稀土到底多重要？少了它，美国六代机或只能是张PPT

Core Viewpoint - China's J-36 fighter jet has successfully completed five test flights, while the U.S. sixth-generation fighter jet program appears to be stalled, potentially remaining at the conceptual stage indefinitely [1] Group 1: U.S.-China Trade and Rare Earths - The U.S. trade war initiated by Trump has significantly impacted the U.S. aerospace industry, revealing a critical dependency on China's control over rare earth elements [3] - In response to the trade war, China's Ministry of Commerce implemented export license controls on seven heavy rare earth elements, effectively targeting U.S. military contractors like Lockheed Martin and Boeing [3][4] - China's strong countermeasures are attributed to the contributions of Xu Guangxian, known as the "Father of Rare Earths," who developed a method to significantly improve the extraction and purification of rare earth elements [4][5] Group 2: China's Rare Earth Dominance - China holds approximately 44 million tons of rare earth oxide reserves, accounting for 34% of global reserves, with approved mining quotas reaching 240,000 tons in 2023 [5] - The global rare earth industry is heavily reliant on China, which produces about 70% of rare earth minerals and possesses 85% of deep processing capabilities [5] - From 1950 to 2019, China submitted over 26,000 patents in the rare earth field, far surpassing Japan and the U.S., indicating a strong technological and industrial advantage [5] Group 3: Impact on U.S. Military Technology - Rare earth elements are essential for modern high-tech equipment, including the F-35 fighter jet, which requires 408 kg of rare earth materials for optimal performance [7] - The U.S. sixth-generation fighter jet program is hindered by its reliance on rare earths, making progress toward operational aircraft unlikely without access to these materials [9] Group 4: U.S. Response and Challenges - The U.S. is attempting to revive the Mountain Pass mine and form a "rare earth alliance" with Australia and Canada, but these efforts have not yielded significant results [9][11] - Despite investing billions, the U.S. lacks the deep processing capacity to independently establish a rare earth supply chain, relying instead on Chinese partners for purification [11] - Companies like Tesla are reducing rare earth usage in their electric motors, but this compromises performance, while military firms are exploring alternative materials, which may also reduce efficiency [11]