CAJ | 학술논문

采用液相还原法制备银铜包覆粉末，用葡萄糖溶液预还原法制备超细铜粉，利用水合肼作为还原剂，讨论不同的分散剂，反应体系不同温度，Ag＋不同初始浓度制备出的包覆粉末的形貌及性能。并对其进行SEM、TEM-EDS、XRD等检测。结果表明，用PVP分散剂制备的铜粉形貌好，粒径均一；反应体系温度以70℃为最佳；Ag＋初始浓度分别为0．2mol／L为最佳。
채용액상환원법제비은동포복분말，용포도당용액예환원법제비초세동분，이용수합정작위환원제，토론불동적분산제，반응체계불동온도，Ag＋불동초시농도제비출적포복분말적형모급성능。병대기진행SEM、TEM-EDS、XRD등검측。결과표명，용PVP분산제제비적동분형모호，립경균일；반응체계온도이70℃위최가；Ag＋초시농도분별위0．2mol／L위최가。
Liquid phase reduction method was applied to prepare superfine copper-silver coated powder in this paper. Glucose beforehand reduction method was used to prepare copper powder. Hydrazine hydrate was chosen as reductant. Different dispersants, different reaction system temperature and different Ag+ initial concentrate were analyzed. SEM and some other analysis method were used to characterize the sam- ples. Results show that copper particles morphology and size was fine and uniform when PVP was used as dispersant. Reaction system temperature at 70℃ and Ag+ initial concentrate at 0. 2mol/Lwas optimum.