Polymer coatings are widely employed to improve the surface performance of engineering components by providing corrosion resistance, wear protection, hydrophobicity, biocompatibility, and functional surface characteristics. Among various deposition methods, thermal spray technologies have emerged as highly effective methods for fabricating polymer and polymer-based composite coatings on metallic, ceramic, and polymeric substrates. This review provides a comprehensive overview of thermally sprayed polymer coatings, focusing on processing methods, coating characteristics, and key application areas, along with commonly used polymers such as polyethylene (PE), polyamide (PA), polyimide (PI), polyurethane (PU), polyether ether ketone (PEEK), polyethylene terephthalate (PET), and fluoropolymers. This review critically examines the development of polymer and polymer-based composite coatings fabricated via thermal spray techniques, including flame spraying, high-velocity oxy-fuel (HVOF), plasma spray (PS), and cold spray (CS) processes. Each process offers distinct advantages in terms of particle heating, velocity, deposition efficiency, coating density, and substrate thermal exposure. Flame spraying remains the most established method for large-scale polymer coating deposition, whereas cold spray has attracted increasing attention due to its low-temperature solid-state deposition capability that minimizes thermal degradation. High-velocity oxy-fuel (HVOF) and plasma spray (PS) processes are particularly suitable for producing dense coatings and polymer ceramic composites with improved wear resistance. Functional properties including wear resistance, corrosion protection, ice-phobic behaviour, self-lubrication, antimicrobial packaging, and biofouling/fouling resistance, and biomedical applications are systematically discussed. Future opportunities are highlighted for the development of multifunctional, high-performance, and sustainable polymer-based thermal spray coatings for advanced applications in aerospace, marine, energy, transportation, and infrastructure sectors.
NasserAMHussinAIEl-wahabHA, et al.Pure and applied chemistry nano emulsion binders for paper coating synthesis and application. J Macromol Sci, Pure Appl Chem2017; 54: 271–287. https://doi.org/10.1080/10601325.2017.1294450
4.
ShiXAnhTSuoZ, et al.Effect of nanoparticles on the anticorrosion and mechanical properties of epoxy coating. Surf Coating Technol2009; 204: 237–245. https://doi.org/10.1016/j.surfcoat.2009.06.048
5.
BishtAKVaishyaROWaliaRS, et al.Nitrides ceramic coatings for tribological applications: a journey from binary to high-entropy compositions. Ceram Int2024; 50(6): 8553–8585. https://doi.org/10.1016/j.ceramint.2023.12.245
TyagiAWaliaRSMurtazaQ, et al.A critical review of diamond like carbon coating for wear resistance applications. Int J Refract Metals Hard Mater2019; 78: 107–122. https://doi.org/10.1016/j.ijrmhm.2018.09.006
8.
AgrawalAKaurRWaliaRS. Engineering optimisation of process parameters for polymers: an overview. Int J Exp Des Process2019; 6(2): 89. https://doi.org/10.1504/IJEDPO.2019.101718
9.
PawlowskiL. The science and engineering of thermal spray coatings. John Wiley & Sons, 2008, p. 656.
LimaCRCDe SouzaNFCCamargoF. Study of wear and corrosion performance of thermal sprayed engineering polymers. Surf Coating Technol2013; 220: 140–143. https://doi.org/10.1016/j.surfcoat.2012.05.051
13.
BruehlMBobzinKHujanenA, et al.Hexaferrite/polyester composite coatings for electromagnetic-wave absorbers. J Therm Spray Technol2011; 20: 638–644. https://doi.org/10.1007/s11666-010-9607-8
14.
NiebuhrDSchollM. Synthesis and performance of plasma-sprayed polymer/steel coating system. J Therm Spray Technol2005; 14: 487–494. https://doi.org/10.1361/105996305X76496
15.
TailorSVashisthaNModiA, et al.One-step fabrication of thermal sprayed polymer coating on metals one-step fabrication of thermal sprayed polymer coating on metals. Mater Res Express2020; 7: 016425. https://doi.org/10.1088/2053-1591/ab6a4f
16.
EhrensteinGWPongratzS. Resistance and stability of polymers. Hanser, 2013.
