Preparation and mechanism of active Mo–Mn metallization on ZTA particles surface and interfacial bonding of reinforced iron matrix composite |
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| Affiliation: | 1. Institut für Struktur – und Funktionskeramik, Montanuniversitaet Leoben, Austria;2. Materials Center Leoben Forschung GmbH, Leoben, Austria;3. EPCOS OHG, Deutschlandsberg, Austria;1. Nippon Light Metal Co., Ltd., Casting Development Center, Kambara 1-34-1, Shimizu-ku, Shizuoka-shi 421-3291, Japan;2. Chonbuk National University, School of Advanced Materials Engineering, 664-14, Deokjin-dong 1ga, Deokjin-gu, Jeonju 561-756, Republic of Korea;1. Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. College of Mechanics, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | ZrO2 toughened Al2O3 particles (ZTAp) have poor wettability with iron, and therefore some defects are easily formed at the interface between ZTAp and iron matrix, which may lead to material failure. This paper illustrates that the ZTAp were modified on the surface by the active Mo–Mn metallization, and thus, they were used as the reinforcing phases to prepare the iron-matrix composite (ZTAp/Fe composite). It is concluded that the sponge-like skeleton structure was formed on the surface of ZTAp after the metallization. The interface of ZTAp/Fe composite, which has been proved to have bearing and transitional capacity by scratch test, was formed by chemical bonding with elemental diffusion, besides mechanical bonding. The metallization mechanism of elemental diffusion can be explained by the migration of glass phase, and the elements diffusion between the interface and iron matrix is to form solid solution. |
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| Keywords: | Iron matrix composite ZTA particles Surface modification Interface Active Mo–Mn metallization |
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