Influence of Rare Earth on the High-Temperature Sliding Wear Behavior of WC-12Co Coating Prepared by HVOF Spraying

2018 ◽  
Vol 27 (7) ◽  
pp. 1143-1152 ◽  
Author(s):  
Yan Liu ◽  
Zongqiu Hang ◽  
Guiying Yang ◽  
Hao Fu ◽  
Naiyuan Xi ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Hvof Spraying

Influence of wire-EDM on high temperature sliding wear behavior of WC10Co(Cr/V) cemented carbide

2013 ◽  
Vol 41 ◽  
pp. 198-209 ◽  
Author(s):  
Y. Pérez Delgado ◽  
P. De Baets ◽  
K. Bonny ◽  
V. Carretero Olalla ◽  
J. Vleugels ◽  
...  
Keyword(s):  
High Temperature ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Cemented Carbide ◽  
Wire Edm

High temperature sliding wear behavior of press-extruded AA6061/fly ash composite

2010 ◽  
Vol 527 (6) ◽  
pp. 1501-1509 ◽  
Author(s):  
P.R.S. Kumar ◽  
S. Kumaran ◽  
T. Srinivasa Rao ◽  
S. Natarajan
Keyword(s):  
High Temperature ◽  
Fly Ash ◽  
Sliding Wear ◽  
Wear Behavior

scholarly journals Sliding Wear Behavior of Fe-Al Coatings at High Temperatures

Coatings ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 268 ◽  
Author(s):  
Núria Cinca ◽  
Slawomir Cygan ◽  
Cezary Senderowski ◽  
Lucyna Jaworska ◽  
Sergi Dosta ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperatures ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Vital Role ◽  
Wear Rates ◽  
Spray Coatings ◽  
Coating Failure ◽  
Oxygen Fuel ◽  
Sprayed Coatings

The medium and high temperature tribological behavior of different iron aluminide thermal spray coatings was investigated. Several powders synthesized through different routes (ball milling, self-decomposition, and self-propagating high-temperature sintering (SHS)) were evaluated. High heterogeneity of conventional High Velocity Oxygen Fuel (HVOF) coatings plays a vital role in their sliding performance, but as long as their integrity is preserved under high temperature oxidizing conditions, the wear rates are found to be acceptable, as it occurs in the case of ball milled Fe-40Al (at.%) powder. The friction phenomenon and wear mechanisms were analyzed in detail through the wear track morphology, contact surface, and friction coefficients. The occurrence of brittle phases in the sprayed coatings, which are also present when tested at high temperatures, appeared to be crucial in accelerating the coating failure.

High-temperature sliding wear behavior of an intermetallic γ–based TiAl alloy

Wear ◽  
2019 ◽  
Vol 426-427 ◽  
pp. 341-347 ◽  
Author(s):  
L. Mengis ◽  
C. Grimme ◽  
M.C. Galetz
Keyword(s):  
High Temperature ◽  
Sliding Wear ◽  
Tial Alloy ◽  
Wear Behavior

Wear Resistance of Internal WC-CoCr Coatings Produced by High Velocity Oxy-Fuel Spraying

2012 ◽  
Vol 188 ◽  
pp. 416-421 ◽  
Author(s):  
Ioan Florin Secosan ◽  
Ion Dragoş Uţu ◽  
Viorel Aurel Şerban ◽  
Waltraut Brandl
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Complex Function ◽  
Test Method ◽  
Ring Test ◽  
Hvof Spraying ◽  
Diverse Range ◽  
Metallic Component ◽  
Powder Particles

Thermal spray coatings, and in particular those applied by HVOF process, are being used in a diverse range of engineering applications to extend component life by retarding wear and corrosion degradation [1]. Coatings performance is strongly dependent on microstructure [2]. The mechanical properties are a complex function of carbide size, shape and distribution, matrix hardness and toughness and the presence of various reaction products. This paper is focused on the wear resistance of WC-based coatings containing 10 mass% Co and 4 mass% Cr as the metallic binder, involving a heat-treated steel rings as substrate, a hot rolled product of structural steel in accordance with DIN EN 10113-2 for steel construction, detaining a tensile strength about 520-680 N/mm2. A feedstock powder of WC-CoCr 86 10 4 agglomerated/sintered was used for coatings production. It has good properties, such as: high resistance against oxidation and corrosion (due to the metallic component), good wear resistance (due to the ceramic component) and with a hardness in range of 1000-1300HV. The coatings have been produced by HVOF spraying of four different WC-CoCr grain size of powder particles, such as:sample 1 (-45+22µm), sample2 (-22+5µm), sample 3 (-10+2µm) and sample 4 (-2+0.5µm), using an ID CoolFlow mono gun developed especially for internal surfaces. This type of gun is a HP HVOF system for high pressure, but cold internal HVOF spraying. The morphology and the structure of the sprayed coatings were investigated by means of scanning electron microscopy (SEM/EDS) and the qualitative and quantitative phase composition of those coatings were determined applying the x-ray diffraction technique (XRD). In order to determine the sliding wear resistance of the coated samples, it was used the pin on ring test method under dry condition, with and without compressed air. This method consists into a stationary ball loaded against a ring sample in relative motion. The sliding wear rate of the tested samples was calculated from the volume of material lost during the test. The investigated samples were examined by means of stereo and light microscopy before and after exposure to wear tests. Based on the obtained results it was demonstrated that the coatings obtained from -10+2µm powder particles exhibit an optimal wear behavior when exposed to severe conditions.

High Temperature Sliding Wear Behavior and Mechanisms of Cold-Sprayed Ti And Ti-TiC Composite Coatings

Wear ◽  
2021 ◽  
pp. 203746
Author(s):  
M.V. Koricherla ◽  
T.B. Torgerson ◽  
S.A. Alidokht ◽  
V.N.V. Munagala ◽  
R.R. Chromik ◽  
...  
Keyword(s):  
High Temperature ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Composite Coatings
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