21 Result(s)

Article

Beneficiation of rock phosphate fertilisers by mechano-milling

Mechano-milling is a process where materials are ball-milled at high energy to induce chemical and physical reactions. This study investigated the effect of milling on the properties and agronomic effectivenes...

H.H. Lim, R.J. Gilkes, P.G. McCormick in Nutrient Cycling in Agroecosystems (2003)

Article

Mechanochemical Synthesis and Characterization of GaN Nanocrystals

A solid-state displacement reaction of Ga₂O₃ with Mg₃N₂ has been used to synthesize GaN nanocrystals by mechanochemical processing. X-ray diffraction, transmission electron microscopy (TEM) and selected area elec...

S. Cai, T. Tsuzuki, T.A. Fisher, B.D. Nener, J.M. Dell… in Journal of Nanoparticle Research (2002)

Article

Investigation of a synthetic aluminosilicate inorganic polymer

A melt-quenched of mixture of alumina and silica (46 wt% Al₂O₃ or Al₂O₃(SiO₂)₂) was found to react with an alkaline silicate solution (Na₂O)(SiO₂)_1.2(H₂O)_9.5) at low-temperatures to form a synthetic aluminosilica...

J. P. Hos, P. G. Mccormick, L. T. Byrne in Journal of Materials Science (2002)

Article

The ferromagnetic transition in MnAs synthesised by mechanical alloying and powder blending techniques

A study of the structure and properties of MnAs synthesized by mechanical alloying and powder blending techniques has been carried out. Mechanical alloying resulted in the formation of MnAs during milling. Fol...

V. A. Chernenko, L. Wee, P. G. McCormick, R. Street in Journal of Materials Science (2000)

Article

Magnetization Reversal in Melt-Ouenched NdFeB

Melt-quenched NdFeB is an important modem permanent magnet material. However there still remains doubt as to the magnetization reversal mechanism which controls coercivity in material prepared by this processi...

D. C. Crew, L. H. Lewis, P. G. Mccormick, R. Street… in MRS Online Proceedings Library (1999)

Article

Microstructural evolution of Ni-NaCl mixtures during mechanochemical reaction and mechanical milling

The evolution of microstructure of Ni and NaCl mixtures formed by mechanochemical reaction and mechanical milling has been studied using X-ray diffraction, electron microscopy and magnetic measurements. Separa...

J. Ding, T. Tsuzuki, P. G. McCormick in Journal of Materials Science (1999)

Article

The fundamentals of mechanochemical processing

It has been demonstrated that the activation of chemical reactions by mechanical energy can lead to many interesting applications, ranging from waste processing to the production of advanced materials with nov...

P. G. McCormick, F. H. Froes in JOM (1998)

Article

Mechanically activated reduction of nickel oxide with graphite

The reduction of nickel oxide with graphite during ball milling at both ambient and elevated temperatures was investigated using X-ray diffraction (XRD), simultaneous thermogravimetry and differential thermal ...

H. Yang, P. G. McCormick in Metallurgical and Materials Transactions B (1998)

Article

Synthesis of CdS quantum dots by mechanochemical reaction

+ Na₂S → CdS + 2NaCl induced by mechanical milling resulted in the formation of CdS particles with an average diameter of < 8 nm. The average particle size was controlled within the range of 4 to 8 nm by varying...

T. Tsuzuki, P.G. McCormick in Applied Physics A (1997)

Article

Effect of low temperature ageing on the transformation behaviour of near-equiatomic NiTi

A unique three-stage transformation behaviour on cooling has been observed in a Ti-50.2 at% Ni alloy after a low temperature ageing treatment. The cooling transformation in the aged alloy occurred as a three-s...

Yinong Liu, X Chen, P. G McCormick in Journal of Materials Science (1997)

Article

Synthesis of titanium oxynitride by mechanical milling

The synthesis of a titanium oxynitride phase by mechanically milling elemental titanium powder in air at ambient temperature has been studied. X-ray powder diffraction, transmission electron microscopy and che...

H. Yang, P. G. McCormick in Journal of Materials Science (1993)

Article

Reduction of tantalum chloride by magnesium during reaction milling

H. Yang, P. G. McCormick in Journal of Materials Science Letters (1993)

Article

On the kinetics of mechanical alloying

The kinetics of solid-state displacement reactions during mechanical alloying have been investigated. The effects of charge ratio and ball size on the progress of the reaction between CuO and Fe have been eval...

G. B. Schaffer, P. G. McCormick in Metallurgical Transactions A (1992)

Article

Synthesis of NdFeO₃ by mechanical alloying

T. Alonso, Yinong Liu, P. G. McCormick in Journal of Materials Science Letters (1992)

Article

Anomalous combustion effects during mechanical alloying

Combustion in solid-state displacement reactions during mechanical alloying has been investigated. It was found that mechanical alloying decreases the critical reaction temperature at which unstable combustion...

G. B. Schaffer, P. G. McCormick in Metallurgical Transactions A (1991)

Article

Displacement reactions during mechanical alloying

The occurrence of simple solid-state displacement reactions during mechanical alloying has been investigated. The reduction of cupric oxide to pure copper metal by a variety of metallic reducing agents was stu...

G. B. Schaffer, P. G. McCormick in Metallurgical Transactions A (1990)

Article

Combustion and resultant powder temperatures during mechanical alloying

G. B. Schaffer, P. G. McCormick in Journal of Materials Science Letters (1990)

Article

Hydrostatic extrusion behaviour of high density polyethylene

The solid state processing of a high density polyethylene by hydrostatic extrusion at room temperature has been investigated. The extrusion pressure for a given extrusion ratio is found to depend on the pressu...

R. Gupta, P. G. McCormick in Journal of Materials Science (1980)