CN110590374A - MoSi prepared by Flashing method2Method for producing-SiC composite material - Google Patents

MoSi prepared by Flashing method2Method for producing-SiC composite material Download PDF

Info

Publication number
CN110590374A
CN110590374A CN201911033183.6A CN201911033183A CN110590374A CN 110590374 A CN110590374 A CN 110590374A CN 201911033183 A CN201911033183 A CN 201911033183A CN 110590374 A CN110590374 A CN 110590374A
Authority
CN
China
Prior art keywords
mosi
composite material
sic composite
phenolic resin
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.)
Pending
Application number
CN201911033183.6A
Other languages
Chinese (zh)
Inventor
张小立
曹文艳
段佳玮
王进才
李启泉
刘�英
裴海燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongyuan University of Technology
Original Assignee
Zhongyuan University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhongyuan University of Technology filed Critical Zhongyuan University of Technology
Priority to CN201911033183.6A priority Critical patent/CN110590374A/en
Publication of CN110590374A publication Critical patent/CN110590374A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/58085—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicides
    • C04B35/58092—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicides based on refractory metal silicides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/65—Reaction sintering of free metal- or free silicon-containing compositions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428—Silicon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/666—Applying a current during sintering, e.g. plasma sintering [SPS], electrical resistance heating or pulse electric current sintering [PECS]

Abstract

The invention provides a method for preparing MoSi by using a flash method2Method for producing-SiC composite materials from Mo and/or MoSi2C, Si and/or SiO2The mixture is pressed into tablets at the temperature of 500-1200 ℃ by using phenolic resin as a raw material, and low-temperature short-time sintering is carried out by using a flash method to obtain MoSi2-a SiC composite material. FS is associated with a substantial reduction in the time and temperature required for ceramming compared to conventional sintering processes, which means significant energy savings, cheaper equipment, and broader environmental benefits. The present invention and method may also be applied to the preparation of carbide ceramics, nitride ceramics, oxide ceramics and composite systems thereof, where controlling the non-oxidizing atmosphere is one of the key factors of the composite system FS.

