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11.436  Articles
1 of 1.145 pages  |  10  records  |  more records»
Tungsten heavy alloys are considered as two phase composites with 88 to 97 wt% tungsten interspersed in a matrix of relatively low melting elements such as nickel, iron and cobalt. The mechanical properties of these alloys are greatly influenced by the mi... see more

Bimodal WC-Co hardmetals were produced using novel technology - reactive sintering. Milled and activated tungsten and graphite powders were mixed with commercial coarse grained WC-Co powder and then sintered. The microstructure of produced materials was f... see more

This study aims to analyze the statistical parameters of bed load grains in Sungai Kakap Waters, Kubu Raya Regency, West Kalimantan Province. Bed load sampling was carried out at seven stations, with five sampling points each. The hydrometer test on the s... see more

The very high concrete strength and durability achieved in high and ultra-high-performance concrete is associated with a very dense matrix, accomplished through the use of high volumes of very fine mineral additions, such as fly ash, silica-fume, metakaol... see more

This study analyzed pollen morphology and characteristics of 20 Sambucus nigra L. genotypes from populations of various ecotypes and geographical localities from the territory of Slovakia. We used principal component analysis to explore variability in pol... see more

The present work significantly improved the mechanical strength of AISI 316L stainless steel by producing nano-sized grains. Steel was subjected to cold rolling followed by repetitive thermal cycling to produce ultra-fine/ nano-sized grains. The optimum p... see more

The formation of high temperature composites in W-C-Bsystem from fine-grained powders in dependence on the ratio of components byusing reactive spark plasma sintering was studied. The mixture of W2Cand C nanoparticles was used as tungsten and carbon precu... see more

Silver is a well-known material in the field of contact materials because of its high electrical and thermal conductivity. However, due to its bad mechanical and switching properties, silver alloys or reinforcements of the ductile silver matrix are requir... see more

A new process squeeze casting-solid extrusion was introduced to prepare semi-solid billets for thixoforging together with partial remelting. The microstructure development and tensile properties of AZ91D alloy reheated from states of as-cast and SCSE-form... see more

1 of 1.145 pages  |  10  records  |  more records»