Study on the Use of a Stainless Steel Crucible and a Platinum-Plated Alumina Crucible in the Process of Obtaining Nanopowders in a Microwave Field

The paper presents a study on the use of susceptors in a microwave heating system for obtaining nanopowders. In order to optimize the melting process, as well as to ensure constructive and functional advantages of the entire built system, research was conducted on the construction of the stainless steel crucible and on the realization of the alumina crucible coated with a thin layer of platinum. The results obtained from the numerical analysis of the electromagnetic field were validated by experimental determinations made using the built experimental equipment. The results show that the use of the crucible made of stainless steel has advantages over that made of alumina coated with a thin layer of platinum, both in terms of the efficiency of the microwave heating process and in terms of efficiency and durability of the entire built system.