کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10426600 908103 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plasma paste boronizing of AISI 8620, 52100 and 440C steels
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Plasma paste boronizing of AISI 8620, 52100 and 440C steels
چکیده انگلیسی
In the present study, AISI 8620, 52100 and 440C steels were plasma paste boronized (PPB) by using 100% borax paste. PPB process was carried out in a dc plasma system at temperature of 700 and 800 °C for 3 and 5 h in a gas mixture of 70%H2-30%Ar under a constant pressure of 4 mbar. The properties of boride layer were evaluated by optical microscopy, X-ray diffraction and Vickers micro-hardness tester. X-ray diffraction analysis of boride layers on the surface of the steels revealed FeB and Fe2B phases for 52100 and 8620 steels and FeB, Fe2B, CrB and Cr2B borides for 440C steel. PPB process showed that since the plasma activated the chemical reaction more, a thicker boride layer was formed than conventional boronizing methods at similar temperatures. It was possible to establish boride layer with the same thickness at lower temperatures in plasma environment by using borax paste.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 32, Issue 4, April 2011, Pages 2380-2386
نویسندگان
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