17.
LeivoEWileniusTKinosT, et al.Properties of thermally sprayed fluoropolymer PVDF, ECTFE, PFA and FEP coatings. Prog Org Coating2004; 49: 69–73. https://doi.org/10.1016/j.porgcoat.2003.08.011
18.
LockWKesavanSBernardC, et al.Deposition mechanism analysis of cold-sprayed fluoropolymer coatings and its wettability evaluation. J Therm Spray Technol2020; 29: 1643–1659. https://doi.org/10.1007/s11666-020-01059-w
KhalkhaliZRajanKSRothsteinJP. Peening effect of glass beads in the cold spray deposition of polymeric powders. J Therm Spray Technol2020; 29(4): 657–669. https://doi.org/10.1007/s11666-020-01001-0
21.
TambeSPSinghSKPatriM, et al.Studies on anticorrosive properties of thermally sprayable EVA and EVAl coating. Prog Org Coating2010; 67(3): 239–245. https://doi.org/10.1016/j.porgcoat.2009.12.002
RaviKDeplanckeTOgawaK, et al.Understanding deposition mechanism in cold sprayed ultra high molecular weight polyethylene coatings on metals by isolated particle deposition method. Addit Manuf2018; 2: 191–200. https://doi.org/10.1016/j.addma.2018.02.022
24.
RudinA. The element of polymer science and engineering. 3rd ed. Elsevier, 2012.
25.
KhalkhaliZRothsteinJP. Characterization of the cold spray deposition of a wide variety of polymeric powders. Surf Coating Technol2020; 283: 125251. https://doi.org/10.1016/j.surfcoat.2019.125251
26.
DuarteLTPaulaEM. Production and characterization of thermally sprayed polyethylene terephthalate coatings. Surf Coating Technol2004; 182: 261–267. https://doi.org/10.1016/j.surfcoat.2003.08.062
27.
XieW. Thermal spray processing of ethylene methacrylic acid and polymer-ceramic composites. Swinburne, 2013.
MartinDTRadMRHussainAMT. Beyond traditional coatings: a review on thermal-sprayed functional and smart coatings. J Therm Spray Technol. 2019; 4: 28. https://doi.org/10.1007/s11666-019-00857-1
30.
BaktirSDemirbugaSBalkayaH, et al.Polymeric coatings improve mechanical and biological properties of resin composites: an in vitro study. J Dent2026; 166: 166. https://doi.org/10.1016/j.jdent.2026.106350
ZouXChenKYaoH, et al.Chemical reaction and bonding mechanism at the polymer − metal interface. ACS Appl Mater Interfaces2022; 14: 27383–27396. https://doi.org/10.1021/acsami.2c04971
NorrmanKGhanbari-SiahkaliALarsenNB. 6 Studies of spin-coated polymer films. In: Annual reports section “C”(Physical chemistry). RSC Publishing, 2005, pp. 174–201. https://doi.org/10.1039/b408857n
39.
CallewaertMGohyJFDupont-GillainCC, et al.Surface morphology and wetting properties of surfaces coated with an amphiphilic diblock copolymer. Surf Sci2005; 575: 125–135. https://doi.org/10.1016/j.susc.2004.11.014
40.
OliveiroAZarbinAJ. A cheap and simple procedure for building a dip coating equipment for the thin film deposit in the laboratory. Quim Nova2005; 28(1): 141–144.
41.
BellevillePBonninCPriottonJJ. Room-temperature mirror preparation using sol-gel chemistry and laminar-flow coating technique. J Sol Gel Sci Technol2000; 19: 223–226. https://doi.org/10.1023/A:1008788322168
42.
IchikiMZhangLYangZ, et al.Thin film formation on non-planar surface with use of spray coating fabrication. Microsyst Technol2004; 10: 360–363. https://doi.org/10.1007/s00542-004-0443-y
43.
MostaghimiJChandraSGhafouri-AzarR, et al.Modeling thermal spray coating processes: a powerful tool in design and optimization. Surf Coating Technol2003; 164: 1–11. https://doi.org/10.1016/S0257-8972(02)00686-2
44.
