Preparation and characterization of Yb2O3–Al2O3 glasses by the Pechini sol–gel method combined with flame synthesis

Preparation of Ce-doped (Y,Gd)3Al5O12 nanoceramics by sintering and crystallization of glass microspheres

“…The crystalline microsphere has a rough surface and composed of several micrometer-scale grains. The presence of crystalline microspheres has also been reported by others in the flame-sprayed amorphous samples [22,23]. The deviation in composition from the desired eutectic values is considered to be the main cause for the formation of crystalline microspheres [24].…”

Crystallization kinetics of binary Yb2O3–Al2O3 glass

“…Commercially available powders of ytterbium oxide (Yb 2 O 3 , 99.9% purity, Treibacher Industry, Austria) and aluminum nitrate (Al(NO 3 ) 3 , 99.9% purity, Sigma-Aldrich, Germany) were used as the raw materials for synthesizing Yb 3 Al 5 O 12 powders via modified Pechini sol-gel method [31] as described in our previous work [10]. Aluminum nitrate was dissolved in deionized water and mixed with ytterbium nitrate solution prepared by dissolution of the oxide in diluted nitric acid.…”

“…These properties predetermine Yb-doped materials for "ultrafast" laser applications [9]. However, doping with Yb 3+ is connected with several problems, especially with strong influence of host matrix on final spectral properties [10,11]. A few different Yb-doped systems (up 100%) in monocrystalline, polycrystalline or glassy form were prepared to this time by several method as Czochralski method, micro-pulling-down technique, solid-state reaction [1], sol-gel method [12] or co-precipitation [13][14][15].…”

“…HT XRD, DSC and DTA methods are well known and very often used for glass crystallization study [17][18][19][20][21][22][23][24][25] and for study of thermal behavior of many kinds of materials. HT XRD analysis was successfully used for study of phase development in many systems [5,22,23,[26][27][28][29][30] and for determination of conversion rate dependence on temperature in yttrium-aluminate glasses and lanthanum-aluminate glasses [5,10,28,29]. Also, the JMAK model is very frequently used to better describe a changes in materials during crystallization [5,[28][29][30].…”

Passive filler loaded polysilazane‐derived glass/ceramic coating system applied to AISI 441 stainless steel, part 1: Processing and characterization

“…Flame synthesis is relatively common for the synthesis of ceramic powders and nanopowders and is being increasingly utilized for the preparation of glass microspheres. This method has been demonstrated before by preparing glasses in the Al 2 O 3 –RE 2 O 3 , Al 2 O 3 –RE 2 O 3 –ZrO 2 , and Al 2 O 3 –RE 2 O 3 –SiO 2 systems, with RE = (Y, Yb, La) . The composition of the prepared glasses can be adjusted to achieve maximum chemical compatibility with the PDC.…”