THIXOTROPICALLY MOLDED PRODUCT

To provide a thixotropically molded product with high vibration damping capacity.SOLUTION: A thixotropically molded product includes: a matrix portion containing Mg as a main component; a C particle portion dispersed in the matrix portion and containing C as a main component; a first Mg particle por...

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Bibliographische Detailangaben
Hauptverfasser:	HIDESHIMA YASUTOSHI, IWASHITA SETSUYA, MAEDA IKUYA, OZAKI KOICHI, UCHIZONO SHUNSUKE, FUKUDA TADAO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	To provide a thixotropically molded product with high vibration damping capacity.SOLUTION: A thixotropically molded product includes: a matrix portion containing Mg as a main component; a C particle portion dispersed in the matrix portion and containing C as a main component; a first Mg particle portion dispersed in the matrix portion and containing Mg2Si; and a second Mg particle portion dispersed in the matrix portion and containing MgO, where the C content is from 3.0 mass% to 40.0 mass% inclusive. By observing a cross section, the total area fraction of the first and second Mg particle portions in the range of a 500 μm square around a point at a depth of 1 mm from a surface is from 0.05% to 10.0% inclusive.SELECTED DRAWING: Figure 1 【課題】高い振動減衰性を有するチクソ成形体を提供すること。【解決手段】Ｍｇを主成分とするマトリックス部と、前記マトリックス部中に分散し、Ｃを主成分とするＣ粒子部と、前記マトリックス部中に分散し、Ｍｇ２Ｓｉを含む第１Ｍｇ粒子部と、前記マトリックス部中に分散し、ＭｇＯを含む第２Ｍｇ粒子部と、を有し、Ｃの含有率が３．０質量％以上４０．０質量％以下であることを特徴とするチクソ成形体。また、断面を観察し、表面からの深さが１ｍｍの点を中心とする５００μｍ角の範囲における前記第１Ｍｇ粒子部および前記第２Ｍｇ粒子部の合計の面積分率が０．０５％以上１０．０％以下であることが好ましい。【選択図】図１