SinghRKNarayanJ. Pulsed-laser evaporation technique for deposition of thin films: physics and theoretical model. Phys Rev B1990; 41(13): 8843–8859. https://doi.org/10.1103/physrevb.41.8843
45.
KumarAGrantDAlancherryS, et al. Plasma polymerization: electronics and biomedical application. Plasma Science and Technology for Emerging Economies: An AAAPT Experience. 2017; 6: 593–657. https://doi.org/10.1007/978-981-10-4217-1
46.
MinkoSPatilSDatsyukV, et al.Synthesis of adaptive polymer brushes via “Grafting to”. Langmuir2002; 18: 289–296. https://doi.org/10.1021/la015637q
47.
DasRChandaA. Fabrication and properties of spin-coated polymer films. Nano-Size Polymers: Preparation, Properties, Applications. 2016; 8: 283–306. https://doi.org/10.1007/978-3-319-39715-3
48.
AnatolyPAlkhimovNA. Gas-dynamic spraying method for applying a coating. United States Patent. 1994; 75(19): Patent No. 5,302,414.
49.
FedorovichOBuzdygarTVGaneySJ. Apparatus for gas-dynamic coating. United States Patent. 2002; 1(12): Patent No. 6,402,050.
50.
SanpoNTanMLCheangP, et al.Antibacterial property of cold-sprayed HA-Ag/PEEK coating. J Therm Spray Technol2009; 18(1): 10–15. https://doi.org/10.1007/s11666-008-9283-0
51.
SanpoNAngSMCheangP, et al.Antibacterial property of cold sprayed Chitosan-Cu/Al coating. J Therm Spray Technol2009; 18(4): 600–608. https://doi.org/10.1007/s11666-009-9391-5
52.
AlhulaifiASBuckGAArbegastWJ. Numerical and experimental investigation of cold spray gas dynamic effects for polymer coating. J Therm Spray Technol2012; 21: 852–862. https://doi.org/10.1007/s11666-012-9743-4
53.
RaviKIchikawaYDeplanckeT, et al.Development of ultra-high molecular weight polyethylene (UHMWPE) coating by cold spray technique. J Therm Spray Technol2015; 24: 1015–1025. https://doi.org/10.1007/s11666-015-0276-5
54.
AtaNOhtakeNAkasakaH. Polyethylene -carbon nanotube composite film deposited by cold spray technique. J Therm Spray Technol2017; 26: 1541–1547. https://doi.org/10.1007/s11666-017-0617-7
55.
BushTBKhalkhaliZChampagneV, et al.Optimization of cold spray deposition of high-density polyethylene powders. J Therm Spray Technol2017; 26: 1548–1564. https://doi.org/10.1007/s11666-017-0627-5
KishoreNKaziSUddinZ, et al.Analyzing the effects of particle diameter in cold spraying of thermoplastic polymers. J Therm Spray Technol2021; 30: 1226–1238. https://doi.org/10.1007/s11666-021-01219-6
58.
JacksonLIvosevicMKnightR, et al.Sliding wear properties of hvof thermally sprayed nylon-11 and nylon-11/ceramic composites on steel. J Therm Spray Technol2007; 16: 927–932. https://doi.org/10.1007/s11666-007-9088-6
59.
SchadlerLSLaulKOSmithRW, et al.Microstructure and mechanical properties of thermally sprayed silica/nylon nanocomposites. J Therm Spray Technol1997; 6: 475–485. https://doi.org/10.1007/s11666-997-0034-4
PawlowskiL. The science and engineering of thermal spray coatings. Wiley, 2008, pp. 3–4.
62.
ZhangTGawneDTBaoY. The influence of process parameters on the degradation of thermally sprayed polymer coatings. Surf Coating Technol1997; 96: 337–344. https://doi.org/10.1016/S0257-8972(97)00269-7
63.
MateusCCostilSBolotR, et al.Ceramic/fluoropolymer composite coatings by thermal spraying-a modification of surface properties. Surf Coating Technol2005; 191: 108–118. https://doi.org/10.1016/j.surfcoat.2004.04.084
64.
