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Preparation method for in-situ generation of rare earth apatite phase compact reaction layer capable of resisting CMAS corrosion
The invention discloses a preparation method of an in-situ generated rare earth apatite phase compact reaction layer capable of resisting CMAS corrosion, and belongs to the field of thermal barrier coating (TBCs) materials and preparation thereof. A rare earth oxide coating is prepared on the surface of a YSZ (Yttria Stabilized Zirconia) coating by adopting a plasma thermal spraying method, a uniform CaO-MgO-Al2O3-SiO2 (CMAS) glass layer is coated on the surface of the rare earth oxide coating by adopting a slurry brush plating method, and after the pre-corrosion treatment at the temperature of 1250-1400 DEG C for 10-15 minutes, the rare earth oxide coating is coated with the CaO-MgO-Al2O3-SiO2 (CMAS) glass layer. A thin, continuous and compact reaction layer which is good in interface bonding and composed of a single high-melting-point rare earth apatite phase is generated on the surface of the coating in situ, and the thickness of the reaction layer is not larger than 9 micrometers after the reaction layer is subjected to corrosion treatment for 24 h at the temperature of 1400 DEG C. The prepared in-situ generated rare earth apatite phase compact reaction layer has good high-temperature thermochemical stability in high-temperature molten CMAS, further permeation corrosion of molten glass CMAS melt is effectively inhibited, and the in-situ generated rare earth apatite phase compact reaction layer has excellent application prospects in the field of high-temperature protection.
本发明公开了一种抗CMAS腐蚀的原位生成稀土磷灰石相致密反应层的制备方法，属于热障涂层(TBCs)材料及其制备领域。本发明是采用等离子热喷涂方法在YSZ涂层表面制备一层稀土氧化物涂层，采用浆料刷镀法在稀土氧化物涂层表面涂覆一层均匀的CaO‑MgO‑Al2O3‑SiO2(CMAS)玻璃层，经过温度为1250℃‑1400℃和时间为10‑15分钟的预腐蚀处理后，在涂层表面原位生成界面结合良好的、由单一高熔点稀土磷灰石相组成的薄且连续致密反应层，该反应层经过1400℃腐蚀处理24h后厚度不超过9μm。本发明制备的原位生成稀土磷灰石相致密反应层在高温熔融CMAS中具有很好的高温热化学稳定性，有效抑制了熔融玻璃CMAS熔体的进一步渗透腐蚀，在高温防护领域具有优秀的应用前景。
Preparation method for in-situ generation of rare earth apatite phase compact reaction layer capable of resisting CMAS corrosion
The invention discloses a preparation method of an in-situ generated rare earth apatite phase compact reaction layer capable of resisting CMAS corrosion, and belongs to the field of thermal barrier coating (TBCs) materials and preparation thereof. A rare earth oxide coating is prepared on the surface of a YSZ (Yttria Stabilized Zirconia) coating by adopting a plasma thermal spraying method, a uniform CaO-MgO-Al2O3-SiO2 (CMAS) glass layer is coated on the surface of the rare earth oxide coating by adopting a slurry brush plating method, and after the pre-corrosion treatment at the temperature of 1250-1400 DEG C for 10-15 minutes, the rare earth oxide coating is coated with the CaO-MgO-Al2O3-SiO2 (CMAS) glass layer. A thin, continuous and compact reaction layer which is good in interface bonding and composed of a single high-melting-point rare earth apatite phase is generated on the surface of the coating in situ, and the thickness of the reaction layer is not larger than 9 micrometers after the reaction layer is subjected to corrosion treatment for 24 h at the temperature of 1400 DEG C. The prepared in-situ generated rare earth apatite phase compact reaction layer has good high-temperature thermochemical stability in high-temperature molten CMAS, further permeation corrosion of molten glass CMAS melt is effectively inhibited, and the in-situ generated rare earth apatite phase compact reaction layer has excellent application prospects in the field of high-temperature protection.
本发明公开了一种抗CMAS腐蚀的原位生成稀土磷灰石相致密反应层的制备方法，属于热障涂层(TBCs)材料及其制备领域。本发明是采用等离子热喷涂方法在YSZ涂层表面制备一层稀土氧化物涂层，采用浆料刷镀法在稀土氧化物涂层表面涂覆一层均匀的CaO‑MgO‑Al2O3‑SiO2(CMAS)玻璃层，经过温度为1250℃‑1400℃和时间为10‑15分钟的预腐蚀处理后，在涂层表面原位生成界面结合良好的、由单一高熔点稀土磷灰石相组成的薄且连续致密反应层，该反应层经过1400℃腐蚀处理24h后厚度不超过9μm。本发明制备的原位生成稀土磷灰石相致密反应层在高温熔融CMAS中具有很好的高温热化学稳定性，有效抑制了熔融玻璃CMAS熔体的进一步渗透腐蚀，在高温防护领域具有优秀的应用前景。
Preparation method for in-situ generation of rare earth apatite phase compact reaction layer capable of resisting CMAS corrosion
一种抗CMAS腐蚀的原位生成稀土磷灰石相致密反应层的制备方法
LIANG TIANQUAN (author) / YU ZHIYUN (author) / ZHAI YIFAN (author) / HE AOPING (author) / HE HUAN (author) / CHEN XIYONG (author)
2023-07-25
Patent
Electronic Resource
Chinese
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