Aero-Engine Power has obtained patents related to thermal barrier coating preparation, and the bimetallic layer thermal barrier coating reduces mutual diffusion, extending the coating lifespan.

April 2 News, the State Intellectual Property Office’s information shows that China Aero-Engine Group Power Co., Ltd. has applied for a patent titled “Preparation Method of a Thermal Barrier Coating,” with authorization announcement number CN117488247B, granted on March 31, 2026. The application publication number is CN117488247A, application number CN202311438593.5, with a publication date of March 31, 2026, and an application date of October 31, 2023. Inventors include Wang Yufeng, Kou Luwen, Wu Pengjia, Zhang Hua, Yang Chenxi, Zhao Zhixiong, Lan Xiaogang, Sun Jiawei. The patent agency is Xi’an Tongda Patent Agency Co., Ltd., with patent agent Ma Guixiang. Classification numbers are C23C14/16, C23C14/08, C23C14/32, C23C14/30, C22C30/00, C22C21/02, C23C14/54.

The patent abstract indicates that the invention relates to the technical field of high-temperature oxidation-resistant coatings for turbine blades, specifically a thermal barrier coating and its preparation method, including a first metal layer, second metal layer, first ceramic layer, and second ceramic layer sequentially arranged on the surface of high-temperature alloys. By weight percentage, the first metal layer includes 20%-25% Co, 22%-24% Cr, 13%-15% Al, 1.2%-1.4% Y, 0.3%-0.5% Hf, and 0.3%-0.5% Si, with the remainder Ni; the second metal layer includes 12%-15% Si and 6%-8% Y, with the remainder Al. The first ceramic layer is YSZ ceramic, and the second ceramic layer is La2Ce2O7 and its modified ceramic material. The double-metal layer structure achieves a concentration gradient of Al content decreasing from the outer surface inward, effectively reducing mutual diffusion of Al elements with the substrate, preventing TCP phase formation, ensuring sufficient Al content throughout the structure, and extending coating life. This addresses the low lifespan issue of existing thermal barrier coatings.

China Aero-Engine Group Power was established on December 23, 1993, and listed on the Shanghai Stock Exchange on April 8, 1996. Its registered and operational location is in Xi’an, Shaanxi Province. It is a leading domestic enterprise in aerospace engines, focusing on manufacturing aerospace engines, with strong R&D and production capabilities, highlighting its investment value.

Main business includes manufacturing of aerospace engines and derivative products, foreign trade subcontracting of civil aviation engine parts, and some non-aviation products. The industry classification is Defense Military Industry - Aerospace Equipment II - Aerospace Equipment III, involving concepts such as unmanned combat aircraft, new combat capabilities, and aerospace engines.

In 2025, China Aero-Engine Group Power achieved revenue of 46.33B yuan, ranking first among 21 industry companies, far above the industry average of 11.47B yuan and median of 3.7B yuan. The second-ranked company, AVIC Shenyang Aircraft, had 44.66B yuan. The main business revenue was 43.48B yuan from aerospace engines and derivatives, accounting for 93.84%. Net profit in 2025 was 738 million yuan, ranking sixth industry-wide, with the top company AVIC Shenyang Aircraft earning 3.54B yuan, the second AVIC Aircraft with 1.34B yuan, industry average 532 million yuan, median 252 million yuan.

Recent patent information of China Aero-Engine Group Power is as follows:

(Note: The table continues with the remaining patents listed similarly.)