Description

MoSi prepared by Flashing method2Method for producing-SiC composite material
Technical Field
The invention relates to MoSi2The field of preparation of-SiC composite materials, in particular to a method for preparing MoSi by using a Flashing method2-SiC composite material.
Background
Flashing, FS for short, was discovered in 2010 in the laboratory guided by professor R Raij by Colonna et al, university of Colorado, Border, Calif. FS typically at a particular starting combination of e-furnace temperatures, the material densifies in a very short time, typically ranging from seconds to minutes.
FS is essentially characterized by very rapid densification (approximately less than one minute or less) that occurs in a Flash Event (FE). Therefore, flash sintering can be defined as an electric field assisted sintering technology, and is characterized in that: rapid densification; a sudden drop in conductivity and a strong and bright light emission.
FS has many advantages over traditional sintering processes. One of the most obvious reasons is obviously linked to the considerable reduction in time and temperature required for ceramization, which means significant energy savings, cheaper equipment, and broader environmental benefits. The consolidation time is generally reduced from 1 to 3 orders of magnitude, from several hours in the traditional process to several seconds in flash sintering; the consolidation temperature is also significantly reduced (sometimes by about 1000 c). Another advantage of FS is that it is an unbalanced process, which is associated with extremely high heating rates and extremely short processing times. Thus, it is possible to sinter the metastable material or to avoid unnecessary phase changes.
Disclosure of Invention
The invention provides a method for preparing MoSi by using a Flashing method2Method for producing-SiC composite material using Mo, MoSi2、Si、C、SiO2The mixture is pressed into tablets at the temperature of 500-1200 ℃ and sintered at low temperature for short time by an FS method to obtain MoSi2-SiC composite material, the control of the non-oxidizing atmosphere being one of the key factors for the flash sintering of the composite material.
The technical scheme for realizing the invention is as follows:
MoSi prepared by Flashing method2Method for producing-SiC composite materials from Mo and/or MoSi2C, Si and/or SiO2Uniformly stirring phenolic resin serving as a raw material, tabletting and solidifying, applying current and voltage to a sample through conductive adhesive to perform low-temperature short-time sintering by a flash method to obtain MoSi2-a SiC composite material.
The weight parts of all the materials in the raw materials are respectively as follows: mo and/or MoSi224-45 parts of Si and/or SiO21.5-11.2 parts, C2-4.8 parts and phenolic resin 10-12 parts.
The preparation of MoSi by the Flashing method2The method for preparing the-SiC composite material comprises the following specific steps:
(1) mixing Mo and/or MoSi2Si and/or SiO2C, mixing with phenolic resin uniformly, and pressing into tablets;
(2) brushing conductive adhesive on the surface or the side of the pressed sheet in the step (1), bonding a lead, and curing at 110 ℃;
(3) heating to 500-1200 ℃ in a non-oxidizing atmosphere, and applying an electric field to the conducting wire;
(4) flash firing is carried out on the pressed sheet to obtain MoSi2-a SiC composite material.
The electric field current in the step (3) is 0.1-60A, and the flash time in the step (4) is 0.1-10 min.
The conductive adhesive is prepared from silicon carbide, phenolic resin and graphite conductive adhesive in a mass ratio of (0.5-1): (0.5-0.7): (0.3-1), mixing uniformly and grinding into paste.
The invention has the beneficial effects that: the invention can obtain MoSi with any phase composition2The SiC composite material realizes low-temperature short-time sintering, and is environment-friendly and energy-saving; the FS method can also be used for sintering nitride ceramics, carbide ceramics, oxide ceramic composite materials thereof and the like. The method greatly reduces the time and temperature required by ceramic formation, and has obvious energy-saving, cheaper equipment and wider environmental benefits.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Preparation of MoSi by Flashing method2-SiC composite material, comprising the following steps:
32 g of MoSi2Powder, 2.4 g C powder, 5.0g Si powder, the balance being 0.6g SiO2The powder is evenly mixed, then 12g of phenolic resin is added, after even stirring, the mixture is pressed into a wafer with the diameter of 12mm, and the wafer is solidified at 110 ℃.
The conductive adhesive is prepared from silicon carbide, phenolic resin and graphite conductive adhesive in a mass ratio of 0.5: 0.5: 0.3, mixing uniformly and grinding into paste.
