Wear-corrosion resistance TiCN-based coatings

被引：0
|
作者：
Podchernyaeva, I.A. [1 ]
Panasyuk, A.D. [1 ]
Evdokimenko, Y.I. [1 ]
Kisel', V.M. [1 ]
Katashinskij, V.P. [1 ]
Korol', A.A. [1 ]
Frolov, G.A. [1 ]
Yuga, A.I. [1 ]
机构：
[1] Inst. Problem Materialovedeniya, NAN Ukrainy, Kiev, Ukraine
来源：
Poroshkovaya Metallurgiya | 2001年 / 5-6期
关键词：
Binders - Corrosion resistance - Nickel alloys - Protective coatings - Spraying - Titanium carbide - Titanium nitride - Wear resistance;
D O I：
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中图分类号：
学科分类号：
摘要：
The composition, structure and properties of HVOF-coatings obtained under spraying of composite powders based on TiCN with SiC, AlN, SiC-AlN/Al2O3 additives are investigated. Metallographic, petrographic, XRD, EPMA and SEM analyses are applied for study of the working coating surfaces. The coatings of 200 μm thickness had a typical fine-dispersion lamellar structure with an alternation of layers, enriched with titanium, and Ni-Cr alloy, The developed coatings exceeded the standard WC+8% Co alloy on tribological characteristics: under dry friction at the load of 2 MPa and sliding velocities in the range of 5-15 m/s the friction coefficient is 0.17-0.11, wear - 3.4 - 8.5 μm/km. The high resistance to oxidation of the coatings materials is conditioned by availability in an outer scale layer of the Al2SiO5, (Cr,Al)2O3, Al2TiO5 high-temperature compounds preventing from oxygen diffusion into the base. The mass gain of the coating material for TiCN-SiC-AlN-based composite is 1.42 mg/cm2 at 1450°C.
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页码：57 / 68
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