Effect of spinning condition on non-crystallinity of Fe77.5Si7.5B15 (at%) wire produced by in-rotating-water spinning method

Kyu Sang Cho, Hiroshi Takamatsu, Hiroshi Honda, Kenji Morinaga

Research output: Contribution to journalArticle

Abstract

The effect of spinning condition on the quality of Fe77.5Si7.5B15 (at%) wires produced by the In-Rotating-Water Spinning Method was examined experimentally. The diameter of the injection nozzle was 0.25 mm. Long continuous wires with round cross section were obtained when the molten-jet velocity νj was a little higher than the drum velocity νd, whereas the wire became meanderous with the increase in νjd. The heat of crystallization ΔH, which expresses the degree of non-crystallinity of the wire, remained almost constant for 0.77 < νjd < 1. For this case the wires were estimated to be almost amorphous judged from the X-ray diffraction pattern and the scanning electron micrograph. For 1 < νjd < 1.32, however, ΔH decreased with increasing νjd. The temperature distribution of the jet was measured by the photo-calorimetric method. For the water temperature of 10°C, the average cooling rate of the jet between 1470 to 1200 K, was found to be 6 × 104 to 9 × 104 K/s. The measured cooling rate did not show any correlation with ΔH. This indicated that the quality of the wire was determined by the cooling rate in the downstream region with a lower temperature.

Original languageEnglish
Pages (from-to)662-668
Number of pages7
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume62
Issue number7
DOIs
Publication statusPublished - Jan 1 1998

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metal spinning
wire
Wire
Water
water
Cooling
cooling
drums
water temperature
Crystallization
Diffraction patterns
nozzles
Molten materials
Nozzles
Temperature distribution
temperature distribution
diffraction patterns
crystallization
injection
Scanning

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effect of spinning condition on non-crystallinity of Fe77.5Si7.5B15 (at%) wire produced by in-rotating-water spinning method. / Cho, Kyu Sang; Takamatsu, Hiroshi; Honda, Hiroshi; Morinaga, Kenji.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 62, No. 7, 01.01.1998, p. 662-668.

Research output: Contribution to journalArticle

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abstract = "The effect of spinning condition on the quality of Fe77.5Si7.5B15 (at{\%}) wires produced by the In-Rotating-Water Spinning Method was examined experimentally. The diameter of the injection nozzle was 0.25 mm. Long continuous wires with round cross section were obtained when the molten-jet velocity νj was a little higher than the drum velocity νd, whereas the wire became meanderous with the increase in νj/νd. The heat of crystallization ΔH, which expresses the degree of non-crystallinity of the wire, remained almost constant for 0.77 < νj/νd < 1. For this case the wires were estimated to be almost amorphous judged from the X-ray diffraction pattern and the scanning electron micrograph. For 1 < νj/νd < 1.32, however, ΔH decreased with increasing νj/νd. The temperature distribution of the jet was measured by the photo-calorimetric method. For the water temperature of 10°C, the average cooling rate of the jet between 1470 to 1200 K, was found to be 6 × 104 to 9 × 104 K/s. The measured cooling rate did not show any correlation with ΔH. This indicated that the quality of the wire was determined by the cooling rate in the downstream region with a lower temperature.",
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