nitrogen atmosphere
2.The fractions and the residue obtained by supercritical isobutane extraction from a Saudi Arabian FCC DO were firstly heat treated under autogenously pressurized atmosphere at 420℃ or under normal nitrogen atmosphere at 350℃,respectively.
3.Hydrogen bonding configurations, Si/N and Si dangling bond densities in PECVD Si3N4 films have been measured as the function of the processing conditions and annealing temperatures in nitrogen atmosphere with IR, RBS and ESR.
4.The ?χ (3) ? for the sample dried at room temperature is 5.8×10 -13 esu, and for the sample heated at 150℃ for 2 h in a nitrogen atmosphere is 3.7×10 -12 esu.
5.The viscosity of fluoroaluminate melts is measured as a function of temperature in a nitrogen atmosphere from 700-1000℃ by rotating method. The effect of Ba(PO_2)_2 and YF_2 on the viscosity of fluoroaluminate melts is studied.
6.The results showed that the initial thermal degradation temperatures of SIS,SBS and SI/BS at nitrogen atmosphere were 499.8,630.2 and 582.9 K respectively indicating that the thermal stability of SBS was better than those of SIS and SI/BS;
7.The graft copolymerization(CAM)of acrylamide(AM) over chitosan(CTS) was investigated in nitrogen atmosphere by using ceric ammonium nitrate as an initiator. The mass ratio of chitosan and acrylamide was controlled at 1∶6,the reaction time was 3 h at 50 ℃,the concentration of initiator was 0.8 mmol/L.
8.The law on component change of carbocoal from different temperature pyrolysis of Yanzhou bituminous coal in ordinary pressure fluidized bed in nitrogen atmosphere is analyzed, especial change law of sulfur, and activation energy of pyrolysis carbocoal in different temperature is analyzed in thermogravimetric analyzer, It is found that activation decreases with pyrolysis temperature increasing.
9.In order to research the reduction characteristics of chromium oxide present in stainless steelmaking dust and the parameters of its reduction process, pure Cr_2O_3 powder was mixed to make the pellets with carbon, CaO and iron powders, and the influence of reduction temperature, carbon content and the diameter of pellets on the recovery of metal value and whole thermal reduction process was investigated using an electric furnace in nitrogen atmosphere.
10.Nitrogen-Based Atmosphere Heat Treatment for Ball Bearing Sheath
