Entegris is moving from supplying slurries and pads into the materials that sit between a hot die and its heat spreader, betting that the package rather than the transistor becomes the limit on AI accelerators.
The company has closed its purchase of Advanced Abrasives, a New Jersey producer of diamond-based precision super-abrasives used in polishing hard substrates. That adds to existing silicon carbide CMP work covering slurries, pads, cleans and surface conditioning.
Entegris will put a new manufacturing line in Taiwan to bring the silicon carbide products to market, while keeping U.S. research and development on next-generation thermal interface materials.
De Beers’ synthetic diamond arm joins the effort
The second piece is a long-term development partnership with Element Six, the synthetic diamond business inside De Beers Group. The work targets wafer-level and heterogeneous integration approaches meant to lower the thermal resistance between stacked logic and memory, and to do it at a cost and complexity a fab can absorb.
Olivier Blachier, who runs materials solutions and is chief innovation officer, framed the shift as a move away from conventional heat spreaders toward engineered interfaces.
The company will lay out the strategy at a capital markets day in New York on November 9. Heat density is the number that decides how hard an AI package can be driven, and materials suppliers have so far been peripheral to that argument. Entegris wants a seat at it.
