Nucleation Catalysis

Glicksman, M. E.

doi:10.1007/978-1-4419-7344-3_12

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…[8] If the thickness of reaction product is very small compared to the substrate thickness, then the elastic mismatch is entirely distributed into the reaction product. [8] The free (strain) energy density, E e , associated with isothermal linear-elastic straining of a crystalline reaction product (as given by Hooke's law) is [9] :…”

Section: Introductionmentioning

confidence: 99%

Effects of Interfacial Lattice Mismatching on Wetting of Ni-Plated Steel by Magnesium

Nasiri

Lee

Weckman

et al. 2014

Metall Mater Trans A

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In this study, wetting has been characterized by measuring the contact angles of AZ92 Mg alloy on Ni-electroplated steel as a function of temperature. Reactions between molten Mg and Ni led to a contact angle of about 86 deg in the temperature range of 891 K to 1023 K (618°C to 750°C) (denoted as Mode I) and a dramatic decrease to about 46 deg in the temperature range of 1097 K to 1293 K (824°C to 1020°C) (denoted as Mode II). Scanning and transmission electron microscopy (SEM and TEM) indicated that AlNi + Mg 2 Ni reaction products were produced between Mg and steel (Mg-AlNi-Mg 2 Ni-Ni-Fe) in Mode I, and just AlNi between Mg and steel (Mg-AlNi-Fe) in Mode II. From high resolution TEM analysis, the measured interplanar mismatches for different formed interfaces in Modes I and II were 17 pct f1011g Mg ==f110g AlNi -104:3 pct f110g AlNi == 1010 f g Mg 2 Ni -114 pct 0003 f g Mg 2 Ni ==f111g Ni and 18 pct f1011g Mg ==f110g AlNi -5 pct 110 f g AlNi ==f110g Fe , respectively. An edge-to-edge crystallographic model analysis confirmed that Mg 2 Ni produced larger lattice mismatching between interfaces with calculated minimum interplanar mismatches of 16:4 pct f1011g Mg ==f110g AlNi -108:3 pct f110g AlNi ==f1011g Mg 2 Ni -17:2 pct f1011g Mg 2 Ni ==f100g Ni for Mode I and 16:4 pct f1011g Mg ==f110g AlNi -0:6 pct f111g AlNi ==f111g Fe for Mode II. Therefore, it is suggested that the poor wettability in Mode I was caused by the existence of Mg 2 Ni since AlNi was the immediate layer contacting molten Mg in both Modes I and II, and the presence of Mg 2 Ni increases the interfacial strain energy of the system. This study has clearly demonstrated that the lattice mismatching at the interfaces between reaction product(s) and substrate, which are not in direct contact with the liquid, can greatly influence the wetting of the liquid.

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Section: Introductionmentioning

confidence: 99%