Brushing self-made conductive adhesive on the edge of the wafer, and fixing the platinum wire on the edge. Then the sample is put into a tube furnace with the furnace temperature of 790 ℃, and argon is introduced for protection. A current of 50A was applied to the sample and after 2 minutes, the sample was sintered completely.
Example 2
Preparation of MoSi by Flashing method2-SiC composite material, comprising the following steps:
24 g of MoSi2The powder, 4.8 g C powder, 11.2g Si powder, were mixed homogeneously, then 10g phenolic resin was added, after stirring homogeneously, pressed into long strips with a diameter of 50 x 4 x 1mm and cured at 110 ℃.
The conductive adhesive is prepared from silicon carbide, phenolic resin and graphite conductive adhesive in a mass ratio of 1: 0.7: 1, mixing uniformly and grinding into paste.
And brushing carbon conductive adhesive on the edge of the pressing strip, and fixing the platinum wire on the edge. The sample was then placed in a tube furnace at 798 ℃ and argon was passed through the furnace for protection. A current of 0.1A was applied to the sample and after 10 minutes, the sample was sintered completely.
Example 3
Preparation of MoSi by Flashing method2-SThe method for preparing the iC composite material comprises the following steps:
45.0g of MoSi2The powder, 2g C powder and 1.5g Si powder were mixed uniformly, then 10g phenolic resin was added, after stirring uniformly, pressed into long pieces with a diameter of 50 x 4 x 1mm and cured at 110 ℃.
The conductive adhesive is prepared from silicon carbide, phenolic resin and graphite conductive adhesive in a mass ratio of 0.8: 0.6: 0.6, mixing evenly and grinding into paste.
And brushing a mixture of silicon carbide and phenolic resin on the edge of the pressing strip, and fixing the platinum wire on the edge. Then the sample is put into a tube furnace with the furnace temperature of 780 ℃ and argon is introduced for protection. The sample was subjected to a current of 60A and after 0.1 minute, the sample was completely sintered.
Example 4
Preparation of MoSi by Flashing method2-SiC composite material, comprising the following steps:
the preparation was carried out as in example 1, except that the sintering temperature was 500 ℃.
Example 5
Preparation of MoSi by Flashing method2-SiC composite material, comprising the following steps:
the preparation was carried out as in example 1, except that the sintering temperature was 1200 ℃.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. MoSi prepared by Flashing method2-SiC composite material, characterized in that: with Mo and/or MoSi2C, Si and/or SiO2Uniformly stirring phenolic resin serving as a raw material, tabletting and solidifying, applying current and voltage to a sample through conductive adhesive to perform low-temperature short-time sintering by a flash method to obtain MoSi2-a SiC composite material.
2. Preparation of MoSi by the Flashing process according to claim 12-SiA method of making a C composite, characterized by: the weight parts of all the materials in the raw materials are respectively as follows: mo and/or MoSi224-45 parts of Si and/or SiO21.5-11.2 parts, C2-4.8 parts and phenolic resin 10-12 parts.
3. Preparation of MoSi according to the Flashing process according to any of claims 1 to 22-a method for producing a SiC composite material, characterized in that the specific steps are as follows:
(1) mixing Mo and/or MoSi2Si and/or SiO2C, mixing with phenolic resin uniformly, and pressing into tablets;
(2) brushing conductive adhesive on the surface or the side of the pressed sheet in the step (1), bonding a lead, and curing at 110 ℃;
(3) heating to 500-1200 ℃ in a non-oxidizing atmosphere, and applying an electric field to the conducting wire;
(4) flash firing is carried out on the pressed sheet to obtain MoSi2-a SiC composite material.
4. Preparation of MoSi by the Flashing process according to claim 32-SiC composite material, characterized in that: the electric field current in the step (3) is 0.1-60A, and the flash time in the step (4) is 0.1-10 min.
5. Preparation of MoSi by the Flashing process according to claim 32-SiC composite material, characterized in that: the conductive adhesive is prepared from silicon carbide, phenolic resin and graphite conductive adhesive in a mass ratio of (0.5-1): (0.5-0.7): (0.3-1), mixing uniformly and grinding into paste.
CN201911033183.6A 2019-10-28 2019-10-28 MoSi prepared by Flashing method2Method for producing-SiC composite material Pending CN110590374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911033183.6A CN110590374A (en) 2019-10-28 2019-10-28 MoSi prepared by Flashing method2Method for producing-SiC composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911033183.6A CN110590374A (en) 2019-10-28 2019-10-28 MoSi prepared by Flashing method2Method for producing-SiC composite material

