表面技术
錶麵技術
표면기술
Surface Technology
2015年
9期
7-12,28
,共7页
李霖泰%吴蒙华%王元刚%王邦国%宁智
李霖泰%吳矇華%王元剛%王邦國%寧智
리림태%오몽화%왕원강%왕방국%저지
Ni-纳米TiN复合镀%氨基磺酸镍%氯化镍%沉积速率%镀层厚度%显微硬度%微观形貌
Ni-納米TiN複閤鍍%氨基磺痠鎳%氯化鎳%沉積速率%鍍層厚度%顯微硬度%微觀形貌
Ni-납미TiN복합도%안기광산얼%록화얼%침적속솔%도층후도%현미경도%미관형모
Ni-nano TiN composite coating%nickel sulfamate%nickel chloride%deposition rate%coating thickness%microhard-ness%microstructure
目的：针对氨基磺酸镍体系镀镍液,优化活化剂NiCl2的用量,提高Ni-纳米TiN复合镀层的性能。方法采用超声-脉冲电沉积工艺制备Ni-纳米TiN复合镀层,研究NiCl2含量对镀液的电导率及复合镀层的厚度、显微硬度、表面微观形貌等的影响。结果镀液的电导率及复合镀层的厚度、显微硬度均随NiCl2含量的增加呈现先增大、后减小的变化趋势。当NiCl2的用量为30 g/L时,镀液的导电性能最佳,电导率值为61.3 mS/cm,复合镀层的厚度及显微硬度均达到最大值,分别为84μm和760HV,并且复合镀层表面平整光滑,晶粒尺寸最小。结论 NiCl2含量对镀液及复合镀层的性能有很大影响,适量的NiCl2可以防止阳极钝化,提高镀液的导电能力及沉积速率,使复合镀层的厚度增加,显微硬度提高,晶粒细化,微观形貌获得改善,性能提高。适宜的NiCl2用量为30 g/L。
目的：針對氨基磺痠鎳體繫鍍鎳液,優化活化劑NiCl2的用量,提高Ni-納米TiN複閤鍍層的性能。方法採用超聲-脈遲電沉積工藝製備Ni-納米TiN複閤鍍層,研究NiCl2含量對鍍液的電導率及複閤鍍層的厚度、顯微硬度、錶麵微觀形貌等的影響。結果鍍液的電導率及複閤鍍層的厚度、顯微硬度均隨NiCl2含量的增加呈現先增大、後減小的變化趨勢。噹NiCl2的用量為30 g/L時,鍍液的導電性能最佳,電導率值為61.3 mS/cm,複閤鍍層的厚度及顯微硬度均達到最大值,分彆為84μm和760HV,併且複閤鍍層錶麵平整光滑,晶粒呎吋最小。結論 NiCl2含量對鍍液及複閤鍍層的性能有很大影響,適量的NiCl2可以防止暘極鈍化,提高鍍液的導電能力及沉積速率,使複閤鍍層的厚度增加,顯微硬度提高,晶粒細化,微觀形貌穫得改善,性能提高。適宜的NiCl2用量為30 g/L。
목적：침대안기광산얼체계도얼액,우화활화제NiCl2적용량,제고Ni-납미TiN복합도층적성능。방법채용초성-맥충전침적공예제비Ni-납미TiN복합도층,연구NiCl2함량대도액적전도솔급복합도층적후도、현미경도、표면미관형모등적영향。결과도액적전도솔급복합도층적후도、현미경도균수NiCl2함량적증가정현선증대、후감소적변화추세。당NiCl2적용량위30 g/L시,도액적도전성능최가,전도솔치위61.3 mS/cm,복합도층적후도급현미경도균체도최대치,분별위84μm화760HV,병차복합도층표면평정광활,정립척촌최소。결론 NiCl2함량대도액급복합도층적성능유흔대영향,괄량적NiCl2가이방지양겁둔화,제고도액적도전능력급침적속솔,사복합도층적후도증가,현미경도제고,정립세화,미관형모획득개선,성능제고。괄의적NiCl2용량위30 g/L。
Objective To optimize the nickel chloride content, and improve the performance of Ni-nano TiN composite coatings for nickel sulfamate system electrolyte. Methods The effects of different nickel chloride content on the plating solution conductivity and the thickness, microhardness, surface microstructure of Ni-nano TiN composite coating prepared by ultrasonic-electrodepositing method were studied. Results The plating solution conductivity and the thickness, microhardness of the composite coating increased firstly and decreased afterwards with the increase of nickel chloride content. When the content of nickel chloride was 30 g/L, the bath conductivity was the best and the plating solution conductivity value was 61. 3 mS/cm, the thickness of the composite coating reached the maximum value of 84 μm, the microhardness reached the maximum value of 760HV, at the same time, the composite coating surface was smooth and the grain size was minimal. Conclusion Nickel chloride content had a great influence on the per-formance of the plating solution and the composite coating. A suitable content of nickel chloride could prevent anodic passivation, increase the conductive ability of the plating solution, the deposition rate, and the thickness, microhardness of composite coating, refine the grains, and improve the microstructure and performance of Ni-nano TiN composite coating. The suitable content of nickel chloride was 30 g/L.
