CN105777162A - Y2O3 doped BaZrO3 refractory material - Google Patents

Y2O3 doped BaZrO3 refractory material Download PDF

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Publication number
CN105777162A
CN105777162A CN201610163555.7A CN201610163555A CN105777162A CN 105777162 A CN105777162 A CN 105777162A CN 201610163555 A CN201610163555 A CN 201610163555A CN 105777162 A CN105777162 A CN 105777162A
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China
Prior art keywords
refractory material
titanium
bao
crucibles
bazro3
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Pending
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CN201610163555.7A
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Chinese (zh)
Inventor
李重河
王世华
鲁雄刚
程治玮
陈光耀
秦子威
汪宏斌
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201610163555.7A priority Critical patent/CN105777162A/en
Publication of CN105777162A publication Critical patent/CN105777162A/en
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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
    • 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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/49—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The invention discloses a Y2O3 doped BaZrO3 refractory material for titanium and titanium alloy melting crucibles. The material comprises, by mole percent, 40.0-58.0% of barium carbonate, BaO, Ba(OH)2, BaO2 or BaCl2, 40.0-58.0% of zirconium oxide and 0.1-15.0% of yttrium oxide. Powder materials are subjected to procedures of forming, sintering and the like to obtain the crucibles. The crucibles made from the Y2O3 doped BaZrO3 refractory material are used for vacuum induction melting of titanium alloys at a melting temperature of 1400-1800 DEG C, inner and outer surfaces of the crucibles are intact and avoid reaction with the titanium alloys, and the oxygen content of obtained alloy ingots is almost unchanged as compared with that of master alloys, so that purity and performances of the titanium alloys are guaranteed.

Description

A kind of doping Y2O3BaZrO3Refractory material
Technical field
The present invention relates to a kind of novel doping Y2O3BaZrO3The synthesis technique of refractory material and the research of smelting titanium alloy, belong to the manufacture of refractory material, high melt technical field.
Background technology
The production of titanium or titanium alloy mostly adopts water jacketed copper crucible smelting technology, but this process energy consumption is high, improves production cost, and this method causes thermal field uneven so that titanium alloy tissue macrosegregation, affect the serviceability of titanium alloy.Researcher finds that process for vacuum induction smelting can reduce production cost, next to that vaccum sensitive stove has stronger function composite by electromagnetic stirring, make the degree of superheat that alloy melt maintenance is higher, this is conducive to eliminating component segregation, obtain the uniform titanium material of composition, but precondition is it is necessary to have there is not the crucible material of interfacial reaction with melts of titanium alloy.
Existing frequently-used refractory material has aluminium oxide, silicon oxide, magnesium oxide, calcium oxide, zirconium oxide, yittrium oxide, boron nitride, graphite etc..The premise realizing crucible type vacuum induction melting is the refractory material that must find and chemical reaction does not occur with titanium or titanium alloy, although researcher has carried out a series of research in this respect both at home and abroad, and have made some progress, but, the research having not yet to see the crucible refractory material that industrialized production titanium or titanium alloy uses has substantial breakthrough.
Summary of the invention
It is an object of the invention to synthesizing blender Y2O3BaZrO3Novel refractory, and for titanium or titanium alloy melting.
The invention mainly includes addition yittrium oxide and titanium oxide powder, because addition is few, therefore refractory material cost increases few.The material mixture ratio of the present invention is as follows: (molar percentage) material of main part: 40.0～58.0% brium carbonates (or BaO, Ba (OH)2、BaO2、BaCl2), 40.0～58.0% zirconium oxides and 0.10～15.0% yittrium oxide, then add titanium oxide 0.5～5.0wt.%, utilize the step of above-mentioned material moulded products:
A. dispensing: by above-mentioned technology dispensing.
B. ball milling: by above-mentioned dispensing ball milling 8～12h.
C. molding: above-mentioned material is compressing in a mold.
D. sintering: molding sample is warming up to 500～650 DEG C, sinters 1～6 hour, then be rapidly heated to 1550～1780 DEG C, sinter 4～8 hours, be cooled to room temperature then through special process, obtain finished product.
Showing above by XRD figure analysis of spectrum and density measurement, its phase composition is Ba2YZrO6、BaZrO3, density is 5.37～6.10g/cm3.Phase composition shows yittrium oxide and barium zirconate complete reaction, generates Ba2YZrO6；Density measurement shows, most high density can reach 6.10g/cm3。
Accompanying drawing explanation
Fig. 1 is the refractory material powder body XRD figure spectrum after synthesis.
Fig. 2 is the crucible SEM figure after having sintered and crystal grain composition, and crystal grain composition is as shown in table 1.
Fig. 3 is the crucible sample obtained after supercool edge, cutting, corase grind, fine grinding, polishing after melting.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail:
Embodiment 1
Specifically comprise the following steps that
Doping Y provided by the invention2O3BaZrO3Refractory material component is as follows: (molar percentage) brium carbonate powder 48.0%, zirconia powder 48.0%, yittrium oxide powder 4.0%, then adds 1.0%(mass percent) titanium oxide of left and right, sintering condition is about 1650 DEG C, insulation 6h, and all raw materials all adopt technical pure.
Gained Y2O3The BaZrO of doping3Refractory material:
Its density is approximately 5.71g/cm3。
Embodiment 2
The present embodiment is substantially the same manner as Example 1, institute the difference is that: sintering condition is about 1750 DEG C.
Gained Y2O3The BaZrO of doping3Refractory material:
Its density is approximately 6.10g/cm3。

