrified bond in vitrified bond powder additional 2~10wt% Cu-Fe alloy powders；
The raw material components and its mass percentage content of the Cu-Fe alloy powders are：30~90wt% of Cu, Fe 10~
70wt%；
The raw material components and its mass percentage content of the basic vitrified bond are：50~71wt%SiO2, 10~
20wt% boric acid, 3~10wt%Al2O3, 6~13wt%MgO；
The chemical formula of the vitrified bond is：SiO2—B2O3—Al2O3—MgO—Cu-Fe。
The preparation method of above-mentioned Metal toughened ceramic base boule composite, there are following steps：
(1) raw material components and its mass percentage content of Cu-Fe alloy powders are pressed：30~90wt% of Cu, Fe 10~
70wt% carries out dispensing, grinds 2 hours, sieving, obtains Cu-Fe alloy powders；
By the raw material components and its mass percentage content of basic vitrified bond：50~71wt%SiO2, 10~
20wt% boric acid, 3~10wt%Al2O3, 6~13wt%MgO carry out dispensing, melted under 1200~1300 DEG C of high temperature, wait to melt
Through water quenching, drying, grinding after cooling, basic vitrified bond is obtained；
2~8wt% Cu-Fe alloy powders are added in basic vitrified bond powder, vitrified bond is made；
(2) 10~20% vitrified bonds of step (1) are mixed with 70~80% corundum in granules and 3~8% binding agents,
Dry-pressing formed is base substrate；
(3) base substrate of step (2) is sintered in high temperature sintering furnace in 700~950 DEG C, room temperature natural cooling, pottery is made
Porcelain corundum composite.
The step (1) uses mechanical milling method, crosses 180 mesh sieves.
The additional mass percent content of the Cu-Fe alloys of the step (1) is 2wt%.
The bending strength of vitrified bond prepared by the step (1) is 70MPa~80MPa, and refractoriness is 680C~720
DEG C, mobility is 230%~252%.
The base substrate of the step (2) is rectangular strip, and size is 30mm × 6mm × 4mm.
The sintering schedule of the step (3) is：Less than 400 DEG C heating rates are 3~4 DEG C/min, in 350~400 DEG C of guarantors
60~90min of temperature；More than 400 DEG C heating rates are 4~6 DEG C/min, and 110~150min is incubated in 700~950 DEG C.
The invention provides the Metal toughened ceramics that a kind of cost is cheap, technique is simple, high comprehensive performance, intensity are higher
Corundum composite.In the composite when Cu-Fe alloy addition levels are 2wt%, its bending strength is 73.48MPa, resistance to
Fiery degree is 697 DEG C, mobility 237%.
Brief description of the drawings
Fig. 1 is the ESEM microscopic appearance figure that embodiment 1 adds 2wt.%Cu-Fe alloys；
Fig. 2 is the ESEM microscopic appearance figure that comparative example does not add Cu-Fe alloys.
Embodiment
The raw materials used present invention is commercially available industrial chemicals, and invention is made further with reference to specific embodiment
It is bright.
Embodiment 1
(1) 65 grams of SiO are weighed with electronic balance2, 18 grams of boric acid, 8 grams of Al2O3, 9 grams of MgO carry out dispensing, 1200~
Melted under 1300 DEG C of high temperature, through water quenching, drying, grinding after melting cools down, obtain basic vitrified bond；
0.4 gram of the Fe metal powders that granularity is 3.6 grams of the Cu metal powders of 100 mesh, 100 mesh are weighed with electronic balance, is put into and grinds
In alms bowl, grind 2 hours, cross 180 mesh sieves, obtain Cu-Fe alloy powders；
Cu-Fe alloy powders are added in basic vitrified bond powder, outer dosage is 2wt.%, obtains Ceramic bond
Agent；
(2) it is the ﹕ 0.3 of 1 ﹕ 5 according to the mass ratio of Tao porcelain Jie He Ji ﹕ corundum Ke Li ﹕ vitrified bondings, weighs vitrified bond
Mixed, be granulated with corundum in granules and vitrified bonding, then dry-pressing formed is base substrate；Base substrate size be 30mm × 6mm ×
4mm, briquetting pressure 150kN, dwell time are 15 to 30s；
(3) it is in 850 DEG C of sintering, temperature schedule in high temperature sintering furnace by base substrate：Less than 400 DEG C heating rates are 3 DEG C/
Min, 60min is incubated in 400 DEG C；400 DEG C to 850 DEG C heating rates are 4 DEG C/min, and 120min is incubated in 850 DEG C；Room temperature afterwards
Natural cooling, Metal toughened ceramic base boule composite is made.
The specific performance test methods of inventive article are：
Weigh the vitrified bond powder for taking 0.75g well prepared in advance, the dry-pressing formed cylinder for 8 × 8mm of diameter in the balance
Shape, pressure during shaping<50kN, the cylinder after shaping is positioned on clean smooth ceramic substrate, is put into sintering furnace,
Sintering schedule when being prepared by boule composite is heated, and its mean radius is measured after sample cooling, before and after sintering
Comparison foundation of the radius ratio as mobility.
Vitrified bond powder and dextrin liquid (dextrine powder adds water) are reconciled, are made fine and close pyrometric cone of prod cast, three
The length of side 8mm such as length of side 2mm, the bottoms such as the high 30mm of pyramid, upper bottom.After natural drying, pyrometric cone is fixed on frustum, with platform
Face keeps 80 °~82 ° inclinations angle, and the cone prepared is put into sintering furnace, and temperature when recording cone tip level is used as pottery
The refractoriness of porcelain bonding agent.
Bending strength test is carried out using three-point bending method, each sample is chosen 10 strips and tested, averaged
Obtain the bending strength of sample.
