Effect of the Processing Parameters on the Porosity and Mechanical Behavior of Titanium Samples with Bimodal Microstructure Produced via Hot Pressing.

Commercially pure (c.p.) titanium grade IV with a bimodal microstructure is a promising material for biomedical implants.

A Novel, Simple and Highly Efficient Route to Obtain PrBaMnO Double Perovskite: Mechanochemical Synthesis.

In this work, a mechanochemical route was proposed for the synthesis of the PrBaMnO (PMBO) double layered perovskite phase. The mechanochemical reaction between PrO, BaO, and MnO powders with cationic stoichiometric ratios of 1/1/2 for Pr/Ba/Mn was performed using high-energy milling conditions in air. After 150 min of milling, a new phase with perovskite structure and cubic symmetry consistent with the A-site disordered PrBaMnO phase was formed.

Development by Mechanochemistry of LaSrGaMgO Electrolyte for SOFCs.

In this work, a mechanochemical process using high-energy milling conditions was employed to synthesize LaSrGaMgO (LSGM) powders from the corresponding stoichiometric amounts of LaO, SrO, GaO, and MgO in a short time. After 60 min of milling, the desired final product was obtained without the need for any subsequent annealing treatment. A half solid oxide fuel cell (SOFC) was then developed using LSGM as an electrolyte and LaSrMnO (LSM) as an electrode, both obtained by mechanochemistry.

Tailoring the Band Gap in the ZnS/ZnSe System: Solid Solutions by a Mechanically Induced Self-Sustaining Reaction.

The complete ZnS Se solid solution was successfully obtained by the mechanochemical process denoted as a mechanically induced self-sustaining reaction. Excellent control of the chemical stoichiometry of the solid solution was possible by adjusting the atomic ratio of the starting Zn/S/Se elemental mixture subjected to milling. A mixture of both wurtzite-2H (hexagonal) and zinc blende (cubic) structures was always obtained, although for a similar milling time the proportion of the zinc blende structure increased with the Se content in the solid solution.

Hallmarks of mechanochemistry: from nanoparticles to technology.

The aim of this review article on recent developments of mechanochemistry (nowadays established as a part of chemistry) is to provide a comprehensive overview of advances achieved in the field of atomistic processes, phase transformations, simple and multicomponent nanosystems and peculiarities of mechanochemical reactions. Industrial aspects with successful penetration into fields like materials engineering, heterogeneous catalysis and extractive metallurgy are also reviewed. The hallmarks of mechanochemistry include influencing reactivity of solids by the presence of solid-state defects, interphases and relaxation phenomena, enabling processes to take place under non-equilibrium conditions, creating a well-crystallized core of nanoparticles with disordered near-surface shell regions and performing simple dry time-convenient one-step syntheses.