Mirosław M. Bućko
Bio: Mirosław M. Bućko is an academic researcher from AGH University of Science and Technology. The author has contributed to research in topics: Sintering & Cubic zirconia. The author has an hindex of 22, co-authored 153 publications receiving 1746 citations.
Papers published on a yearly basis
TL;DR: In this article, natural origin hydroxyapatite (HAp) was extracted from animal bones by their treatment with hot NaOH solution and carbonate groups and small amounts of magnesium were found, usually not present in the synthetic HAp.
Abstract: Natural origin hydroxyapatite (HAp) was extracted from animal bones by their treatment with hot NaOH solution. The remaining organic material oxidized in air atmosphere at moderate temperatures. In the material of this kind carbonate groups and small amounts of magnesium were found, usually not present in the synthetic HAp. Ca/P ratio in pig cortical bones was higher than that in the stoichiometric (synthetic) material. Fraction of carbonate groups decreased with temperature and CaO appeared at higher temperatures, but structure of hydroxyapatite became preserved even at 1000 °C, the highest temperature applied in this investigation. At temperatures >700 °C crystallite growth became intensive, specific surface area of the powder decreased and compacts of such powder started to shrink. Biological test showed that CAL-72 (human osteosarcoma) cells growth depended on heat treatment temperature of the natural HAp substrate.
TL;DR: In this paper, the physicochemical properties of the synthesized apatites were analyzed using various analytical methods, such as X-ray diffraction (XRD), infrared spectroscopy (FTIR), and high-resolution solid-state nuclear magnetic resonance (SSNMR).
TL;DR: In this article, FTIR, Raman spectroscopy, XRD, SEM and EDS techniques were used to determine thermal stability, chemical and phase composition of Mn containing hydroxyapatite (MnHA).
TL;DR: In this paper, it was found that crystallizing in water led to nanometric in size and isometric in shape crystallites, whereas crystallization in sodium hydroxide solution results in particles of well defined walls.
Abstract: NiFe 2 O 4 powders were synthesized by co-precipitation with ammonia solution using aqueous solution of NiCl 2 and FeCl 3 followed by hydrothermal treatment of the precipitate. It was found that crystallization in water led to nanometric in size and isometric in shape crystallites, whereas crystallization in sodium hydroxide solution results in particles of well defined walls. Generally, particles crystallized in water were smaller and their particle size distribution was narrower than those crystallized in NaOH solution. Behaviour of the powders under dry compaction and sintering strongly depended on the powder morphology. The powder crystallized in NaOH solution gave compacts of higher density and sintered density of this powder was also higher than that of the powder processed in water.
TL;DR: In this article, the authors measured the electrical conductivity of calcium zirconate dense samples using both dc four-probe and ac impedance spectroscopy methods and found that the maximum conductivity values were observed for the sample with x � / 0.06.
TL;DR: In this paper, the performance characteristics of transition metal oxides based on the α-NaFeO 2, spinel and olivine structures have been compared and approaches for improving their performances have been proposed.
TL;DR: This article is focused on nanosized HAp, although recent articles on microsized particles, especially those assembled from nanoparticles and/or nanocrystals, have been reviewed for comparison.
TL;DR: In this paper, the authors reviewed the current understanding of the electrical properties of the grain boundaries of acceptor-doped zirconia and ceria, with an emphasis on the grain-boundary defect structure.
TL;DR: In this paper, a review summarizes recent and very recent work on preparing substituted hydroxyapatites for a wide range of biomedical applications, including repairing and replacing diseased and damaged parts of musculoskeletal systems and also as a drug or gene delivery agent, as a bioactive coating on metallic osseous implants, biomagnetic particles and fluorescent markers.
TL;DR: Graphene is a relatively new and promising material, displaying a unique array of physical and chemical properties as mentioned in this paper, but it has only recently been implemented as an electron conducting additive for lithium ion battery cathode materials.