Anti-oxidation heat-resistant alloy and preparation method

US12270095B2 · kind B2 · utility

Assignee

• QINGDAO NPA INDUSTRY CO., LTD. · CN

Inventors

• Heli LUO · Beijing, CN
• Xinglei Wang · Baoding, CN
• Shangping LI · Beijing, CN
• Zhaoxiong GU · Pingdu, CN
• Jiantao Wang · Shanghai, CN
• Lijuan WEI · Pingdu, CN
• Fajie YIN · Beijing, CN
• Zhenhua Wang · Kawasaki, JP

Key dates

• Filing date: Sep 12, 2019
• Grant date: Apr 8, 2025
• Expiry date: Oct 5, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C8/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure relates to an oxidation-resistant heat-resistant alloy and a preparing method. The oxidation-resistant heat-resistant alloy of the present disclosure, by mass percentage, includes: 2.5%-6% of Al, 24%-30% of Cr, 0.3%-0.55% of C, 30%-50% of Ni, 2%-8% of W, 0.01%-0.2% of Ti, 0.01%-0.2% of Zr, 0.01%-0.4% of Hf, 0.01%-0.2% of Y, 0.01%-0.2% of V, N<0.05%, O<0.003%, S<0.003%, and Si<0.5%, the balance being Fe and inevitable impurities; wherein merely one of Ti and V is comprised. The method for preparing the oxidation-resistant heat-resistant alloy includes: smelting with inactive element materials→refining→adding mixed rare earth→adding slag→alloying active elements.