- 作者: 蔡素珍 ; 陳淑娟 ; 黃蕙
- 作者服務機構: Dept. of Applied Chemistry, Chingyi Women's College of Arts and Science, R.O.C.
- 中文摘要:
The quantitative analysis of Cr in super alloys with the presence of a wide variety of elements, Al, B, C, Co, Cu, Hf, Fe, Mn, Mo, Ni, Nb, P, Si, S, Ti, Ta, W, Zr; and trace amounts (a few ppm) of Pb ,Se, Bi, Tl and Te has been studied. Persulfate oxidation and diphenylcarbazide photometric method were studied with the purpose of developing a relatively fast and reliable measurement for Cr by wet chemical analysis. The results indicate that the latter is supperior to the former in practical view.
In the photometric method, solid sample (0.1g alloys) when treated with HClO/sub 4/ and H/sub 2/SO/sub 4/ took ca. 72 hrs. for complete dissolution. When treated with HCl followed by HNO/sub 3/, 0.1g alloys were completely dissolved within 1.5 hours. The best experimental conditions for diphenylcarbazide photometric determination of Cr was thus established. Photometric determination of Cr complexes was made at 540 nm. - 英文摘要: --
- 中文關鍵字: Super Alloys; Chemical Analysis; Chromium; Persulfate Oxidation; Diphenylcarbazide
- 英文關鍵字: 超合金;化學分析;過硫酸鹽氧化作用;二苯基卡胼;鉻