Microstructure and Wear Properties of HVAF Sprayed Cu-Zr-Al-Ag-Co Amorphous Coatings at Different Spray Temperatures
نویسندگان
چکیده
Wear-resistant Cu-Zr-Al-Ag-Co amorphous coatings were fabricated by high-velocity air-fuel spray technology using (Cu43Zr47Al7Ag3)99.5Co0.5 powder at different temperatures (i.e., 645, 725, and 805 K). The feedstock powders (98.6 wt.% phase) produced a gas atomization method. Thermal properties microstructure of the comparably investigated differential scanning calorimeter, electron microscope, transmission microscopy techniques. Wear studied dry sliding wear tester under linear reciprocating in ball-on-plate mode GCr15 ball as counterpart room temperature air. A large fraction phase (~67.5 wt.%) crystalline phases (ZrO2, Al2.5Cu0.5Zr, AlZr3) are found coating (725 K) between glass transition (Tg) onset crystallization (Tx). In addition, also exhibits highest Vickers hardness (554 HV0.1), bonding strength (59.3 MPa), relatively low porosity (1.65%), superior resistance. mechanism is primarily abrasive slight adhesive wear.
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ژورنال
عنوان ژورنال: Coatings
سال: 2022
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings12040458