Characterization of vacuum plasma spray VPS - W coating deposited on stainless steel substrates

Darko Veljić; Časlav Lačnjevac; Marko Rakin

doi:10.5937/zasmat2102106M

Autori

Darko Veljić University of Belgrade, Faculty of Technology and Metallurgy, Innovation Center, Serbia Autor
Časlav Lačnjevac University of Belgrade, Faculty of Agriculture, Serbia Autor
Marko Rakin University of Belgrade, Faculty of Technology and Metallurgy, Serbia Autor

DOI:

https://doi.org/10.5937/zasmat2102106M

Ključne reči:

volfram, vakuum plazma sprej (VPS), mikrostruktura, interfejs, mikrotvrdoća, čvrstoća spoja

Apstrakt

U ovom radu proučavano je topljenje čestica praha W u plazmi, njihovo ponašanje na oksidaciju kao i mehanizam očvršćavanja na površini substrata. Slojevi volfram prevlake su deponovani sa vakuum plazma sprej tehnologijom (VPS) na ispitnim uzorcima od čelika Č.4171 (X15Cr13 EN10027). VPS tehnologija ima prednosti u odnosu na APS tehnologiju zbog smanjene oksidacije istopljenih čestica praha, proizvodeći prevlaku sa kontrolisanim udelom mikro pora i većom uniformnosti deponovanih slojeva. Procena mehaničkih karakteristika slojeva je urađena ispitivanjem mikrotvrdoće metodom HV0.3 i zatezne čvrstoće spoja ispitivanjem na zatezanje. Analizirane su mikrostrukture deponovanih slojeva pomoću optičke mikroskopije (OM) i skening elektronske mikroskopije (SEM). Dobijeni rezultati su pokazali da se volfram prevlaka sastojala od dobro istopljenih čestica međusobno povezanih i preklopljenih, koja pokazuje tipičnu lamelarnu mikrostrukturu. U mikrostrukturi su prisutne mikro pore u veoma malom udelu koje se nalaze na među-lamelarnim granicama. Ispitivanja su pokazala da slojevi W prevlake deponovani plazma sprejom u zaštritnoj atmosferi inertnog gasa na niskom pritisku imaju dobre mehaničke osobine i mikrostrukturu, koje u potpunosti omogućavaju njenu primenu u eksploataciji.

Reference

(2002) Turbojet engine: Standard practices manual PN 582005. East Hartford, USA: Pratt & Whitney

Boire-Lavigne, S., Moreau, C., Saint-Jacques, R.G. (1993) Taguchi analysis of the influence of plasma spray parameters on the microstructure of tungsten coatings. in: International Symposium on Developments and Applications of Ceramics and New Metal Alloys, Quebec City, 473-485

Bolt, H., Barabash, V., Krauss, W., Linke, J., Neu, R., Suzuki, S., Yoshida, N., Asdex, U.T. (2004) Materials for the plasma-facing components of fusion reactors.Journal of Nuclear Materials, 329-333: 66-73

https://doi.org/10.1016/j.jnucmat.2004.04.005

Cai, W., Liu, H., Sickinger, A., Muehlberger, E., Bailey, D., Lavernia, E.J. (1994) Low-pressure plasma deposition of tungsten.Journal of Thermal Spray Technology, 3(2): 135-141

https://doi.org/10.1007/BF02648270

Cavasin, A., Brzezinski, T., Grenier, S., Smagorinski, M., Tsantrizos, P. (1998) W and B4 C coatings for nuclear fusion reactors. in: International Thermal Spray Conference, Nice, France: ASM International

https://doi.org/10.31399/asm.cp.itsc1998p0957

Chong, F.L., Chen, J.L., Li, J.G., Hu, D.Y., Zheng, X.B. (2008) Heat load behaviors of plasma sprayed tungsten coatings on copper alloys with different compliant layers.Journal of Nuclear Materials, 375(2): 213-217

https://doi.org/10.1016/j.jnucmat.2007.11.008

Fortuna, E., Rubel, M.J., Psoda, M., Andrzejczuk, M., Kurzydowski, K.J., Miskiewicz, M., Philipps, V., Pospieszczyk, A., Sergienko, G., Spychalski, M., Zielinski, W. (2007) Plasma-induced damage of tungsten coatings on graphite limiters.Physica Scripta, T128: 162-165

https://doi.org/10.1088/0031-8949/2007/T128/031

Hu, D., Zheng, X., Niu, Y., Ji, H., Chong, F., Chen, J. (2008) Effect of oxidation behavior on the mechanical and thermal properties of plasma sprayed tungsten coatings.Journal of Thermal Spray Technology, 17(3): 377-384

https://doi.org/10.1007/s11666-008-9190-4

Jiang, X.L., Boulos, M.I. (2001) Particle melting, flattening, and stacking behaviors in the induction plasma deposition of tungsten.Transactions of Nonferrous Metals Society of Chinam, 11(5): 811-816

