critical raw material perspective
Sebastian Baloš (Avtor), Miroslav D. Dramićanin (Avtor), Petar Janjatovic (Avtor), Ivan Zabunov (Avtor), Damjan Klobčar (Avtor), Matija Bušić (Avtor), Maria Luisa Grilli (Avtor)

Povzetek

Besides a wide application in corrosion protection, wear resistance increase, providing thermal properties and power conversion, oxide coatings have found an alternative application in welding technology as catalysts of the tungsten inert gas (TIG) welding process. In this paper, the novel approach of fabricating a coating containing nanoparticles based on nanosized SiO2 and TiO2 and their mixtures was applied to the austenitic stainless-steel base metal. It was found that coatings increased depths of penetration, enabling a consumable-free welding. Using this method, the use of several critical and near-critical raw materials (e.g., Si and Cr), as well as the relatively expensive Ni can be completely avoided. The most effective coating in terms of weld penetration consisted of a mixture of nanoparticles, rather than unary oxide coatings based on nanoparticles. A model for liquid weld metal flow is proposed based on the metallographic examination of recrystallized grains and microhardnesses measured near the weld metal, supporting the reversed Marangoni convection theory.

Ključne besede

oksidne prevleke;nanodelci;varjenje TIG;globina penetracije;oxide coating;nanoparticles;TIG welding;penetration depth;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 621.791(045)
COBISS: 16623131 Povezava se bo odprla v novem oknu
ISSN: 2075-4701
Št. ogledov: 241
Št. prenosov: 79
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: oksidne prevleke;nanodelci;varjenje TIG;globina penetracije;
Vrsta dela (COBISS): Članek v reviji
Strani: f. 1-12
Letnik: ǂVol. ǂ9
Zvezek: ǂiss. ǂ5
Čas izdaje: 2019
DOI: 10.3390/met9050567
ID: 13729710