A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mullite high-temperature anti-oxidation coating on surface of composite material and preparation method of mullite high-temperature anti-oxidation coating
The invention discloses a mullite high-temperature anti-oxidation coating on the surface of a composite material and a preparation method of the mullite high-temperature anti-oxidation coating. The preparation method comprises the following steps of: preparing an Al (NO3) 3.9 H2O solution with a set concentration; dropwise adding excessive ammonia water into the solution obtained in the previous step, and continuously stirring until white precipitate is generated; adding transparent silica sol into the white precipitate; placing the mixed suspension in the previous step on a roller type ball mill for ball milling; placing a C/C composite material plate and the mixed suspension on liquid-phase plasma spraying equipment, and preparing Al (OH) 3 and SiO2 coatings on the composite material plate by using suspension plasma spraying equipment; and carrying out vacuum heat treatment on the prepared coatings at high temperature to make the coatings react to generate a mullite coating. According to the invention, Al2O3 and SiO2 are compounded to generate a mullite phase with good high-temperature stability, so that the oxidation resistance of the composite material is improved.
本发明一种复合材料表面莫来石高温防氧化涂层及其制备方法，该制备方法包括：配制设定浓度的Al(NO3)3·9H2O溶液；将过量的氨水逐滴滴加于上步骤的溶液中，并持续搅拌直至生成白色沉淀；向白色沉淀中加入透明硅溶胶；将上步骤中的混合悬浊液置于辊式球磨机上进行球磨；将C/C复合材料板和混合悬浊液置于液相等离子喷涂设备上，利用悬浮液等离子喷涂设备在复合材料板上制备Al(OH)3和SiO2涂层；将制备的涂层在高温下进行真空热处理，使其发生反应生成莫来石涂层。本发明通过将Al2O3和SiO2两种氧化物进行复合，能够生成高温稳定性良好的莫来石相，从而改善复合材料的抗氧化性。
Mullite high-temperature anti-oxidation coating on surface of composite material and preparation method of mullite high-temperature anti-oxidation coating
The invention discloses a mullite high-temperature anti-oxidation coating on the surface of a composite material and a preparation method of the mullite high-temperature anti-oxidation coating. The preparation method comprises the following steps of: preparing an Al (NO3) 3.9 H2O solution with a set concentration; dropwise adding excessive ammonia water into the solution obtained in the previous step, and continuously stirring until white precipitate is generated; adding transparent silica sol into the white precipitate; placing the mixed suspension in the previous step on a roller type ball mill for ball milling; placing a C/C composite material plate and the mixed suspension on liquid-phase plasma spraying equipment, and preparing Al (OH) 3 and SiO2 coatings on the composite material plate by using suspension plasma spraying equipment; and carrying out vacuum heat treatment on the prepared coatings at high temperature to make the coatings react to generate a mullite coating. According to the invention, Al2O3 and SiO2 are compounded to generate a mullite phase with good high-temperature stability, so that the oxidation resistance of the composite material is improved.
本发明一种复合材料表面莫来石高温防氧化涂层及其制备方法，该制备方法包括：配制设定浓度的Al(NO3)3·9H2O溶液；将过量的氨水逐滴滴加于上步骤的溶液中，并持续搅拌直至生成白色沉淀；向白色沉淀中加入透明硅溶胶；将上步骤中的混合悬浊液置于辊式球磨机上进行球磨；将C/C复合材料板和混合悬浊液置于液相等离子喷涂设备上，利用悬浮液等离子喷涂设备在复合材料板上制备Al(OH)3和SiO2涂层；将制备的涂层在高温下进行真空热处理，使其发生反应生成莫来石涂层。本发明通过将Al2O3和SiO2两种氧化物进行复合，能够生成高温稳定性良好的莫来石相，从而改善复合材料的抗氧化性。
Mullite high-temperature anti-oxidation coating on surface of composite material and preparation method of mullite high-temperature anti-oxidation coating
一种复合材料表面莫来石高温防氧化涂层及其制备方法
WANG HONGZHE (author) / CUI XIONGHUA (author) / ZHANG LEI (author) / CAO HAITAO (author) / YANG ZHEYI (author) / CUI JINWEN (author)
2022-01-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
Preparation method of SiC whisker reinforced mullite anti-oxidation coating
| European Patent Office | 2016
Effects of Mullite Coating on the Anti-oxidation of Silicon Carbide at High Temperature
| British Library Online Contents | 2003
Preparation method of mullite oxidation resistant coating
| European Patent Office | 2015