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Lanthanide doped nanocrystalline ceria coating for increasing oxidation resistance of stainless stee 发明授权

2023-01-21 3570 1006K 0

专利信息

申请日期 2025-07-10 申请号 US12329083
公开(公告)号 US8435602B1 公开(公告)日 2013-05-07
公开国别 US 申请人省市代码 全国
申请人 Sudipta Seal
简介 Disclosed is a method of applying to stainless steel a protective coating effective in increasing oxidation resistance, the method includes cleaning and pre-oxidizing in hot dry air, cooling and coating the cooled stainless steel with nanocrystalline ceria particles doped with a lanthanide metal. Cleaning may include ultrasound and optionally polishing. Cooling is conducted in air and coating is preferably effected by dipping the stainless steel into a composition containing the nanocrystalline ceria particles. The invention includes a coating effective for retarding oxidation of stainless steel, the coating comprising nanocrystalline ceria particles doped with a lanthanide, a preferred lanthanide being lanthanum and preferred nanocrystalline ceria particles are approximately 3 nm in size and contain from about 2 to 40 atom % of the dopant.


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