表面技术
錶麵技術
표면기술
SURFACE TECHNOLOGY
2009年
6期
73-75
,共3页
AZ31镁合金%化学镀%镍磷合金%沉积时间%耐腐蚀性%形貌
AZ31鎂閤金%化學鍍%鎳燐閤金%沉積時間%耐腐蝕性%形貌
AZ31미합금%화학도%얼린합금%침적시간%내부식성%형모
AZ31 magnesium alloy%Electroless nickel plating%Depositing time%Corrosion resistance%Morphology
沉积时间是影响化学镀镍磷合金最重要的工艺参数之一.采用不同施镀时间在AZ31镁合金表面进行化学镀镍磷合金,分析了这一主要工艺参数对镀层的硬度、沉积速率、耐腐蚀性、微结构及形貌等的影响,拟对这一主要工艺参数进行优化,为AZ31镁合金的表面处理提供依据.结果表明:在镀液pH值为6.5,温度为85℃的条件下,选择施镀持续时间为45min时镀层质量最佳,所得镀层光亮,胞状组织均匀致密,耐腐蚀性比基体明显有所提高,并具有较高的硬度.
沉積時間是影響化學鍍鎳燐閤金最重要的工藝參數之一.採用不同施鍍時間在AZ31鎂閤金錶麵進行化學鍍鎳燐閤金,分析瞭這一主要工藝參數對鍍層的硬度、沉積速率、耐腐蝕性、微結構及形貌等的影響,擬對這一主要工藝參數進行優化,為AZ31鎂閤金的錶麵處理提供依據.結果錶明:在鍍液pH值為6.5,溫度為85℃的條件下,選擇施鍍持續時間為45min時鍍層質量最佳,所得鍍層光亮,胞狀組織均勻緻密,耐腐蝕性比基體明顯有所提高,併具有較高的硬度.
침적시간시영향화학도얼린합금최중요적공예삼수지일.채용불동시도시간재AZ31미합금표면진행화학도얼린합금,분석료저일주요공예삼수대도층적경도、침적속솔、내부식성、미결구급형모등적영향,의대저일주요공예삼수진행우화,위AZ31미합금적표면처리제공의거.결과표명:재도액pH치위6.5,온도위85℃적조건하,선택시도지속시간위45min시도층질량최가,소득도층광량,포상조직균균치밀,내부식성비기체명현유소제고,병구유교고적경도.
The depositing time is one of the most important technical parameters which affect the thickness and quality of the coatings. AZ31 magnesium alloy was electro-less plated directly after being pretreated. The effects of depositing time on micro-hardness, depositing velocity, anti-corrosion property, microstructure and surface morphology of the coatings were studied to optimize the parameter and provide the theoretic basis for the surface treatment of the alloy. The results reveales that the depositing time is the important parameter which influence the coating performances greatly. The coatings with properties of bright surface,uniform and dense structure,high corrosion resistance and so on are achieved when the depositing time is 45 minutes.