DonadeiVKoivuluotoHSarlinE, et al.Icephobic behaviour and thermal stability of flame-sprayed polyethylene coating: the effect of process parameters. J Therm Spray Technol2020; 29: 241–254. https://doi.org/10.1007/s11666-019-00947-0
RobertoCLimaCAngelM, et al.Slurry Erosion and corrosion behavior of some engineering polymers applied by low-pressure flame spray. J Mater Eng Perform2016; 25: 4911–4918. https://doi.org/10.1007/s11665-016-2317-8
72.
DonadeiVKoivuluotoHSarlinE, et al.Lubricated icephobic coatings prepared by flame spraying with hybrid feedstock injection. Surf Coating Technol2020; 403: 126396. https://doi.org/10.1016/j.surfcoat.2020.126396
73.
VarisTDonadeiVKoivuluotoH, et al.The effect of mechanical and thermal stresses on the performance of lubricated icephobic coatings during cyclic icing/deicing tests. Prog Org Coating2022; 163: 106614. https://doi.org/10.1016/j.porgcoat.2021.106614
74.
ManZLinXWangH. Role of well-dispersed carbon nanotubes and limited matrix degradation on tribological properties of flame-sprayed PEEK. Nanocomposite Coatings, J. Tribol2022; 144: 1–12. https://doi.org/10.1115/1.4050733
75.
ZhangGLiaoHYuH, et al.Correlation of crystallization behavior and mechanical properties of thermal sprayed PEEK coating. Surf Coating Technol2006; 200: 6690–6695. https://doi.org/10.1016/j.surfcoat.2005.10.006
LiuYShaoXHuangJ, et al.Flame sprayed environmentally friendly High Density Polyethylene (HDPE) capsaicin composite coatings for marine antifouling applications. Mater Lett2019; 238: 46–50. https://doi.org/10.1016/j.matlet.2018.11.144
78.
VuoristoPLeivoETurunenE, et al.Evaluation of thermally sprayed and other polymeric coatings for use in natural gas pipeline components. ASM Thermal Spray Society2003; 83638: 1693–1702. https://doi.org/10.31399/asm.cp.itsc2003p1693
79.
WangXLiuYGongY, et al.Liquid flame spray fabrication of polyimide-copper coatings for antifouling applications. Mater Lett2017; 190: 217–220. https://doi.org/10.1016/j.matlet.2017.01.028
80.
LiuYXuXSuoX, et al.Suspension flame spray construction of polyimide-copper layers for marine antifouling applications. J Therm Spray Technol2018; 27(1): 98–105. https://doi.org/10.1007/s11666-017-0653-3
81.
JiaZLiuYWangY, et al.Flame spray fabrication of polyethylene-Cu composite coatings with enwrapped structures: a new route for constructing antifouling layers. Surf Coating Technol2017; 309: 872–879. https://doi.org/10.1016/j.surfcoat.2016.10.071
82.
JiaZHuangJGongY, et al.Incorporation of copper enhances the anti-ageing property of flame-sprayed high-density polyethylene coatings. J Therm Spray Technol2017; 26(3): 409–416. https://doi.org/10.1007/s11666-017-0525-x
83.
JothiKJSanthoskumarAUAmanullaS, et al.Thermally sprayable anti-corrosion marine coatings based on MAH-g-LDPE/UHMWPE nanocomposites. J Therm Spray Technol2014; 23: 1413–1424. https://doi.org/10.1007/s11666-014-0153-7
84.
KorobovYSBelotserkovskyMATimofeevKM, et al.Adhesive strength of flame sprayed polymer coatings. AIP Conference Proceedong2016; 1785: 1–5. https://doi.org/10.1063/1.4967032
LalSMurtazaQWaliaRS, et al.Modelling and simulation of FSW of polycarbonate using finite element analysis. Mater Today Proc2022; 50: 2424–2429. https://doi.org/10.1016/j.matpr.2021.10.260
87.
ZhangTBaoYGawneDT, et al.Effect of a moving flame on the temperature of polymer coatings and substrates. Prog Org Coating2011; 70(1): 45–51. https://doi.org/10.1016/j.porgcoat.2010.09.018
88.
