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Preparation process of thermal shock resistant silicon carbide coating
The invention discloses a preparation process of a thermal shock resistant silicon carbide coating. The thermal shock resistant silicon carbide coating comprises the following components in parts by weight: 20-30 parts of silicon powder, 25-40 parts of carbon powder, 20-30 parts of powdery silicon carbide, 20-30 parts of epoxy silane, 5-15 parts of mullite fiber powder, 60-80 parts of water, 1-3 parts of a water reducing agent and 45-60 parts of an alumina-based homogenous material. The content of aluminum chloride in the alumina-based homogenized material is 85wt%, and the alumina-based homogenized material is prepared by firing a bauxite ore green body with 70wt% of aluminum chloride at 1500 DEG C for 5 hours; the water reducing agent is one of a sulfamate water reducing agent, a polycarboxylate water reducing agent and a powdery polycarboxylate water reducing agent; the particle size of the silicon powder ranges from 500 nm to 1000 nm.
本发明公开了一种耐热震碳化硅涂层的制备工艺，包括按照重量份数计的硅粉20～30份、碳粉25～40份、粉末碳化硅20～30份、环氧基硅烷20～30份、莫来石纤维粉5～15份、水60～80份、减水剂1～3份，矾土基均质料45～60份；所述的矾土基均质料中氯化铝的含量为85wt％，以70wt％氯化铝含量的铝矾土矿生坯在1500℃下保温5h烧制而成；所述减水剂为氨基磺酸盐减水剂、聚羧酸盐减水剂、粉末聚羧酸酯减水剂其中的一种；所述硅粉的粉粒尺径为500～1000nm。
Preparation process of thermal shock resistant silicon carbide coating
The invention discloses a preparation process of a thermal shock resistant silicon carbide coating. The thermal shock resistant silicon carbide coating comprises the following components in parts by weight: 20-30 parts of silicon powder, 25-40 parts of carbon powder, 20-30 parts of powdery silicon carbide, 20-30 parts of epoxy silane, 5-15 parts of mullite fiber powder, 60-80 parts of water, 1-3 parts of a water reducing agent and 45-60 parts of an alumina-based homogenous material. The content of aluminum chloride in the alumina-based homogenized material is 85wt%, and the alumina-based homogenized material is prepared by firing a bauxite ore green body with 70wt% of aluminum chloride at 1500 DEG C for 5 hours; the water reducing agent is one of a sulfamate water reducing agent, a polycarboxylate water reducing agent and a powdery polycarboxylate water reducing agent; the particle size of the silicon powder ranges from 500 nm to 1000 nm.
本发明公开了一种耐热震碳化硅涂层的制备工艺，包括按照重量份数计的硅粉20～30份、碳粉25～40份、粉末碳化硅20～30份、环氧基硅烷20～30份、莫来石纤维粉5～15份、水60～80份、减水剂1～3份，矾土基均质料45～60份；所述的矾土基均质料中氯化铝的含量为85wt％，以70wt％氯化铝含量的铝矾土矿生坯在1500℃下保温5h烧制而成；所述减水剂为氨基磺酸盐减水剂、聚羧酸盐减水剂、粉末聚羧酸酯减水剂其中的一种；所述硅粉的粉粒尺径为500～1000nm。
Preparation process of thermal shock resistant silicon carbide coating
一种耐热震碳化硅涂层的制备工艺
SUN JICUN (author) / MA LIANGLAI (author)
2023-03-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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