کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1658460 1517672 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two-phase single layer Al-O-N nanocomposite films with enhanced resistance to cracking
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Two-phase single layer Al-O-N nanocomposite films with enhanced resistance to cracking
چکیده انگلیسی

The article reports on dc pulsed reactive sputtering of two-phase single layer Al-O-N nanocomposite films using dual magnetron in a mixture of N2 + O2 with pulsed inlet of oxygen. Two kinds of nanocomposite films were sputtered: (1) nc-AlN/a-(Al-O-N) film and (2) nc-(γ-Al2O3)/a-(Al-O-N) nanocomposite film; here nc- and a- denotes the nanocrystalline and amorphous phase, respectively. The transition from the nc-AlN/a-(Al-O-N) nanocomposite to the nc-(γ-Al2O3)/a-(Al-O-N) nanocomposite was controlled by the length of the period of oxygen pulses TO2. It was found that both nanocomposites are highly elastic films with relatively high hardness H = 15 to 20 GPa, low effective Young's modulus E⁎ satisfying the condition that the ratio H/E⁎ > 0.1, high elastic recovery We > 60% and high resistance to cracking in bending. Correlations between the film structure and its mechanical properties are discussed in detail.


► Nanocomposite films composed of nitride and oxide phase.
► Formation of nanocomposite films by reactive sputtering with pulse injection of oxygen.
► Hard films composed of nanograins embedded in amorphous matrix.
► Hard films with enhanced toughness and enhanced resistance to cracking.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 206, Issues 19–20, 25 May 2012, Pages 4230–4234
نویسندگان
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