Effect of Cold Rolling and Heat Treatment on Corrosion and Wear Behavior of β-Titanium Ti-25Nb-25Zr Alloy

2021 ◽  
Author(s):  
Prabhat K. Rai ◽  
D. Naidu ◽  
S. K. Vajpai ◽  
B. Sharma ◽  
K. Ameyama ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Cold Rolling ◽  
Wear Behavior ◽  
Corrosion And Wear

Corrosion and Wear Behavior of Electroless Nickel Coatings

2020 ◽  
pp. 210-227
Author(s):  
Suman Kalyan Das ◽  
Supriyo Roy ◽  
Prasanta Sahoo
Keyword(s):  
Heat Treatment ◽  
Wear Behavior ◽  
Current Source ◽  
High Hardness ◽  
Electroless Nickel ◽  
Treatment Temperature ◽  
Corrosion And Wear ◽  
Uniform Coating ◽  
Nickel Coatings ◽  
Electroless Coatings

This chapter describes how corrosion is the degradation of a material due to a reaction with its environment. Wear is another deteriorating phenomenon which erodes the contacting surfaces of any mechanical component gradually. Although corrosion and wear are two different phenomenon they are often interdependent and in most practical situations take place simultaneously. Fortunately, several surface modification methods exist which can protect the surface of metal against corrosion and wear. Among them, electroless nickel coatings is a technology where a coating is applied without the use of external current source. The primary advantages of electroless coatings include uniform coating and ability to coat non-conductive materials. Electroless nickel coatings possess excellent properties such as high hardness, good wear resistance and corrosion resistance. The corrosion and wear behavior of these coatings mainly depend on bath ingredients, deposition conditions, heat treatment temperature, etc.

scholarly journals Corrosion and wear study of Ni-P-PTFE-Al2O3 coating: the effect of heat treatment

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Ankita Sharma ◽  
A. Singh
Keyword(s):  
Heat Treatment ◽  
Structural Changes ◽  
Wear Behavior ◽  
Corrosion And Wear ◽  
Al2o3 Coating ◽  
Aluminum Phosphide ◽  
Corrosive Media ◽  
X Ray ◽  
Heat Treated ◽  
Enhanced Crystallinity

AbstractIn the present work, Ni-P-PTFE-Al2O3 nanodispersion coatings were developed on mild steel. These coatings were heat treated and were exposed to 3.5% NaCl solution. Thus obtained as plated, heat treated and exposed coatings were investigated for their corrosion and wear behavior together with other tribological properties. SEM/EDAX and X-ray diffractometry were used to analyze composition and structural changes of the coatings. Corrosion parameters of the coated samples were obtained from electrochemical polarization and immersion tests. Microhardness, wear resistance and friction coefficient of the coatings were also measured. The results showed that heat treatment at 200°C has little effect on the coating whereas treatment at 400°C results in enhanced crystallinity due to formation of intermetallics phases and possibly aluminum phosphide. Beyond this temperature at 600°C coarsening of the grains occurs which reduces the number of hardening sites. These structural changes result in the observance of highest hardness and lowest wear rate in case of coatings treated at 400°C. Corrosion resistance of the coated samples was observed to decrease with the heat treatment presumably due to the various physical and structural changes of the coating components. Similar changes were observed on their exposure to the corrosive media.

Vanadium Additions to a High-Cr White Iron and its Effects on the Abrasive Wear Behavior.

MRS Advances ◽  
2020 ◽  
Vol 5 (59-60) ◽  
pp. 3077-3089
Author(s):  
Alexeis Sánchez ◽  
Arnoldo Bedolla-Jacuinde ◽  
Francisco V. Guerra ◽  
I. Mejía
Keyword(s):  
Heat Treatment ◽  
Abrasive Wear ◽  
Volume Fraction ◽  
Wear Behavior ◽  
Wear Behaviour ◽  
White Iron ◽  
Heat Treated ◽  
Bulk Hardness ◽  
Abrasive Wear Behavior ◽  
Vanadium Carbides