Publications (1)

Publication Number Publication Date
CN110590374A true CN110590374A (en) 2019-12-20

Family

ID=68851786

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911033183.6A Pending CN110590374A (en) 2019-10-28 2019-10-28 MoSi prepared by Flashing method2Method for producing-SiC composite material

Country Status (1)

Country Link
CN (1) CN110590374A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116547253A (en) * 2020-10-20 2023-08-04 赛峰集团陶瓷 Method for producing hollow parts from short-fiber-reinforced metal matrix or ceramic matrix composite materials

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463180A1 (en) * 1990-01-19 1992-01-02 Kabushiki Kaisha Kouransha Material generating heat by absorbing microwaves
CN101157556A (en) * 2007-09-26 2008-04-09 中南大学 Method for preparing nano SiC particle reinforced MoSi2 radical composite material by polymer cracking-reaction hot-pressing
CN102515770A (en) * 2011-11-25 2012-06-27 中原工学院 Method for preparing nano SiC reinforced MoSi2 composite material
CN105565816A (en) * 2015-12-12 2016-05-11 中原工学院 Preparation method of MoSi2/MoB/SiC three-phase ceramic
EP3138829A1 (en) * 2015-08-28 2017-03-08 Rolls-Royce High Temperature Composites Inc Ceramic matrix composite including silicon carbide fibers in a ceramic matrix comprising a max phase compound
CN106630974A (en) * 2016-11-25 2017-05-10 中国工程物理研究院材料研究所 Flash sintering method of low-temperature flash sintering ceramic and obtained ceramic and device thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463180A1 (en) * 1990-01-19 1992-01-02 Kabushiki Kaisha Kouransha Material generating heat by absorbing microwaves
CN101157556A (en) * 2007-09-26 2008-04-09 中南大学 Method for preparing nano SiC particle reinforced MoSi2 radical composite material by polymer cracking-reaction hot-pressing
CN102515770A (en) * 2011-11-25 2012-06-27 中原工学院 Method for preparing nano SiC reinforced MoSi2 composite material
EP3138829A1 (en) * 2015-08-28 2017-03-08 Rolls-Royce High Temperature Composites Inc Ceramic matrix composite including silicon carbide fibers in a ceramic matrix comprising a max phase compound
CN105565816A (en) * 2015-12-12 2016-05-11 中原工学院 Preparation method of MoSi2/MoB/SiC three-phase ceramic
CN106630974A (en) * 2016-11-25 2017-05-10 中国工程物理研究院材料研究所 Flash sintering method of low-temperature flash sintering ceramic and obtained ceramic and device thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
XIAOLI ZHANG等: "Electrical resistivity and microstructure of pressureless reactive sintered MoSi2–SiC composite", 《MATERIALS CHEMISTRY AND PHYSICS》 *
李子东等: "《实用胶粘技术》", 31 January 2007, 国防工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116547253A (en) * 2020-10-20 2023-08-04 赛峰集团陶瓷 Method for producing hollow parts from short-fiber-reinforced metal matrix or ceramic matrix composite materials

Similar Documents

Publication Publication Date Title
EP1351891B1 (en) Method for utilising a waste slurry from silicon wafer production
CN101050120A (en) Method for preparing bismuth ferrite based multifunctioanl oxide ceramic material
CN106205935B (en) A kind of amorphous state soft magnetism composite magnetic powder core and preparation method thereof
CN107082628A (en) A kind of porous ceramic support preparation method that raffinate is synthesized based on molecular screen membrane
CN105350294B (en) A kind of chopped carbon fiber of applying silicon carbide layer and preparation method thereof
CN110590374A (en) MoSi prepared by Flashing method2Method for producing-SiC composite material
EP0313382B1 (en) Process for making silicon nitride articles
KR101152628B1 (en) SiC/C composite powders and a high purity and high strength reaction bonded SiC using the same
CN102030535B (en) Preparation method of zirconium-nitride enhanced aluminum-oxynitride composite ceramic material
CN104973864B (en) A kind of preparation method and niobium oxide planar targets of niobium oxide planar targets
CN110590373A (en) MoSi prepared by Flashing method2Method for preparing-MoB-SiC three-phase composite material
CN105418056A (en) Iron tailing wear-resistant sand-based water permeable brick and fabrication method thereof
CN104671828B (en) A kind of dental zirconium oxide ceramic friction chemical method silicon coating system nano-silicon is coated with the preparation method of micro-hard abrasive
CN107778011A (en) A kind of preparation method of graphene composite SiC wood ceramics material
CN102942367B (en) Method for preparing heat resisting plate for processing of soft magnetic ferrite
JP4458692B2 (en) Composite material
JP3297547B2 (en) Method for producing silicon carbide sintered body
JP3097701B2 (en) Plastic magnet material and manufacturing method thereof
CN107954722B (en) Method for preparing Si3N4 gradient material through self-diffusion
CN107805071B (en) Preparation method of titanium-trialuminum-carbon-mullite composite ceramic with low glass wettability
CN109231961A (en) A kind of resistance to deformation is rapidly fired to fine earthenware blank and its preparation and application method
CN110120275A (en) A kind of Metal slurry and preparation method thereof of power battery hermetically sealed connector
JP3007732B2 (en) Silicon nitride-mixed oxide sintered body and method for producing the same
FR2755128A1 (en) Magnetic ceramic for microwave device
EP0026506A1 (en) A process for the preparation of shaped, electrically conductive articles from silicon powder, as well as shaped articles obtained by using this process

Legal Events

Date Code Title Description
PB01 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: 20191220