Search results

1

Antimony Influence on Shape of Eutectic Silicium in Al-Si Based Alloys

100%

Bolibruchová D., Brůna M.

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issue 4

2

Development of a Manufacturing Technology of Compacted Graphite Iron Castings from a Cupola Furnace

100%

Bouska O., Heunisch J., Zadera A., Nedelova K., Kobersky F.

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issue 1

3

Study of the anatase to rutile transformation kinetics of the modified TiO2

88%

Grzmil B., Gleń M., Kic B., Lubkowski K.

Polish Journal of Chemical Technology

|

2013

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vol. 15

|

issue 2

73-80

EN

TiO2 attracts much interest because of its many potential applications. The use of titanium dioxide strongly depends on its polymorphic form: brookite, anatase, or rutile. Only rutile and anatase play an important role in industry. Anatase as a metastable form undergoes a non-reversible transformation into rutile. Understanding the kinetics of phase transformation and the processes of crystal growth of a material is essential for controlling its structure and, thus, its specific properties. The main purpose of this paper is to explain the anatase to rutile recrystallization kinetics in the modified TiO2 calcined from industrial hydrated titanium dioxide. The apparent activation energy of anatase to rutile transformation and the average size of titanium dioxide crystallites were determined for the unmodified TiO2 and TiO2 modified with P, K, Al, B, Zn, Zr, Ce, Sn, or Sb introduced in the amount of 0.5 mol% and 1.0 mol% when recalculated for their oxides. The growth of TiO2 crystallites during calcination was strongly inhibited by P, Ce and Zr, and inhibited to a lesser degree by Al, Sn and Sb. B and Zn did not affect the investigated process and K accelerated crystallites growth. The values of apparent activation energy depending on a modifier formed a relationship: Al

4

Modification of a recuperator construction with CFD methods

88%

Ludwig W., Zając D.

Chemical and Process Engineering

|

2017

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vol. 38

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issue 4

5

Using Deep Etching in the Study of Eutectic Silicon 3D-Morphology in AlSi7MgTi Cast Alloy

88%

Kuchariková L., Tillová E., Bonek M. S., Chalupová M.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 4

6

Experimental investigations of dynamic sorption of diesel from contaminated water

75%

Paliulis D., Paliulis D.

Archives of Environmental Protection

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2021

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vol. 47

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issue 4

7

The Effect of Temperature on the Result of Complex Modification of IN-713C Superalloy Castings

75%

Findziński R., Gradoń P., Binczyk F., Mańka M.

Archives of Foundry Engineering

|

2015

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issue 4

8

The Althoff-Radtke Test Adapted for High Chromium Cast Iron

75%

Kopyciński D., Siekaniec D., Szczęsny A., Sokolnicki M., Nowak A.

Archives of Foundry Engineering

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2016

|

issue 4

9

Influence of Rare Earth Metals on Microstructure and Mechanical Properties of G20Mn5 Cast Steel

75%

Kasińska J.

Archives of Foundry Engineering

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2018

|

issue 3

10

CHITOSAN MICROSPHERES PREPARED BY MEMBRANE EMULSIFICATION FOR CHROMIUM REMOVAL FROM AQUEOUS SOLUTIONS

75%

Wolska J.

Progress on Chemistry and Application of Chitin and its Derivatives

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2016

|

vol. 21

203-216

EN

Chitosan is naturally abundant biopolymer that could be used as chelating sorbent for removal of metal ions from aqueous solutions. In this study the uniform-sized chitosan microspheres and their modified derivatives were prepared by using the one stage membrane emulsification process. The obtained sorbents were used for removal of chromium VI ions. The sorption evaluation was carried out at different initial ion concentrations and allowed to fit the experimental data to Langmuir isotherm in the case of unmodified materials and to Freundlich isotherm in the case of modified microspheres. The highest sorption towards chromium has been shown by unmodified chitosan with medium molecular weight. The calculated maximum sorption capacity for this polymer was found to be 1.6 mmol/g.

