scholarly journals Tribological Study of HVOF Sprayed Tungsten Carbide Coated Stainless Steel

2020 ◽  
Vol 5 (4) ◽  
pp. 7-36
Author(s):  
Alok Kumar ◽  
◽  
R.C. Singh ◽  
Ranganath Singari
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Tungsten Carbide ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Spray Distance ◽  
Spray Method ◽  
Hvof Spray ◽  
Wide Range ◽  
Fuel Rate

Corrosion and Wear, or a combination of both, are the main causes of degradation of metals used in the various industrial sectors. Degradation of the metals can be slowed down by adding a layer of resistant coating on the metal surface. This coating separates the base metal from a corrosive environment, reduces wear, and improves the appearance of the metal. The workpiece after coating becomes a composite that has properties far better than the substrate alone. There are various coating techniques, HVOF is one of the most important and widely used processes to protect the metals from wear, corrosion by providing hard and dense coatings. WC coating done by the high-velocity oxy-fuel (HVOF) spray method is the widely used method for providing a layer of corrosive resistance to a wide range of materials that are used in many different industries. In this study, Tungsten carbide (WC-12CO) Coating, HVOF Spray method was studied in great detail. Tungsten Carbide coating was done on a SUS400 Stainless steel substrate using HVOF Spray Process. An, Experiment was done to analyze the various effect of different parameters namely, oxygen rate, propane (fuel) rate, powder rate, spray distance on hardness, and surface roughness of a SUS 400 Stainless Steel substrate. Process optimization was done by using Taguchi and ANOVA methods. It was found that achieving maximum hardness was greatly dependent on propane (fuel) rate followed by powder rate, spray distance, and oxygen rate. The hardness decreases with the increasing fuel rate. And, achieving minimum surface roughness was greatly dependent on spray distance followed by oxygen rate, propane (fuel) rate, powder rate. Surface Roughness increases with increasing spray distance.

Influences of Properties of Fixed Abrasive Tool on the Lapping Process of Stainless Steel Substrate

2010 ◽  
Vol 135 ◽  
pp. 365-369
Author(s):  
Cong Rong Zhu ◽  
Bing Hai Lv ◽  
Ju Long Yuan
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Material Removal Rate ◽  
Material Removal ◽  
Stainless Steel Substrate ◽  
Removal Rate ◽  
Steel Substrate ◽  
Abrasive Tool ◽  
Bonding Material ◽  
Fixed Abrasive

To improve the machining efficiency as well as surface roughness, a series of experiments employed fixed abrasive tools are carried out for stainless steel substrate, and influences of properties of fixed abrasive tool on the lapping process are studied. It is found that the resin is the best bonding material in this study. The surface roughness under different concentration of bonding material is similar, and the material removal rate (MRR) increases as the concentration of bonding material decreases from 50% to 20%. But too little of bonding material results into low bond strength that causing low material removal rate. It is also found that higher shear strength, lower wear rate, and the shear strength of the tool with 35% bonding material is the highest. It is obvious that the surface roughness and material removal rate decline as the grit size decreases. The roughness of surface lapped with resin bonded 4000# SiC abrasive tool comes to 18nm, and the material removal rate is 0.63μm/min.

Application of Taguchi Method for Optimization of Finishing Conditions in SUS440 Stainless Steel Substrate

2007 ◽  
Vol 24-25 ◽  
pp. 77-82 ◽  
Author(s):  
Cong Rong Zhu ◽  
Ju Long Yuan ◽  
Bing Hai Lv ◽  
Zhao Zhong Zhou
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Taguchi Method ◽  
Process Parameters ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Processing Conditions ◽  
Polishing Process ◽  
Abrasive Material ◽  
Optimum Processing

This paper focuses on the application of Taguchi method for optimization of SUS440 stainless steel polishing process parameters to obtain the best finish. An optimization experiment for polishing stainless steel with SiO2 was designed by Taguchi method. Surface roughness Ra is considered as criteria for optimization. Influence of parameters involving load, speed, and slurry concentration for a given workmaterial with given abrasive (material and size) are discussed, and the optimum polishing conditions are figured out. Compared with single parameter experimental results, it illustrates that the experiment design based on Taguchi method can successfully applied to determine the optimum processing conditions for SUS440 stainless steel polishing process.

