Посмотр Ústav materiálových věd a inženýrství по дате публикации
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Sintering Densification Curve - a Practical Approach For Its Construction From Dilatometric Shrinkage Data
(International Institute for the Science of Sintering, 2008-01-01)This article summarizes the usage of high-temperature dilatometry in ceramic processing and powder technology with special attention on the description of the sintering process. A practical method for transformation of ... -
Master Sintering Curve - A Practical Approach to its Construction
(International Institute for the Science of Sintering, 2010-04-01)A practical method for the construction of MSC is presented in the paper. With the help of a few dilatometric sintering experiments the newly developed software calculates MSC and finds the optimal activation energy of a ... -
Role of In-flight Temperature and Velocity of Powder Particles on Plasma Sprayed Hydroxyapatite Coating Characteristics
(Elsevier, 2012-01-15)This paper presents a systematic research on the process of thermal spraying of HA encompassing all stages of layer deposition: powder production and characterization (optimized production led to spherical 29.29 - 50.51 ... -
Master Sintering Surface – A Practical Approach to Its Construction and Utilization for Spark Plasma Sintering Prediction
(International Institute for the Science of Sintering, 2012-08-01)The sintering is a complex thermally activated process, thus any prediction of sintering behaviour is very welcome not only for industrial purposes. Presented paper shows the possibility of densification prediction based ... -
Influence of plasma and cold spray deposited Ti Layers on high-cycle fatigue properties of Ti6Al4V substrates
(Elsevier, 2013-02-25)This paper presents a summary of the research on the influence of plasma and cold spray deposition of bio-grade Ti powder on the high-cycle fatigue properties of Ti6Al4V substrates. Four sets of flat specimens (as-received, ... -
In-Flight Temperature And Velocity of Powder Particles of Plasma Sprayed TiO2
(Springer, 2013-10-25)This paper relates to the in-flight temperature and velocity of TiO2 particles, an integral part of the systematic research on atmospheric plasma spraying of the material. Initial powder feedstock (32-45 um, 100% rutile ... -
Influence of plasma electrolytic oxidation on fatigue performance of AZ61 magnesium alloy
(Elsevier, 2014-05-01)The effect of plasma electrolytic oxidation (PEO) on the fatigue of AZ61 magnesium alloy has been investigated under high cycle conditions in air and 3.5% NaCl solution. PEOemployed an alkaline pyrophosphate-silicate-fluoride ... -
Monotonic and cyclic properties of TiAl alloys Monotic and cyclic properties of TiAl alloys doped with Nb, Mo and C
(Elsevier, 2014-06-25)Six grades of TiAl alloys doped with 7 at.% Nb and variable content of C and/or Mo were studied. The as-received microstructure and phase composition of the alloys was characterized using neutron diffraction experiments ... -
Analysis of cyclic plastic response of heat resistant sanicro 25 steel at ambient and elevated temperatures
(Elsevier, 2014-06-25)Austenitic heat resistant steel Sanicro 25 developed for high temperature applications in power generation industry has been subjected to selected low cycle fatigue tests at ambient and at elevated temperature. Saturated ... -
Modification of Plasma Sprayed TiO2 Coatings Characteristics via Controlling the In-flight Temperature and Velocity of the Powder Particles
(Springer, 2014-08-27)The study presents a comprehensive research on the plasma spray fabrication of TiO2 coatings with microstructural properties adjustable via controlling the respective in-flight properties of the feedstock particles. The ... -
Non-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphate
(Royal Society of Chemistry, 2015-01-01)The first synthesis of mesoporous nanocrystalline silicon orthophosphate Si5P6O25 is presented. The synthetic procedure is based on the non-hydrolytic sol-gel reaction in the presence of Pluronic P123 template and subsequent ... -
Influence of Cold-Sprayed, Warm-Sprayed and Plasma Sprayed Layers Deposition on Fatigue Properties of Steel Specimens
(Springer, 2015-03-10)Titanium powder was deposited onto steel specimens using four thermal spray technologies: plasma spray, low-pressure cold spray, portable cold spray, and warm spray. The specimens were then subjected to strain controlled ... -
Oxidation Performance of Cold Spray Ti-Al Barrier Coated gamma-TiAl Intermetallic Substrates
(Elsevier, 2015-04-04)Four blends of Al powder containing different amounts of Ti were deposited onto Ti-46Al-7Nb substrates as oxidation-protection layers using low-pressure cold spray. The coating morphology and chemical composition were ... -
Evaluation of Sintering Behavior of Premix Al-Zn-Mg-Cu Alloy Powder
(Hindawi, 2015-05-09)Sintering of light aluminium alloys powder has been investigated as a way to substitute steels in automotive and aerospace industries. Premix Al-5.5Zn-2.5Mg-0.5Cu composite powder called Alumix 431D was analyzed in this ... -
Effect of SiC particles on sinterability of Al-Zn-Mg-Cu P/M alloy
(Institute of Metallurgy and Materials Science of Polish Academy of Sciences, Commitee on Metallurgy of Polish Academy of Sciences, 2015-05-10)Premix Al-5.5Zn-2.5Mg-0.5Cu alloy powder was analyzed as matrix in this research. Gas atomized powder Al-9Si with 20% volume fraction of SiC particles was used as reinforcement and added into the alloy with varied ... -
Ab initio study of properties of Co- and Cu- doped Ni-Mn-Ga alloys
(Elsevier Ltd., 2015-11-06)The influence of Co and Cu doping on Ni-Mn-Ga alloy is investigated using the first-principles exact muffin-tin orbital method in combination with the coherent-potential approximation. The energy difference between the ... -
Ab initio study of Ni2MnGa under shear deformation
(EDP Sciences, 2015-12-07)The effect of shear deformation on Ni2MnGa magnetic shape memory alloy has been investigated using ab initio electronic structure calculations. We used the projector-augmented wave method for the calculations of total ... -
Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam
(Elsevier, 2016-05-06)In the present work two techniques are combined to optimize bond coat properties before thermal barrier coating (TBC) application, the cold gas dynamic spraying (CGDS) and electron beam remelting (EB). Results of the work ... -
Stage I fatigue cracking in MAR-M 247 superalloy at elevated temperatures
(Elsevier, 2016-07-21)Nickel base superalloys exhibit fatigue fracture behavior with features of brittle-like cleavage cracking under high cycle fatigue loading at temperatures up to approximately 800 °C. This specific fracture behavior was ... -
Influence of Processing Techniques on Microstructure and Mechanical Properties of a Biodegradable Mg-3Zn-2Ca Alloy
(MDPI, 2016-10-28)New Mg-3Zn-2Ca magnesium alloy was prepared using different processing techniques: gravity casting as well as squeeze casting in liquid and semisolid states. Materials were further thermally treated; thermal treatment of ...