CN101775517A - Method for preparing TiC/Al2O3/Fe composite ceramic matrix composite material - Google Patents
Method for preparing TiC/Al2O3/Fe composite ceramic matrix composite material Download PDFInfo
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- CN101775517A CN101775517A CN200910182615A CN200910182615A CN101775517A CN 101775517 A CN101775517 A CN 101775517A CN 200910182615 A CN200910182615 A CN 200910182615A CN 200910182615 A CN200910182615 A CN 200910182615A CN 101775517 A CN101775517 A CN 101775517A
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- ceramic matrix
- al2o3
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- matrix composite
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Abstract
The invention relates to a method for preparing a TiC/Al2O3/Fe composite ceramic matrix composite material. The method comprises the following technical processes of: firstly, preparing Ti and C according to stoichiometric ratio and then granulating, preparing a thermit welding flux according to an equation of Fe2O3+2Al=Al2O3+2Fe+828.894 (kJ) by using a thermit reaction principle, sufficiently and uniformly mixing a mixture of the granulated titanium and graphite powder with the thermit welding flux according to a proportion, pressing into a precast block by using a hydraulic machine, fixing a die forging mold on the hydraulic machine, then placing the precast block, igniting the precast block at the lower part by using a resistance wire short circuit method so that the titanium powder and graphite as well as ferric oxide and aluminum are carried out the self-propagating reaction to generate liquid Fe, Al2O3 and TiC particles, carrying out the die forging in the solidification process of a TiC/Al2O3/Fe mixture, and enabling the mixture to crystallize under pressure so as to obtain the composite ceramic matrix composite material with high compactness. The TiC/Al2O3/Fe composite ceramic matrix composite material prepared by the method has low requirement on equipment and high compactness, and saves energy.
Description
(1) technical field
The present invention relates to a kind of high-compactness TiC/Al for preparing
2O
3The method of/Fe composite ceramic matrix composite material.Belong to the Materials Processing Engineering technical field.
(2) background technology
TiC/Al
2O
3/ Fe composite ceramic matrix composite material has high-melting-point, corrosion resistance, non-oxidizability, toughness and be widely used in high-temperature structural components, such as pyrogen igniter, high-temperature pipe and cutting tool etc. preferably.Adopt hot pressing and sintering technique to produce this material in the past.Existence is to the equipment requirement height, and the shortcoming such as waste energy.Press for a kind of energy-efficient novel process.Synthetic (SHS) technology of self propagating high temperature is a kind of self exothermic chemical reaction that utilizes, and (several seconds～tens seconds) finish material synthetic high-efficiency energy-saving technology in the short period of time.But, directly adopting this method synthetic materials, can only be loosened, the block material of porous or powder.Usually adopt the reaction hot-pressing technology to improve its compactness.Promptly just finish, when synthetic materials is in red heat, soft state, it is applied external pressure, to realize the material densification when the SHS reaction.The mode that applies of external force can be air pressure, hydraulic pressure, blast pressure and forging and pressing, mechanical mold pressing, hot rolling and hot extrude etc.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of low for equipment requirements, energy savings, the TiC/Al that density is high
2O
3The preparation method of/Fe composite ceramic matrix composite material.
The object of the present invention is achieved like this: a kind of TiC/Al
2O
3The preparation method of/Fe composite ceramic matrix composite material is characterized in that described method comprises following technical process: at first, according to the principle of Ti and the synthetic TiC of C reaction, Ti and C are pressed the rear granulation of atomic ratio preparation in 1: 1, recycling thermit reaction principle is pressed equation Fe
2O
3+ 2Al=Al
2O
3+ 2Fe+828.894 (kJ) prepares aluminum heat flux; to be pressed into prefabricated section with hydraulic press behind the mixture of already granulated titanium, graphite powder and the abundant mixing of aluminum heat flux in proportion again; stamp forging mould is fixed on the hydraulic press; put into then prefabricated section; adopt the resistance wire short-circuiting method to light prefabricated section in the bottom; make it that titanium valve and graphite and iron oxide and two kinds of self-propagating reactions of aluminium take place, generate liquid Fe, Al
2O
3With the TiC particle, at Fe/Al
2O
3Carry out die forging in the/TiC mixture process of setting, make its crystallization under pressure, thereby obtain the high-compactness composite ceramic matrix composite material.
