Microstructure of Mo powders sintered with Ni and Ni3Al powders

Takashi Sakamoto, Minoru Nishida, Kenji Okazaki

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

When Ni or Ni3Al powders are added to Mo powders, sintering is greatly promoted to result in significantly higher densities even at lower temperatures than one-half of the homologous temperature for Mo. The activation energies obtained for mixed sintering are lower than that required for mutual volume diffusion between Mo and Ni. TEM observations of microstructure after sintering Mo and Ni powders at 1573 K revealed the formation of a MoNi phase at interfaces of Mo particles. When sintered at 1673 K, not only Mo-Ni phase is seen at the interface but also the Mo particle surface became slightly wavy as a result of contacting with the liquid Mo-Ni phase. When Mo powders were sintered with a 5 wt.% of Ni3Al alloy powders at 1573 K, the microstructure obtained by quenching from this temperature is a mixture of Mo and Ni3Al. But the microstructure obtained by furnace-cooling is a mixture of Mo, Mo-Ni and Ni3Al which is surrounded by MoNi3.

元の言語英語
ページ(範囲)1221-1225
ページ数5
ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
46
発行部数12
DOI
出版物ステータス出版済み - 1 1 1999
外部発表Yes

Fingerprint

Powders
Microstructure
Sintering
Temperature
Quenching
Furnaces
Activation energy
Transmission electron microscopy
Cooling
Liquids

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Microstructure of Mo powders sintered with Ni and Ni3Al powders. / Sakamoto, Takashi; Nishida, Minoru; Okazaki, Kenji.

:: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 巻 46, 番号 12, 01.01.1999, p. 1221-1225.

研究成果: ジャーナルへの寄稿記事

@article{ce68571134cf49cda5af52418905c364,
title = "Microstructure of Mo powders sintered with Ni and Ni3Al powders",
abstract = "When Ni or Ni3Al powders are added to Mo powders, sintering is greatly promoted to result in significantly higher densities even at lower temperatures than one-half of the homologous temperature for Mo. The activation energies obtained for mixed sintering are lower than that required for mutual volume diffusion between Mo and Ni. TEM observations of microstructure after sintering Mo and Ni powders at 1573 K revealed the formation of a MoNi phase at interfaces of Mo particles. When sintered at 1673 K, not only Mo-Ni phase is seen at the interface but also the Mo particle surface became slightly wavy as a result of contacting with the liquid Mo-Ni phase. When Mo powders were sintered with a 5 wt.{\%} of Ni3Al alloy powders at 1573 K, the microstructure obtained by quenching from this temperature is a mixture of Mo and Ni3Al. But the microstructure obtained by furnace-cooling is a mixture of Mo, Mo-Ni and Ni3Al which is surrounded by MoNi3.",
author = "Takashi Sakamoto and Minoru Nishida and Kenji Okazaki",
year = "1999",
month = "1",
day = "1",
doi = "10.2497/jjspm.46.1221",
language = "English",
volume = "46",
pages = "1221--1225",
journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",
issn = "0532-8799",
publisher = "Japan Society of Powder and Powder Metallurgy",
number = "12",

}

TY - JOUR

T1 - Microstructure of Mo powders sintered with Ni and Ni3Al powders

AU - Sakamoto, Takashi

AU - Nishida, Minoru

AU - Okazaki, Kenji

PY - 1999/1/1

Y1 - 1999/1/1

N2 - When Ni or Ni3Al powders are added to Mo powders, sintering is greatly promoted to result in significantly higher densities even at lower temperatures than one-half of the homologous temperature for Mo. The activation energies obtained for mixed sintering are lower than that required for mutual volume diffusion between Mo and Ni. TEM observations of microstructure after sintering Mo and Ni powders at 1573 K revealed the formation of a MoNi phase at interfaces of Mo particles. When sintered at 1673 K, not only Mo-Ni phase is seen at the interface but also the Mo particle surface became slightly wavy as a result of contacting with the liquid Mo-Ni phase. When Mo powders were sintered with a 5 wt.% of Ni3Al alloy powders at 1573 K, the microstructure obtained by quenching from this temperature is a mixture of Mo and Ni3Al. But the microstructure obtained by furnace-cooling is a mixture of Mo, Mo-Ni and Ni3Al which is surrounded by MoNi3.

AB - When Ni or Ni3Al powders are added to Mo powders, sintering is greatly promoted to result in significantly higher densities even at lower temperatures than one-half of the homologous temperature for Mo. The activation energies obtained for mixed sintering are lower than that required for mutual volume diffusion between Mo and Ni. TEM observations of microstructure after sintering Mo and Ni powders at 1573 K revealed the formation of a MoNi phase at interfaces of Mo particles. When sintered at 1673 K, not only Mo-Ni phase is seen at the interface but also the Mo particle surface became slightly wavy as a result of contacting with the liquid Mo-Ni phase. When Mo powders were sintered with a 5 wt.% of Ni3Al alloy powders at 1573 K, the microstructure obtained by quenching from this temperature is a mixture of Mo and Ni3Al. But the microstructure obtained by furnace-cooling is a mixture of Mo, Mo-Ni and Ni3Al which is surrounded by MoNi3.

UR - http://www.scopus.com/inward/record.url?scp=0033351694&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033351694&partnerID=8YFLogxK

U2 - 10.2497/jjspm.46.1221

DO - 10.2497/jjspm.46.1221

M3 - Article

AN - SCOPUS:0033351694

VL - 46

SP - 1221

EP - 1225

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

SN - 0532-8799

IS - 12

ER -