Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1659013 | Surface and Coatings Technology | 2010 | 6 Pages |
Abstract
Highly accelerated powder particles obtained by low-frequency pulsed detonation spraying (LFPDS), high-frequency pulsed detonation spraying (HFPDS), and high-current pulsed plasma spraying (HCPPS) were applied with the aim to deposit dense protective silicon nitride coatings that adhere well to steel and nickel superalloy surfaces. The silicon nitride-based feedstock powders comprise α-silicon nitride with sintering additives such as alumina, yttria and minor amounts of aluminum nitride and/or silica and magnesia. Coatings were characterized by testing their critical wear path length, tensile adhesion strength, microindentation hardness, salt-spray corrosion and thermoshock resistances, and friction coefficient (pin-on-disk).
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Authors
Robert B. Heimann,