Alumina: The Critical Choke Point for Two Trillion-Dollar Markets

2025-07-30

Alumina has long played an important role in the national economy as a raw material for aluminum products and as a supplementary material in traditional industries such as petrochemicals and machinery. Currently, with the continuous emergence and rapid development of emerging industries such as communication, new energy, and semiconductors, the demand for high-performance new materials has become increasingly strong. Certain high-end alumina products have gained traction in this context, especially in the trillion-dollar markets of new energy and semiconductors, where alumina has become a critical foundational material.

1.The two major trillion-dollar markets.

Semiconductor

With the continuous growth of market applications in fields such as artificial intelligence, 5G communication, the Internet of Things, cloud computing, automotive electronics, robotics, and drones, the semiconductor industry is experiencing a surge in market prosperity. According to data from various market research institutions, the semiconductor market size is projected to see significant growth in 2024. For instance, data from the World Semiconductor Trade Statistics organization (WSTS) indicates that the global semiconductor market size will reach 4.5762 trillion yuan in 2024, marking a 19% year-on-year increase. Among this, the Chinese semiconductor market size is expected to grow by 20%, accounting for 30% of the global market.

WSTS predicts that the global market will grow by 11.2% in 2025, reaching 697 billion dollars. Deloitte also forecasts that sales will be 697 billion dollars in 2025 and points out that the industry is expected to reach a sales target of 1 trillion dollars by 2030.

New Energy Market

In the field of new energy vehicles, since 2021, China’s new energy vehicles have demonstrated a strong upward development trend, with annual production and sales growth rates exceeding 30% for four consecutive years. In 2024, the annual production and sales volume of new energy vehicles surpassed the 10 million mark for the first time, reaching 12.888 million and 12.866 million, respectively, with year-on-year growths of 34.4% and 35.5%. The share of new energy vehicles in total new car sales has risen to 40.9%, an increase of 9.3 percentage points compared to 2023. Forecasts suggest that the market size of China’s new energy vehicles is expected to reach 2.31 trillion yuan by 2025.In terms of batteries, according to data released by the Ministry of Industry and Information Technology, China's total lithium battery production is projected to reach 1,170 GWh in 2024, representing a year-on-year growth of 24%, with the total industry output value exceeding 1.2 trillion RMB.

2.The application of aluminum oxide in the semiconductor industry

Semiconductor Components

Alumina Ceramic Components possess excellent properties such as high hardness, high mechanical strength, exceptional wear resistance, resistance to high temperatures, high resistivity, and good electrical insulation performance. These features enable them to meet the complex performance requirements of semiconductor manufacturing under special environments such as vacuum and high temperature. They play an irreplaceable and important role in semiconductor manufacturing production lines, and their application covers nearly all semiconductor manufacturing equipment, making them key components of semiconductor production equipment. Classified by purpose, alumina ceramic components are primarily divided into categories such as ring and cylinder types, airflow guiding types, load-bearing and fixation types, gripping washer types, and module types.

（1).Circular Cylinder Category

In the etching phase, in order to reduce contamination of the wafer during the plasma etching process, corrosion-resistant high-purity aluminum oxide coatings or aluminum oxide Ceramics Are selected as protective materials for the etching chamber and the lining inside the chamber.

(2).Hand-Gripped Gaskets

During the transportation of wafers, ceramic robotic arms made from alumina ceramics are utilized, which are installed on wafer-handling robots. These robotic arms function as the hands of the robot, responsible for moving the wafers to designated locations, as their surfaces come into direct contact with the wafers. Given that wafers can be extremely susceptible to contamination from other particles, this process is typically conducted in a vacuum environment. Under these conditions, the majority of materials used for robotic arms generally struggle to perform their tasks; therefore, the materials used must be high-temperature resistant, wear-resistant, and possess high hardness. Due to the requirements of working conditions, arms are usually made from alumina ceramic materials of very high purity, while also ensuring the precision and surface roughness of the ceramic components. The common designs include clamping type, load-bearing type, vacuum suction type, and Bernoulli type.

(3)Ceramic substrate

Ceramic substrates stand out for their excellent insulation properties, high strength, low thermal expansion coefficient, outstanding chemical stability, and thermal conductivity, making them widely regarded in the integrated circuit packaging sector. Among them, aluminum oxide ceramic is a commonly used substrate material in the radio frequency and microwave electronics industry, due to its high dielectric constant that allows for circuit miniaturization. It also demonstrates good thermal stability with minimal temperature drift, high substrate strength, and chemical stability, outperforming most other oxide materials. It can be applied in various types of thick film circuits, thin film circuits, hybrid circuits, microwave component modules, and more. Additionally, aluminum oxide ceramic substrates are cost-effective (approximately one-tenth the price of aluminum nitride), with a mature production process, currently being the highest in output and most widely used.

(4)CMP polishing material

Currently, chemical mechanical polishing technology (CMP) is the only key technology capable of achieving global flattening and is widely applied in various processes such as semiconductor wafer polishing, shallow trench isolation, and copper interconnection. The abrasive particles primarily perform the mechanical function in CMP polishing through methods such as micro-cutting and scratching, making them essential materials in the CMP process. Polishing solutions account for 49% of the cost of CMP polishing materials, while abrasives constitute about 50%-70% of the cost of polishing solutions.The most commonly used abrasives today include SiO2, CeO2, and Al2O3. Among these, high-purity submicron spherical alumina powder serves as an abrasive in chemical mechanical polishing fluids, offering a high removal rate, rapid polishing, a lower likelihood of generating fine scratches on the polished surface, and a high finish, suitable for use in the polishing processes of semiconductors.Beyond this introduction, the applications of alumina in the new energy and semiconductor industries extend far beyond those mentioned. For instance, it is utilized in ceramic components such as relays, fuses, and sealing rings for new energy vehicles. In both the new energy and semiconductor sectors, there is a collective challenge regarding thermal management.

Apart from participating in thermal management as a heat dissipation substrate, alumina is often employed as a thermal conductive filler, fashioned into materials such as thermal paste and thermal gel, playing a crucial role in heat dissipation. In summary, alumina materials hold vast application prospects in the trillion-dollar markets of the new energy and semiconductor industries.