Investigations of Wetting Properties of Stainless Steel by Molten Multi-Component Oxides

Jin Wang; Nozomu Matsuda; Nobuya Shinozaki; Hidenori Era; Takanobu Shiraishi

doi:10.4028/www.scientific.net/AMR.690-693.2126

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Investigations of Wetting Properties of Stainless...

Investigations of Wetting Properties of Stainless Steel by Molten Multi-Component Oxides

Abstract:

The wettability between molten impregnating materials and thermal spray coatings is an important factor in post-treatment process of porous coatings. Here, we present the study of wetting behavior of stainless steel substrates by multi-component oxides, using the sessile drop method. The multi-component oxides was mainly composed by SiO₂ and Al₂O₃ and also with a little K₂O, Na₂O etc. At 1273K and 1353K, we found that the contact angles stabilized at around 45° and 75° respectively. The micro-observation confirmed that the evaporation of alkali metal oxides become a leading position in molten multi-component oxides evaporation at 1353K. As a result, the rupture of NaO and KO bonds will occur and lattice network structure of multi-component oxides reconstruct at excessively high temperature, leading the molten oxides to a higher viscosity and poorer wettability. As the basic researches, this paper also provide a theoretical basis for the deeply study on the post penetration treatment.

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Periodical:

Advanced Materials Research (Volumes 690-693)

Pages:

2126-2130

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.690-693.2126

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Online since:

May 2013

Authors:

Jin Wang, Nozomu Matsuda, Nobuya Shinozaki, Hidenori Era, Takanobu Shiraishi

Keywords:

Multi-Component Oxide, SUS316L Stainless Steel, Thermally Sprayed Coating, Wetting Behavior

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