Synthesis and characterization of Ti2AlC and Ti3AlC2 MAX phase materials as electrical conductive, anticorrosive and anti-wear protective coatings

Acronym

P_MAX-COAT

Consortium Coordinator

Grieseler, Rolf

Start Date

October 1, 2021

End Date

September 30, 2022

Status

https://purl.org/pe-repo/concytec/estadoProyecto#concluido

Tipo de proyecto

https://purl.org/pe-repo/ocde/tipoProyecto#investigacionBasica

Description

Each year, trillions of US dollars are lost world wide due to materials loss in processes such as wear and corrosion. Therefore, material scientists are constantly searching for new interesting materials that might minimize these effects. In many cases no new base materials are required, moreover in most of the cases a coating is applied to the base material surface to obtain the desired corrosion protection as well as a low wear rate. An interesting group of materials for corrosion and wear protective coatings are MAX phases. These are ternary carbides or nitrides that exhibit high elastic stiffness, relatively low thermal expansion coefficients as well as good thermal and electrical conductivity on one hand and good thermal and chemical stability on the other hand. Different applications might be considered for these materials especially in areas such as electrode materials for renewable energy conversion and storage, coatings in harsh chemical environments, high- temperature structural applications, rotating electrical contacts and bearings. In this project two types of Ti-Al-C based MAX phases (Ti2AlC and Ti3AlC2) will be synthesized as coatings via magnetron sputtering and characterized. As substrates silicon and stainless steel will be coated. The tribological properties of MAX phase coatings as well as the electrochemical behavior will be analyzed. The results will be compared between uncoated and coated materials for moderate wear conditions (normal load up to maximum 5N). The corrosion tests will be conducted in NaCl 3.5% as well as 1M acidic (H2SO4) and alkaline (NaOH) media.

Keywords

Fases MAX

;

Recubrimientos conductores

;

Protección anticorrosiva

;

Resistencia al desgaste

Área de conocimiento

Engineering and technology

Campo OCDE

https://purl.org/pe-repo/ocde/ford#2.05.01