电感耦合等离子体原子发射光谱法测定TG6钛合金中镁钒铬铁钴铜锰钼钨  

Determination of magnesium,vanadium,chromium,iron,cobalt,copper,manganese,molybdenum and tungsten in TG6 titanium alloy by inductively coupled plasma atomic emission spectrometry

作　　者：高颂[1,2] 庞晓辉[1] 梁红玲[1] 

机构地区：[1]中航工业北京航空材料研究院,北京100095 [2]航空材料检测与评价北京市重点实验室,北京100095

出　　处：《冶金分析》2015年第3期51-55,共5页Metallurgical Analysis

摘　　要：选择水-盐酸-氢氟酸-硝酸混合酸体系溶解样品,控制雾化气流速为0.65L/min,建立了电感耦合等离子体原子发射光谱法（ICP-AES）测定TG6钛合金中镁、钒、铬、铁、钴、铜、锰、钼和钨的方法。考察了钛基体和共存元素对待测元素的影响,确定各待测元素分析线为Mg285.2nm、V 310.2nm、Cr 283.5nm、Fe 259.9nm、Co 238.8nm、Cu 213.5nm、Mn 257.6nm、Mo 202.0nm、W 207.9nm。采用基体匹配法消除了基体影响。方法检出限为0.000 3~0.005 7μg/mL。采用方法对实际样品分析,结果的相对标准偏差为0.26%~13.6%,加标回收率为93%~110%。按照TG6钛合金的名义成分Ti-5.8Al-4Sn-4Zr-0.5Ta-0.7Nb-0.4Si-0.06C配制模拟TG6钛合金样品,实验方法测得结果与理论值基本一致。With water-hydrochloric acid-hydrofluoric acid-nitric acid mixed acid system dissolving sample, a method for determination of magnesium, vanadium, chromium, iron, cobalt, copper, manganese, molybdenum and tung- sten in TG6 titanium alloy was established by inductively coupled plasma atomic emission spectrometry（ICP-AES） at the atomization flow rate of 0.65 L/min. The effect of titanium matrix and coexisting elements was investiga- ted, and the analytical lines of each testing elements were Mg 285.2 nm, V 310.2 nm, Cr 283.5 nm, Fe 259.9 nm, Co 238.8 nm, Cu 213.5 nm, Mn 257.6 nm, Mo 202. 031 nm, W 207.9 nm. Matrix effect was eliminated by matrix matching. The detection limit was 0. 003-0. 005 7 μg/mL. The relative standard deviations （RSDs） for determination of actual samples by the proposed method were 0. 26%-13.6%, and the standard addition recoveries were 93%-110%. Simulated TG6 titanium alloy sample was prepared according to the nominal composition Ti-5. 8A1-4Sn-4Zr-0.5Ta-0.7Nb-0.4Si-0.06C of TG6 titanium alloy, whose determination results by the experimental method were basically consistent with the theoretical value.

关 键 词：TG6钛合金 杂质元素 电感耦合等离子体原子发射光谱法(ICP-AES) 

分 类 号：TG146.23[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]