scholarly journals Parameter Study on Friction Surfacing of AISI316Ti Stainless Steel over EN8 Carbon Steel and Its Effect on Coating Dimensions and Bond Strength

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4967
Author(s):  
George S. N. Rethnam ◽  
Subramanian Manivel ◽  
Vijay K. Sharma ◽  
Chidurala Srinivas ◽  
Asif Afzal ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Bond Strength ◽  
Coating Thickness ◽  
Empirical Relationship ◽  
Traverse Speed ◽  
Added Value ◽  
Parameter Study ◽  
Optimization Approach ◽  
Corrosion Properties ◽  
Friction Surfacing

Friction surfacing is a solid-state coating process that uses plastic deformation to improve the efficiency of the core metallic pattern, resulting in fine-grained coatings with superior wear and corrosion properties. This article focuses on the development of inherently homogeneous, non-diluted coating of AISI316Ti stainless steel above EN8 and also encloses the empirical relationship for the prediction of bond strength (Bs), coating thickness (Ct), and coating width (Cw). The key individualities for bonding geometry were believed to be the process parameters such as rotational speed (rpm), traverse speed (mm/s), and axial load (kN). The effect of input parameters on the bond’s external dimensions and strength was investigated using a multi-objective optimization approach through experimentation. The bond’s strength improved as the coating thickness was reduced and the coating width was increased. The grain-refined coatings superimposing martensitic microstructure with no deposition of carbide particles added value to the metallurgical study using the scanning electron microscope.

Areal Coverage Using Friction Surfacing

1992 ◽  
Vol 8 (03) ◽  
pp. 131-136 ◽  
Author(s):  
Peter Lambrineas ◽  
Peter Jewsbury
Keyword(s):  
Stainless Steel ◽  
Bond Strength ◽  
Mild Steel ◽  
Low Pressure ◽  
Tensile Bond Strength ◽  
Friction Surfacing ◽  
Areal Coverage ◽  
Overlay Coatings ◽  
Steel Substrates

Areal coatings of 304 and 316 marine grade stainless steel were made on flat mild steel substrates using a low-pressure friction surfacing technique and various deposition configurations. The maximum through-thickness tensile bond strength obtained for such coatings was 890 MPa (1.3 × 105 psi). Gaps or cracks or both between strips of deposited material were not eliminated completely during the manufacture of these coatings. Consequently, the overlay coatings described in this paper, which were made using a range of overlapping and non-overlapping deposition configurations, are primarily suitable for applications in noncorrosive environments.

scholarly journals Early-Age Tensile Bond Characteristics of Epoxy Coatings for Underwater Applications

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 757 ◽  
Author(s):  
Kim ◽  
Hong ◽  
Han ◽  
Kim
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Epoxy Resin ◽  
Coating Thickness ◽  
Experimental Results ◽  
Early Age ◽  
Curing Time ◽  
Bond Performance ◽  
Coating Type ◽  
Bond Characteristics

In this study, coating equipment for the effective underwater repair of submerged structures was developed. The tensile bond characteristics of selected epoxy resin coatings were investigated by coating the surface of a specimen using each of the four types of equipment. Using the experimental results, the tensile bond strength and the coating thickness were analyzed according to the type of equipment, coating, and curing time. The results show that the type of coating equipment used had the greatest effect on the measured bond strength and coating thickness of the selected coatings. However, the effect of coating type and curing time on the bond strength and the thickness was observed to be insignificant. Compared with the developed equipment, the surface treatment of the coating was observed to be more effective when using the pre-existing equipment, and thus the bond performance of the coating was improved compared to using the pre-existing equipment. Based on the experimental results, improvements and needs involving the equipment for further research were discussed.

scholarly journals Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 748
Author(s):  
Katayoon Kalantari ◽  
Bahram Saleh ◽  
Thomas J. Webster
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Bacterial Colonization ◽  
Antibiotic Use ◽  
Bone Cell ◽  
Corrosion Properties ◽  
Biomedical Implant ◽  
Specific Strength ◽  
Biological Functionality ◽  
Bone Cell Proliferation

Metallic materials are widely used for fabricating medical implants due to their high specific strength, biocompatibility, good corrosion properties, and fatigue resistance. Recently, titanium (Ti) and its alloys, as well as stainless steel (SS), have attracted attention from researchers because of their biocompatibility properties within the human body; however, improvements in mechanical properties while keeping other beneficial properties unchanged are still required. Severe plastic deformation (SPD) is a unique process for fabricating an ultra-fine-grained (UFG) metal with micrometer- to nanometer-level grain structures. SPD methods can substantially refine grain size and represent a promising strategy for improving biological functionality and mechanical properties. This present review paper provides an overview of different SPD techniques developed to create nano-/ultra-fine-grain-structured Ti and stainless steel for improved biomedical implant applications. Furthermore, studies will be covered that have used SPD techniques to improve bone cell proliferation and function while decreasing bacterial colonization when cultured on such nano-grained metals (without resorting to antibiotic use).

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