CN113372127A - 一种抗烧结YTaO4球形喷涂粉的制备方法 - Google Patents
一种抗烧结YTaO4球形喷涂粉的制备方法 Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 56
- 238000005245 sintering Methods 0.000 title claims abstract description 25
- 238000005507 spraying Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title abstract description 9
- 239000012159 carrier gas Substances 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 4
- 238000000048 melt cooling Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 239000007921 spray Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 6
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 238000007751 thermal spraying Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000012720 thermal barrier coating Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
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- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
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Abstract
本发明涉及一种抗烧结YTaO4球形喷涂粉的制备方法,将一定粒径范围的YTaO4颗粒粉通过载气输送到高温等离子体反应器中的等离子火焰区域,高温加热熔化,在冷凝后即得球形YTaO4球形。由于经过超过高温处理,材料的抗烧结性极佳。该法可以得到抗烧结性好、球化率高、流动性好的YTaO4球形粉末,实现方法简单易行,性能更优异,可应用于热喷涂等领域,适用于工业化大规模生产YTaO4球形粉末。
Description
技术领域
本发明属于耐火材料技术领域,具体涉及一种抗烧结YTaO4球形喷涂粉的制备方法。
背景技术
热障涂层材料作为航空发动机及燃气轮机高温部件的热防护涂层,可改善高温部件的服役条件,延长服役寿命,节约燃料。目前使用最多的热障涂层材料氧化锆基材料在达到1200摄氏度左右的高温时将会发生相变,导致涂层脱落失效,使用寿命会呈指数级下降。随着航空技术的发展,发动机和燃气轮机高推重比,高出口温度的未来发展需要,要求热障涂层的服役温度不断提高,未来航空发动机的工作温度可能达到2000 ℃。对于航空、航天领域,开发出安全使用温度超过氧化锆基材料的新型热障涂层材料迫在眉睫。
昆明理工冯晶教授团队研究开发的YTaO4新型热障涂层材料,性能优异,其安全使用温度比氧化锆基材料使用温度高200℃。目前其喷涂粉的制备方法主要为喷雾造粒法,存在如下不足:(1)球形不够规则,存在椭球形粉末;⑵球化率低;⑶粒度不均匀,流动性差;(4)生产过程复杂,生长周期长;(5)原粉未经高温处理,材料抗烧结性差。
球化率高、流动性好、抗烧结性好的YTaO4球形粉的开发,对于新型YTaO4热障涂层材料的推广应用意义重大。
发明内容
针对现有技术存在的不足,本发明的目的在于提供一种抗烧结YTaO4形喷涂粉的制备方法。
本发明为完成上述目的采用如下技术方案:
一种抗烧结YTaO4球形喷涂粉的制备方法,将粒径为30~150 um的YTaO4颗粒粉通过载气输送到高温等离子体反应器中的等离子火焰区域,高温加热熔化,熔体在水中极冷后即得球形YTaO4。
所述的等离子体反应器采用Ar、N2和H2气体作为离子激发气体。
所述的载气为N2。
所述等离子体的功率为30-100 KW。
所述熔体冷凝是熔体喷到水中极冷。
本发明提出的一种抗烧结YTaO4形喷涂粉的制备方法,本发明采用等离子球化方法制备出的YTaO4喷涂粉,该方法的发明提高了YTaO4喷涂粉抗烧结性、球形化率、流动性等综合性能,推动新一代备YTaO4热障涂层的应用与推广,且本发明方法生产效率高、工艺简单、适合大规模工业生产的特点。
附图说明
图1为实施例1所制得的YTaO4球形喷涂粉的SEM照片。
具体实施方式
结合附图和具体实施例对本发明作进一步描述:
实施例1:
一种抗烧结YTaO4球形喷涂粉的制备方法:将YTaO4粉体过100目和500目筛子,取100目筛下和500目筛上,然后通过载气(载气为氮气)输送到高温等离子体反应器中的高温等离子火焰区域,高温熔化后,喷到水中极冷。送粉量为500g/min,载气(氮气)的流量为40L/min,高温等离子体反应器的离子激发气体的氩气、氮气和氢气的流量为180 L/min、120L/min和67 L/min,大气等离子设备的功率为100 KW,本实施例所得抗烧结YTaO4球形喷涂粉粒径为30~150 μm。
本实施例1所制得的YTaO4球形喷涂粉的SEM照片如图1所示。
实施例2:
一种抗烧结YTaO4球形喷涂粉的制备方法:将YTaO4粉体过150目和325目筛子,取150目筛下和500目筛上,然后通过载气(载气为氮气)输送到高温等离子体反应器中的高温等离子火焰区域,高温熔化后,喷到水中极冷。送粉量为400g/min,载气(氮气)的流量为40L/min,高温等离子体反应器的离子激发气体的氩气、氮气和氢气的流量为200 L/min、80L/min和30 L/min,大气等离子设备的功率为75 KW,本实施例所得抗烧结YTaO4球形喷涂粉粒径为30~100 μm。
实施例3:
一种抗烧结YTaO4球形喷涂粉的制备方法:将YTaO4粉体过100目和250目筛子,取150目筛下和250目筛上,然后通过载气(载气为氮气)输送到高温等离子体反应器中的高温等离子火焰区域,高温熔化后,喷到水中极冷。送粉量为550g/min,载气(氮气)的流量为45L/min,高温等离子体反应器的离子激发气体的氩气、氮气和氢气的流量为200 L/min、75L/min和80 L/min,大气等离子设备的功率为100 KW,本实施例所得抗烧结YTaO4球形喷涂粉粒径为60~100 μm。
实施例4:
一种抗烧结YTaO4球形喷涂粉的制备方法:将YTaO4粉体过200目和325目筛子,取200目筛下和500目筛上,然后通过载气(载气为氮气)输送到高温等离子体反应器中的高温等离子火焰区域,高温熔化后,喷到水中极冷。送粉量为350g/min,载气(氮气)的流量为40L/min,高温等离子体反应器的离子激发气体的氩气、氮气和氢气的流量为150 L/min、75L/min和28 L/min,大气等离子设备的功率为75 KW,本实施例所得抗烧结YTaO4球形喷涂粉粒径为30~75 μm。
Claims (5)
1.一种抗烧结YTaO4球形喷涂粉的制备方法,其特征在于:将粒径为30~150 um的YTaO4颗粒粉通过载气输送到高温等离子体反应器中的等离子火焰区域,高温加热熔化,冷凝后即得球形YTaO4。
2.如权利要求1所述的一种抗烧结YTaO4球形喷涂粉的制备方法,其特征在于:所述的等离子体反应器采用Ar、N2和H2气体作为离子激发气体。
3.如权利要求1所述的一种抗烧结YTaO4球形喷涂粉的制备方法,其特征在于:所述的载气为N2。
4.如权利要求1所述的一种抗烧结YTaO4球形喷涂粉的制备方法,其特征在于:所述等离子体的功率为30-100 KW。
5.如权利要求1所述的一种抗烧结YTaO4球形喷涂粉的制备方法,其特征在于:所述熔体冷却方式是熔体喷到水中极冷。
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