ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Compound ceramic coatings were prepared on Ti-6Al-4V allosy by pulsed bi-polarMicro-plasma Oxidation (MPO) in NaAlO2(S1) and Na2SiO3(S2) solution respectively. The coatedsamples were calcined in argon under 1000 oC. The phase composition,morphology and elementcontent of the ceramic coatings were investigated by XRD, SEM and XRF. After oxidation in argon,The Al2TiO5 of S1 coating surface was decomposed into Al2O3. SiO2 was crystalized in S2 coatingwith the final proportion of SiO2 to TiO2 on the coating surface is 81:18. The morphology of theceramic coatings after the calcination was also different. S1 coatings calcined in argon were fine,grains and pores were smaller and were combined tightly with the substrate, on the contrary, S2coatings calcined in argon cracked on the coating surface and were separated with the substrate. Thecontent of elements in the coatings both changed a little, which may be due to the reaction of thesubstrate in the oxidation. According to the phase composition and the morphology of the coatings,S1 coatings are better than S2 coatings
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.1717.pdf
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