CAJ | 학술논문

利用化学镀对铸态Zr-Al二元合金进行表面处理，在经过除油、酸洗、化学转化处理等预处理工序后，在化学镀液中施镀在合金表面生成Ni-P镀层。利用扫描电镜和X射线衍射仪对合金、化学转化膜以及化学镀层的组成及微观结构进行表征。结果表明：铸态Zr-Al合金由α相(α-Zr)和β相(Zr2Al)组成，其中基体为α相，β相沿晶界呈非连续分布；经锌系化学转化处理后合金表面形成以 Zn3(PO4)2?H2O 为主要成分的化学转化膜，该膜由细小的片状晶体颗粒密排堆积而成；在此基础上进行化学镀镍磷处理，在铸态Zr-Al合金表面得到Ni-P镀层，其表面颗粒均匀，无明显孔隙缺陷，结合紧密，镀层与基体结合良好。
이용화학도대주태Zr-Al이원합금진행표면처리，재경과제유、산세、화학전화처리등예처리공서후，재화학도액중시도재합금표면생성Ni-P도층。이용소묘전경화X사선연사의대합금、화학전화막이급화학도층적조성급미관결구진행표정。결과표명：주태Zr-Al합금유α상(α-Zr)화β상(Zr2Al)조성，기중기체위α상，β상연정계정비련속분포；경자계화학전화처리후합금표면형성이 Zn3(PO4)2?H2O 위주요성분적화학전화막，해막유세소적편상정체과립밀배퇴적이성；재차기출상진행화학도얼린처리，재주태Zr-Al합금표면득도Ni-P도층，기표면과립균균，무명현공극결함，결합긴밀，도층여기체결합량호。
The electroless nickel-plating on as-cast Zr-Al alloy was studied. After degreasing, pickling, chemical conversion treatment, Ni-P coating on Zr-Al alloy was plated from the electroless plating solution. The microstructure and the phase composition of Zr-Al alloy, phosphate coating and Ni-P coating were observed using scanning electron microscopy (SEM) and XRD, respectively. The results show that as-cast Zr-Al alloy is composed of α-Zr and Zr2Al, whereα-Zr is substrate and Zr2Al spreads along grain boundaries discontinuously. The Zn3(PO4)2?H2O conversion film after treated by the chemical conversion solution is formed. The film consists of small crystal particles densely. The Ni-P coating is successfully deposited on the conversion film. The electroless Ni-P coating is uniform, compact and has no obvious defects. The adhesion of the electroless Ni-P coating and substrate satisfies the requirement of ISO 2819.