Thermodynamics of Crystallizing Low-Alloy Boron Steel Melt Components Interaction

2016 ◽  
Vol 843 ◽  
pp. 178-182
Author(s):  
N.M. Tanklevskaya ◽  
A.N. Maznichevsky
Keyword(s):  
Boron Nitride ◽  
Liquid Metal ◽  
Phase Equilibria ◽  
Nitrogen Content ◽  
Boron Steel ◽  
Carbon And Nitrogen ◽  
Titanium Nickel ◽  
Excess Phases ◽  
Liquid Metal Solution ◽  
Manganese Chromium

Thermodynamic analysis of the phase equilibria in the Fe–Mn–Cr–Si–Al–Ti– Ni–V–Mo–B–S–P–C–N–O system at fixed concentrations of boron, manganese, chromium, silicon, aluminum, titanium, nickel, vanadium, molybdenum, sulfur, phosphorus, carbon and nitrogen was performed. Formation of nonmetallic phases upon cooling and crystallization of liquid metal solutions of various compositions was studied. It was established how aluminum and nitrogen content in the liquid metal solution affects the composition and amount of separated excess phases. Calculations demonstrated that boron nitride was not formed in the liquid metal and during crystallization.

The Interactions of Carbon and Nitrogen in Liquid Silicon

2014 ◽  
Vol 33 (4) ◽  
pp. 363-368 ◽  
Author(s):  
Halvor Dalaker ◽  
Merete Tangstad
Keyword(s):  
Silicon Nitride ◽  
Carbon Source ◽  
Nitrogen Content ◽  
High Purity ◽  
Liquid Silicon ◽  
Interaction Parameters ◽  
Carbon And Nitrogen ◽  
Temperature Range ◽  
High Purity Silicon

AbstractThe interactions between carbon and nitrogen in liquid silicon have been studied experimentally. High purity silicon was melted in silicon nitride crucibles under an Ar atmosphere with a graphite slab inserted in the crucible prior to melting as a carbon source. The system was thus simultaneously equilibrated with Si3N4 and SiC. Samples were extracted in the temperature range 1695–1798 K and analyzed using Leco.It was observed that the simultaneous saturation of nitrogen and carbon caused a significant increase in the solubilities of both elements. The interaction parameters were derived as The solubility of carbon in liquid silicon as a function of temperature and nitrogen content was found to follow: And the solubility of nitrogen in liquid silicon found to follow:

scholarly journals Role of carbon and nitrogen in the improvement of corrosion resistance of new powder metallurgy Co-Cr-Mo alloys

2020 ◽  
Vol 38 (3) ◽  
pp. 273-286 ◽  
Author(s):  
Cristina Garcia-Cabezon ◽  
Celia Garcia-Hernandez ◽  
Maria L. Rodriguez-Mendez ◽  
Gemma Herranz ◽  
Fernando Martin-Pedrosa
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Powder Metallurgy ◽  
Nitrogen Content ◽  
Powder Metallurgy Technique ◽  
Carbon And Nitrogen ◽  
Physiological Conditions ◽  
Carbon And Nitrogen Content ◽  
Astm F75

AbstractMicrostructural changes that result in relevant improvements in mechanical properties and electrochemical behavior can be induced using different sintering conditions of ASTM F75 cobalt alloys during their processing using powder metallurgy technique. It has been observed that the increase in carbon and nitrogen content improves corrosion resistance and mechanical properties as long as the precipitation of carbides and nitrides is avoided, thanks to the use of rapid cooling in water after the sintering stage. In addition, the reduction of the particle size of the powder improves hardness and resistance to corrosion in both acid medium with chlorides and phosphate-buffered medium that simulates the physiological conditions for its use as a biomaterial. These results lead to increased knowledge of the role of carbon and nitrogen content in the behavior displayed by the different alloys studied.

scholarly journals Liquid Metal Embrittlement of Hot Stamped Galvannealed Boron Steel Sheet – Effect of Heating Time on Crack Formation –

2017 ◽  
Vol 57 (6) ◽  
pp. 1094-1101 ◽  
Author(s):  
Masaru Takahashi ◽  
Masahiro Nakata ◽  
Kazuhito Imai ◽  
Nobusato Kojima ◽  
Nobuo Otsuka
Keyword(s):  
Liquid Metal ◽  
Steel Sheet ◽  
Crack Formation ◽  
Heating Time ◽  
Liquid Metal Embrittlement ◽  
Boron Steel

Carbon and Nitrogen Scope for Growth as A Function of Diet in the Sea Scallop Placopecten Magellanicus

1991 ◽  
Vol 71 (2) ◽  
pp. 437-450 ◽  
Author(s):  
Jonathan Grant ◽  
Peter J. Cranford
Keyword(s):  
Nitrogen Content ◽  
Clearance Rate ◽  
Absorption Efficiency ◽  
Placopecten Magellanicus ◽  
Scope For Growth ◽  
Carbon And Nitrogen ◽  
Tissue Weight ◽  
Sea Scallop ◽  
Feeding Experiments ◽  
Carbon And Nitrogen Content

Laboratory feeding experiments with the sea scallop Placopecten magellanicus were carried out to compare scope for growth (SFG) to measured growth and determine the effect of diet on carbon and nitrogen SFG. Diets consisting of cultured phytoplankton, kelp detritus, and resuspended sediment were provided daily for 52 days (October-December). Measurements of clearance rate, absorption efficiency, respiration, O/N ratio, and carbon and nitrogen content of diets and scallop tissue were used to construct carbon and nitrogenbudgets for each diet. Growth coefficients were calculated from change in tissue weight during the study period.

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