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Length and thickness dependence of longitudinal flexural resonance frequency shifts of a piezoelectric microcantilever sensor due to Young's modulus change J. Appl. Phys.Hardness and Young's modulus of high-quality cubic boron nitride films grown by chemical vapor deposition J. Appl. Phys. 93, 1515 (2003); 10.1063/1.1534625Intrinsic stress in chemical vapor deposited diamond films: An analytical model for the plastic deformation of the Si substrate Temperature dependent measurements of Young's modulus were performed for the first time on black and transparent bulk material of chemical vapor deposited ͑CVD͒ diamond by a dynamic three point bending method in a temperature range from Ϫ150 to 850°C. The CVD specimens correspond to a room-temperature Young's modulus of single crystal diamond ͑1143 GPa͒. A lower Young's modulus of polycrystalline diamond is caused by crystal imperfections and impurities. At temperatures between Ϫ150 and 600°C ͑black type͒ or Ϫ150 and 700°C ͑transparent type͒ the Young's modulus is only slightly temperature dependent and decreases monotonically with an average temperature coefficient of Ϫ1.027ϫ10 Ϫ4 K Ϫ1 , which is much higher than theoretically expected. At higher temperatures the bending stiffness and apparent Young's modulus of the diamond beams are drastically reduced to one third of the initial value before fracture occurs due to oxygen etching effects in air. The onset temperature of this degradation phenomenon and the rate of decline are dependent on grain size, texture and the crystal lattice imperfections of the CVD diamond material.

graphite, and amorphous carbon was investigated. Vit 1 samples were melted and subsequently solidified after different processing times on discs of the different materials. Sessile drop examinations of the macroscopic wetting of Vit 1 on the discs as a function of temperature were carried out in situ with a digital optical camera. The reactions at the interfaces between the Vit 1 sample and the different disc materials were investigated with an electron microprobe. The structure and thermal stability of the processed Vit 1 samples were examined by x-ray diffraction and differential scanning calorimetry. The results are discussed in terms of possible applications for composite materials.