CN103482693B - The method that titanium source and carbon source prepare TiCN powder is respectively with tetrabutyl titanate and pitch - Google Patents
The method that titanium source and carbon source prepare TiCN powder is respectively with tetrabutyl titanate and pitch Download PDFInfo
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- CN103482693B CN103482693B CN201310449161.4A CN201310449161A CN103482693B CN 103482693 B CN103482693 B CN 103482693B CN 201310449161 A CN201310449161 A CN 201310449161A CN 103482693 B CN103482693 B CN 103482693B
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Abstract
The invention discloses and be a kind ofly respectively with tetrabutyl titanate and pitch the method that titanium source and carbon source prepare TiCN powder.Take tetrabutyl titanate and pitch according to mass ratio 1:5 ~ 8, first pitch is dissolved in dehydrated alcohol, and then add tetrabutyl titanate and be uniformly mixed, the mixed solution of obtained even in liquid phase mixing; Mixed solution at 80 ~ 150 DEG C dry 36 ~ 48 hours, obtained presoma; Presoma is heated to 1300 ~ 2000 DEG C under nitrogen atmosphere or ammonia dissolving atmosphere protection, is incubated and carries out carbothermic reduction and nitrogenize in 1 ~ 2 hour, i.e. obtained TiCN powder; The purity of described chemical reagent and raw material is technical grade and above purity; The composition of obtained powder controls by adding proportioning raw materials, and purity and granularity are determined jointly by order of addition(of ingredients) and preparation technology.The present invention has that raw material mixes, technique is simple, synthesis temperature is low, generated time is short and the feature such as energy-conserving and environment-protective.
Description
Technical field
The invention belongs to TiCN Preparation Technique of Powders field, be particularly a kind ofly respectively with tetrabutyl titanate and pitch the method that titanium source and carbon source prepare TiCN powder.
Background technology
TiCN has high-melting-point, high rigidity, high-wearing feature and the special feature such as functional, not only be widely used in the reinforcement etc. of grinding tool, cutting tool and matrix material, also be used widely as energy and material, and have a wide range of applications in new function material.
Superfine Ti CN powder is badly in need of in modern energy industrial development.Tradition TiO
2synthesize TiCN powder with high temperature reduction after carbon solid phase mixing, with low cost but preparation powder thicker; Current superfine Ti CN powder mainly with pure titanium, titanium organism or gaseous titanium compound for raw material, with the technique such as vapour deposition, plasma heating preparation, raw material and process costs high, make superfine Ti CN powder expensive.Investigation and application low cost prepares superfine Ti CN new technology highly significant.
The TiCN powder of current industrialization scale operation is mostly 2 ~ 5 μm, and along with modernization industrial expansion, the especially development of energy industry, increasing to the demand of ultrafine powder TiCN, superfine Ti CN has higher using value, has a extensive future.But existing market supply superfine Ti CN powder because raw materials cost and preparation technology's cost high and expensive.Therefore carry out the research that low cost prepares ultrafine powder TiCN and there is very large realistic meaning.
The preparation of superfine Ti CN powder is the focus of material supply section scholar research, the existing raw material aspect, aspect of research, also has process aspect.But diverse ways has its relative merits for suitability for industrialized production.
Direct carborization is with simple substance carbon, metallic titanium powder (or TiH
2) be raw material, at high temperature, in nitrogen-based atmosphere, the direct contact reacts of reactant generates TiCN, product purity is high, carbon metering than large, technological process is simple.But titanium valve is expensive, the preparation of purification ultrafine titanium powder is more difficult; Reaction process difficulty controls, and the TiCN synthesized needs further grinding broken, causes the purity drop of product, also will purify further, make this legal system obtain large-scale promotion for superfine Ti CN powder.
Carbothermic method is the traditional method of TiCN powder suitability for industrialized production.This technique is with TiO
2for titanium source, be C source with graphite, carbon black, activated carbon etc., under high temperature, nitrogen group protecting atmosphere, TiO
2tiCN powder is generated by C reduction.Advantage is: raw materials cost is low; Technique is simple, and production efficiency is higher; The granularity of TiCN is micron order.But raw material is poor by mechanically mixing homogeneity; TiCN is also easily oxidized.With regard to current production technology, the powder synthesized can not meet the requirement of fine ceramics completely in granularity and purity.
Also have some other method to prepare superfine Ti CN, but generally there is the high organic compound etc. as high pure metal titanium valve, titanium of ingredient requirement; Synthesis technique is complicated, and as needed heating plasma, microwave heating, vapour deposition etc., appointed condition requires the problems such as high, preparation method or complex process or output limited, cause cost high.The TiCN ultrafine powder technology of exploitation high-level efficiency, low cost, remains the emphasis of countries nowadays scientist and business circles research.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and be respectively with tetrabutyl titanate and pitch the method that titanium source and carbon source prepare TiCN powder.
Concrete steps are:
(1) take tetrabutyl titanate and pitch according to mass ratio 1:5 ~ 8, first pitch is dissolved in dehydrated alcohol, and then add tetrabutyl titanate and be uniformly mixed, the mixed solution of obtained even in liquid phase mixing.
