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Year 2007 No 2

Dubas L., Kulsiriwiwat T., Samneingjam K., Sritaveesinsub V., Wangyao P., Dubas S. T.
FORMATION OF SILVER-NANOPARTICLES COMPOSITE THIN FILMS
Keywords: layer-by-layer|silver|nanoparticles|film|
No 2 (2007), p. 147-155
  mag01.pdf (559 kB)
mag01_eng.txt (1 kB)  

Grosman F., Cyganek Z.
INFLUENCE OF MEFASS ROLLING PARAMETERS ON TEMPERATURE OF FORMED STRIP
Keywords: MEFASS process|rolling|change of the strain path|temperature|
No 2 (2007), p. 156-162
  mag02.pdf (2 MB)
mag02_eng.txt (2 kB)  

Marchewka Ł., Stobrawa J., Cwolek B., Hadasik E., Płachta A.
STUDY OF AN EFFECT OF TEMPERATURE, RATE AND DEGREE OF DEFORMATION ON THE STRUCTURE OF HARDLY DEFORMABLE CuPAg ALLOYS
Keywords: Cu-P alloys|brazing alloys|hardly-deformable alloys|dynamic recrystallisation|superplastic properties|plastometric tests|metallographic examination|
No 2 (2007), p. 163-172
  mag03.pdf (625 kB)
mag03_eng.txt (2 kB)  

Jabłońska M., Niewielski G.
PLASTIC DEFORMATION AND THE EFFECTS OF DYNAMIC RECRYSTALLIZATION IN AN ALLOY IN THE MATRIX OF ORDERED SOLID SOLUTION
Keywords: intermetallic alloys|dynamic recrystalization|hot compression tests|
No 2 (2007), p. 173-178
  mag04.pdf (2 MB)
mag04_eng.txt (1 kB)  

Niżnik B., Pietrzyk M.
RHEOLOGICAL MODEL FOR MICROALLOYED STEEL IN THE TWO-PHASE REGION OF TEMPERATURES, ACCOUNTING FOR THE INFLUENCE OF DEFORMATION AND PRECIPITATION ON THE
Keywords: niobium microalloyed steels|carbonitride precipitation process|dislocation density model|
No 2 (2007), p. 179-189
  mag05.pdf (1 MB)
mag05_eng.txt (2 kB)  

Horkavcová D., Rohanová D., Horváthová R.
PREPARATION OF CALCIUM PHOSPHATE COATING ON TITANIUM AND TITANIUM ALLOY AND STUDY OF ITS ADHESION TO SUBSTRATE
Abstract
Titanium and titanium alloys (especially Ti-6Al-4V) have been used for many years in medical practice thanks their mechanical and chemical properties. Their main advantages are biocompatibility, good resistance to corrosion and strength. But without any surface treatment (blasting, coating) titanium and its alloy do not form the strong bond with bone. The inert implant surface is bioactive only in case of its chemical treatment. Our previous study showed that titanium and titanium alloys form a calcium phosphate layer on its surface in supersaturated calcification solution (SCS2) when it was subjected to concentrated chloride acid and 10 mol.dm-3 NaOH treatments to form titanate hydrogel contained Na+ ions. Presence of this layer gives bioactive properties to titanium and its alloys. A uniform calcium phosphate (Ca-P) coating approximately 10 - 20 ?m thick was found on the substrates after 72 hours immersion. This layer can improve the bone – bonding interaction. The adhesion strength of the calcium phosphate layer to titanium and titanium alloy substrates was determined by tape test (ASTM D 3359), modified knife test (ASTM 6677-1) and modified pull test (STN EN 582). Calcium phosphate coatings were observed by scanning electron microscopy (SEM/EDS) and optical microscopy (OM). The coatings had a very good adhesion to titanium and titanium alloy substrate.

