原子吸收光谱法测定铸铝铜合金拉伸断口毫克级样品中主成分  

AAS DETERMINATION OF MAIN CONSTITUENTS IN CASTING Al-Cu ALLOY WITH 1mg SAMPLE TAKEN FROM ITS FRACTURE SURFACE

作　　者：杨强[1] 袁明康[1] 林良栋[1] 邹德霜[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,绵阳621900

出　　处：《理化检验（化学分册）》2001年第10期461-462,464,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究了铸铝铜合金拉伸断口毫克级样品中主成分铜、锰、镉的火焰原子吸收光谱法(FAAS)和钛的石墨炉原子吸收光谱法 (GFAAS)。其中铜、锰、镉、钛的相对标准偏差分别为0 5 3% ,0 .79% ,2 .5 7% ,5 .5 %。其加标回收率分别为 95 % ,95 %～ 97% ,10 1% ,90 %。通过对铸铝铜合金拉伸断口的化学分析研究 。Small amounts of sample on miligram scale are taken from the fracture surface of a casting Al Cu alloy, and its main constituents are determined by FAAS (for Cu, Mn and Cd) and GFAAS ( for Ti). The RSD′s obtained for these four elements (Cu, Mn, Cd, Ti) are 0.53%, 0.79%, 2.57% and 5.5%, and their recoveries are 95%, 95%～97%, 101% and 90% respectively. Based on the data obtained in the analysis, it is concluded that the segregation of copper in the alloy is the main cause of the pull fracture.

关 键 词：原子吸收光谱法 拉伸断口 铸铝铜合金 化学分析 铜偏析 铜 锰 镉 钛 毫克级样品 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG115.33[金属学及工艺—金属材料]