Naslov
The low temperature aluminising kinetics of hot-work tool steels

Autori
Matijević, Božidar ; Kumić, Ivan ; Belić, Tomislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 3th International Conference on "Heat Treatment and Surface Engineering of Tools and Dies" / Schneider, Reinhold - Leoben : The Austrian Societyfor Metallurgy and Materials, 2011, 99-107

ISBN
978-3-9503135-1-2

Skup
International Conference on "Heat Treatment and Surface Engineering of Tools and Dies" (3 ; 2011)

Mjesto i datum
Wels, Austrija, 23.03.2011. - 25.03.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aluminising; design experiments; aluminide coatings

Sažetak
Conventional aluminising procedures are mostly conducted at temperatures well above 900 °C, and can last for hours. When applied to hot-work tool steels, aluminising has to be done at notably lower temperatures in order to prevent grain growth and carbide formation, and to improve creep resistance. The kinetics of aluminium coating formation on hot-work tool steels was studied in the temperature range of 550 to 610 °C. The pack Al content was varied from 5 to 15 wt pct and aluminising time from 1 to 9 hours. The halide activator AlCl3 was applied. A series of statistically designed experiments were conducted to determine how key process factors influence the aluminide coating formation. A Box - Behnken experimental design was used to evaluate three process factors at three levels. The microstructures of coated samples were analysed by a scanning electron microscope (SEM). Glow Discharge Optical Spectroscopy (GDOS) and energy-dispersive X-ray spectroscopy (EDX) were employed to investigate element distributions in the coating layer.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Metalurgija, Strojarstvo

POVEZANOST RADA