(2) by mixed solution obtained for step (1) at 80 ~ 150 DEG C dry 36 ~ 48 hours, obtained presoma.
(3) presoma obtained for step (2) is heated to 1300 ~ 2000 DEG C under nitrogen atmosphere or ammonia dissolving atmosphere protection, is incubated and carries out carbothermic reduction and nitrogenize in 1 ~ 2 hour, be i.e. obtained TiCN powder.
The purity of described chemical reagent and raw material is technical grade and above purity.
The composition of the TiCN powder obtained by the present invention is by the burden control adding raw material, and the purity of powder and granularity are determined jointly by order of addition(of ingredients) and preparation technology.
The advantage of the inventive method:
(1) be carbon source with pitch, take tetrabutyl titanate as titanium source, through carbothermic reduction and nitrogenize, low cost prepares high-purity, superfine Ti CN.
(2), compared with the method preparing TiCN with tradition, have that raw material mixes, technique is simple, synthesis temperature is low, generated time is short and the feature such as energy-conserving and environment-protective.
Embodiment
embodiment:
(1) take 1 gram of tetrabutyl titanate and 7 grams of pitches, first pitch is dissolved in dehydrated alcohol, and then add tetrabutyl titanate and be uniformly mixed, the mixed solution of obtained even in liquid phase mixing.
(2) by obtained for step (1) mixed solution at 115 DEG C dry 42 hours, obtained presoma.
(3) presoma obtained for step (2) is heated to 1450 DEG C under ammonia dissolving atmosphere protection; be incubated and carry out carbothermic reduction and nitrogenize in 1 hour 45 minutes; i.e. obtained TiCN powder, gained TiCN powder is through the superfine Ti CN powder of testing graininess analysis to be particle diameter be 150 ~ 300 nanometers.
The purity of described chemical reagent and raw material is technical grade.
Claims (2)
1. prepare a method for TiCN powder, it is characterized in that concrete steps are:
(1) take tetrabutyl titanate and pitch according to mass ratio 1:5 ~ 8, first pitch is dissolved in dehydrated alcohol, and then add tetrabutyl titanate and be uniformly mixed, the mixed solution of obtained even in liquid phase mixing;
(2) by mixed solution obtained for step (1) at 80 ~ 150 DEG C dry 36 ~ 48 hours, obtained presoma;
(3) presoma obtained for step (2) is heated to 1300 ~ 2000 DEG C under nitrogen atmosphere or ammonia dissolving atmosphere protection, is incubated and carries out carbothermic reduction and nitrogenize in 1 ~ 2 hour, be i.e. obtained TiCN powder;
The purity of described chemical reagent and raw material is technical grade and above purity.
2. the method preparing TiCN powder according to claim 1, is characterized in that: the composition of obtained TiCN powder is by the burden control adding raw material, and the purity of powder and granularity are determined jointly by order of addition(of ingredients) and preparation technology.
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| CN201310449161.4A CN103482693B (en) | 2013-09-27 | 2013-09-27 | The method that titanium source and carbon source prepare TiCN powder is respectively with tetrabutyl titanate and pitch |
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| CN201310449161.4A CN103482693B (en) | 2013-09-27 | 2013-09-27 | The method that titanium source and carbon source prepare TiCN powder is respectively with tetrabutyl titanate and pitch |
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| CN103482693A CN103482693A (en) | 2014-01-01 |
| CN103482693B true CN103482693B (en) | 2015-09-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661524A (en) * | 1970-04-14 | 1972-05-09 | Ppg Industries Inc | Preparation of titanium carbide |
| CN101486462A (en) * | 2009-02-23 | 2009-07-22 | 潍坊学院 | Preparation of titanium carbide micro powder |
| CN103274409A (en) * | 2013-06-01 | 2013-09-04 | 桂林理工大学 | Method for preparing superfine TiC powder respectively by using TiOSO4 and phenolic resin as titanium source and carbon source |
| CN103274410A (en) * | 2013-06-16 | 2013-09-04 | 桂林理工大学 | TiC powder preparation method taking tetrabutyl titanate and pentaerythritol serving as titanium source and carbon source respectively |
-
2013
- 2013-09-27 CN CN201310449161.4A patent/CN103482693B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3661524A (en) * | 1970-04-14 | 1972-05-09 | Ppg Industries Inc | Preparation of titanium carbide |
| CN101486462A (en) * | 2009-02-23 | 2009-07-22 | 潍坊学院 | Preparation of titanium carbide micro powder |
| CN103274409A (en) * | 2013-06-01 | 2013-09-04 | 桂林理工大学 | Method for preparing superfine TiC powder respectively by using TiOSO4 and phenolic resin as titanium source and carbon source |
| CN103274410A (en) * | 2013-06-16 | 2013-09-04 | 桂林理工大学 | TiC powder preparation method taking tetrabutyl titanate and pentaerythritol serving as titanium source and carbon source respectively |
Non-Patent Citations (2)
| Title |
|---|
| 以酚醛树脂为碳源碳热还原制备TiC 的研究;李鹏飞等;《硅酸盐通报》;20121031;全文 * |
| 高钛渣提取碳氮化钛的研究;李慈颖等;《钢铁钒钛》;20060930;第7页右栏第2段以及第2.2节 * |
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