ChuJNSchultzJM. The influence of microstructure on the failure behaviour of PEEK. J Mater Sci1990; 25: 3746–3752. https://doi.org/10.1007/BF00575414
89.
IvosevicMCairncrossRAKnightR. 3D predictions of thermally sprayed polymer splats: modeling particle acceleration, heating and deformation on impact with a flat substrate. Int J Heat Mass Tran2006; 49: 3285–3297. https://doi.org/10.1016/j.ijheatmasstransfer.2006.03.028
90.
FardanABerndtCCAhmedR. Numerical modelling of particle impact and residual stresses in cold sprayed coatings: a review. Surf Coating Technol2021; 409: 126835. https://doi.org/10.1016/j.surfcoat.2021.126835
91.
GoyalTWaliaRSSharmaP, et al.Finite element modeling and analysis of powder stream in low pressure cold spray process. J Inst Eng: Series C2016; 97(3): 331–344. https://doi.org/10.1007/s40032-016-0234-0
HellioCYebraD. Advances in marine antifouling coatings and technologies. Woodhead Publishing Ltd, 2009, p. 784.
98.
EvansSMLeksonoTMcKinnellPD. Tributyltin pollution: a diminishing problem following legislation limiting the use of TBT-Based anti-fouling paints. Mar Pollut Bull1995; 30(1): 14–21. https://doi.org/10.1016/0025-326X(94)00181-8
99.
MatyjaszewskiK. Atom Transfer Radical Polymerization (ATRP): current status and future perspectives. Macromolecules2012; 45(10): 4015–4039. https://doi.org/10.1021/ma3001719
100.
LutzJF. 1, 3-Dipolar cycloadditions of azides and alkynes: a universal ligation tool in polymer and materials science. Angew Chem Int Ed. 2007; 7: 1018–1025. https://doi.org/10.1002/anie.200604050
101.
HoyleCEBowmanCN. Bowman Thiol–ene click chemistry, Angewandte ChemieInternational edition. Angew Chem Int Ed Engl2010; 49: 1540–1573. https://doi.org/10.1002/anie.200903924
GhoshKGAnSNirmalaN, et al.Development and application of fungistatic wrappers in food preservation. II. Wrappers made by coating process. Pascal-Francis Inist Fr1977; 24: 261–264.
WengYMHotchkissJH. Anhydrides as antimycotic agents added to polyethylene films for food packaging. Packag Technol Sci1993; 6: 123–128. https://doi.org/10.1002/pts.2770060304
106.
ChungDPapadakisSEYamKL. Release of propyl paraben from a polymer coating into water and food simulating solvents for antimicrobial packaging applications. J Food Process Preserv2000; 25: 71–87. https://doi.org/10.1111/j.1745-4549.2001.tb00444.x
107.
SmithJRLamprouDA. Polymer coatings for biomedical applications: a review. The International Journal of Surface Engineering and Coatings2014; 92: 2967–3119. https://doi.org/10.1179/0020296713Z.000000000157
108.
WeiQHaagR. Universal polymer coatings and their representative biomedical applications. Mater Horiz2015; 2(6): 567–577. https://doi.org/10.1039/C5MH00089K
McGrathMGVrdoljakAO’MahonyC, et al.Determination of parameters for successful spray coating of silicon microneedle arrays. Int J Pharm2011; 415(1-2): 140–149. https://doi.org/10.1016/j.ijpharm.2011.05.064
113.
CampbellSALiYBreakspearS, et al.Conducting polymer coatings in electrochemical technology part 1-Synthesis and fundamental aspects, Transactions of the IMF, 2013. https://doi.org/10.1179/174591907X229671
114.
PritchetJW. One-component revision of failed hip resurfacing from adverse reaction to metal wear debris. J Arthroplast2014; 29(1): 219–224. https://doi.org/10.1016/j.arth.2013.04.011
ÇiftçiHTamerUTekerMŞ, et al.An enzyme free potentiometric detection of glucose based on a conducting polymer poly (3-aminophenyl boronic acid-co-3-octylthiophene). Electrochim Acta2013; 90: 358–365. https://doi.org/10.1016/j.electacta.2012.12.019