The aluminum heat flux that the present invention relates to is with Fe
2O
3+ 2Al=Al
2O
3+ 2Fe+828.894 (kJ) thermit reaction equation is basic recipe, single or combination property requires different to elevated temperature strength, hardness, toughness, corrosion resistance, shock-resistant, thermal shock resistance etc. according to composite, add alloying element, adjust compound self-propagating reaction material prescription.
The prescription that self-propagating reaction can take place for the Ti that the present invention relates to and C is: both.Aluminium sesquioxide particle in the reaction product and titanium carbide granule hardness height, wear resistance is good.
What the present invention adopted is that multistage self-propagating reaction hot-pressing technique prepares TiC/Al
2O
3/ Fe composite ceramic matrix composite material the invention has the beneficial effects as follows:
1, energy-conservation: the reaction of aluminothermy and titanium carbide all belongs to self-propagating reaction, can make full use of the liberated heat of chemical reaction own, and temperature can reach 1500-4000 ℃ in building-up process;
2, efficient: no heat requirement is delivered to the process of material from the outside, speed of response is generally 0.1-20cm/s:
3, equipment is little, precision is high, quality is good: in building-up process, the fire front extreme temperatures can evaporate volatile impurity, thereby product is normally highly purified.Product has thixotropy in reacted for some time, good fluidity, and liquid forging densification device tonnage is little, the composite density height of densification, quality are good;
4, reduced cost: compare here the raw material that adopt with simple use titanium carbide material more cheap, and equipment is simple, energy saving technology, stock utilization height.
5, the ceramic high temperature performance of thermite reaction generation is outstanding, chemical stability is good, hardness is high, good toughness, is combined with the dominance of titanium carbide pottery simultaneously, and reaction is easier to control;
6, material can design: can be filler modified by adding, and make weld overlay materials have designability;
7, at Fe
2O
3With the rear liquid phase that generates of the mixed block reaction of Al powder, the density that has significantly improved material reaches and mutual bond strength.
8, the existence of TiC particle makes Al
2O
3Particle being evenly distributed in Fe.
(4) embodiment
The present invention relates to a kind of TiC/Al
2O
3The preparation method of/Fe composite ceramic matrix composite material, its typical embodiment is: at first, be that the titanium valve of 1: 1 proportioning preparation fully mixes with graphite powder by atomic ratio, to the powder granulation of mixing, press equation Fe then again
2O
3+ 2Al=Al
2O
3+ 2Fe+828.894 (kJ) is that 20-30 purpose aluminium powder and granularity fully are blended into aluminum heat flux less than 100 purpose brown iron oxides with granularity; the mixture that adds already granulated titanium, graphite powder; fully mixed 2～4 hours; make mixed-powder; adopt hydraulic press that mixed-powder is pressed into prefabricated section (50% solid density); and mould is fixed on the hydraulic press; in mould, put into prefabricated section; adopt the resistance wire short-circuiting method to light prefabricated section; make prefabricated section that two kinds of self-propagating reactions take place, generate molten iron and alundum (Al2O3) particle and titanium carbide granule.In iron/aluminium sesquioxide/titanium carbide ceramic mixture process of setting, carry out the densification pressurization, make its crystallization under pressure, thereby obtain high density composite.
Claims (2)
1. TiC/Al
2O
3The preparation method of/Fe composite ceramic matrix composite material, it is characterized in that described method comprises following technical process: at first, according to the principle of Ti and the synthetic TiC of C reaction, be the rear granulation of metering preparation in 1: 1 with Ti and C by atomic ratio, recycling thermit reaction principle is pressed equation Fe
2O
3+ 2Al=Al
2O
3+ 2Fe+828.894 (kJ) prepares aluminum heat flux; to be pressed into prefabricated section with hydraulic press behind the mixture of already granulated titanium, graphite powder and the abundant mixing of aluminum heat flux in proportion again; stamp forging mould is fixed on the hydraulic press; put into then prefabricated section; adopt the resistance wire short-circuiting method to light prefabricated section in the bottom; make it that titanium valve and graphite and iron oxide and two kinds of self-propagating reactions of aluminium take place, generate liquid Fe, Al
2O
3With the TiC particle, at Fe/Al
2O
3Carry out die forging in the/TiC mixture process of setting, make its crystallization under pressure, thereby obtain the high-compactness composite ceramic matrix composite material.