Large Area Cu(In,Ga)Se2 Films and Devices on Flexible Substrates Made by Sputtering

2005 ◽  
Vol 865 ◽  
Author(s):  
Dennis R. Hollars ◽  
Randy Dorn ◽  
P. D. Paulson ◽  
Jochen Titus ◽  
Robert Zubeck Miasolé
Keyword(s):  
Stainless Steel ◽  
Film Thickness ◽  
Small Area ◽  
Screen Printing ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Flexible Substrates ◽  
Large Area ◽  
Wide Range ◽  
Thick Deposit

AbstractA reactive sputtering process was developed for the production of Cu(In,Ga)Se2 films on a moving stainless steel substrate, in simulation of the operation of a roll coater. Cu, In and Ga fluxes were provided through magnetron sputtering and were reacted in a flux of Se on the heated substrate. CdS films were deposited either by chemical bath deposition (CBD) or by sputtering. Devices of the type steel/Cr/Mo/CIGS/CdS/ZnO/Ag were completed by sputtering ZnO layers and by screen printing grid lines. We made devices with efficiency values above 9%. A uniformity study was performed on a CIGS film and on small area devices made from it. The target length was 12”. Targets of this size are expected to produce a uniformly thick deposit over a range of 6-8”. The film thickness was 2.54 μm over a range of 6” with a standard deviation ó of 0.04 μm. The film composition was uniform over a range of 16”. The values of Cu/III and Ga/III were 0.84 and 0.31, with ó values of 0.02 and 0.01, respectively. The efficiency of allsputtered devices was uniform over a range of 12”, well beyond the 6” wide range of constant CIGS film thickness. Their efficiency was 6.6% on average with ó=0.6%.

Vibration based Energy Harvester Employing ZnO Film on the Stainless Steel Substrate

2013 ◽  
Vol 133 (4) ◽  
pp. 126-127 ◽  
Author(s):  
Shota Hosokawa ◽  
Motoaki Hara ◽  
Hiroyuki Oguchi ◽  
Hiroki Kuwano
Keyword(s):  
Stainless Steel ◽  
Energy Harvester ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Zno Film

Wear behavior of laser cladded WC-FeAl coating on 321 stainless steel substrate

2020 ◽  
Vol 32 (4) ◽  
pp. 042015
Author(s):  
Alireza Mostajeran ◽  
Reza Shoja-Razavi ◽  
Morteza Hadi ◽  
Mohammad Erfanmanesh ◽  
Hadi Karimi
Keyword(s):  
Stainless Steel ◽  
Stainless Steel Substrate ◽  
Wear Behavior ◽  
Steel Substrate

Preparation of β-PbO2 and β-PbO2-MnO2 Coating on Stainless Steel Substrate

2012 ◽  
Vol 490-495 ◽  
pp. 3486-3490
Author(s):  
Qiang Yu ◽  
Zhen Chen ◽  
Zhong Cheng Guo
Keyword(s):  
Stainless Steel ◽  
Mass Fraction ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Substrate Material ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Type ◽  
Plating Solution ◽  
Element Mass Fraction

In order to prepare a new type of anode material, stainless steel was selected as substrate material. The β-PbO2 coating on stainless steel substrate was prepared under the appropriate plating solution, and the PbO2-MnO2 coating was prepared with thermal decomposition. The crystal structure was determined by X-ray diffraction; Surface morphology was test by Scanning Electron Microscopy; the energy spectrum was used to determine element mass-fraction and the ratio of atomic number of the coatings.

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