Corrosion behaviour of Mg-Al alloys with Al-11Si thermal spray coatings

2009 ◽  
Vol 60 (12) ◽  
pp. 939-948 ◽  
Author(s):  
A. Pardo ◽  
M. C. Merino ◽  
P. Casajús ◽  
M. Mohedano ◽  
R. Arrabal ◽  
...  
Keyword(s):  
Thermal Spray ◽  
Corrosion Behaviour ◽  
Al Alloys ◽  
Thermal Spray Coatings ◽  
Spray Coatings

scholarly journals Evaluation of the synergistic erosion-corrosion behaviour of HVOF thermal spray coatings

2016 ◽  
Vol 299 ◽  
pp. 37-48 ◽  
Author(s):  
Tom Peat ◽  
Alexander M. Galloway ◽  
Athanasios I. Toumpis ◽  
David Harvey
Keyword(s):  
Thermal Spray ◽  
Corrosion Behaviour ◽  
Thermal Spray Coatings ◽  
Spray Coatings ◽  
Hvof Thermal Spray ◽  
Erosion Corrosion

An Analysis of Environmental Factors Affecting Corrosion Behaviour of Thermal Spray Cermet Coatings

1998 ◽  
Author(s):  
T. Hodgkiess ◽  
A. Neville
Keyword(s):  
Thermal Spray ◽  
Corrosion Behaviour ◽  
Strong Dependence ◽  
Thermal Spray Coatings ◽  
Microscopical Examination ◽  
Material Loss ◽  
Factors Affecting ◽  
Spray Coatings ◽  
Aqueous Environments ◽  
Coating Durability

Abstract Primarily thermal-spray coatings have been developed to combat excessive degradation of components due to mechanical wear. However, these coatings are increasingly being required to function in aqueous environments where corrosive attack is possible. The durability of thermal spray coatings in terms of corrosion resistance is the focus of this paper. Two types of coatings have been studied ; High-Velocity Oxy-Fuel (HVOF) and thermal spray-fused. 'the HVOF coating was WC-Co-Cr and the spray-fused coatings were WC-Co based and Ni-Cr-Si-B. Samples have been exposed to aqueous environments at a range of different temperatures and of varying salinity (500ppm and 35,000ppm Total Dissolved Solids) in order to simulate freshwater and seawater environments. The detailed material loss and degradation mechanisms have been investigated using electrochemical-monitoring techniques supported by precise post-test microscopical examination using light microscopy, scanning electron and atomic force microscopy and x-ray microanalysis. The study has demonstrated that there is a strong dependence on coating durability for all the coatings as a function of temperature but salinity has a lesser effect. However there are interesting differences in the extent and detailed mechanisms of such effects between the different coatings.

Al/SiC thermal spray coatings for corrosion protection of Mg–Al alloys in humid and saline environments

2010 ◽  
Vol 204 (16-17) ◽  
pp. 2767-2774 ◽  
Author(s):  
R. Arrabal ◽  
A. Pardo ◽  
M.C. Merino ◽  
M. Mohedano ◽  
P. Casajús ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Thermal Spray ◽  
Al Alloys ◽  
Thermal Spray Coatings ◽  
Saline Environments ◽  
Spray Coatings

Corrosion Behavior of Mg-Al Alloys with Aluminum Thermal Spray Coatings in Humid and Saline Environments

CORROSION ◽  
2009 ◽  
Vol 65 (12) ◽  
pp. 817-830 ◽  
Author(s):  
R. Arrabal ◽  
A. Pardo ◽  
M. C. Merino ◽  
S. Merino ◽  
P. Casajús ◽  
...  
Keyword(s):  
Thermal Spray ◽  
Corrosion Behavior ◽  
Al Alloys ◽  
Thermal Spray Coatings ◽  
Saline Environments ◽  
Spray Coatings

scholarly journals Sliding Wear of Conventional and Suspension Sprayed Nanocomposite WC-Co Coatings: An Invited Review

2021 ◽  
Author(s):  
R. Ahmed ◽  
O. Ali ◽  
C. C. Berndt ◽  
A. Fardan
Keyword(s):  
Wear Rate ◽  
Thermal Spray ◽  
Sliding Wear ◽  
Failure Modes ◽  
Thermal Spray Coatings ◽  
Annual Growth Rate ◽  
Total Energy Consumption ◽  
Wear Performance ◽  
Wear Rates ◽  
Spray Coatings

AbstractThe global thermal spray coatings market was valued at USD 10.1 billion in 2019 and is expected to grow at a compound annual growth rate of 3.9% from 2020 to 2027. Carbide coatings form an essential segment of this market and provide cost-effective and environmental friendly tribological solutions for applications in aerospace, industrial gas turbine, automotive, printing, oil and gas, steel, and pulp and paper industries. Almost 23% of the world’s total energy consumption originates from tribological contacts. Thermal spray WC-Co coatings provide excellent wear resistance for industrial applications in sliding and rolling contacts. Some of these applications in abrasive, sliding and erosive conditions include sink rolls in zinc pots, conveyor screws, pump housings, impeller shafts, aircraft flap tracks, cam followers and expansion joints. These coatings are considered as a replacement of the hazardous chrome plating for tribological applications. The microstructure of thermal spray coatings is however complex, and the wear mechanisms and wear rates vary significantly when compared to cemented WC-Co carbides or vapour deposition WC coatings. This paper provides an expert review of the tribological considerations that dictate the sliding wear performance of thermal spray WC-Co coatings. Structure–property relationships and failure modes are discussed to grasp the design aspects of WC-Co coatings for tribological applications. Recent developments of suspension sprayed nanocomposite coatings are compared with conventional coatings in terms of performance and failure mechanisms. The dependency of coating microstructure, binder material, carbide size, fracture toughness, post-treatment and hardness on sliding wear performance and test methodology is discussed. Semiempirical mathematical models of wear rate related to the influence of tribological test conditions and coating characteristics are analysed for sliding contacts. Finally, advances for numerical modelling of sliding wear rate are discussed.

Effects of Phosphorus and Carbon Contents on Amorphous Forming Ability in Fe-based Amorphous Alloys Used for Thermal Spray Coatings

2013 ◽  
Vol 44 (6) ◽  
pp. 2573-2580 ◽  
Author(s):  
Jeonghyeon Do ◽  
Seungmun Jung ◽  
Hyuk-Joong Lee ◽  
Byeong-Joo Lee ◽  
Gil-up Cha ◽  
...  
Keyword(s):  
Thermal Spray ◽  
Amorphous Alloys ◽  
Thermal Spray Coatings ◽  
Spray Coatings

Effect of thermal spray coatings on wear behavior of high tensile steel applicable for tiller blades

2017 ◽  
Vol 4 (2) ◽  
pp. 95-103 ◽  
Author(s):  
Amardeep S. Kang ◽  
Jasmaninder S. Grewal ◽  
Gurmeet S. Cheema
Keyword(s):  
Thermal Spray ◽  
Wear Behavior ◽  
Thermal Spray Coatings ◽  
Spray Coatings
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