A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of thermal spraying chromium oxide composite ceramic powder
The invention discloses a preparation method of thermal spraying chromium oxide composite ceramic powder. The chromium oxide composite ceramic powder is composed of the following components by weight:400-750Kg of chromium oxide, 250-600Kg of titanium oxide and neutral silica sol accounting for 2-4.0% of the weight of the raw materials. The preparation method comprises the following steps: by taking silicon normal sol as a silicon oxide source and a granulation adhesive, carrying out spray granulation and high-temperature sintering to prepare Cr2O<3-5%>SiO2<3%>TiO2 composite powder. The original particle size of silicon oxide in the silica sol is 14 nanometers, the silicon oxide can be effectively adsorbed and uniformly coat the surfaces of chromium oxide and titanium oxide, the sinteringtemperature is reduced, the porosity of the coating is lower, and the hardness and toughness are obviously improved. In the plasma spraying process, the reaction of chromium oxide and oxygen is effectively isolated, and hexavalent chromium is generated.
本发明公开了一种热喷涂氧化铬复合陶瓷粉体的制备方法，该氧化铬复合陶瓷粉体由以下成分构成，以重量计：氧化铬400‑750Kg、氧化钛250‑600Kg和原料重量2‑4.0％的中性硅溶胶。本发明以硅常溶胶做氧化硅源和造粒粘接剂，经喷雾造粒‑高温烧结后制成Cr2O3‑5％SiO23％TiO2复合粉末。硅溶胶中氧化硅的原始粒径14纳米，可以有效吸附并均匀包覆在氧化铬和氧化钛表面，降低了烧结温度，涂层孔隙率更低，硬度和韧性显著提高。在等离子喷涂过程中有效的隔绝了氧化铬与氧的反应，产生六价铬。
Preparation method of thermal spraying chromium oxide composite ceramic powder
The invention discloses a preparation method of thermal spraying chromium oxide composite ceramic powder. The chromium oxide composite ceramic powder is composed of the following components by weight:400-750Kg of chromium oxide, 250-600Kg of titanium oxide and neutral silica sol accounting for 2-4.0% of the weight of the raw materials. The preparation method comprises the following steps: by taking silicon normal sol as a silicon oxide source and a granulation adhesive, carrying out spray granulation and high-temperature sintering to prepare Cr2O<3-5%>SiO2<3%>TiO2 composite powder. The original particle size of silicon oxide in the silica sol is 14 nanometers, the silicon oxide can be effectively adsorbed and uniformly coat the surfaces of chromium oxide and titanium oxide, the sinteringtemperature is reduced, the porosity of the coating is lower, and the hardness and toughness are obviously improved. In the plasma spraying process, the reaction of chromium oxide and oxygen is effectively isolated, and hexavalent chromium is generated.
本发明公开了一种热喷涂氧化铬复合陶瓷粉体的制备方法，该氧化铬复合陶瓷粉体由以下成分构成，以重量计：氧化铬400‑750Kg、氧化钛250‑600Kg和原料重量2‑4.0％的中性硅溶胶。本发明以硅常溶胶做氧化硅源和造粒粘接剂，经喷雾造粒‑高温烧结后制成Cr2O3‑5％SiO23％TiO2复合粉末。硅溶胶中氧化硅的原始粒径14纳米，可以有效吸附并均匀包覆在氧化铬和氧化钛表面，降低了烧结温度，涂层孔隙率更低，硬度和韧性显著提高。在等离子喷涂过程中有效的隔绝了氧化铬与氧的反应，产生六价铬。
Preparation method of thermal spraying chromium oxide composite ceramic powder
一种热喷涂氧化铬复合陶瓷粉体的制备方法
HUANG XINCHUN (author) / HUANG ZHANGFENG (author) / YANG XIANMENG (author) / LI CHAOXIONG (author) / HUANG XINYI (author)
2021-03-16
Patent
Electronic Resource
Chinese
Ceramic composite powder for thermal spraying and preparation method of ceramic composite powder
European Patent Office | 2021
Preparation method of chromium oxide and titanium oxide composite powder for plasma spraying
| European Patent Office | 2021
Plasma spraying ceramic powder, ceramic composite coating and preparation method thereof
| European Patent Office | 2024
Hollow ceramic thermal spraying powder and preparation method thereof
| European Patent Office | 2020
Nano ceramic composite spraying powder and preparation method thereof
| European Patent Office | 2022