Keywords: titanium|titanium alloy|calcification|calcium phosphate layer|adhesion|tape and knife test|
No 2 (2007), p. 190-197
  mag06.pdf (2 MB)
mag06_eng.txt (1 kB)  

Petrík J., Javorčíková Z..
THE CAPABILITY OF HARDNESS MEASUREMENT PROCESS OF SUPERDURALUMINIUM
Keywords: capability|superduraluminium|Brinell hardness|
No 2 (2007), p. 198-207
  mag07.pdf (555 kB)
mag07_eng.txt (5 kB)  

Demeter J., Kijac J., Velgos J.
EVOLUTION OF THICKNESS OF REMAINING MgO-C REFRACTORY LINING IN BOF DURING CAMPAIGN
Keywords: magnesium-carbon refractory lining|basic oxygen furnace|skulls|gunning mixes|trunnions area|slag line area|
No 2 (2007), p. 208-213
  mag08.pdf (246 kB)
mag08_eng.txt (1 kB)  

Hyrcza-Michalska M., Lisok J., Sikorski Sz.
THE ANALYSIS OF PLASTIC FLOW OF LASER WELDED TUBES IN THE PROCESS OF HYDROMECHANICAL FORMING
Keywords: laser welded blanks|tubular welded blanks|formability|hydroforming|hydromechanical forming|hydro-bulging|strain analysis|
No 2 (2007), p. 214-220
  mag09.pdf (1 MB)
mag09_eng.txt (2 kB)  

Tkocz M., Kusiak J., Grosman F.
RECOMMENDATIONS FOR SELECTION OF PARAMETERS OF COGGING IN V-DIES
Keywords: open-die forging|cogging|drawing out|V-dies|state of stress|
No 2 (2007), p. 221-228
  mag10.pdf (1 MB)
mag10_eng.txt (2 kB)  

Szkliniarz W.
EFFECT OF INITIAL MICROSTRUCTURE ON Ti-48Al-2Cr-2Nb ALLOY PLASTICITY
Keywords: TiAl-intermetallic phase based alloys, heat treatment, deformation, compression test, microstructure
No 2 (2007), p. 229-235
  mag11.pdf (516 kB)
mag11_eng.txt (2 kB)  

Špánik J., Krochmal K.
PARAMETERS OF HOT EXTRUSION PRESSING OF ALPHA BRASS
Keywords: hot extrusion pressing|alpha brass|surface cracks|brass CuZn30|deformation rate|extrusion ratio|extrusion speed|
No 2 (2007), p. 236-243
  mag12.pdf (367 kB)
mag12_eng.txt (2 kB)  

Wangyao P., Polsilapa S., Sopon P., Panich N., Chuankrerkkul N.
RE-HEAT TREATMENTED MICROSTRUCTURES AND GAMMA PRIME PARTICLE COARSENING BEHAVIOR AT 1000˚C OF CAST NICKEL BASE SUPERALLOY, IN-738
Keywords: rejuvenation|re-heat treatment|microstructural repair|gamma prime particle coarsening|nickel base superalloy|
No 2 (2007), p. 244-252
  mag13.pdf (842 kB)
mag13_eng.txt (2 kB)  

Valíček J., Hloch S., Ohlídal M.
SURFACE MICROTOPOGRAPHY OPTICAL DETECTION CREATED AT ABRASIVE WATERJET MACHINING
Keywords: abrasive waterjet|shadow method|cutting mechanism|
No 2 (2007), p. 253-261
  mag14.pdf (642 kB)
mag14_eng.txt (1 kB)  

Boryca J.
THE EFFECT OF LOSS OF STEEL AND THICKNESS OF SCALE LAYER ON THE SCALE ADHESION FOR CONSTANT VALUE EXCESS COMBUSTION RATIO
Keywords: scale|scale adhesion|loss of steel for scale|heating charge|heating technology|
No 2 (2007), p. 262-268
  mag15.pdf (300 kB)
mag15_eng.txt (757 B)  

Vadász P., Rabatin Ľ.
THE CORROSION OF BASIC CARBON REFRACTORY MATERIALS BY OXIDIZING SLAG
Keywords: refractory material|carbon|slag|corrosion tests|
No 2 (2007), p. 269-275
  mag16.pdf (475 kB)
mag16_eng.txt (1 kB)  

Rákoš J.
SUBATOMIC NANO-LAYER OF STANNUM DIOXIDE AS A MASER PART OF SOLAR RADIATION
Keywords: Subatomary stannumdioxide layer|nanomaser|spectral gravitation prism. PACS: 02.70.Ns|34.50.Ez|42.50.Gy|61.46.Hk|78.20.Ek|
No 2 (2007), p. 276-285
  mag17.pdf (1 MB)
mag17_eng.txt (955 B)