本文關(guān)鍵詞：直流電沉積法制備納米晶體鎳鍍層及其熱穩(wěn)定性研究（英文）　出處：《稀有金屬材料與工程》2016年04期 　論文類型：期刊論文

  更多相關(guān)文章： 納米晶體鎳 電沉積 顯微硬度 熱穩(wěn)定性

【摘要】：利用直流電沉積技術(shù)系統(tǒng)分析電流密度和鍍液糖精濃度對納米晶體鎳性能的影響。結(jié)果表明,電流密度在0.5~1.5 A/dm~2時(shí),可調(diào)節(jié)糖精濃度制備出顯微硬度HV分布為415~603 MPa的納米晶鍍層。小電流密度0.5 A/dm~2時(shí),隨糖精濃度增大,鍍層(200)面衍射強(qiáng)度增強(qiáng),結(jié)構(gòu)由(111),(200)雙織構(gòu)向(200)面轉(zhuǎn)變,且鍍層內(nèi)應(yīng)力降低,糖精濃度增大到1.2 g/L時(shí),內(nèi)應(yīng)力降為0。鍍層晶粒尺寸為28~98 nm時(shí),直到600℃晶粒才開始長大,結(jié)構(gòu)穩(wěn)定性較好;晶粒尺寸為10 nm時(shí),晶粒在317℃異常長大,其結(jié)構(gòu)穩(wěn)定性顯著下降。
[Abstract]:The effects of current density and concentration of saccharin on the properties of nanocrystalline nickel were systematically analyzed by direct current electrodeposition technique. The results showed that the current density was between 0.5 and 1.5 A / dm ~ 2:00. The nanocrystalline coating with microhardness HV distribution of 415 ~ 603 MPa was prepared by adjusting saccharin concentration, and the low current density was 0.5A / dm ~ 2:00 with increasing saccharin concentration. The diffraction intensity of the coating surface is enhanced, the structure changes from the double texture to the surface of the coating, and the internal stress of the coating decreases and the saccharin concentration increases to 1.2 g 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1). When the grain size of the coating is 2898 nm, the grain size will not grow until 600 鈩，

本文編號：1392699