固体火箭技术期刊是ei

Accession number: 20090711906825Title: Synthesis of Ni, Ni-P and Ni-B nanoparticles and their catalytic effect on the thermal decomposition of ammonium perchlorateAuthors: Li, Rong1 ; Liu, Xiang-Xuan1 ; Huang, Yong-Cheng1 ; Wang, Xuan-Jun1Author affiliation: 1 Xi'an Research Inst. of High-Technology Hongqing Town, Xi'an 710025, ChinaCorresponding author: Li, R.Source title: Guti Huojian Jishu/Journal of Solid Rocket TechnologyAbbreviated source title: Guti Houjian JishuVolume: 31Issue: 6Issue date: December 2008Publication year: 2008Pages: 607-611Language: ChineseISSN: 10062793Document type: Journal article (JA)Publisher: Journal of Solid Rocket Technology, P.O. Box 120, Xi'an, 710025, ChinaAbstract: Crystalline Ni, amorphous Ni-P and Ni-B nanoparticles with high purity were prepared by using a modified electro-less plating method. The resulting samples were characterized by transmission electron microscope (TEM), X-ray diffraction (XRD) and the catalytic effect of the prepared nanoparticles on the decomposition of ammonium perchlorate was investigated using TG-DTA. The results indicate that Ni nanoparticles are in spherical shape with average size of about 60 nm in cubic crystal structure; Ni-P and Ni-B nanoparticles are an aggregation of ultrafine alloy particles with relatively wide size distribution of 10-80 nm and 30-50 nm respectively in amorphous structure. Ni, Ni-P and Ni-B nanoparticles have significant catalytic effect on thermal decomposition of AP, the effects are more apparent on the stage of high-temperature decomposition, and Ni-B nanoparticles have the greastest influence on the high-temperature decomposition of AP among the resulting nanoparticles. Compared with pure AP, adding Ni or Ni-P nanoparticles (5%) in AP resulted in a decrease of peak temperature of high-temperature decomposition of about 53°C or 80°C; however adding Ni-B nanoparticles (5%) in AP resulted in more significant reduction of peak temperature of high-temperature decomposition from 457.37°C to 321.68°C i.e. about 125°C and disappearance of the peak of high temperature decomposition, which leads that the whole thermal decomposition stage shows one single exothermic peak at 321.68°C and ends at 368.33°C.Number of references: 11Main heading: NickelControlled terms: Agglomeration - Alloys - Ammonium compounds - Amorphous alloys - Crystal structure - Decomposition - Electroless plating - Nanoparticles - Photoresists - Pyrolysis - Spacecraft propulsion - Thermogravimetric analysis - Transmission electron microscopy - X ray analysisUncontrolled terms: Ammonium perchlorate - Amorphous alloy - Catalytict - Electroless plating method - Ni nanoparticlesClassification code: 745.1 Printing - 761 Nanotechnology - 801 Chemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 813.2 Coating Materials - 933 Solid State Physics - 933.1.1 Crystal Lattice - 933.2 Amorphous Solids - 951 Materials Science - 741.3 Optical Devices and Systems - 421 Strength of Building Materials; Mechanical Properties - 531 Metallurgy and Metallography - 531.1 Metallurgy - 531.2 Metallography - 539.3.2 Electroless Plating - 548.1 Nickel - 654 Rockets and Rocket Propulsion - 655.1 Spacecraft, General - 656.1 Space Flight - 708 Electric and Magnetic Materials - 712.2 Thermionic Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/OpticsDatabase: Compendex

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