The present study investigated the preparation and characterisation of alternative black anodic films on aluminium alloy 1050 using three different inorganic colouring processes. The colouring process was performed via the standard chemical reaction and two alternative mechanisms, i.e. electrochemical reaction or a combination of electrochemical and chemical reactions. Black anodic films with high thermo-optical properties (αs ≥ 0.90 and εn ≥ 0.90) were successfully obtained using all three processes. Differences in chemical content and location of the Co-based pigments in the coatings were highlighted and explained according to the colouring reaction mechanisms.
RamaseshanK, ViswanathanM, ThutupalliGKM.Optical black coatings for space applications. Bull Mater Sci. 1986;8(5):581–586. doi: 10.1007/BF02744358
2.
HoltzclawKW, FraserME, GlebA, Infrared emission from reactions of high-velocity atomic oxygen with black surfaces: Z306 paint, anodized aluminum, and Teflon. Appl Opt. 1994;33(22):5062–5067. doi: 10.1364/AO.33.005062
3.
Rani RU, SharmaAK, MayannaSM, Black permanganate conversion coatings on aluminium alloys for thermal control of spacecraft. Surf Eng. 2005;21(3):198–203. doi: 10.1179/174329405X50019
4.
SaxenaV, Uma RaniR, SharmaAK.Studies on ultra high solar absorber black electroless nickel coatings on aluminum alloys for space application. Surf Coat Technol. 2006;201:855–862. doi: 10.1016/j.surfcoat.2005.12.050
5.
SelvamM.Colouring of anodized aluminium by electroless method. Surf Eng. 2011;27(9):711–718. doi: 10.1179/1743294411Y.0000000022
6.
JeevaPA, NarayananS, KarthikeyanS.A review on black coatings for solar energy storaging systems. Inter J ChemTech Res. 2016;9(3):589–596.
7.
SharmaAK, Uma RaniR, MalekA, Black anodizing of a magnesium-lithium alloy. Met Finish. 1996;94:16–27. doi: 10.1016/0026-0576(96)81263-3
8.
WangL, ZhouJ, LiangJ, Thermal control coatings on magnesium alloys prepared by plasma electrolytic oxidation. Appl Surf Sci. 2013;280:151–155. doi: 10.1016/j.apsusc.2013.04.115
9.
YaoZ, XiaQ, ShenQ, A facile preparation of ceramic coatings on Ti alloys for thermal protection systems. Sol Energ Mater Sol C. 2015;143:236–241. doi: 10.1016/j.solmat.2015.07.009
10.
ArunnellaiappanT, Rama KrishnaL, AnoopS, Fabrication of multifunctional black PEO coatings on AA7075 for spacecraft applications. Surf Coat Technol. 2016;307:735–746. doi: 10.1016/j.surfcoat.2016.09.043
11.
WuX, QinW, CuiB, The influence of the oxidation time on the optical properties of the ceramic thermal control coating prepared by micro-plasma oxidation. J Mater Sci. 2007;42:7251–7255. doi: 10.1007/s10853-007-1507-z
12.
SomasundaramS, PillaiAM, SharmaAK.High emittance black nickel coating on copper substrate. J Alloy Compd. 2015;643:263–269. doi: 10.1016/j.jallcom.2015.04.149
13.
Maria ShaliniV, ArockiasamyP, Uma RaniR, Flat absorber phosphorous black nickel coatings for space applications. J Mater Sci Technol. 2012;28(2):118–124. doi: 10.1016/S1005-0302(12)60031-0
14.
SharmaAK, Uma RaniR, MayannaSM.Thermal studies on electrodeposited black oxide coating on magnesium alloys. Thermochim Acta. 2001;376:67–75. doi: 10.1016/S0040-6031(01)00534-2
15.
ParidaB, Uma RaniR, SharmaAK.Studies on chrome free galvanic conversion coating on magnesium alloy AZ31B for space applications. Surf Eng. 2010;26(5):361–366. doi: 10.1179/174329409X446340
16.
Uma RaniR, SharmaAK, MinuC.Studies on black electrolesss nickel coatings on titanium alloys for spacecraft thermal control applications. J Appl Electrochem. 2010;40:333–339. doi: 10.1007/s10800-009-9980-5
17.
Uma RaniR, Subba RaoY, SharmaAK.Studies on black anodic coatings for spacecraft thermal control applications. Galvanotechnik. 2011;109:2182–2189.
18.
SharmaAK, BhojrajH, KailaVK, Anodizing and inorganic black coloring of aluminium alloys for space applications. Met Finish. 1997;95:14–20. doi: 10.1016/S0026-0576(97)82621-9
19.
GoueffonY, AruraultL, MabruC, Black anodic coatings for space applications: study of the process parameters, characteristics and mechanical properties. J Mat Process Technol. 2009;209:5145–5151. doi: 10.1016/j.jmatprotec.2009.02.013
20.
GoueffonY, MabruC, LabarrèreM, Mechanical behavior of black anodic films on 7175 aluminium alloy for space application. Surf Coat Technol. 2009;204:1013–1017. doi: 10.1016/j.surfcoat.2009.06.026
21.
GoueffonY, AruraultL, FontorbesS, Chemical characteristics, mechanical and thermo-optical properties of black anodic films prepared on 7175 aluminium alloy for space application. Mat Chem Phys. 2010;120:636–642. doi: 10.1016/j.matchemphys.2009.12.016
22.
GoueffonY, MabruC, LabarrèreM, Investigations into the coefficient of thermal expansion of porous films prepared on AA7175 T7351 by anodizing in sulphuric acid electrolyte. Surf Coat Technol. 2010;205:2643–2648. doi: 10.1016/j.surfcoat.2010.10.026
23.
GoueffonY, AldebertG, MabruC, Flaking of black anodic films in space environment: ageing and numerical simulation. Mech Mater. 2012;45:72–82. doi: 10.1016/j.mechmat.2011.11.001
24.
KellerF, HunterMS, RobinsonDL.Structural features of oxide coatings on aluminium. J Electrochem Soc. 1953;100:411–419. doi: 10.1149/1.2781142
25.
LideDR, HaynesM.Handbook chemistry and physics 90th. Boca Raton
: CRC Press; 2010; p. 8–127.
26.
AruraultL, SalmiJ, BesRS.Comparison of AC voltage and periodic-reverse current nickel pigmented anodized aluminium as solar selective absorber. Sol Energ Mater Sol C. 2004;82:447–455. doi: 10.1016/j.solmat.2004.02.002
27.
ZemanováM, ChovancováM, GálikováZ, Nickel electrolytic colouring of anodic alumina for selective solar absorbing films. Renew Energ. 2008;33:2303–2310. doi: 10.1016/j.renene.2008.01.005
28.
BarreraE, GonzalesI, ViverosT.A new cobalt oxide electrodeposit bath for solar absorbers. Sol Energ Mater Sol C. 1998;51:69–82. doi: 10.1016/S0927-0248(97)00209-2
29.
AruraultL, BesRS.Kinetics of metallic electrochemical impregnation of porous anodic oxidation layer on 1050 and 2024 aluminium alloys. Adv Engin Mat. 2003;5:433–435. doi: 10.1002/adem.200300252
30.
BarreraCE, LaraH, ViverosGT, Degradation study of black cobalt coating. Surf Eng. 2000;16(1):50–53. doi: 10.1179/026708400322911528
