Wear resistance of HVOF sprayed coatings from mechanically activated thermally synthesized Cr3C2–Ni spray powder

Proceedings of the Estonian Academy of Sciences

Heikki Sarjas¹  Kristjan Juhani¹  Petri Vuoristo¹  Ville Matikainen¹  Mart Viljus¹  Priit Kulu¹ 

[1] $$

关键词: chromium carbide;    spray powder;    mechanically activated thermal synthesis;    HVOF spray;    wear resistance;   

DOI  :  10.3176/proc.2016.2.10

学科分类：化学（综合）

来源: Teaduste Akadeemia Kirjastus

【 摘 要 】

In the current study a Cr3C2–Ni spray powder was produced by mechanically activated thermal synthesis. The following aspects were studied: (a) production and characteristics of spray powders, (b) spraying and characteristics of coatings by HVOF, and (c) abrasive wear resistance. A HVOF spray system Diamond Jet Hybrid 2700 (propane hybrid gun from Sulzer Metco) was used for deposition. Coating thickness was approximately 350–400 Î¼m. The structure and composition of the coatings were determined by SEM and the phase composition by XRD methods. Coating surface hardness and microhardness in the cross-section were measured. Abrasive rubber-wheel wear (ARWW) and abrasive erosive wear (AEW) were tested. The wear resistance of the coatings produced from an experimental powder was comparable to that of a similar commercial one.

【 授权许可】

Unknown