Jung, WY Song, HS Park, SW Kim, DY 2024-01-21T19:41:01Z 2024-01-21T19:41:01Z 2022-01-11 1996-02 1073-5615 https://pubs.kist.re.kr/handle/201004/144535 The contact angles of liquid Al on polycrystalline Al2O3 determined by the conventional sessile drop method were obtuse (similar to 120 deg) up to 900 degrees C but decreased rapidly at 1000 degrees C. When the molten Al was squeezed through a narrow orifice and dropped onto-the substrate, the contact angle at 900 degrees C was 77 deg and decreased linearly with temperature. At 1000 degrees C and 1100 degrees C, the contact angles decreased slowly with holding times up to 50 and 6 hours, respectively. At 1200 degrees C, the contact angle also decreased with holding time up to 40 minutes, after which it oscillated, resulting in a ring pattern on the substrate. The structural change of the Al2O3 substrate surface is suggested to be an important variable that determines the wetting behavior of the Al-Al2O3 system. English SPRINGER ALUMINUM WETTABILITY ALLOYS Variation of contact angles with temperature and time in the Al-Al2O3 system Article 10.1007/BF02915076 1 METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, v.27, no.1, pp.51 - 55 METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 27 1 51 55 scie scopus A1996TW62100006 2-s2.0-0030087110 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article ALUMINUM WETTABILITY ALLOYS