کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1504846 1511008 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A functionally graded multilayer approach to the synthesis of boron containing ceramic thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
A functionally graded multilayer approach to the synthesis of boron containing ceramic thin films
چکیده انگلیسی

Despite their excellent properties, adhesion problems are common for B4C and BCN thin films on different substrates when the film thickness exceeds about 500 nm. Three functionally graded multilayer designs; surface boronizing of the steel substrate before deposition (Boride underlayer/B4C), Ti/TiC/B4C and Ti/TiN/BCN structures were discussed in this study, to alleviate the adhesion problems. Cross-sectional FE–SEM examinations and elemental depth profiling by SIMS revealed the graded structure of the films. The elemental film composition measured by EPMA and the mechanical properties determined by nanoindentation demonstrated the graded chemical composition and the transition of the hardness and Young's modulus values between different layers respectively. The results demonstrated the possibility of growing well adherent boron containing ceramic coatings with thicknesses in the μm range by means of different graded underlayer designs.

Figure optionsDownload as PowerPoint slideHighlights
► Boron containing ceramic thin films have superior properties.
► Adhesion problems are common for B4C and BCN thin films.
► FGM designs provide much improved adhesion.
► FGM multilayer design is an appropriate solution for thick boron containing ceramic coatings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 14, Issues 11–12, November 2012, Pages 1717–1721
نویسندگان
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