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Keywords: projektno učno delo, obdarovanje, božič, ročno delo, materiali, tehnologija izdelave izdelokov, učenci
Published in RUP: 10.07.2015; Views: 3182; Downloads: 122
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Keywords: projektno učno delo, podaljšano bivanje, umetne mase, perlice, izdelava izdelkov, tehnologija izdelave, uporaba
Published in RUP: 10.07.2015; Views: 4530; Downloads: 129
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Keywords: projektno učno delo, tehniški dnevi, šivanje, tekstil, ustvarjalnost, izdelovanje izdelkov iz tekstila
Published in RUP: 10.07.2015; Views: 2935; Downloads: 65
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Keywords: projektno učno delo, odpadni materiali, papirna embalaža, lesena embalaža, kovinska embalaža, steklena
Published in RUP: 15.10.2013; Views: 4531; Downloads: 165
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Abstract: 330a The aim of this work was to analyse the mechanisms of hindered internal passivation of silver based alloys which was obtained by the modification of basic chemical composition. A generalisation of the phenomenon, experimental verification and the estimated range of micro-element concentration is also introduced. The ability for inoculation of a particular alloy is determined by the differences between the formation energies of oxides, as well as their crystallographic similarity. Therefore, for the investigated Ag-Zn alloys, Mg was selected as the micro-alloying element. The influence of 0.001 up to 0.5 mass % of Mg added to the selected alloys was analysed. By changing the chemical composition,internal passivation was hindered, internal oxidation rate was increased, and considerably greater (redoubled) depths of internal oxidation were achieved.
Keywords: shape memory alloys, martensite trnsformation
Published in RUP: 15.10.2013; Views: 5054; Downloads: 78
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