Studies on the Sintering of Fe, Fe-6%Al, and Alnico Powdered Compacts at High Temperature Observed by High-Temperature Microscope

Kunio Shida

doi:10.2497/jjspm.10.221

鉄,鉄-6%アルミニウム,およびアルニコ系圧粉体の高温顕微鏡による焼結現象の観察について

信太邦夫

著者情報

ジャーナルオープンアクセス

1963 年 10 巻 5 号 p. 221-225

DOI https://doi.org/10.2497/jjspm.10.221

詳細

発行日: 1963/10/25 受付日: 1963/08/15 J-STAGE公開日: 2009/05/22 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2009/05/22 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : Speci-mens of Fe, Fe-6%Al, and Alnico system (including 9%Al, 14%Ni, 24%Co, 3ooCu and balance Fe) powdered compact of 10mmφ × l0mm size compressed by 3t/cm² and polished lightly but not etched were studied under a high-temperature microscope, to examine continuously the change in structure under elevated temperature in vacuo from room temperature up to 1200°C. The results obtained were as follows: The change in microstructure of Fe, Fe-6%/Al and Alnico system powdered compacts under elevated temperature are illustrated in Fig. 2, Fig. 3 and Fig. 4, respectively. The specimen consisting of only Fe powder showed steady change, while in the case of specimens containing Fe-50%Al alloy powder, as progressively higher temperatures were employed, the grains of Fe-50%Al alloy were broken-down to fine particles. This break-down behaviour began at Ca. 700°C and then continued until almost 1190°C, which is the melting point of Fe-50%Al alloy. Changes in dimensions of specimens under elevated temperature corresponded with their changes in microstructures.
Right : Speci-mens of Fe, Fe-6%Al, and Alnico system (including 9%Al, 14%Ni, 24%Co, 3ooCu and balance Fe) powdered compact of 10mm∅ × l0mm size compressed by 3t/cm² and polished lightly but not etched were studied under a high-temperature microscope, to examine continuously the change in structure under elevated temperature in vacuo from room temperature up to 1200°C. The results obtained were as follows: The change in microstructure of Fe, Fe-6%/Al and Alnico system powdered compacts under elevated temperature are illustrated in Fig. 2, Fig. 3 and Fig. 4, respectively. The specimen consisting of only Fe powder showed steady change, while in the case of specimens containing Fe-50%Al alloy powder, as progressively higher temperatures were employed, the grains of Fe-50%Al alloy were broken-down to fine particles. This break-down behaviour began at Ca. 700°C and then continued until almost 1190°C, which is the melting point of Fe-50%Al alloy. Changes in dimensions of specimens under elevated temperature corresponded with their changes in microstructures.

訂正日: 2009/05/22 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

Speci-mens of Fe, Fe-6%Al, and Alnico system (including 9%Al, 14%Ni, 24%Co, 3ooCu and balance Fe) powdered compact of 10mm∅ × l0mm size compressed by 3t/cm² and polished lightly but not etched were studied under a high-temperature microscope, to examine continuously the change in structure under elevated temperature in vacuo from room temperature up to 1200°C. The results obtained were as follows: The change in microstructure of Fe, Fe-6%/Al and Alnico system powdered compacts under elevated temperature are illustrated in Fig. 2, Fig. 3 and Fig. 4, respectively. The specimen consisting of only Fe powder showed steady change, while in the case of specimens containing Fe-50%Al alloy powder, as progressively higher temperatures were employed, the grains of Fe-50%Al alloy were broken-down to fine particles. This break-down behaviour began at Ca. 700°C and then continued until almost 1190°C, which is the melting point of Fe-50%Al alloy. Changes in dimensions of specimens under elevated temperature corresponded with their changes in microstructures.

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