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| Determination ofTitanium Content in Tungsten-titanium Alloys by Ammonium Ferric SulfateTitrimetry |
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Received:December 07, 2016
Revised:January 15, 2017
Published Online:September 30, 2017
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| DOI：doi:10.3969/j.issn.2095-1035.2017.03.017 |
| KeyWord:tungsten-titanium alloys; titanium; titrimetry; ammonium ferric sulfate;precipitation separation |
| Author | Institution |
| YANG Junhong |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
| LI Tuo |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
| ZHAI Tongde |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
| LI Rong |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
| WEI Dong |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
| LI Juan |
Western Metal Materials Co.,Ltd., Baoji,Shaanxi, China |
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| Abstract: |
| A new method for the determination of titanium in Tungsten-titanium alloys byammonium ferric sulfate titrimetry was established. The sample was dissolved in HNO3-HF solution. Titanium was precipitated with iron as the carrier in NaOH(100 g/L) alkaline medium, then the precipitate was dissolved in hydrochloric acid. Under acidic conditions, Ti4+ was reduced to Ti3+ by aluminum metal, and Ti3+ was titrated by ammonium ferric sulfate standard solution with thiocyanate as indicator. The method was applied to the real samples and RSD (n=11)of 0.40% was achieved with the recovery rate from 99.8% to101%. |
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