%b3能选择性吸收器的热稳定性及耐蚀性

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1、【电镀】Thermalstabilityandcorrosionresistanceofelectroplatedblackchromiumsolarselectiveabsorber1,2,22M.R.Bayati*,K.Janghorban,M.H.Shariat(1.DepartmentofMetallurgicalandMaterialsEngineering,IranUniversityofScienceandTechnology,Tehran,Iran;2.DepartmentofMaterialsScienceandEn

2、gineering,SchoolofEngineering,ShirazUniversity,Shiraz,Iran)Abstract:Blackchromiumisoneofthemostattractivesolar黑铬镀层作为对比。根据ISO/CD12592.2标准，评价了热处理selectiveabsorberspassedlaboratoryexperimentsandhas循环前后镀层的太阳能吸收/发射性能和热稳定性。分别采用扫practicallybeenusedinsolarthermalcollectors.Thea

3、imof描电镜和X射线衍射，表征了镀层的微观结构和化学组成。采thisresearchistoevaluatethethermalstabilityandcorrosion用分光光度法测量了镀层的吸收率和发射率。结果表明，镀液resistanceofblackchromiumsolarselectiveabsorbers.Black中的配位剂对镀层的热稳定性有显著影响。与六价铬镀层相比，chromiumlayerswereelectroplatedoncoppersubstrates三价铬镀层具有更优异的热稳定性和耐蚀性。fromab

4、athcontainingtrivalentandhexavalentchromium关键词：黑铬；电镀；太阳能吸收器；选择性；耐久性ions,respectively.Solarabsorptionandemissionweremeasuredbyspectrophotometrybeforeandafterheat1IntroductiontreatmentcyclesandthethermalstabilityofthedepositedlayerswasevaluatedaccordingtoISO/CD12592.2stan

5、dard.Inphotothermalsolarenergyconversion,themostScanningelectronmicroscopy(SEM)andX-raydiffractionimportantandcriticalpartofthesolarcollectoristhe(XRD)techniqueswereemployedtocharacterizeabsorbersurfacewhichshouldabsorbmaximumsolarmicrostructureandchemicalcompositionoft

6、helayers,[1]radiationandconvertitintoheat.Thecostandeffectiverespectively.Itwasfoundthatcomplexingagentintheutilizationofsolarenergyrequiresanefficientabsorber.electroplatingbathhasasignificanteffectonthermalstabilityofthedepositedabsorberlayers.Itwasalsorevealedthatthe

7、Anefficientsolarsurfaceisdefinedashavingahightrivalentchromiumcoatinghassuperiorthermalstabilityandabsorptioncoefficientoverthewavelengthrangeofsolarcorrosionresistancetothehexavalentchromiumcoating.radiations(0.3~2.0μm)andlowemissioncoefficientforKeywords:blackchromium

8、;electroplating;solarabsorber;longwavelengthradiations.Thispropertyisnamedasselectivity;durability[2]selectivi