11

Study of the BA1044 Alloy Properties and Their Interpretation with the Use of Fuzzy Logic

75%

Kluska-Nawarecka S., Wilk-Kołodziejczyk D., Górny Z., Saja K.

Archives of Foundry Engineering

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2013

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issue 2

12

Effects of Cr - Ni 18/9 Austenitic Cast Steel Modification by Mischmetal

75%

Kasińska J., Gajewski M.

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issue 4

13

Modified and Unmodified Zinc Oxide as Coagent in Elastomer Compounds

75%

Kołodziejczak-Radzimska A., Jesionowski T., Maciejewska M., Zaborski M.

Polish Journal of Chemical Technology

|

2014

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vol. 16

|

issue 3

63-68

EN

The aim of this work was to study the activity of unmodified and modified ZnO in the peroxide crosslinking of hydrogenated acrylonitrile-butadiene elastomer (HNBR) and ethylene-propylene copolymer (EPM). In the first step, zinc oxide was obtained by emulsion precipitation. Maleic acid was introduced onto the surface of ZnO using an in situ method. The unmodified and modified zinc oxide was characterized using dispersive and morphological analysis, BET surface area analysis, and elemental, spectroscopic and thermal analysis. In the second stage of the research, the ZnO/MA systems were incorporated into the structure of elastomer compounds improving the kinetic and mechanical properties of vulcanizates. The proposed modification method had a favorable effect on the physicochemical properties of the zinc oxide and on the kinetic and mechanical properties of the vulcanizates. This study demonstrated that modification of zinc oxide by maleic acid is a promising technique.

14

The Influence of Material of Mould and Modification on the Structure of Alsi11 Alloy

75%

Konopka Z., Łągiewka M.

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issue 1

15

Mechanical Properties And Creep Resistance Of Nickel Alloys After Complex Modification And Double Filtration

75%

Gradoń P., Binczyk F., Mańka M.

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issue 2

16

The Influence of Remelting on the Properties of AlSi6Cu4 Alloy Modified by Antimony

75%

Medlen D., Bolibruchová D.

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issue 1

17

Analysis of Solidification Parameters and Macrostructure of IN-713C Castings after Complex Modification

63%

Gradoń P., Binczyk F.

Archives of Foundry Engineering

|

2013

|

issue 3

18

Studies on the microstructure of epoxy-cement composites

63%

Łukowski P., Łukowski P.

Archives of Civil Engineering

|

2016

|

issue 2

Refine search results

Antimony Influence on Shape of Eutectic Silicium in Al-Si Based Alloys

Development of a Manufacturing Technology of Compacted Graphite Iron Castings from a Cupola Furnace

Study of the anatase to rutile transformation kinetics of the modified TiO2

Modification of a recuperator construction with CFD methods

Using Deep Etching in the Study of Eutectic Silicon 3D-Morphology in AlSi7MgTi Cast Alloy

Experimental investigations of dynamic sorption of diesel from contaminated water

The Effect of Temperature on the Result of Complex Modification of IN-713C Superalloy Castings

The Althoff-Radtke Test Adapted for High Chromium Cast Iron

Influence of Rare Earth Metals on Microstructure and Mechanical Properties of G20Mn5 Cast Steel

CHITOSAN MICROSPHERES PREPARED BY MEMBRANE EMULSIFICATION FOR CHROMIUM REMOVAL FROM AQUEOUS SOLUTIONS

Study of the BA1044 Alloy Properties and Their Interpretation with the Use of Fuzzy Logic

Effects of Cr - Ni 18/9 Austenitic Cast Steel Modification by Mischmetal

Modified and Unmodified Zinc Oxide as Coagent in Elastomer Compounds

The Influence of Material of Mould and Modification on the Structure of Alsi11 Alloy

Mechanical Properties And Creep Resistance Of Nickel Alloys After Complex Modification And Double Filtration

The Influence of Remelting on the Properties of AlSi6Cu4 Alloy Modified by Antimony

Analysis of Solidification Parameters and Macrostructure of IN-713C Castings after Complex Modification

Studies on the microstructure of epoxy-cement composites