CN105714287A - TiAl-based alloy high-temperature oxidation resistant coating and preparation method thereof - Google Patents
TiAl-based alloy high-temperature oxidation resistant coating and preparation method thereof Download PDFInfo
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- CN105714287A CN105714287A CN201610148554.5A CN201610148554A CN105714287A CN 105714287 A CN105714287 A CN 105714287A CN 201610148554 A CN201610148554 A CN 201610148554A CN 105714287 A CN105714287 A CN 105714287A
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- resistant coating
- oxidation resistant
- temperature oxidation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
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- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Abstract
The invention discloses a TiAl-based alloy high-temperature oxidation resistant coating and a preparation method thereof. The coating is prepared from SiO2, Na2O, CaO and Al2O3. The preparation method comprises the steps that all the components of the TiAl-based alloy high-temperature oxidation resistant coating are firstly taken according to the component proportion and heated to 1,300 DEG C-1,500 DEG C, and cooling is carried out after heat preservation; and then obtained high-temperature oxidation resistant coating raw materials are heated to be in a viscous state, a TiAl-based alloy is completely soaked in the coating raw materials in the viscous state, and the TiAl-based alloy can be obtained, wherein the high-temperature oxidation resistant coating is attached to the surface of the TiAl-based alloy. According to the TiAl-based alloy high-temperature oxidation resistant coating and the preparation method, the component ratio is reasonable, the production process is simple, operation and use are convenient, cost is low, and high-temperature oxidation of the TiAl-based alloy can be effectively avoided; and the high temperature deformation capacity of the TiAl-based alloy is not influenced, and the TiAl-based alloy is suitable for industrial application.
Description
Technical field
The present invention relates to metal oxidation resistance coatings art, be specifically related to a kind of TiAl-base alloy high-temperature oxidation resistant coating and preparation method thereof.
Background technology
The research and development of advanced material and application are always up the foundation stone of development in science and technology and social progress, in recent years, Aero-Space, auto industry achieve development at full speed, and advanced Aero-Space high performance structures material should meet following condition: low-density, high specific strength and specific stiffness, good high-temperature oxidation resistance.
TiAl-base alloy has high specific strength, specific stiffness and low-density, and good high-temperature oxidation resistant, creep-resistant property, it it is the very potential lightweight high-temperature structural material of one, in Aero-Space, the industrial circles such as automobile making have broad application prospects, in recent years, although the correlational study work of TiAl-base alloy has been achieved for sizable breakthrough, but also have many difficult problems to need to solve as early as possible on the road that the through engineering approaches realizing such alloy is applied, such as when temperature is more than 800 DEG C, TiAl-base alloy just faces the problem that antioxygenic property is not enough, and the hot-working of TiAl-base alloy and heat treatment are all between 900 DEG C～1300 DEG C, therefore, prevent the TiAl-base alloy oxidation behavior when high-temperature process, the exploitation of alloy and application have great importance.At present, antioxidation method when having the TiAl-base alloy high temperature deformation of a lot of scholar's research and heat treatment both at home and abroad, mainly through using special jacket to realize, but, use sheathing process process CIMS complicated, processing jacket and evacuation relatively costly, and in the course of processing, due to deformation and the discordance of TiAl-base alloy deformation of jacket, cause TiAl-base alloy deformation uneven and crack defect easily occurs, meanwhile, after deformation, jacket is relatively difficult with separating of alloy.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art and provide that a kind of reasonable mixture ratio of components, production technology are simple, easy for operation, cost is low, can effectively prevent TiAl-base alloy high-temperature oxydation, do not affect TiAl-base alloy high temperature deformation ability, the TiAl-base alloy high-temperature oxidation resistant coating of coating and matrix convenient separation at normal temperatures and preparation method thereof.
Technical scheme is as follows:
A kind of TiAl-base alloy high-temperature oxidation resistant coating, is made up of the component of following mass percent:
SiO250%～80%；
Na2O5%～30%；
CaO5%～30%；
Al2O35%～10%.
