Ultrafast high-temperature heating in air

Ultrafast high-temperature heating methods based on the Joule heating of carbon heaters can dramatically shorten the time required for material synthesis/sintering. However, commonly used porous carbon heaters cannot provide stable high temperatures in air, limiting their applicability to the processing of atmosphe-resensitive materials. In this study, we present a novel configuration for ultrafast high-temperature heating in air using commercial graphite paper. This configuration enables stable high temperatures of similar to 1330-2230 degrees C in air, on the time-scale of minutes, and ultrafast heating rates, reaching similar to 10(4 )degrees C/min. We describe the mechanism behind the excellent performance of our proposed configuration, and further demonstrate its flexibility and controllability by considering ultrafast high-temperature sintering of ZnO ceramics with tunable microstructures using different heating profiles. Our configuration provides a complementary approach to simplifying the ultrafast high-temperature heating process, reducing costs, and meeting the requirements of synthesis/sintering in air.

Automated summary

In this study, a novel configuration for ultrafast high-temperature heating in air using commercial graphite paper is presented. This configuration enables stable high temperatures and ultrafast heating rates. By considering different heating profiles, ultrafast high-temperature sintering with tunable microstructures is demonstrated.