镀银羰基铁粉的制备及其性能的研究  

Preparation and Performance of Silver-coated Carbonyl Iron Powder

作　　者：曹晓国[1] 张海燕[1] 

机构地区：[1]广东工业大学材料与能源学院,广州510006

出　　处：《材料工程》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)

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.

关 键 词：羰基铁粉 AG 化学镀 电磁屏蔽材料 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ031[化学工程]