巻号一覧
7 巻, 2 号
選択された号の論文の8件中1～8を表示しています
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島津 備愛1958 年 7 巻 2 号 p. 1-6
発行日: 1958年
公開日: 2010/06/28
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小田 仲彬1958 年 7 巻 2 号 p. 7-14
発行日: 1958年
公開日: 2010/06/28
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遠山 健次郎, 今井 覚, 山本 哲也1958 年 7 巻 2 号 p. 15-21
発行日: 1958年
公開日: 2010/06/28
ジャーナル フリーDirect reading spectrometer combined with spectrograph has been devised for both quantitative and qualitative spectrochemical routine analyses.
Paschen and Runge mounting of 2.2m concave diffraction grating is used, and 10 exit slits and photomultipliers for direct reading analysis of alloying constituents of steel, and 100 feet roll film camera for qualitative analysis are provided for the spectrometer. Fundamental investigation of high alloy steel analysis by the fully automatic high precision process is described.抄録全体を表示PDF形式でダウンロード (5347K) -
直線外挿法の応用遠山 一郎, 高内 啓一1958 年 7 巻 2 号 p. 22-25
発行日: 1958年
公開日: 2010/06/28
ジャーナル フリーFlame photometric determination of 0.001% Na in primary standard potassium iodate by applying the “ Linear Extraporation Method ” is reported.
By reason of the working curve of Na in 1% KIO3 solution being linear up to 1 p.p.m. Na content and its background flat, the above method becomes applicable.
Under the condition of oxygen pressure 13 psi, acetylene pressure 3.5 psi, slit width 0.02 mm, and by using Beckman DU flame photometer with photomultiplier, 0.001% Na in KIO3 was determined with good precision. If sufficient care is taken to prevent the intrusion of Na, this method is more simple and more rapid as compared with the usual method.抄録全体を表示PDF形式でダウンロード (498K) -
島津 備愛, 佐野 貞雄, 松井 浩1958 年 7 巻 2 号 p. 26-32
発行日: 1958年
公開日: 2011/02/23
ジャーナル フリーIn spectrochemical analysis of steels, the effect of coexisting elements, carbon in particular, has become a subject of discussion. R. Bartel and A. Goldblatt reported that the elimination of metallurgical effect of carbon content by critically damped discharge was due to the formation of graphite deposit on the sample electrode.
By using Applied Research Laboratories 1.5 m Industrial Research Quantometer, low alloy steel, spring steel and cast iron of known chemical composition are excited with low voltage spark discharge (C=12μF, L =50μH, R=5.Ω, V= 940V) and high voltage spark discharges (C=0. 007μF, L=0, R =residual, V=15 kV and C=0.007μF, L=410μH, R=residual, V=15 kV). Graphite, copper and magnesium are used as the counter electrode to examine its effect. Working curves for silicon, manganese, copper, nickel and chromium are obtained by using low alloy steel, spring steel and cast iron, and are examined whether they fall on a single curve.
It is found that the results of R. Bartel and A. Goldblatt are not always correct; working curves for chromium in low alloy steel, spring steel and cast iron fall on a single curve under all excitation conditions.抄録全体を表示PDF形式でダウンロード (757K) -
金沢 寿人, 橘 芳実, 遠山 健次郎, 山口 昇1958 年 7 巻 2 号 p. 32-41
発行日: 1958年
公開日: 2010/06/28
ジャーナル フリーAccording to the dieselization programs of national railway, the utilization of emission spectrographic analysis of used crankcase oils has been found to have practical use in the prevention of destructive engine failure.
The technique consists of determining the trace concentrations of certain key wear metals in samples of used oils taken from the engine crankcases at regular intervals.
Excellent detectability is achieved by the use of rotating disc electrode method and uni-directional high voltage spark excitation.抄録全体を表示PDF形式でダウンロード (1532K) -
大藤 能親1958 年 7 巻 2 号 p. 42-47
発行日: 1958年
公開日: 2010/06/28
ジャーナル フリーIn determining major elements by emission spectrochemical analysis, if the content of every other consituent element is small, no serious problem arises. But, if otherwise, the higher the content, the more the precision and accuracy of measurement are required.
As for the precision, it is of late almost unquestionably high since Quantometer has come into use and development and improvement have been made on equipments such as photoelectric direct reading device and a few others, enabling the application of emission spectrochemical analysis to be made widely in the field of high alloy and non-metallic compound studies.
But, when it comes to the analysis of complex high alloys, despite the use of multi-source emission that affords much better accuracy than with the conventional Feussner type emission method, numbers of standard samples for every alloy range are to be prepared in special cases to prevent the fall in accuracy by metallographical reason.
In the case of high alloys, improvement of accuracy by simplifying the measuring method and of technique of preparing samples to avoid segregation as much as possible is considered important as the remaining problem.
For non-metallic compounds, good precision and accuracy are now being obtained by fusing and homogenizing the material with lithium carbonate and borax, grounding and mixing it with graphite powder, then briquetting, in preparing the sample for analysis.抄録全体を表示PDF形式でダウンロード (958K) -
南 茂夫, 吉永 弘, 藤田 茂, 富島 範人1958 年 7 巻 2 号 p. 48-57
発行日: 1958年
公開日: 2010/06/28
ジャーナル フリーNowadays in practice, selection of analytical line pairs is generally carried out on the bases of the excitation energies of the lines belonging a pair being as close as possible and the lines free from self-absorption.
In order to obtain some of the fundamental data, the relative intensities of spectral lines emitted from Al and Cd samples under various excitation conditions have been measured. Some of the data show that the variation of relative intensity depends not only on the excitation energy and the magnitude of self-absorption but also on the kind of term of each spectral line.
It is emphasized that the analytical line pairs should be selected in consideration of the kind of term beside the excitation energy and self-absorption of each spectral line.抄録全体を表示PDF形式でダウンロード (2422K)
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