Plasma Spraying with Wire Feeding: A Facile Route to Enhance the Coating/Substrate Interfacial Metallurgical Bonding
نویسندگان
چکیده
Thermal spray coatings are widely used in many applications, and the adhesion effect at coating/substrate interface plays an important role during service life. The thermal spraying coating substrate is primarily combined by a mechanical seizure effect. In this work, strategy to generate interfacial metallurgical bonding proposed. Plasma with wire feeding was adopted increase size of sprayed particles, clearly formed between deposited particles (304 stainless-steel 7075 aluminum alloy). Interface reaction can be found both NiAl/7075 NiAl/304 interfaces. Typical Al-Al3Ni eutectic phase higher microhardness interface. adhesive strength significantly improved 82.67 ± 3.96 MPa 64.45 2.84 MPa, respectively, for NiAl on 304 substrates through tensile tests (TAT) without surface roughening pretreatment. This technique shows promising aspect application coatings.
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ژورنال
عنوان ژورنال: Coatings
سال: 2022
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings12050615