Claims (3)

1. a doping Y2O3BaZrO3Refractory material, it is characterised in that this material composition is as follows with molar percent: 40.0～58.0% brium carbonates or BaO or Ba (OH)2Or BaO2Or BaCl2, 40.0～58.0% zirconium oxides and 0.1～15.0% yittrium oxide.
2. doping Y according to claim 12O3BaZrO3Refractory material, it is characterised in that this refractory material is in the preparation, it is necessary to add the TiO of 0.5～5.0wt.%2Make sintering aid.
3. doping Y according to claim 12O3BaZrO3Refractory material, it is characterised in that by brium carbonate or BaO or Ba (OH)2Or BaO2Or BaCl2, zirconium oxide, yittrium oxide and titanium oxide the powder share dispensing according to claim 1, then compressing in a mold, and sintering obtains finished product under specific sintering process.
CN201610163555.7A 2016-03-19 2016-03-19 Y2O3 doped BaZrO3 refractory material Pending CN105777162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610163555.7A CN105777162A (en) 2016-03-19 2016-03-19 Y2O3 doped BaZrO3 refractory material

Publications (1)

Publication Number Publication Date
CN105777162A true CN105777162A (en) 2016-07-20

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108424142A (en) * 2018-04-28 2018-08-21 中国科学院宁波材料技术与工程研究所 A kind of preparation method of BaZrY dusty materials
CN109592709A (en) * 2018-12-26 2019-04-09 郑州振中电熔新材料有限公司 A kind of preparation method of electric smelting barium zirconate
CN110156463A (en) * 2019-07-18 2019-08-23 湖南三五二环保科技有限公司 A kind of compound refractory material and preparation method thereof
CN114436648A (en) * 2021-12-15 2022-05-06 上海大学 Barium-yttrium-zirconium-oxygen-fluorine multi-perovskite structure material and preparation method thereof
CN116477940A (en) * 2023-03-17 2023-07-25 电子科技大学 Yttrium titanate doped zirconia ceramic material and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456749A (en) * 2009-01-04 2009-06-17 上海大学 Titanium and titanium alloy melting kettle refractory materials and preparation method of kettle
CN102503489A (en) * 2011-11-09 2012-06-20 上海大学 BaZrO3 refractory material for smelting titanium alloy and preparation method of crucibles
CN103896614A (en) * 2014-03-31 2014-07-02 上海大学 Refractory material for smelting titanium and titanium alloy, application thereof and method for preparing crucible

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456749A (en) * 2009-01-04 2009-06-17 上海大学 Titanium and titanium alloy melting kettle refractory materials and preparation method of kettle
CN102503489A (en) * 2011-11-09 2012-06-20 上海大学 BaZrO3 refractory material for smelting titanium alloy and preparation method of crucibles
CN103896614A (en) * 2014-03-31 2014-07-02 上海大学 Refractory material for smelting titanium and titanium alloy, application thereof and method for preparing crucible

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108424142A (en) * 2018-04-28 2018-08-21 中国科学院宁波材料技术与工程研究所 A kind of preparation method of BaZrY dusty materials
CN109592709A (en) * 2018-12-26 2019-04-09 郑州振中电熔新材料有限公司 A kind of preparation method of electric smelting barium zirconate
CN109592709B (en) * 2018-12-26 2021-05-25 郑州振中电熔新材料有限公司 Preparation method of electric-melting barium zirconate
CN110156463A (en) * 2019-07-18 2019-08-23 湖南三五二环保科技有限公司 A kind of compound refractory material and preparation method thereof
CN110156463B (en) * 2019-07-18 2019-10-15 湖南三五二环保科技有限公司 A kind of compound refractory material and preparation method thereof
CN114436648A (en) * 2021-12-15 2022-05-06 上海大学 Barium-yttrium-zirconium-oxygen-fluorine multi-perovskite structure material and preparation method thereof
CN116477940A (en) * 2023-03-17 2023-07-25 电子科技大学 Yttrium titanate doped zirconia ceramic material and preparation method and application thereof
CN116477940B (en) * 2023-03-17 2024-04-12 电子科技大学 Yttrium titanate doped zirconia ceramic material and preparation method and application thereof

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Application publication date: 20160720