【摘要】：采用電刷鍍技術,以Ni-Cr鍍液制備了Ni-Cr納米電刷鍍層并對其進行了退火處理;采用X射線衍射儀,掃描電子顯微鏡,能量色散譜儀分析了不同溫度下退火處理的Ni-Cr納米鍍層的形貌以及結(jié)構(gòu);分別利用MH-5-VM型顯微硬度計和CSM摩擦試驗機測定了刷鍍層的顯微硬度和摩擦磨損性能.研究結(jié)果表明:鍍層晶粒的大小均為納米級,隨溫度變化不大,介于10~20 nm之間,在500℃以下,Cr以固溶體形式存在于Ni的晶格中,500℃以上Cr從Ni的晶格中析出;鍍層的耐磨性隨退火溫度的變化與鍍層的硬度隨溫度的變化大致相同:Ni-Cr刷鍍層在400℃退火處理時,硬度最大,磨損率最小.
[Abstract]:The Ni-Cr nanocrystalline brush plating layer was prepared with Ni-Cr bath and annealed. The morphology and structure of Ni-Cr nanocrystalline coatings annealed at different temperatures were analyzed by X-ray diffractometer scanning electron microscope and energy dispersive spectrometer. The microhardness and friction and wear properties of the coating were measured by MH-5-VM microhardness tester and CSM friction tester respectively. The results show that the grain size of the coating is nanocrystalline, which varies little with temperature, between 10 ~ 20 nm and below 500 鈩，

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