Preferably, TiAl-base alloy high-temperature oxidation resistant coating, it is made up of the component of following mass percent:
SiO260%～75%；
Na2O10%～20%；
CaO10%～20%；
Al2O37%～9%.
Preferably, TiAl-base alloy high-temperature oxidation resistant coating, it is made up of the component of following mass percent:
SiO262%；
Na2O15%；
CaO15%；
Al2O38%.
The preparation method of a kind of TiAl-base alloy high-temperature oxidation resistant coating, comprises the following steps:
(1) taking each component of TiAl-base alloy high-temperature oxidation resistant coating, mix in proportion, heating, to 1300 DEG C～1500 DEG C, is incubated 6h～8h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；
(2) by the viscous state of step (1) gained high-temperature oxidation resistant coating heating raw materials to 1100 DEG C～1300 DEG C, then, TiAl-base alloy is fully immersed in the coating material of viscous state, the surface TiAl-base alloy with high-temperature oxidation resistant coating can be obtained.
Preferably, in step (1), heating-up temperature is 1400 DEG C, and temperature retention time is insulation 6h.
Preferably, in step (2), heating-up temperature is 1200 DEG C.
TiAl-base alloy can be carried out effective anti-oxidation protection under condition by the ORC prepared by said method below 1300 DEG C.Being fully immersed in the coating material of viscous state by TiAl-base alloy, TiAl-base alloy and air can effectively be kept apart by ORC, it is possible to effectively prevent TiAl-base alloy oxidized under high-temperature heat treatment and deformation condition.
Advantages of the present invention mainly has: (1) is easier than traditional TiAl-base alloy high-temperature oxidation resistant method carries out, and implementing process is simple, and technical difficulty is low, and process implementing cost is low；(2) low raw-material cost adopted, repeatable utilization, high financial profit；(3) ORC at high temperature will not corrode TiAl-base alloy, it is not destroyed and pollutes；(4) after TiAl-base alloy high-temperature process, in the process of cooling, due to the difference of ORC and the TiAl-base alloy coefficient of expansion, ORC meeting Automatic-falling, ORC is removed easy.
In sum, instant component reasonable mixture ratio, production technology are simple, easy for operation, cost is low, can effectively prevent TiAl-base alloy high-temperature oxydation, do not affect TiAl-base alloy high temperature deformation ability, coating and matrix convenient separation at normal temperatures, effectively overcome jacket after prior art makes TiAl-base alloy deform uneven, crackle easily occur defect and deformation and separate relatively difficult drawback with alloy, be suitable to industrial applications.
Detailed description of the invention
Below by specific embodiment, the present invention is further described in detail, but is not limited to this.
Embodiment 1
By mass percent by SiO280%, Na2O5%, CaO5%, Al2O310% mix homogeneously, heating, to 1300 DEG C, is incubated 6h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1100 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.007mg/cm2。
Embodiment 2
By mass percent by SiO250%, Na2O30%, CaO15%, Al2O35% mix homogeneously, heating, to 1500 DEG C, is incubated 8h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1300 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.006mg/cm2。
Embodiment 3
By mass percent by SiO250%, Na2O13%, CaO30%, Al2O37% mix homogeneously, heating, to 1400 DEG C, is incubated 6h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1200 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.006mg/cm2。
Embodiment 4
By mass percent by SiO271%, Na2O10%, CaO10%, Al2O39% mix homogeneously, heating, to 1350 DEG C, is incubated 7h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1150 DEG C DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.005mg/cm2。
Embodiment 5
By mass percent by SiO275%, Na2O14%, CaO5%, Al2O36% mix homogeneously, heating, to 1450 DEG C, is incubated 7h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1250 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.008mg/cm2。
Embodiment 6
By mass percent by SiO250%, Na2O20%, CaO20%, Al2O310% mix homogeneously, heating, to 1350 DEG C, is incubated 6h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1100 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.007mg/cm2。
Embodiment 7
By mass percent by SiO262%, Na2O15%, CaO15%, Al2O38% mix homogeneously, heating, to 1400 DEG C, is incubated 6h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；By the viscous state of high-temperature oxidation resistant coating heating raw materials to 1200 DEG C, then, the TiAl-base alloy that the length of side is 10mm square is fully immersed in the coating material of viscous state, obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
Adopting oxidation weight gain method test TiAl-base alloy high-temperature oxidation resistant coating antioxygenic property, gained is had the TiAl-base alloy of high-temperature oxidation resistant coating after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.003mg/cm2。
Comparative example
Adopting oxidation weight gain method test TiAl-base alloy antioxygenic property, by TiAl-base alloy that the length of side is 10mm square after 1000 DEG C/100h high-temperature oxydation, oxidation weight gain is 0.080mg/cm2。
By to embodiment 1 to 7 and the contrast of comparative example antioxygenic property, it can be deduced that prepared TiAl-base alloy high-temperature oxidation resistant coating has good antioxygenic property, and material is simple and easy to get, and technique is simple, is suitable to commercial Application.
