电镀与涂饰
電鍍與塗飾
전도여도식
ELECTROPLATING & FINISHING
2011年
6期
18-21
,共4页
化学镀%镍磷合金%碳化硼%复合镀层%耐蚀性%显微硬度%耐磨性
化學鍍%鎳燐閤金%碳化硼%複閤鍍層%耐蝕性%顯微硬度%耐磨性
화학도%얼린합금%탄화붕%복합도층%내식성%현미경도%내마성
electroless plating%nickel-phosphorus alloy%boron carbide%composite coating%corrosion resistance%microhardness%wear resistance
在由碳酸镍15 g/L、次磷酸32 mL/L、次磷酸钠15 g/L、乳酸32mL/L、乙酸189/L、丙酸3mL/L、二甲胺1.7g/L及碳化硼(即B4C)0～25 g/L组成的稳定镀液中,采用化学镀的方法在低碳钢上制备了Ni-P-B4C复合镀层.其显微硬度采用韦氏硬度法测量,耐磨性用Taber磨耗试验机测量,微观形貌和组织采用扫描电镜和X射线衍射进行分析,耐蚀性以动电位极化及电化学阻抗谱测定.碳化硼的掺入提高了镍-磷合金基体的显微硬度、耐磨性和耐蚀性.Ni-P-B4C复合镀层颗粒粗大,具有爆米花式组织结构.
在由碳痠鎳15 g/L、次燐痠32 mL/L、次燐痠鈉15 g/L、乳痠32mL/L、乙痠189/L、丙痠3mL/L、二甲胺1.7g/L及碳化硼(即B4C)0～25 g/L組成的穩定鍍液中,採用化學鍍的方法在低碳鋼上製備瞭Ni-P-B4C複閤鍍層.其顯微硬度採用韋氏硬度法測量,耐磨性用Taber磨耗試驗機測量,微觀形貌和組織採用掃描電鏡和X射線衍射進行分析,耐蝕性以動電位極化及電化學阻抗譜測定.碳化硼的摻入提高瞭鎳-燐閤金基體的顯微硬度、耐磨性和耐蝕性.Ni-P-B4C複閤鍍層顆粒粗大,具有爆米花式組織結構.
재유탄산얼15 g/L、차린산32 mL/L、차린산납15 g/L、유산32mL/L、을산189/L、병산3mL/L、이갑알1.7g/L급탄화붕(즉B4C)0～25 g/L조성적은정도액중,채용화학도적방법재저탄강상제비료Ni-P-B4C복합도층.기현미경도채용위씨경도법측량,내마성용Taber마모시험궤측량,미관형모화조직채용소묘전경화X사선연사진행분석,내식성이동전위겁화급전화학조항보측정.탄화붕적참입제고료얼-린합금기체적현미경도、내마성화내식성.Ni-P-B4C복합도층과립조대,구유폭미화식조직결구.
Ni-P-B4C composite coatings were prepared on mild steel by electroless plating from a stable bath containing nickel carbonate 1 5 g/L,hypophosphorous acid 32 mL/L,sodium hypophosphite 15 g/L,lactic acid 32 mL/L, acetic acid 18 g/L,propionic acid 3 mL/L,dimethylamine 1.7 g/L,and boron carbide(B4C)particles 0-25 g/L.The microhardness of the composite coatings was examined by Vickers tester,the wear resistance by Taber abrasion tester, the microscopic morphology and structure by SEM and X-ray diffraction,and the corrosion resistance by potentiodynamic polarization and electrochemical impedance spectroscopy.The incorporation of B4C increases the microhardness,wear resistance,and corrosion resistance of the Ni-P alloy matrix.The Ni-P-B4C composite coating features a popcorn-like structure with coarse-grained composite particles.