Kang, H.K. (2004) Thermal properties of plasma-sprayed tungsten deposits.Journal of Nuclear Materials, 335(1): 1-4

https://doi.org/10.1016/j.jnucmat.2004.06.001

Malléner, W., Hohenauer, W., Stöver, D. (1996) Tungsten coatings for nuclear fusion devices. in: 9th National Thermal Spray Conference. Cincinnatti, proceedings, Cincinnatti, p.1-6

https://doi.org/10.31399/asm.cp.itsc1996p0001

Mrdak, M.R., Vencl, A., Nedeljković, B.D., Stanković, M. (2013) Influence of plasma spraying parameters on properties of thermal barrier coatings.Materials Science and Technology, 29(5): 559-567

https://doi.org/10.1179/1743284712Y.0000000193

Mrdak, M., Lačnjevac, Č., Rakin, M. (2018) Mechanical and structural features of Nb coating layers deposited on steel substrates in a vacuum chamber.Zaštita materijala, vol. 59, br. 2, str. 167-172

https://doi.org/10.5937/ZasMat1802167M

Mrdak, M., Lačnjevac, Č., Rakin, M., Bajić, N. (2018) Characterization of tantalum coatings deposited using vacuum plasma spray process.Zaštita materijala, vol. 59, br. 4, str. 489-494

https://doi.org/10.5937/zasmat1804489M

Mrdak, M., Lačnjevac, Č., Rakin, M., Bajić, N., Veljić, D. (2019) Karakterizacija plazma sprej bioinertne prevlake Al2O328tež.%MgO.Zaštita materijala, vol. 60, br. 1, str. 44-49

https://doi.org/10.5937/zasmat1901044M

Niu, Y., Zheng, X., Ji, H., Qi, L., Ding, C., Chen, J., Luo, G. (2010) Microstructure and thermal property of tungsten coatings prepared by vacuum plasma spraying technology.Fusion Engineering and Design, 85(7-9): 1521-1526

https://doi.org/10.1016/j.fusengdes.2010.04.032

Pintsuk, G., Brünings, S.E., Döring, J.-.E., Linke, J., Smid, I., Xue, L. (2003) Development of W/Cu-functionally graded materials.Fusion Engineering and Design, 66-68: 237-240

https://doi.org/10.1016/S0920-3796(03)00220-5

Raman, R., Thomas, J.C., Hwang, D.Q., Conway, G.D., Martin, F., Hirose, A., Gierszewski, P., Décoste, R. (1993) Design of the compact toroid fueler for center fueling tokamak de varennes.Fusion Technology, 24(3): 239-250

https://doi.org/10.13182/FST93-A30198

Salhi, Z., Klein, D., Gougeon, P., Coddet, C. (2005) Development of coating by thermal plasma spraying under very low-pressure condition <1mbar.Vacuum, 77(2): 145-150

https://doi.org/10.1016/j.vacuum.2004.08.013

Stolarski, T.A., Tobe, S. (2001) The effect of spraying distance on wear resistance of molybdenum coatings.Wear, 249(12): 1096-1102

https://doi.org/10.1016/S0043-1648(01)00842-0

Tokunaga, K., Yoshida, N., Noda, N., Kubota, Y., Inagaki, S., Sakamoto, R., Sogabe, T., Plöchl, L. (1999) Behavior of plasma-sprayed tungsten coatings on CFC and graphite under high heat load.Journal of Nuclear Materials, 266-269: 1224-1229

https://doi.org/10.1016/S0022-3115(98)00689-8

Tran, A.T.T., Hyland, M.M., Shinoda, K., Sampath, S.S. (2011) Influence of substrate surface conditions on the deposition and spreading of molten droplets.Thin Solid Films, 519(8): 2445-2456

https://doi.org/10.1016/j.tsf.2010.11.047

Warren, A., Nylund, A., Olefjord, I. (1996) Oxidation of tungsten and tungsten carbide in dry and humid atmospheres.International Journal of Refractory Metals and Hard Materials, 14(5-6): 345-353

https://doi.org/10.1016/S0263-4368(96)00027-3