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Volume 17 (1968 - 196･･･
- Issue 6 Pages 237-
- Issue 5 Pages 187-
- Issue 4 Pages 133-
- Issue 3 Pages 95-
- Issue 2 Pages 53-
- Issue 1 Pages 1-
Volume 17, Issue 5
Displaying 1-5 of 5 articles from this issue
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Masatoshi NAKAMURA1969 Volume 17 Issue 5 Pages 187-198
Published: January 31, 1969
Released on J-STAGE: June 28, 2010
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Shigeru TSUTSUI, Shigeo MINAMI1969 Volume 17 Issue 5 Pages 199-214
Published: January 31, 1969
Released on J-STAGE: June 28, 2010
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Jiro KASHIMA, Masaaki KUBOTA, Toshio KAWASAKI1969 Volume 17 Issue 5 Pages 215-223
Published: January 31, 1969
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA method to homogenize the microstructure by re-melting of the samplies in argon atmosphere is appllied to the emission spectrographic analysis of low alloy cast irons.The sample is packed in a quarts or alumina crucible together with 5 per cent of tin and is melted with a high frequency induction furnace.Such treatment makes it possible to analyse the samples whose metallurgical histroy is unknown.
According to the analytical results obtained for chromium, copper, ni ckel, molybdenum, vanadium and titanium, the addition of tin is effective for the improvement in precision and accuracy.View full abstractDownload PDF (965K) -
Shigeru TSUTSUI, Katsuji YAMASHITA, Shigeo MINAMI1969 Volume 17 Issue 5 Pages 224-231
Published: January 31, 1969
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA simple analog technique for the computation of transmittance from the data obtained by single beam recording spectrometers is described.Wavelength scanning of the spectrometer is executed by a pulse motor connected to the scanning shaft, and operated by pulses reproduced from one channel of a conventional multi-track magnetic tape recorder set in play back mode.Prior to the computation, the reference-beam signal is recorded in another channel of the tape recorder.In the subsequent scan for presenting the transmittance curve, the stored reference-beam signal is fed into a servodivider together with the sample-beam signal which is derectly derived from the spectrometer.The wavelength scanning by means of the pulse motor makes it possible to keep the accurate synchronism between the reference beam and sample-beam signals.The servodivider used is easily obtained by remodeling a conventional chart recorder.The overall accuracy of the system operated in conjunction with a spectrometer is better than0.5% for a considerably high reference signal level.View full abstractDownload PDF (2472K) -
Wataru SUETAKA1969 Volume 17 Issue 5 Pages 231-233
Published: January 31, 1969
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (366K)
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