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TeBr 4 Spectrophotometric Determination of Trace Te in TiAl Alloy

Chen Xueyuan (Northwest Institute for Nonferrous Metal Research, Xi′an 710016)  
TeBr 4 spectrophotometric determination of trace Te in TiAl alloy has been studied The interference experiment has been also carried out The experimental results show that Zn,Mn,Mg,Mo,As,Y,Pb,Sn,Nb,Sb,P,Co,Ni,Ca,Si,Cd,Bi,Ce,Zr,W,V(all1mg),Cu,Cr(all 0 1mg)and Fe(0 2mg) have no effects on the determination of Te(100μg) under the selected conditions The trifling effect of TiAl matrix can also be eliminated by using the contrast color of same TiAl quantity 12 experiments have been carried out for synthetic samples containing 0 100% Te and samples containing 0 020% Te, respectively The corresponding determination average are 0 104% and 0 020%, and the standard deviations are 0 0024% and 0 0020%, and the corresponding relative standard deviation coefficients are 23% and 10 0%, respectively, The method presented in this paper is accurate, concise and repeatable, which can be used for the determination of trace tellurium (0 020% to 0 200%) in titanium-aluminium alloy
【CateGory Index】: TG146.2
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