Akademik Veri Yönetim Sistemi
11th International Conference on Tribology – SERBIATRIB '09, Belgrade, Sırbistan, 13 - 15 Mayıs 2009, cilt.1, sa.1, ss.68-73, (Tam Metin Bildiri)
The wear behaviours of plasma nitrided of AISI H13 and 722M24 steels were compared using different tribological conditions after removed white layer from their surfaces. Because it has been gotten advantage to remove white layer from the diffusion layers. Test samples prepared from these materials which were plasma nitrided at different temperatures. Wear tests were carried out under dry and lubricated abrasive conditions at elevated temperatures between 50-200 ºC. Naturally, wear losses for dry conditions were higher than for lubricated abrasive conditions. And also, wear tests carried out on a general purpose wear machine having a special heating unit with disc-disc sample configuration. White layer on the plasma nitrided surfaces of their steels were removed before wear tests. Both materials have shown linearly similar wear losess at elevated temperatures. Diffusion layer of materials after plasma nitrided is important against to wear losses. These losses are dependent to the thickness of diffusion layers. Wear losses were decreased for thick diffusion layers while wear losses were increased for thin diffusion layers of both materials. Other properties for both materials of long term plasma nitrided, changing times from instable situation to stable situation were very short during wear tests