| PECVD OF HARD AND ELASTIC BCN COATINGS |
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| 作者姓名： | R.Cremer D.Kurapov C.Martinez O.Kyrylov D.Neuschütz |
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| 作者单位： | R. Cremer，D. Kurapov，C. Martinez，O. Kyrylov and D. NeuschutzLehrstuhl fiir Theoretische Hiittenkunde，RWTH Aachen，D-52056 Aachen，Germany |
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| 基金项目： | The financial support from the Deutsche Forschungsgemeinschaft under contract NE 351/29-1 is gratefully acknowledged. In addition, the authors would like to thank Achim Etzkorn and the Lehr-und Forschungsgebiet Werkstoffwissenschaften for the nanoindenta |
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| 摘 要： | Compounds of the B-C-N system are very promising to produce superhard coatings with good tribological, chemical and thermal properties. Consequently, BCN films were prepared by plasma enhanced chemical vapor deposition (PECVD). The films were deposited from gaseous mixtures of BCl3-C2H4-N2-H2-Ar in different unipolar and bipolar pulsed glow discharges at 550℃ and analyzed with respect to composition, electronic structure and mechanical properties. The micro structure and composition of the BCN films were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and reflection electron energy loss spectroscopy (REELS). Mechanical properties were characterized using both the traditional Vickers method and nanoindentation. The films, that were deposited using a bipolar pulsed generator, were weak and had a sponge-like structure, whereas the films prepared using an unipolar generator were well adherent, had a hardness of more than 11GPa and very high e
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| 收稿时间： | 2001-07-31 |
PECVD OF HARD AND ELASTIC BCN COATINGS |
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| R.Cremer,D.Kurapov,C.Martinez,O.Kyrylov,D.Neuschütz.PECVD OF HARD AND ELASTIC BCN COATINGS[J].Acta Metallurgica Sinica(English Letters),2002,15(1):15-20. |
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| Authors: | RCremer DKurapov CMartinez OKyrylov DNeuschütz |
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| Affiliation: | Lehrstuhl fur Theoretische Huttenkunde, RWTH Aachen, D-52056 Aachen, Germany |
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| Abstract: | Compounds of the B-C-N system are very promising to produce superhard coatings with good tribological, chemical and thermal properties. Consequently, BCN films were prepared by plasma enhanced chemical vapor deposition (PECVD). The films were deposited from gaseous mixtures of BCl3-C2H4-N2-H2-Ar in different unipolar and bipolar pulsed glow discharges at 550G and analyzed with respect to composition, electronic structure and mechanical properties. The microstructure and composition of the BCN films were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and reflection electron en- ergy loss spectroscopy (REELS). Mechanical properties were characterized using both the traditional Vickers method and nanoindentation. The films, that were deposited using a bipolar pulsed generator, were weak and had a sponge-like structure, whereas the films prepared using an unipolar generator were well adherent, had a hardness of more than 11GPa and very high elastic recoveries of up to 80%. The elasticity properties supposedly result from the formation of a fullerene-like structure. |
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| Keywords: | boron carbonitride PECVD XPS X-ray diffraction crostructure |
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