NIMS Develops Porous Anchor Technology for Strong Bonding of Dissimilar Materials

The National Institute for Materials Science (NIMS) in Japan has unveiled a new bonding technology that creates a porous anchor layer through a simple solution-coating and drying process. This method enables strong adhesion between dissimilar materials that are traditionally difficult to join, achieving bond strengths exceeding 7 MPa. The innovation combines two mechanisms: chemical affinity to one surface and physical interlocking with tiny pores on the other. By using a hybrid approach, the porous layer acts as a versatile intermediary, expanding possibilities for multi-material design in industries such as automotive, electronics, and aerospace. The technique is notable for its simplicity and scalability, as it avoids complex surface treatments or high-temperature processes. NIMS researchers confirmed the effectiveness across various material combinations, highlighting the potential to reduce manufacturing costs and improve product performance. This breakthrough could accelerate the development of lightweight, high-strength components and enable new applications where material compatibility was previously a barrier. The technology offers a practical path toward more sustainable and efficient manufacturing by enabling the use of optimal materials in each part of a product without sacrificing joint integrity.