نتایج جستجو برای: high energy ball milling

تعداد نتایج: 2593801  

2012
Zongqing Ma Yongchang Liu Liming Yu Qi Cai

The ball milling technique has been successfully applied to the synthesis of various materials such as equilibrium intermetallic phases, amorphous compounds, nanocrystalline materials, or metastable crystalline phases. However, how the phase composition and nanoscale microstructure evolute during ball milling in various materials is still controversial due to the complex mechanism of ball milli...

2016
Yong Luo Guang Ran Nanjun Chen Qiang Shen Yaoli Zhang

The microstructural evolution, thermodynamics, and kinetics of Mo (21 wt %) Tm₂O₃ powder mixtures during ball milling were investigated using X-ray diffraction and transmission electron microscopy. Ball milling induced Tm₂O₃ to be decomposed and then dissolved into Mo crystal. After 96 h of ball milling, Tm₂O₃ was dissolved completely and the supersaturated nanocrystalline solid solution of Mo ...

Journal: :فرآیندهای نوین در مهندسی مواد 0
علی اصغر بیک زاده دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی واحد نجف آباد سید علی حسن زاده تبریزی استادیار مهندسی مواد / دانشگاه آزاد اسلامی واحد نجف آباد

in this article vanadium boride nanopowder was synthesized by mechanochemical reduction method in a high-energy ball mill. the synthesized powders were studied by x-ray diffraction (xrd), scanning electron microscopy (sem), xray map and transmission electron microscopy (tem). according to x-ray diffraction the product predominantly consists of vb phases after 100 min milling without further hea...

2012
Thakur Prasad Yadav Ram Manohar Yadav Dinesh Pratap Singh

Synthesis of nanomaterials by a simple, low cost and in high yield has been a great challenge since the very early development of nanoscience. Various bottom and top down approaches have been developed so far, for the commercial production of nanomaterials. Among all top down approaches, high energy ball milling, has been widely exploited for the synthesis of various nanomaterials, nanograins, ...

A. Saidi, A. Shafyei and N. J. Welham, N. Setoudeh,

Anatase-to-rutile phase transformation was studied in milled and unmilled samples. Ball milling was carried out in two types of ball mills, planetary and tumbler, with a ball-to-powder ratio of 40:1 over 2-48 hours. First, the unmilled samples were heated in the furnace at various temperatures for different periods of time. The results revealed that the anatase-to-rutile transformation comple...

Introduction: Biologists have increasingly used zinc oxide (ZnO) nanoparticles in regard with biological applications. The present study aimed to assess feasibility of ZnO nanoparticles synthesis by high-energy milling as well as to investigate their antimicrobial effect. Methods: The high-energy ball milling technique was used to produce ZnO nanoparticles from micron-scale ZnO particles. The...

Ebrahim Karamian Majid Karimian, Mehrdad Soltani,

Magnesium is potentially useful for orthopedic and cardiovascular applications. Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it with ceramic...

Ebrahim Karamian Majid Karimian, Mehrdad Soltani,

Magnesium is potentially useful for orthopedic and cardiovascular applications. Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it with ceramic...

A. Saidi, A. Shafyei and N. J. Welham, N. Setoudeh,

Anatase-to-rutile phase transformation was studied in milled and unmilled samples. Ball milling was carried out in two types of ball mills, planetary and tumbler, with a ball-to-powder ratio of 40:1 over 2-48 hours. First, the unmilled samples &#10were heated in the furnace at various temperatures for different periods of time. The results revealed that the anatase-to-rutile transformation comp...

A Saidi A.R Shirani M.H Shirani

Mechanical alloying is a powder metallurgy processing technique involving cold welding, fracturing, and rewelding of powder particles in a high-energy ball mill. In this work, NiFe-TiC composite powders were prepared by mechanical alloying process using planetary high-energy ball mill. The effect of TiC addition by weight percent on the NiFe solid solution formation, grain size, lattice paramet...

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