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Effect of CeO2 particles on the high phosphorus electroless Ni layer

  • Zhen Zheng
  • , Rong An
  • , Wei Zhou
  • , Shuya Zhou
  • , Chunqing Wang*
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Electroless Ni (EN) technology is widely used in electronic package field and the high phosphorus composite EN technology was studied. In this paper, we discussed the influence of nano-CeO2 and micro-CeO2 particles with different amounts when they were added in high phosphorus content Ni-P composite coating. The microstructure and crystal structure of the coating were observed by scanning electron microscope (SEM) and X-ray diffraction analysis (XRD) respectively. The results showed that whether nano-CeO2 or micro-CeO2, both refined the grain, increased the specific surface area, however the micro-CeO2 particles made more obvious effect. As the XRD result showed, the peak gradually become gentle, the coating turned into amorphous which may cause by the CeO2 particles absorbed in the grain boundary and crystal defects. The results indicated the CeO2 deposited with the coating very well. Finally, the corrosion resistance of the coating was tested with the method of electrochemical impedance (EIS) and linear polarization. The results were unified. When the dosage is 5g/L, the corrosion resistance was the best. However, lower corrosion resistance was got when excessive CeO2 particles were added which may affect by the catalytic property.

Original languageEnglish
Title of host publication16th International Conference on Electronic Packaging Technology, ICEPT 2015
EditorsHu He, Keyun Bi, Wenhui Zhu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages476-479
Number of pages4
ISBN (Electronic)9781467379991
DOIs
StatePublished - 1 Sep 2015
Event16th International Conference on Electronic Packaging Technology, ICEPT 2015 - Changsha, China
Duration: 11 Aug 201514 Aug 2015

Publication series

Name16th International Conference on Electronic Packaging Technology, ICEPT 2015

Conference

Conference16th International Conference on Electronic Packaging Technology, ICEPT 2015
Country/TerritoryChina
CityChangsha
Period11/08/1514/08/15

Keywords

  • CeO particles
  • Corrosion Resistance
  • Electroless Ni
  • high Phosphorus

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