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Solid-phase synthesis method of BSAS powder for environmental barrier coating
The invention provides a solid-phase synthesis method of BSAS powder for an environmental barrier coating, and belongs to the technical field of coating materials. The solid-phase synthesis method comprises the following steps: mixing BaCO3, SrCO3, Al (OH) 3 and SiO2 as raw materials according to a certain molar ratio, and ball-milling, drying, sieving and sintering the mixture to obtain blocky BSAS; adding Arabic gum, ammonium citrate and deionized water according to a certain ratio, and carrying out ball milling; and carrying out ball milling again, and then carrying out spray granulation toobtain hollow spherical BSAS powder. The method is simple in technological process, easy to operate, low in synthesis temperature and low in production cost; and the synthesized BSAS powder is of a single-phase structure, the particle size distribution is 40-125 microns, the powder is stable in structure at the high temperature of 1400 DEG C, the flowability of the synthesized powder is good, andthe BSAS powder is suitable for preparing a BSAS environmental barrier coating through plasma spraying.
本发明提供了一种环境障涂层用BSAS粉末固相合成方法，属于涂层材料技术领域。该固相合成方法采用BaCO3、SrCO3、Al(OH)3和SiO2为原材料，按照一定摩尔比例混合，球磨、烘干、过筛后进行烧结，得到块状BSAS；再加入一定比例的阿拉伯胶、柠檬酸铵和去离子水球磨；再次球磨后喷雾造粒得到中空球状的BSAS粉末。本发明工艺过程简单，易操作，合成温度低，生产成本低；本发明型合成的BSAS粉末为单一相结构，粒径分布在40‑125μm，1400℃高温下结构稳定，合成的粉末流动性好，适于等离子喷涂制备BSAS环境障涂层。
Solid-phase synthesis method of BSAS powder for environmental barrier coating
The invention provides a solid-phase synthesis method of BSAS powder for an environmental barrier coating, and belongs to the technical field of coating materials. The solid-phase synthesis method comprises the following steps: mixing BaCO3, SrCO3, Al (OH) 3 and SiO2 as raw materials according to a certain molar ratio, and ball-milling, drying, sieving and sintering the mixture to obtain blocky BSAS; adding Arabic gum, ammonium citrate and deionized water according to a certain ratio, and carrying out ball milling; and carrying out ball milling again, and then carrying out spray granulation toobtain hollow spherical BSAS powder. The method is simple in technological process, easy to operate, low in synthesis temperature and low in production cost; and the synthesized BSAS powder is of a single-phase structure, the particle size distribution is 40-125 microns, the powder is stable in structure at the high temperature of 1400 DEG C, the flowability of the synthesized powder is good, andthe BSAS powder is suitable for preparing a BSAS environmental barrier coating through plasma spraying.
本发明提供了一种环境障涂层用BSAS粉末固相合成方法，属于涂层材料技术领域。该固相合成方法采用BaCO3、SrCO3、Al(OH)3和SiO2为原材料，按照一定摩尔比例混合，球磨、烘干、过筛后进行烧结，得到块状BSAS；再加入一定比例的阿拉伯胶、柠檬酸铵和去离子水球磨；再次球磨后喷雾造粒得到中空球状的BSAS粉末。本发明工艺过程简单，易操作，合成温度低，生产成本低；本发明型合成的BSAS粉末为单一相结构，粒径分布在40‑125μm，1400℃高温下结构稳定，合成的粉末流动性好，适于等离子喷涂制备BSAS环境障涂层。
Solid-phase synthesis method of BSAS powder for environmental barrier coating
一种环境障涂层用BSAS粉末固相合成方法
FAN JINJUAN (author) / HE SHIMEI (author)
2021-01-15
Patent
Electronic Resource
Chinese