2. a kind of TiC/Al according to claim 1
2O
3The preparation method of/Fe composite ceramic matrix composite material is characterized in that described aluminum heat flux, with Fe
2O
3+ 2Al=Al
2O
3+ 2Fe+828.894 (kJ) thermit reaction equation is basic recipe, according to composite to elevated temperature strength, hardness, toughness, corrosion resistance, shock-resistantly require different with the single or combination property of thermal shock resistance, add alloying element, adjust compound self-propagating reaction material prescription.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182615XA CN101775517B (en) | 2009-09-18 | 2009-09-18 | Method for preparing TiC/Al2O3/Fe composite ceramic matrix composite material |
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|---|---|---|---|
| CN200910182615XA CN101775517B (en) | 2009-09-18 | 2009-09-18 | Method for preparing TiC/Al2O3/Fe composite ceramic matrix composite material |
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| Publication Number | Publication Date |
|---|---|
| CN101775517A true CN101775517A (en) | 2010-07-14 |
| CN101775517B CN101775517B (en) | 2012-07-18 |
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|---|---|---|---|
| CN200910182615XA Expired - Fee Related CN101775517B (en) | 2009-09-18 | 2009-09-18 | Method for preparing TiC/Al2O3/Fe composite ceramic matrix composite material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831212A (en) * | 2015-05-09 | 2015-08-12 | 安徽鼎恒再制造产业技术研究院有限公司 | Hard Fe-Al2O3-Mo material and preparation method thereof |
| CN114409406A (en) * | 2020-10-28 | 2022-04-29 | 中国科学院理化技术研究所 | B12(C,Si,B)3Preparation method of-SiC two-phase ceramic |
| CN114477996A (en) * | 2020-10-23 | 2022-05-13 | 中国科学院理化技术研究所 | Preparation method of barium titanate-based ceramic |
| CN116514573A (en) * | 2023-05-04 | 2023-08-01 | 深圳市博迪科技开发有限公司 | Preparation method of electromagnetic heating type hydroxyapatite-based porous ceramic atomization core |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043035C (en) * | 1993-06-22 | 1999-04-21 | 武汉工业大学 | Quick preparation of composite by self-spread high-temp. instantaneous stamping |
| CN1693499A (en) * | 2005-02-24 | 2005-11-09 | 太原理工大学 | Preparation method of high melting point gradient composite material |
| CN1762618A (en) * | 2005-05-31 | 2006-04-26 | 江苏法尔胜技术开发中心 | Preparation of ceramic coat die by static self-spreading method for ferrous metal semi-solid processing |
| CN101462879A (en) * | 2009-01-08 | 2009-06-24 | 江阴东大新材料研究院 | Method for forming ceramic coat on metallic surface by argon-arc welding assisted self-propagating |
-
2009
- 2009-09-18 CN CN200910182615XA patent/CN101775517B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831212A (en) * | 2015-05-09 | 2015-08-12 | 安徽鼎恒再制造产业技术研究院有限公司 | Hard Fe-Al2O3-Mo material and preparation method thereof |
| CN114477996A (en) * | 2020-10-23 | 2022-05-13 | 中国科学院理化技术研究所 | Preparation method of barium titanate-based ceramic |
| CN114409406A (en) * | 2020-10-28 | 2022-04-29 | 中国科学院理化技术研究所 | B12(C,Si,B)3Preparation method of-SiC two-phase ceramic |
| CN116514573A (en) * | 2023-05-04 | 2023-08-01 | 深圳市博迪科技开发有限公司 | Preparation method of electromagnetic heating type hydroxyapatite-based porous ceramic atomization core |
| CN116514573B (en) * | 2023-05-04 | 2024-04-02 | 深圳市博迪科技开发有限公司 | Preparation method of electromagnetic heating type hydroxyapatite-based porous ceramic atomization core |
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|---|---|
| CN101775517B (en) | 2012-07-18 |
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