Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Chromium oxide powder and coating preparation method
The invention discloses chromic oxide powder and a chromic oxide coating preparation method, and the chromic oxide powder preparation method comprises the following steps: respectively weighing chromic anhydride sintered powder, a binder and deionized water according to a ratio, uniformly mixing the weighed chromic anhydride sintered powder, binder and deionized water, and pressing into a green body, the binder being an alcohol or a saccharide; the blanks are stacked and loaded into a gas shuttle type kiln, the blanks are sintered through high-temperature reaction under the reducing atmosphere, and chromic oxide crystal blanks are obtained; and crushing, washing and screening the chromium oxide crystal embryo to obtain chromium oxide powder. The method is simple in process, low in cost and environmentally friendly, continuous production can be met, small-scale intermittent production can be achieved, the chromium oxide powder obtained through the method is high in single crystal proportion and round in particle shape, a compact thermal spraying coating can be obtained more easily, and the coating is more excellent in abrasion resistance, corrosion resistance, high temperature resistance and the like.
本发明公开了一种氧化铬粉末及氧化铬涂层制备方法，氧化铬粉末制备方法包括如下步骤：按配比分别称量铬酸酐烧结粉、粘结剂和去离子水，将称量好的铬酸酐烧结粉、粘结剂和去离子水均匀混合并压制成坯体，所述粘结剂为醇类或糖类；将坯体堆叠装入燃气梭式窑炉，在还原气氛下高温反应烧结坯体获得氧化铬晶胚；将氧化铬晶胚破碎、洗涤和筛选获得氧化铬粉末。本发明的方法工艺简单，成本低，环保，且既能满足连续化生产，又能小规模间歇性生产，本发明方法获得的氧化铬粉末，单晶比例较高，颗粒形状圆润，更利于获得致密的热喷涂涂层，涂层的耐磨、防腐、耐高温等性能更加优异。
Chromium oxide powder and coating preparation method
The invention discloses chromic oxide powder and a chromic oxide coating preparation method, and the chromic oxide powder preparation method comprises the following steps: respectively weighing chromic anhydride sintered powder, a binder and deionized water according to a ratio, uniformly mixing the weighed chromic anhydride sintered powder, binder and deionized water, and pressing into a green body, the binder being an alcohol or a saccharide; the blanks are stacked and loaded into a gas shuttle type kiln, the blanks are sintered through high-temperature reaction under the reducing atmosphere, and chromic oxide crystal blanks are obtained; and crushing, washing and screening the chromium oxide crystal embryo to obtain chromium oxide powder. The method is simple in process, low in cost and environmentally friendly, continuous production can be met, small-scale intermittent production can be achieved, the chromium oxide powder obtained through the method is high in single crystal proportion and round in particle shape, a compact thermal spraying coating can be obtained more easily, and the coating is more excellent in abrasion resistance, corrosion resistance, high temperature resistance and the like.
本发明公开了一种氧化铬粉末及氧化铬涂层制备方法，氧化铬粉末制备方法包括如下步骤：按配比分别称量铬酸酐烧结粉、粘结剂和去离子水，将称量好的铬酸酐烧结粉、粘结剂和去离子水均匀混合并压制成坯体，所述粘结剂为醇类或糖类；将坯体堆叠装入燃气梭式窑炉，在还原气氛下高温反应烧结坯体获得氧化铬晶胚；将氧化铬晶胚破碎、洗涤和筛选获得氧化铬粉末。本发明的方法工艺简单，成本低，环保，且既能满足连续化生产，又能小规模间歇性生产，本发明方法获得的氧化铬粉末，单晶比例较高，颗粒形状圆润，更利于获得致密的热喷涂涂层，涂层的耐磨、防腐、耐高温等性能更加优异。
Chromium oxide powder and coating preparation method
氧化铬粉末及涂层制备方法
ZHANG GUIHUA (Autor:in)
14.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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