Intermetallics as innovative CRM-free materials

E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions

Novák, Pavel^1 ; Jaworska, Lucyna^2 ; Cabibbo, Marcello^3

Department of Metals and Corrosion Engineering, University of Chemistry and Technology Prague, Technická 5, Prague

16628, Czech Republic^1

Institute of Advanced Manufacturing Technology, Wroclawska 37A, Krakow

30-011, Poland^2

DIISM/Università Politecnica Delle Marche, Via Brecce Bianche, Ancona

60131, Italy^3

关键词: Aluminides;    Corrosion-resistant materials;    Critical raw materials;    European economy;    Free materials;    High hardness;    Manufacturing process;    Tool materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/329/1/012013/pdf
DOI  :  10.1088/1757-899X/329/1/012013

来源: IOP

【 摘 要 】

Many of currently used technical materials cannot be imagined without the use of critical raw materials. They require chromium (e.g. in stainless and tool steels), tungsten and cobalt (tool materials, heat resistant alloys), niobium (steels and modern biomaterials). Therefore there is a need to find substitutes to help the European economy. A promising solution can be the application of intermetallics. These materials offer wide variety of interesting properties, such as high hardness and wear resistance or high chemical resistance. In this paper, the overview of possible substitute materials among intermetallics is presented. Intermetallics based on aluminides and silicides are shown as corrosion resistant materials, composites composed of ceramics in intermetallic matrix as possible tool materials. The manufacturing processes are being developed to minimize the disadvantages of these materials, mainly the room-temperature brittleness.