It is microcosmic that sample section is carried out using the corundum based composite ceramic material strip being broken after bending strength test
The observation of pattern.Strip is prepared into the sample that can be used for the observation of SEM microscopic appearance as requested, in electronic display
Observed under micro mirror, obtain the section SEM pictures of different amplification.
Fig. 1 is the composite section microscopic appearance figure of embodiment 1, it can be seen that is tied between vitrified bond and corundum in granules
Close all right, stomata is smaller and is evenly distributed, and bonding agent bridge is obvious and without notable stomata, two-phase interface unobvious, overall knot
Structure is dense, shows corundum in granules and the good interface bonding state of vitrified bond.
The correlated performance test result of embodiment 1 is：Bending strength 73.48MPa, refractoriness are 697 DEG C, and mobility is
237%.
Comparative example
Except not adding in embodiment 1 in addition to Cu-Fe alloys in comparative example, other processes and embodiment 1 are complete
It is identical.
Fig. 2 is comparative example composite section microscopic appearance figure, it can be seen that vitrified bond fails whole parcels
Corundum in granules, between stomata is larger and uneven, two-phase interface is obvious, has larger gap with Fig. 1.
The dependence test result of comparative example is：Bending strength 66.79MPa, refractoriness are 667 DEG C, and mobility is
228%.
Embodiment 2
In embodiment 2 in addition to Cu-Fe alloy addition levels are 4wt%, other processes are identical with example 1.
The dependence test result of embodiment 2 is：Bending strength 70.20MPa, refractoriness are 722 DEG C, mobility 254%.
Embodiment 3
Cu in Cu-Fe alloys is removed in embodiment 3：Fe is 3：Beyond 7, other processes are identical with example 1.
The dependence test result of embodiment 3 is：Bending strength 72.99MPa, refractoriness are 706 DEG C, mobility 236%.
Embodiment 4
Cu in Cu-Fe alloys is removed in embodiment 4：Fe is 3：7th, addition is other processes and example beyond 6wt%
1 is identical.
The dependence test result of embodiment 4 is：Bending strength 71.67MPa, refractoriness are 718.3 DEG C, and mobility is
223%.
Each raw material cited by the present invention, and the bound value of raw material, interval value can realize the present invention, then this is not
It is illustrated one by one.
Above example is only the exemplary description done to the present invention, it should explanation, is not departing from the present invention's
In the case of core, any simple deformation, modification or other skilled in the art can not spend creative work
Equivalent substitution each falls within protection scope of the present invention.
Claims (6)
1. a kind of Metal toughened ceramic base boule composite, raw material components and its mass ratio are：
10~20% vitrified bonds, 70~80% corundum in granules, 3~8% binding agents；
Based on the vitrified bond in vitrified bond powder additional 2~8wt% Cu-Fe alloy powders；
The raw material components and its mass percentage content of the Cu-Fe alloy powders are：30~90wt% of Cu, Fe 10~
70wt%；
The raw material components and its mass percentage content of the basic vitrified bond are：50~71wt%SiO2, 10~20wt%
Boric acid, 3~10wt%Al2O3, 6~13wt%MgO；
The chemical formula of the vitrified bond is：SiO2—B2O3—Al2O3—MgO—Cu-Fe。
The preparation method of above-mentioned Metal toughened ceramic base boule composite, there are following steps：
(1) raw material components and its mass percentage content of Cu-Fe alloy powders are pressed：30~90wt% of Cu, Fe 10~
70wt% carries out dispensing, grinds 2 hours, sieving, obtains Cu-Fe alloy powders；
By the raw material components and its mass percentage content of basic vitrified bond：50~71wt%SiO2, 10~20wt% boron
Acid, 3~10wt%Al2O3, 6~13wt%MgO carry out dispensing, melted under 1200~1300 DEG C of high temperature, after melting cool down after pass through
Water quenching, drying, grinding, obtain basic vitrified bond；
2~10wt% Cu-Fe alloy powders are added in basic vitrified bond powder, cermet mixed binding is made
Agent；
(2) 10~20% vitrified bonds of step (1) are mixed with 70~80% corundum in granules and 3~8% binding agents, dry-pressing
It is shaped to base substrate；
(3) base substrate of step (2) is increased in high temperature sintering furnace in 700~950 DEG C of sintering, room temperature natural cooling, obtained metal
Tough ceramic base boule composite.
A kind of 2. Metal toughened ceramic base boule composite according to claim 1, it is characterised in that the step
(1) mechanical milling method is used, crosses 180 mesh sieves.
A kind of 3. Metal toughened ceramic base boule composite according to claim 1, it is characterised in that the step
(1) the additional mass percent content of Cu-Fe alloys is 2%~10%.
A kind of 4. Metal toughened ceramic base boule composite according to claim 1, it is characterised in that the step
(1) bending strength of the vitrified bond prepared is 70MPa~80MPa, and refractoriness is 680 DEG C~720 DEG C, and mobility is
230%~252%.
A kind of 5. Metal toughened ceramic base boule composite according to claim 1, it is characterised in that the step
(2) base substrate is rectangular strip, and size is 30mm × 6mm × 4mm.
A kind of 6. Metal toughened ceramic base boule composite according to claim 1, it is characterised in that the step
(3) sintering schedule is：Less than 400 DEG C heating rates are 3~4 DEG C/min, and 60~90min is incubated in 350~400 DEG C；400℃
Above heating rate is 4~6 DEG C/min, and 110~150min is incubated in 700~950 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374134A (en) * | 2018-04-08 | 2018-08-07 | 南京信息工程大学 | A kind of Metal toughened ceramic matric composite and preparation method thereof |
| CN115819110A (en) * | 2022-12-16 | 2023-03-21 | 深圳市吉迩技术有限公司 | Metallized porous ceramic composite material and preparation method thereof |
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