Pulse Current Pressure Sintering of Nb2Al Alloy Powder Prepared by Mechanical Alloying.
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- Nose Masateru
- Takaoka National College
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- Nagae Takekazu
- Toyama Industrial Technology Center
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- Yokota Masaru
- Takaoka National College
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- Saji Shigeoki
- Faculty of Engineering, Toyama University
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- Hashimoto Yoshihito
- Toyama University
Bibliographic Information
- Other Title
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- 多元系混合粉の焼結過程および焼結機構 Nb2Al組成MA粉末のパルス通電加圧焼結
- Nb2Al ソセイ MA フンマツ ノ パルス ツウデン カアツ ショウケツ
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Abstract
The alloy powder of 2Nb/Al composition was prepared by mechanical alloying. The alloy powder became homogeneous and showed an amorphous-like pattern in X-ray diffraction after milling with a small amount of additives for 396ks. This mechanically alloyed powder kept the amorphous phase even after heating up to 973K for 600s, and was changed to Nb2Al phase by heating over the temperature of 1073K. The compact of this powder sintered at 973K for 300s by pulse current pressure sintering (PCPS) was not consolidated, although the amorphous structure was kept even after heating. On the other hand, the compact sintered at 1673K by PCPS method consisted of mainly Nb2Al phase and a small amount of uncertain phase. The density for the compacts sintered at 1673K was 7.16 × 103 kg/m3, which is about 5% higher than that for Nb2Al. Vickers hardness was 1000-1100, which is 15 to 30 % higher than that of Nb2Al (850-870). It can be speculated that these results are attributed to the finely dispersed particles containing Fe, which came from the container and/or balls for the mechanical alloying.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 44 (12), 1115-1120, 1997
Japan Society of Powder and Powder Metallurgy
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Details
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- CRID
- 1390001206308856448
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- NII Article ID
- 10002014701
- 10003381002
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 4380699
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed