Ferritik-perlitik küresel grafitli dökme demirin adhesif aşınma dayanımı üzerinde borlama yüzey işleminin etkisi

Bu çalışmada ferritik-perlitik küresel grafitli dökme demir malzemenin adhasif aşınma direnci üzerinde borlama ısıl işleminin etkisi araştırılmıştır. Borlama ısıl işlemi, 960 ºC’de 6 saat Ekabor II borlama malzemesinde gerçekleştirilmiştir. Adhasif aşınma testleri disk üzerinde pim tipi aşınma cihazında 60 N yük altında 1 m/sn kayma hızında ve 3600 m, 7200 m, 10800 m ve 21600 m kayma mesafesinde gerçekleştirilmiştir. Adhasif aşınma test sonuçları, borlanmış küresel grafitli dökme demirin adhasif aşınma direncinin, dökülmüş haldeki ferritik-perlitk küresel grafitli dökme demirinkine göre 50 kat daha yüksek olduğunu göstermektedir.

Effect of boronizing surface treatment on the adhesive wear behavior of ferritic-perlitic ductile iron

In this study, effect of boronizing surface treatment on adhesive wear behavior of ferritic-pearlitic ductile iron was studied. Boronizing was performed in Ekabor II boronizing agent at 960 ºC for 6 hours. Adhesive wear test was performed on pin on disc type wear tester under the load of 60 N, at sliding speed of 1 m/s for 3600 m, 7200 m ve 10800 m ve 21600 m sliding distance. Adhesive wear test results show that, wear resistance of boronized ductile iron is 50 times higher than those of ferritic-pearlitic ductile iron as-cast.

PDF

___

1. Bejar, M.A. Moreno, E., “Abrasive wear resistance of boronized carbon and low-alloy steels”, Journal of Materials Processing Technology, 173, 352–358, 2006.
2. Allaoui, O. Bouaouadja, N. Saindernan, G., “Characterization of boronized layers on a XC38 steel”, Surface & Coatings Technology, 201, 3475–3482, 2006.
3. Kulka, M. Pertek, A., “The importance of carbon content beneath iron borides after boriding of chromium and nickel-based low-carbon steel”, Applied Surface Science, 214, 161–171, 2003.
4. BAŞTÜRK, S. ERTEN, “M. Borlama İle Yüzey Sertleştirme Çalışmaları”, Mühendis ve Makina, 47, 563, 57-74.
5. Kuper U, A. Qiao,X. Stock, H.R., “Mayr, P. A novel approach to gas boronizing”, Surface and Coatings Technology, 130, 87-94, 2000.
6. Usta, M. Ozbek, I Bindal, C. Ucisik,A. H. Ingoled, S. Liang, H., “A comparative study of borided pure niobium, tungsten and chromium”, Vacuum, 80, 1321–1325, 2006.
7. Uzunov, N. Ivanov, R., “Aluminothermic powder boriding of steel”, Applied Surface Science, 225, 72–77, 2004.
8. Selcuk, B. Ipek, R. Karamıs¸ M.B., “A study on friction and wear behaviour of carburized, carbonitrided and borided AISI 1020 and 5115 steels”, Journal of Materials Processing Technology, 141, 189–196, 2003.
9. Xia, Yan-qiu, Liu, Wei-Min, Yu, Lai-Gui, Han, Ning Xue, Qun-Ji, “Investigation on the tribological properties of boron and lanthanum permeated mild steel”, Materials Science and Engineering, A354, 17-23, 2003.
10. Sen, S. Sen, U. Bindal, C., “Tribological properties of oxidised boride coatings grown on AISI 4140 steel”, Materials Letters, 60, 3481– 3486, 2006.
11. Mann, B.S., “Boronizing cast martensitic chromium nickel stainless steel and its abrasion and cavitation-erosion behaviour”, Wear, 208, 125-131, 1997.
12. C.K.N. Oliveira, C.L. Benassi a, L.C. Casteletti, “Evaluation of hard coatings obtained on AISI D2 steel by thermo-reactive deposition treatment”, Surface & Coatings Technology, 201, 1880–1885, 2006.
13. Bourithis, L. Papadimitriou, G., “Boriding a plain carbon steel with the plasma transferred arc process using boron and chromium diboride powders: microstructure and wear properties”, Materials Letters, 57, 1835– 1839, 2003.
14. Sen, U. Sen, S, Yilmaz, F., “An evaluation of some properties of borides deposited on boronized ductile iron”, Journal of Materials Processing Technology, 148, 1–7, 2004.
15. Yul Lee, Sang Kim, Gwang Seok, Kim, Bum- Suk, “Mechanical properties of duplex layer formed on AISI 403 stainless steel by chromizing and boronizing treatment”, Surface and Coatings Technology, 177–178, 178–184 2004.
16. Çelikyürek, İ. Baksan, B. Gürler R., “Küresel Grafitti Dökme Demirlerin Borlanması”, Uluslararası Bor Sempozyumu, Eskişehir, 231- 235, 23-25 Eylül 2004.
17. Sen, U. Sen,S. Yilmaz, F., “Effect of copper on boride layer of boronized ductile cast irons”, Vacuum, 72, 199–204, 2004.
18. Sen, U, Sen, S., “The fracture toughness of borides formed on boronized cold work tool steels”, Materials Characterization, 50, 261–26, 2003.
19. Şenel L., Çetin M., Gül, F., “Farklı Matriks Mikroyapılarına Sahip Kgdd’in Kuru Kayma Aşınmasının Değerlendirilmesi”, 3rd Internatıonal Advanced Technologıes Symposıum, Ankara, 154-166, 18-20 August 2003.
20. Abedi, H. R. Fareghi, A. H. Kheirandish, Saghafian, SH., “Sliding wear behavior of a ferritic–pearlitic ductile cast iron with different nodule count”, Wear, Article in Press.