巻号一覧
16 巻, 3 号
選択された号の論文の5件中1～5を表示しています
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スパークおよびI.G.ACアーク法による河島 磯志, 宮崎 武志, 田中 勇1967 年 16 巻 3 号 p. 103-112
発行日: 1967/12/31
公開日: 2010/06/28
ジャーナル フリーUsing the point-to-plane spark and ignited a.c.arc techniques, with a JACO Ebert convertible plane grating spectrograph and a typewriter read-out system, the photoelectric emission analysis of carbon steel and low-alloy steel is studied, as a rapid and accurate method for the routine work which should take the place of the chemical method in the authors' Laboratory.In preparing the calibration curves of twelve elements (Si, Mn, Cu, Ni, Cr, Mo, V, Ti, Co, Al, Sn and W), fortyseven NBS and BS standard samples of carbon steel and low-alloy steel are used.The results show that the accuracy of these spectrometric methods is as good as that of the chemical analysis and each element is measurable with in an error of 20% when the concentration is of the order of 0.01%.Though the spark method is superior to the ignited a.c.arc method in linearity of the calibration curves and in the freedom from the influence of interfering lines and CN-band, the latter is superior to the former in the intensity of spectral lines of aluminium, cobalt, tin and tungsten.The influence of the shape of the graphite counter electrode on the intensity of the arc or spark spectrum lines is also discussed.抄録全体を表示PDF形式でダウンロード (1305K) -
高木 亨, 松井 松長1967 年 16 巻 3 号 p. 112-118
発行日: 1967/12/31
公開日: 2010/06/28
ジャーナル フリーIn designing infrared communication and detection systems, it is necessary to know the spectral and spatial radiance distribution of the sky-and terrain-background radiation.
Therefore, the authors measured the background radiation under the various conditions by an infrared spectral radiometer with a NaCl prism.
In this paper, the measuring device and the calibration method are described, and the followings are discussed on the results of our observations:
(1) The dependence of the atmospheric radiation on the zenith angles.
(2) The apparent temperature of the ozonosphere.
(3) The time-variation in the atmospheric radiation.
(4) The absorption by the lower atmosphere of the terrain radiation.抄録全体を表示PDF形式でダウンロード (997K) -
鹿島 次郎, 久保田 正明1967 年 16 巻 3 号 p. 119-133
発行日: 1967/12/31
公開日: 2010/06/28
ジャーナル フリーA study is made on preparation of cast iron samples which show various microstructures in order to determine the silicon and manganese contents by the emission spectrographic analysis.The chipped sample (approximately 10-15 gr.) is packed into a quartz crucible together with tin shot and is melted in a high frequency induction furnace with a flow of argon at the rate of 100 to 200 ml per minute.It is sufficient for restraining the graphitization to add 5 or 8 per cent of tin into a hypo-eutectic or a hyper-eutectic cast iron, respectively.It takes about 7 minutes to prepare a sample by this re-melting method.
Precision of measurement of manganese in samples is 4 to 11 per cent without tin, while it is 2 per cent in the case that tin is added in samples.As the coefficient of variation for silicon, however, is much larger than that of manganese, it is thought that more studies must be made on the state of silicon in samples.
Generally speaking, the appearance of ledebulite and pearlite decreases the iron line intensity and that of ferrite tends to the increase of intensity.In white cast iron, the co-existence of tin increases the iron, silicon and manganes line intensities because tin promotes the excitation and emission. Reversely, the iron intensity of grey cast iron decreases by an addition of tin and the result attributes to the increase of pearlite in samples.
Similarly as for the spectral intensity of component elements, it is considered that the formation of compounds such as carbide affects on the intensity.抄録全体を表示PDF形式でダウンロード (1775K) -
鹿島 次郎, 久保田 正明1967 年 16 巻 3 号 p. 133-141
発行日: 1967/12/31
公開日: 2010/06/28
ジャーナル フリーA method of simple spectrometric analysis of the type metals is studied through the atmosphere effect.High voltage spark excitation of a flat sample by the point-to-plane technique is employed .As momentary intensities of analytical lines and internal lead lines are determined photometrically, it is necessary to obtain stabilized spark discharges.
Various gases such as air, nitrogen, and argon are introduced into the analytical gap in the open air to make the vaporization of samples uniform.According to the experimental results, it is most desirable to supply the argon near the face of the sample through a graphite counter electrode at the flow rate of 2 1/min.The standard deviations are 0.10% for 2.10% tin and 0.27% for 12.59% antimony.抄録全体を表示PDF形式でダウンロード (1184K) -
塚本 昭, 清水 郁造, 大畠 正彦1967 年 16 巻 3 号 p. 142-146
発行日: 1967/12/31
公開日: 2010/06/28
ジャーナル フリーUsing a solid specimen, studies are made on the analysis of trace cerium in cast iron with the Shimadzu and A.R.L.X-ray Quantometer (V.X.Q.type).
A favorable working curve for cerium is obtained in the concentration range of 0.0020 to 0.0240 per cent, and it is found that the concentration of cerium from 0.0040 to 0.0050 per cent in cast iron is determinable with a coefficient of variation within 4-6 per cent for the integration time of ten minutes by the external standard monitor system.
As a solid specimen is used, it is easier to prepare the specimen by the present method than by other methods, such as the wet chemical analysis and the fluorescent X-ray analysis using powdered or liquid samples.
Therefore, this method is very effective in analysis for controlling and the time required for 1 specimen is about 25 minutes.抄録全体を表示PDF形式でダウンロード (595K)
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