Št. zadetkov: 11
Izvirni znanstveni članek
Oznake:
covered electrodes;single-bead surface weld;segregation;EDXS analysis;admixing rate;
This article deals with an analysis of mixing and determines the admixing rate of a base S355 steel plate in single-bead surface welds by measuring the chemical composition using a planescan energy dispersive X-ray spectroscopy (EDXS) on metallographic cross-sections. The results show that obtaining ...
Leto:
2022
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Diplomsko delo
Oznake:
jeklo C45;žarjenje;zračna atmosfera;oksidacija;razogljičenje;
Razogljičenje srednjeogljikovega nelegiranega jekla med žarjenjem v zračni atmosferi
Leto:
2016
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Magistrsko delo
Oznake:
podevtektoidna jekla;razogljičenje;oksidacija;žarjenje;dvofazno področje;
Raziskovalo se je razogljičenje svetlo brušene površine nelegiranih podevtektoidnih jekel C22, C45 in C60 pri različno dolgem žarjenju na temperaturah AC1 < Tž < AC3 v zračni atmosferi. Na teh temperaturah je mikrostruktura omenjenih jekel feritno-avstenitna. Raziskan je bil vpliv temperature in čas ...
Leto:
2018
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Doktorska disertacija
Oznake:
novi dodajni materiali na osnovi Fe-P in Mn-Fe-P;spajkanje;karakterizacija lastnosti;mikrostrukturne preiskave;strižni preizkus;
V sklopu raziskave smo razvili, karakterizirali in preizkusili nove dodajne materiale na osnovi Fe-P in Mn-Fe-P za spajkanje nelegiranih in malolegiranih jekel. Ti imajo relativno nizke temperature solidus in likvidus ter ozke talilne intervale in so poceni za izdelavo. Po razmisleku o optimalni ses ...
Leto:
2023
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake:
arc welding;single-bead surface weld;admixing rate;melting efficiency;
The precise determination of the admixing rate of the base material for certain welding parameters is very important because of the possible negative consequences. As such, it is the basis for corrections in welding technology. In the article, experimental and theoretical determinations of the admix ...
Leto:
2019
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake:
styrene-acrylonitrile;geometrical shape;stress concentrator;destructive pressure;fracture toughness;
A destructive pressure test of styrene–acrylonitrile (SAN) water-filter housings showed the influence of the shape and specific details of the housings on their critical areas and their destructive pressure. The destructive pressure varies by as much as 37 bar due to different dominant stresses in t ...
Leto:
2020
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake:
carbon steel;annealing;air;oxidation;decarburization;
The non-alloyed hypo-eutectoid steel C45 was annealed in a steady air atmosphere at T > A$_{C1}$ using three temperature ranges and annealing times t$_a$ = 1/2 , 1 and 2 h. The oxidation and decarburization obeyed the parabolic law of growth with time and increased with higher temperatures and longe ...
Leto:
2018
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake:
iron-phosphorus alloys;low melting temperature;as-cast state;high hardness;
Preliminary study of new low-temperature hard abrasion resistant Fe-P and Fe-P-X (X = C or/and B) casting alloys
Leto:
2023
Vir:
Inštitut za kovinske materiale in tehnologije (IMT)
Izvirni znanstveni članek
Oznake:
bombažna tkanina;titanov dioksid (TiO2);dopiranje s srebrom (Ag);protibakterijska aktivnost;UV zaščita;samo-čistilnost;cotton fabrics;titanium dioxide (TiO2);silver (Ag) doping;antibacterial activity;UV protection;self-cleaning;
In this work, TiO$_2$ was incorporated into the surface of cotton fabrics by an in situ sol–gel/hydrothermal approach. Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride (SiQAC) was added as a bio-barrier Si precursor to enhance the synergistic effect/binding of TiO$_2$ to the surface ...
Leto:
2022
Vir:
Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake:
bombažna tkanina;titanov dioksid;dopiranje s srebrom;3-(trihidroksil)propil metilfosfonat;UV zaščita;protibakterijska aktivnost;ognjevarnost;cotton fabrics;titanium dioxide;silver doping;3-(trihydroxysilyl)propyl methylphosphonate;UV protection;antibacterial activity;flame retardancy;
Herein, we present a novel approach to the development of a multifunctional, UV-protective, photocatalytic, antimicrobial and flame-retardant nanocomposite fabric surface. Using a sol–gel/hydrothermal approach, a phosphorus-based flame-retardant 3-(trihydroxysilyl)propyl methylphosphonate (TPMP) in ...
Leto:
2023
Vir:
Naravoslovnotehniška fakulteta (UL NTF)