东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2015年
4期
87-90,95
,共5页
桦木单板%化学镀%温度%Ni-Cu-P合金%电磁屏蔽
樺木單闆%化學鍍%溫度%Ni-Cu-P閤金%電磁屏蔽
화목단판%화학도%온도%Ni-Cu-P합금%전자병폐
Birch veneer%Electroless plating%Temperature%Ni-Cu-P alloy%Electromagnetic shielding
利用化学镀方法在桦木单板表面沉积Ni—Cu—P三元合金，考查施镀温度对镀后单板表面电阻率和电磁屏蔽效能的影响，采用扫描电镜（ SEM）观察镀后单板的表面形貌，利用EDS和 XPS分析镀层成分，利用X射线衍射（ XRD）分析镀层的组织结构，采用直拉法测定镀层与木材表面的结合强度。结果表明：当温度从80℃升高到90℃时，镀层平均表面电阻率从0．451Ω／cm2降低至0．301Ω／cm2；继续升高温度，表面电阻率小幅升高；在90℃时，施镀单板的电磁屏蔽效能在9 kHz～1．5 GHz频段达到55～60dB 。 SEM观察发现镀层连续、致密且具有金属光泽；EDS分析可知镀层中存在Ni、Cu和P元素，XPS分析可知镀层组成为Ni、Cu、P，其质量分数分别为79．84％、11．82％和8．34％；XRD分析表明镀层为微晶态结构；镀层与木材表面结合牢固。
利用化學鍍方法在樺木單闆錶麵沉積Ni—Cu—P三元閤金，攷查施鍍溫度對鍍後單闆錶麵電阻率和電磁屏蔽效能的影響，採用掃描電鏡（ SEM）觀察鍍後單闆的錶麵形貌，利用EDS和 XPS分析鍍層成分，利用X射線衍射（ XRD）分析鍍層的組織結構，採用直拉法測定鍍層與木材錶麵的結閤彊度。結果錶明：噹溫度從80℃升高到90℃時，鍍層平均錶麵電阻率從0．451Ω／cm2降低至0．301Ω／cm2；繼續升高溫度，錶麵電阻率小幅升高；在90℃時，施鍍單闆的電磁屏蔽效能在9 kHz～1．5 GHz頻段達到55～60dB 。 SEM觀察髮現鍍層連續、緻密且具有金屬光澤；EDS分析可知鍍層中存在Ni、Cu和P元素，XPS分析可知鍍層組成為Ni、Cu、P，其質量分數分彆為79．84％、11．82％和8．34％；XRD分析錶明鍍層為微晶態結構；鍍層與木材錶麵結閤牢固。
이용화학도방법재화목단판표면침적Ni—Cu—P삼원합금，고사시도온도대도후단판표면전조솔화전자병폐효능적영향，채용소묘전경（ SEM）관찰도후단판적표면형모，이용EDS화 XPS분석도층성분，이용X사선연사（ XRD）분석도층적조직결구，채용직랍법측정도층여목재표면적결합강도。결과표명：당온도종80℃승고도90℃시，도층평균표면전조솔종0．451Ω／cm2강저지0．301Ω／cm2；계속승고온도，표면전조솔소폭승고；재90℃시，시도단판적전자병폐효능재9 kHz～1．5 GHz빈단체도55～60dB 。 SEM관찰발현도층련속、치밀차구유금속광택；EDS분석가지도층중존재Ni、Cu화P원소，XPS분석가지도층조성위Ni、Cu、P，기질량분수분별위79．84％、11．82％화8．34％；XRD분석표명도층위미정태결구；도층여목재표면결합뢰고。
We used electroless plating to deposite Ni-Cu-P ternary alloy on birch veneer to study the effects of plating tempera-ture on surface resistivity and electromagnetic shielding effectiveness.We observed the surface morphology of plated veneer by scanning electron microscopy ( SEM), and analyzed the composition of the coating by energy dispersion spectrometer ( EDS) ,X -ray photoelectron spectroscopy ( XPS) and the structure of the coating by X-ray diffraction ( XRD) .We meas-ured the bonding strength between the coating and wood surface by vertical pulling method.The mean surface resistivity de-creased from 0.451Ω/cm2 to 0.301Ω/cm2 with increasing temperature from 80℃to 90℃.However, the surface resistivity increased slightly with further increasing temperature.The electromagnetic shielding effectiveness of plated veneer was up to 55-60 dB in frequencies range of 9-1.5 GHz at 90℃.By SEM, the coating was smooth, continuous and compact, and had metallic sheen.By EDS, the coating was composed of nickel, copper and phosphorus element.By XPS, the coating was composed of 79.84%Ni, 11.82%Cu and 8.34%P, respectively.The coating was microcrystalline state by XRD, and the coating firmly adhered to the wood surface.
