Regensburg 2007 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 9: Hard Coatings II
DS 9.6: Vortrag
Montag, 26. März 2007, 16:30–16:45, H34
Synthesis of MAX Functional Coatings by PLD — •Peter Schaaf1, Christian Lange1, Salvatore Cusenza1, and Michel Barsoum2 — 1Universität Göttingen, II.Physikalisches Institut, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany — 2Drexel University, Department of Materials Science and Engineering, Philadelphia, PA, USA
MAX phases - short for Mn+1AXn - constitute an exciting new class of materials. The prototype of this material class, Ti3SiC2, was first discovered and characterized in 1967 [1], but only in 1996 it was discovered that this material is stiff, lightweight, machinable, made from relatively inexpensive raw materials, resistant to oxidation and thermal shock, and capable of remaining strong up to temperatures in excess of 1300∘C in air [2,3]. Since then, many MAX phases have been synthesized and characterized and first industrial applications occur [3]. Nevertheless, the potential of this material as a protective coating is not yet exploited. We report on experiments on the deposition of MAX coatings by PLD. The films were deposited at increasing substrate temperatures and subsequently analyzed by a variety of methods. Results on MAX coatings in the Ti-Si-C and the Ti-Al-N regime are reported.
[1] W Jeitschko and H Nowotny. 1967. Monatschrift für Chemie 98:329-337.
[2] MW Barsoum and T El-Raghy. 1996. Journal of the American Ceramic Society 79:1953-1956.
[3] MW Barsoum and T El-Raghy, American Scientist 89, 334 (2001).