Claims (6)
1. a TiAl-base alloy high-temperature oxidation resistant coating, it is characterised in that be made up of the component of following mass percent:
SiO250%～80%；
Na2O5%～30%；
CaO5%～30%；
Al2O35%～10%.
2. TiAl-base alloy high-temperature oxidation resistant coating according to claim 1, it is characterised in that be made up of the component of following mass percent:
SiO260%～75%；
Na2O10%～20%；
CaO10%～20%；
Al2O37%～9%.
3. TiAl-base alloy high-temperature oxidation resistant coating according to claim 1, it is characterised in that the described component by following mass percent forms:
SiO262%；
Na2O15%；
CaO15%；
Al2O38%.
4. the preparation method of the TiAl-base alloy high-temperature oxidation resistant coating described in claim 1, it is characterised in that comprise the steps:
(1) taking each component of TiAl-base alloy high-temperature oxidation resistant coating, mix in proportion, heating, to 1300 DEG C～1500 DEG C, is incubated 6h～8h, furnace cooling, obtains high-temperature oxidation resistant coating raw material, stand-by；
(2) by the viscous state of step (1) gained high-temperature oxidation resistant coating heating raw materials to 1100 DEG C～1300 DEG C, then, TiAl-base alloy is fully immersed in the coating material of viscous state, namely obtains the surface TiAl-base alloy with high-temperature oxidation resistant coating.
5. the preparation method of TiAl-base alloy high-temperature oxidation resistant coating according to claim 4, it is characterised in that in step (1), heating-up temperature is 1400 DEG C, temperature retention time is insulation 6h.
6. the preparation method of TiAl-base alloy high-temperature oxidation resistant coating according to claim 4, it is characterised in that in step (2), heating-up temperature is 1200 DEG C.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249280A (en) * | 1998-09-28 | 2000-04-05 | 中国科学院金属腐蚀与防护研究所 | High-temp. protecting technique of Ti alloy and intermetallic Ti-Al compound |
| WO2003080140A1 (en) * | 2002-03-22 | 2003-10-02 | Ic Innovations Limited | Use of bioactive glass for air abrasive blasting of implant surfaces |
| CN101519274A (en) * | 2009-03-27 | 2009-09-02 | 中南大学 | TiAl-based alloy high-temperature oxidation resistant coating and method for implementing same |
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2016
- 2016-03-16 CN CN201610148554.5A patent/CN105714287A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249280A (en) * | 1998-09-28 | 2000-04-05 | 中国科学院金属腐蚀与防护研究所 | High-temp. protecting technique of Ti alloy and intermetallic Ti-Al compound |
| WO2003080140A1 (en) * | 2002-03-22 | 2003-10-02 | Ic Innovations Limited | Use of bioactive glass for air abrasive blasting of implant surfaces |
| CN101519274A (en) * | 2009-03-27 | 2009-09-02 | 中南大学 | TiAl-based alloy high-temperature oxidation resistant coating and method for implementing same |
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Application publication date: 20160629 |