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Amorphous metallic glass has excellent mechanical, physical, chemical and mechanical properties, and is an important development direction and research hotspot of metal composite reinforcements. As a stable, simple, efficient and scalable technology, mechanical alloying provides an effective way to prepare amorphous metal glass. In this work, titanium-based amorphous metallic glass was used to the research object, and the mechanical alloying method was used to achieve efficient and controllable preparation of amorphous powders. The micro-morphology of sample surface was analyzed with the help of scanning electron microscope, amorphous phase structures were characterized by X-ray diffraction, and mechanical properties were measured by micro hardness tester. The results show that the prepared metal powders were relatively uniform and had good amorphous structure characteristics. The hardness test shows that as prepared amorphous metal powder hadan improved hardness of 6 615 Mpa, which could be used as an important part in reinforcing materials. [ABSTRACT FROM AUTHOR]

Ti-based alloys are widely used in medical applications. When implant devices are used to reconstruct disordered bone, prevent bone resorption and enhance good bone remodeling, the Young's modulus of implants should be close to that of the bone. To satisfy this requirement, many titanium alloys with different biocompatible elements (Zr, Ta, Mo, Si etc.) interact well with adjacent bone tissues, promoting an adequate osseointegration. Four new different alloys were obtained and investigated regarding their microstructure, mechanical, chemical and biological behavior (in vitro and in vivo evaluation), as follows: Ti20Mo7Zr15Ta, Ti20Mo7Zr15Ta0.5Si, Ti20Mo7Zr15Ta0.75Si and Ti20Mo7Zr15TaSi. 60 days after implantation, both in control and experimental rabbits, at the level of implantation gap and into the periimplant area were found the mesenchymal stem cells which differentiate into osteoblasts, then osteocytes and osteoclasts which are involved in the new bone synthesis and remodeling, the periimplant fibrous capsule being continued by newly spongy bone tissue, showing a good osseointegration of alloys. A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay confirmed the in vitro cytocompatibility of the prepared alloys. [ABSTRACT FROM AUTHOR]