On Coating Techniques for Surface Protection: A Review

Abstract

A wide variety of coating methods and materials are available for different coating applications with a common purpose of protecting a part or structure exposed to mechanical or chemical damage. A benefit of this protective function is to decrease manufacturing cost since fabrication of new parts is not needed. Available coating materials include hard and stiff metallic alloys, ceramics, bio-glasses, polymers, and engineered plastic materials, giving designers a variety freedom of choices for durable protection. To date, numerous processes such as physical/chemical vapor deposition, micro-arc oxidation, sol–gel, thermal spraying, and electrodeposition processes have been introduced and investigated. Although each of these processes provides advantages, there are always drawbacks limiting their application. However, there are many solutions to overcome deficiencies of coating techniques by using the benefits of each process in a multi-method coating. In this article, these coating methods are categorized, and compared. By developing more advanced coating techniques and materials it is possible to enhance the qualities of protection in the future.

Advanced Antiscaling Interfacial Materials toward Highly Efficient Heat Energy Transfer

“…To obtain anticipated performance of scale inhibition, various coatings have been well fabricated on heat exchanger plates by selecting suitable surface engineering techniques such as sputter technology for DLC, ion implantation for SiF 3 + , autocatalytic technology for Ni–P–PTFE, SAM for organosilanes, and LPD for TiO 2 (as shown in Figure ). Significantly, most of these techniques have been employed to manage antiscaling property, thereby leading to an increase in the heat transfer coefficient and excellent heat transfer performance in scaling environments…”

Parametric effect on electrical discharge treatment of magnesium alloy with powder composite electrode

“…In present year, modified surface using deposition or coating widely applied in the diverse fields of application. Various surface modification methods such as physical vapour deposition (PVD), chemical vapour deposition (CVD), plasma spraying and high velocity oxy fuel (HVOF) are adopted to enhance the surface properties [2]. These techniques widely applied in the several industries due to its accuracy.…”

Enhancement of metallic machine parts mechanical properties by the use of vibratory processing for oxide coated films formation and MoS2 solid lubricant coating deposit

“…Since corrosion and wear both occur at the surface of the substrate, they can be reduced or eliminated by surface treatment (Dehghan Ghadikolaei & Vahdati 2015;Shetty, Emigh & Krogstada 2019). In this respect, the metallic surface coating gives a practical solution (Wang, Tzeng, Chen, & Chang, 2012) since machine parts and structures are designed for specific applications (Babichev, Essola, et al, 2011;Fotovvati, Namdari, & Dehghanghadikolaei, 2019).…”

“…A wide variety of coating methods and materials are available for different coating applications with a common purpose of protecting parts or exposed structure from mechanical or chemical damages. Their choice mainly depends on the parts or structure mechanical properties, desired functionality, thermal properties, electrical conductibility, dynamic load bearing, and corrosion resistance and also on environmental parameters of the process including it cost (Fotovvati et al, 2019). Requirement of parts functional compatibility and safety should be met between the coated layer and the nearest environment to choose a concrete method for mechanical purpose (Babichev & Babichev, 2008).…”