AbstractFrom the present study, vanadium additions up to 6.4% were added to a 14%Cr-3%C white iron, and the effect on the microstructure, hardness and abrasive wear were analysed. The experimental irons were melted in an open induction furnace and cast into sand moulds to obtain bars of 18, 25, and 37 mm thickness. The alloys were characterized by optical and electronic microscopy, and X-ray diffraction. Bulk hardness was measured in the as-cast conditions and after a destabilization heat treatment at 900°C for 45 min. Abrasive wear resistance tests were undertaken for the different irons according to the ASTM G65 standard in both as-cast and heat-treated conditions under a load of 60 N for 1500 m. The results show that, vanadium additions caused a decrease in the carbon content in the alloy and that some carbon is also consumed by forming primary vanadium carbides; thus, decreasing the eutectic M7C3 carbide volume fraction (CVF) from 30% for the base iron to 20% for the iron with 6.4%V;but overall CVF content (M7C3 + VC) is constant at 30%. Wear behaviour was better for the heat-treated alloys and mainly for the 6.4%V iron. Such a behaviour is discussed in terms of the CVF, the amount of vanadium carbides, the amount of martensite/austenite in matrix and the amount of secondary carbides precipitated during the destabilization heat treatment.

Engineering mechanical properties by controlling the microstructure of an Fe–Ni–Mn martensitic steel through pre-cold rolling and subsequent heat treatment

2021 ◽  
Vol 804 ◽  
pp. 140760
Author(s):  
Hamidreza Koohdar ◽  
Pouya Hakimipour ◽  
Hamid Reza Jafarian ◽  
Terence G. Langdon ◽  
Mahmoud Nili-Ahmadabadi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cold Rolling ◽  
Martensitic Steel ◽  
Subsequent Heat Treatment

Effect of heat treatment on microstructure and wear behavior of Al–Si alloys with various iron contents

2011 ◽  
Vol 32 (3) ◽  
pp. 1520-1525 ◽  
Author(s):  
A. Eshaghi ◽  
H.M. Ghasemi ◽  
J. Rassizadehghani
Keyword(s):  
Heat Treatment ◽  
Wear Behavior

scholarly journals Investigation on Microblasting Applied to CrN Coatings

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Lorenzo Montesano ◽  
Annalisa Pola ◽  
Marcello Gelfi ◽  
Giovina Marina La Vecchia
Keyword(s):  
Wear Behavior ◽  
Corrosion And Wear ◽  
Crn Coating ◽  
Evaporation Technique ◽  
Cathodic Arc Evaporation ◽  
Quenched And Tempered Steel ◽  
Pin On Disk ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Crn Coatings

A microblasting treatment carried out on CrN coated samples was studied to investigate the induced effect on corrosion and wear resistance. CrN coating was deposited through Cathodic Arc Evaporation technique on quenched and tempered steel. The properties of the coating were studied by hardness measurements, scratch, potentiodynamic, and pin-on-disk tests. The results show that microblasting reduces the corrosion resistance while improving the wear behavior.

An Investigation on Corrosion and Wear Behavior of Automotive Materials

2021 ◽  
Author(s):  
Sadhasivam Deepan Kumar ◽  
Boopalan N ◽  
Nagarajan Praveenkumar ◽  
R Manojkumar ◽  
G E KITHIYON JOSHVA ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Corrosion And Wear

Advantages of Induction Heat Treatment in the Application of Self-Fluxing Alloy to Boiler Tubes

1998 ◽  
Author(s):  
A. Tomiguchi ◽  
Y. Sochi ◽  
Y. Matsubara
Keyword(s):  
Heat Treatment ◽  
Service Life ◽  
Induction Heating ◽  
Corrosion And Wear ◽  
Hard Coatings ◽  
Heating Process ◽  
Induction Heat ◽  
Induction Heat Treatment ◽  
Boiler Tubes ◽  
Bent Pipe

Abstract This study focuses on two major advantages of induction heating over flame heating in the treatment of coated boiler tubes. In both cases the induction heating process is simple, fast and effective. Firstly, we will show how the the use of induction heating results in exceptionally thick and hard coatings with low porosity. Having high corrosion and wear resistant properties, the products can satisfy industry's needs for reliable coatings with a long service life. Next, the study will detail how a pipe with the coating already applied can be simultaneously bent by induction heating while the coating is melted and fused to the pipe. The result is a thicker, more even and reliable coating than that accomplished by the flame sprayed method on a bent pipe. The process is not only less cumbersome, but again provides a superior product for the market.

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