摘要
用化学镀法,甲醛为还原剂,制备镀银羰基铁粉。用XRD,SEM和EDX对粉体进行表征。用重法测定粉体的抗氧化性能,并以镀银羰基铁粉制备电磁屏蔽材料,检测其在100kHz^1.5GHz的屏蔽效能。结果表明:用该法制备的镀银羰基铁粉能够实现表面银层包覆完整、致密;羰基铁粉镀银后的抗氧化性能得到明显提高;电磁屏蔽材料在100kHz^1.5GHz频率范围内获得优于-32dB的屏蔽效能。
Silver-coated carbonyl iron powder was prepared by using electroless plating metnoo, formaldehyde was used as reducer. The powder was characterized by XRD, SEM and EDX. Anti-oxidation was tested by TG. And SE of electromagnetic shielding material prepared with silver-coated carbonyl iron powders was investigated at the frequency range of 100kHz-1.5GHz. The results show that this method can prepare the integrative compact silver coating for silver-coated carbonyl iron powders. Oxidation resistance of carbonyl iron powders after being coated with silver was improved obviously. The SE of the electromagnetic shielding material is better than -32dB in the frequency range of 100kHz- 1.5GHz.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2007年第8期69-72,共4页
Journal of Materials Engineering
基金
国家自然科学基金(50372013)
高等学校博士学科点专项科研基金(20050562002)
广东省自然科学基金(036918)
广东省科技计划项目(2004B10301008)
广州市科技计划项目(2005Z2-D2051)
广东省教育厅自然科学研究项目(04Z005)
关键词
羰基铁粉
AG
化学镀
电磁屏蔽材料
carbonyl iron powder
Ag
electroless plating
electromagnetic shielding material
