Effect of gas corrosion on the character of phase boundaries in Ni3Al / WC composite

• Autorzy: Fraś E. , Janas A. , Kolbus A. , Olejnik E.
• Języki publikacji: EN

Abstrakty

EN

In view of quite specific physico-chemical and performance properties, the composite based on an intermetallic Ni3Al compound reinforced with tungsten carbides (WC) was selected for investigations. The said composite is characterised by very good mechanical and tribological properties within a wide range of temperatures, combined with good corrosion resistance. In fabrication of the Ni3Al/WC composite, a modified variant of the SHS process was applied. It is the SHSB process, i.e. the Self-Propagating High-Temperature Synthesis in Bath. The said method enables obtaining pure products of reaction, unoxidised and free from the precipitates of alien phases. The main goal of this study has been determination of the susceptibility of the Ni3Al/WC composite to gas corrosion. To examine the microstructure and chemical composition of both the composite and the scale, the metallographic and structural examinations were made, using optical and scanning microscopy.

Słowa kluczowe

EN

composite in situ; phase Ni3A; SHSB process; carbide of WC; gas corrosion

PL

kompozyt in situ; metoda SHSB; węglik; korozja gazowa

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 2
• Strony: 87--92
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Fraś E.

autor

Janas A.

autor

Kolbus A.

autor

Olejnik E.

• Chair of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, ul Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

• [1] Janas A.: Doctor's Thesis, AGH, Kraków 1998 (in Polish).
• [2] Janas A.: The fundamentals of Al + TiC composite fabrication and evaluation of its selected mechanical properties, Kraków 1998, KBN Research Project 7TO 8 D 004 09 (in Polish).
• [3] Ashby M. F., Jones D. R. H.: Engineering Materials, Wydawnictwo Naukowo - Techniczne, Warszawa, 1993 (in Polish).
• [4] Gósta Wranglęn.: The fundamentals of corrosion and protection of metals, Wydawnictwo Naukowo - Techniczne, Warszawa 1985 (in Polish).
• [5] Baszkiewicz J., Kamiński M.: Corrosion of Materials, Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa 2006 (in Polish).
• [6] Blicharski M.: Introduction to Materials Engineering, Wydawnictwo Naukowo - Techniczne, Warszawa 2003, (in Polish).
• [7] Dusza J., Parilak L., Slesar M.: Fracture characteristics of ceramic and cermet cutting tools, Ceram. Int., 1987, vol. 13, pp. 133.
• [8] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Matrix- particle Interphase boundaries of the selected in situ and ex situ Composites MMCs ,Archives of Foundry, 2006, 6, 18, 297-304 (in Polish).
• [9] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Cast Ni3Al /MeC(Me-W,Zr) composites in situ, Archives of Foundry,2006, 6, 18, 317-324 (in Polish).