铝合金化学镀nipnib双层复合镀层及其性能研究

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1、嚣意科摅犬学硕士硪突生攀憾论文第l炎摘要基予甏达泼导管内表蘅电镀镁层工作时檄躺被矣氧(03)飘化腐蚀，而影响到使粥可靠蚀。为了解决嚣达波导管内袭黼既具有优蘸导电性能又耐爽氧薅疆熬技术要袋，经分辑鞭窥投定了疆键食佥瓷基髂麓辩，袋稻纯攀镀鼗备懿方法，建镀覆奁簿摊i～P含垒，褥镀覆Ni～转合金，褥翳导惫後较爵、辩炱氧瘸蚀能力强的双层复会镀层的铷蚤方案。对于雅镀铝合金基材，研究了在基体金属舄镀层之间制取聪和基体镪含金结合力好，同对又与镀艨结合力好韵锌中间搽。硪究了镀滚中镰离孑浓震、逐券裁浓度、络会搦、稳定裁、溢度、P娃壤等镀滚缀藏及王芝参数对镶速帮镁漂囊蓬黪露酶。终巢表秘；镀滚主要残分

2、和工慧条件豹变蠢：都辩镀速和镀屡质羹肖不网程度弱影响。经过形貌、孔阪率、缡含力、藤{虫性、抗嶷氧鹰蚀性、电臌攀等性熊测试及分拼，缩柒表明：该工慧得到的Ni．B合龛镀屡表面光亮，晶粒均匀，孔辣率为O，镀罴结合美好，耐羧、碱瘸蚀，试体经72h寞氧腐蚀试验表面仍竞赛，辩嶷襞褒镳犍藐蕤鲑，镀蘧含l，02％B魁隧率为0国49Q·m擞2细，警毫整犍馁次子A耋、e硅、A珏、Al。磐莱蘑予替代嚣遮渡导譬蠹袭璐魄镀银罄，导电性熊肖所降低，丽耐嶷甄褒蚀蛙戆赡恩增强。关键谰：波导管奥裁忧学镀N卜P台盘Ni—B合金磷奄科技大学硕士谤究生学位论文第1l页AbstfaclInter珏鑫lsufface0f

3、radarwave一鬈疆idepipe{sex￡leI建elye鑫silyOxidizedbytheOzOne，10sestheproperelectricconductiVity．RadarwaVe-guidepipemusthavethetechnicalrequestt量latbothhavefineelectficcO珏dllcliVityandbeafozoneoxidatiOncorrOdes．ThentheInethod0felectrolessplatingwasdeterminedafter￡heanalysisfesearch．ThealuminumallO

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5、te矗鬟llhatw鑫sdiff主c珏l￡￡Oplate，middlezinclevelwasstudiedwhichwas900dbindingfofcewnhaluminumalloysubstfa￡e珏疆lefi毪l鑫swoll8scO鑫li珏gsilnulla矗eOusly．PlatingfluidcOnlpositionandthecraftparameter，suchastheplatingfluidtemperatufe，t量lePHval珏es，lhenickelionco蛰centfation，thefed毯ei珏gde靠sily，thecOnlplexing

6、agem，thestabilizerandsOOn，innuencingonplatingspeedandthecoatingqualityw’erestudied．Thefesultindicate畦thattheVa娃etyofthe《nainplatingnuidcompos{tionandthecraftconditioninnuencedonplatingspeedandthecoatingqualityOnthed翻誓brentdegree．Theresearcha致alyzedt董lecoati珏gmicrostfuclureappearance．Bytestan

7、dexperimentOftheprOcessappearance，holerate，bindingforce，anticorrosiVeness，a珏ti·ozo建ecOffos{ven。ss，elec￡ronicfesist{V{ty，￡her。s珏llindicatedthat氇eNi—Balloycoatingsurfaceislum黼ous，thecrystalgrainiseVen’bolcrateiszero，theb{Bdi矬g

8、ofeeis900莲，￡矗e￡es￡sa珏lp