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Preparation method of oxidation-resistant and corrosion-resistant insulating sheath for metal tube of ion flame detector
The invention discloses a preparation method of an oxidation-resistant and corrosion-resistant insulating sheath for a metal tube of an ion flame detector, which comprises the following steps of: winding alumina fiber cloth on a graphite rod to obtain an alumina fiber cloth preform; depositing a silicon carbide interface layer on the alumina fiber cloth preform by adopting a CVD (Chemical Vapor Deposition) process to obtain the alumina fiber cloth preform deposited with the silicon carbide interface layer, and then drawing out the graphite rod; putting the alumina fiber cloth preform deposited with the silicon carbide interface layer into the alumina sol-silicon dioxide powder slurry for dipping, and then drying to obtain a particle-fiber reinforced alumina ceramic-based composite material blank; carrying out high-temperature sintering on the green body to obtain a particle-fiber reinforced aluminum oxide ceramic-based composite material; and circularly dipping and sintering until the mass of the composite material is increased by less than 5wt% compared with the mass of the previous composite material. The composite material sheath prepared by the invention has multiple characteristics of low density, corrosion resistance, high-temperature oxidation resistance, high toughness, good insulativity and the like.
本发明公开了一种离子火焰探测器金属管耐氧化耐腐蚀绝缘包套的制备方法，包括以下步骤，将氧化铝纤维布缠绕在石墨棒上，得到氧化铝纤维布预制体；采用CVD工艺在氧化铝纤维布预制体上沉积碳化硅界面层，得到沉积有碳化硅界面层的氧化铝纤维布预制体，然后抽出石墨棒；将沉积有碳化硅界面层的氧化铝纤维布预制体放入氧化铝溶胶‑二氧化硅粉末浆料中浸渍，然后烘干，得到颗粒‑纤维增强氧化铝陶瓷基复合材料坯体；将坯体进行高温烧结，得到颗粒‑纤维增强氧化铝陶瓷基复合材料；循环浸渍和烧结，直至复合材料的质量较前一次的质量增加小于5wt％。本发明制备的复合材料包套具有密度低、耐腐蚀、抗高温氧化、韧性较高、绝缘性好等多重特性。
Preparation method of oxidation-resistant and corrosion-resistant insulating sheath for metal tube of ion flame detector
The invention discloses a preparation method of an oxidation-resistant and corrosion-resistant insulating sheath for a metal tube of an ion flame detector, which comprises the following steps of: winding alumina fiber cloth on a graphite rod to obtain an alumina fiber cloth preform; depositing a silicon carbide interface layer on the alumina fiber cloth preform by adopting a CVD (Chemical Vapor Deposition) process to obtain the alumina fiber cloth preform deposited with the silicon carbide interface layer, and then drawing out the graphite rod; putting the alumina fiber cloth preform deposited with the silicon carbide interface layer into the alumina sol-silicon dioxide powder slurry for dipping, and then drying to obtain a particle-fiber reinforced alumina ceramic-based composite material blank; carrying out high-temperature sintering on the green body to obtain a particle-fiber reinforced aluminum oxide ceramic-based composite material; and circularly dipping and sintering until the mass of the composite material is increased by less than 5wt% compared with the mass of the previous composite material. The composite material sheath prepared by the invention has multiple characteristics of low density, corrosion resistance, high-temperature oxidation resistance, high toughness, good insulativity and the like.
本发明公开了一种离子火焰探测器金属管耐氧化耐腐蚀绝缘包套的制备方法，包括以下步骤，将氧化铝纤维布缠绕在石墨棒上，得到氧化铝纤维布预制体；采用CVD工艺在氧化铝纤维布预制体上沉积碳化硅界面层，得到沉积有碳化硅界面层的氧化铝纤维布预制体，然后抽出石墨棒；将沉积有碳化硅界面层的氧化铝纤维布预制体放入氧化铝溶胶‑二氧化硅粉末浆料中浸渍，然后烘干，得到颗粒‑纤维增强氧化铝陶瓷基复合材料坯体；将坯体进行高温烧结，得到颗粒‑纤维增强氧化铝陶瓷基复合材料；循环浸渍和烧结，直至复合材料的质量较前一次的质量增加小于5wt％。本发明制备的复合材料包套具有密度低、耐腐蚀、抗高温氧化、韧性较高、绝缘性好等多重特性。
Preparation method of oxidation-resistant and corrosion-resistant insulating sheath for metal tube of ion flame detector
离子火焰探测器金属管耐氧化耐腐蚀绝缘包套的制备方法
LIN HONGJIAO (author) / YUE ZHUFENG (author) / WEN ZHIXUN (author) / SUN ZHONGYUAN (author) / LI ZHENWEI (author) / LIU RUIXIAN (author) / LIU HANGYI (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
G01J
Messen der Intensität, der Geschwindigkeit, der spektralen Zusammensetzung, der Polarisation, der Phase oder der Pulscharakteristik von infrarotem, sichtbarem oder ultraviolettem Licht
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MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
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