Surface treatment method and device treated thereby

US10138434B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Shizhong Wang · Qingdao, CN
• Wenqing Peng · Shanghai, CN
• Lawrence Bernard Kool · Clifton Park, US
• Nan HAO · Hangzhou City, CN
• Wusheng Xu · Shanghai, CN
• Minghu Guo · Shanghai, CN
• Hong Zhou · Shanghai, CN
• Yanfei Gu · Shanghai, CN
• Zhaohui Yang · Beijing, CN

Key dates

• Filing date: Nov 6, 2014
• Grant date: Nov 27, 2018
• Expiry date: Jun 24, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L58/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A surface treatment method includes: contacting a substrate with a treatment material, the substrate comprising a metallic element, the treatment material comprising an alkaline earth metal element, an alkali metal element, or any combination thereof; and forming on the substrate a surface layer comprising a first oxide of the alkaline earth metal element, the alkali metal element, or any combination thereof and a second oxide of the metallic element. A device has: a substrate layer comprising a metallic element; and a surface layer comprising a first oxide of an alkaline earth metal element, an alkali metal element, or any combination thereof, and a second oxide of the metallic element.