Fabrication of porous pure magnesium by MgH<sub>2</sub> produced by mechanical milling and spark plasma sintering (MM-SPS) process
نویسندگان
چکیده
Pure magnesium (Mg) powders with stearic acid added as process control agent (PCA) were mechanically milled (MMed) using a vibration ball mill. The MMed consolidated into bulk materials by the spark plasma sintering (SPS). Changes in hardness, thickness and solid-state reactions of SPS have been examined hardness measurements, vernier caliper an X-ray diffraction (XRD), respectively. Vickers material decreased increasing temperature. Minimum value was 17 HV. increased However, little effect time on observed. In materials, formation MgH2 solid phase reaction observed during sintering. During sintering, decomposed to produce hydrogen gas; it contributed expand materials. Porous pure could be formed only MM-SPS without addition foaming aid.
منابع مشابه
Fabrication of Nanostructured Cu matrix Nanocomposites by High Energy Mechanical Milling and Spark Plasma Sintering
Spark plasma sintering (SPS) is a sintering process that is capable of sintering hard worked powders in short times. This technique was used to fabricate bulk Cu and Cu-SiC nanocomposites. Pure Cu and mixed powders of Cu including 4 vol% of SiC nanoparticles were mechanically alloyed for 25 h and sintered at 750˚C under vacuum condition by SPS method. Microstructures of the materials were chara...
متن کاملIn-situ Fabrication of Transparent Magnesium Aluminate Spinel by Spark Plasma Sintering
Transparent polycrystalline spinel ceramic was fabricated without any sintering aids by spark plasma sintering method of a mixture of Al2O3 and MgO powders for only 10min soak at 1250°C. Densification, microstructure and optical transparency of spinel were examined. The spinel exhibits an in-line transmission of 55% for a visible-wavelength of 470nm and high hardness value of 2040 HV.
متن کاملCharacterization of In-Situ Cu–TiH2–C and Cu–Ti–C Nanocomposites Produced by Mechanical Milling and Spark Plasma Sintering
This study focuses on the fabrication and microstructural investigation of Cu–TiH2–C and Cu–Ti–C nanocomposites with different volume fractions (10% and 20%) of TiC. Two mixtures of powders were ball milled for 10 h, consequently consolidated by spark plasma sintering (SPS) at 900 and 1000 ◦C producing bulk materials with relative densities of 95–97%. The evolution process of TiC formation duri...
متن کاملEffect of Nano-TiN on Mechanical Behavior of Si3N4 Based Nanocomposites by Spark Plasma Sintering (SPS)
متن کامل
Spark Plasma Synthesis (SPS) Device for Sintering of Nanomaterials
It is known that work pieces with nanocrystalline structure condition have much higher performance than those with an ordinary structure. There are known number of techniques for manufacturing of nanocrystalline materials in powder condition however a question of manufacturing bulk pieces in the same nanocrystalline state mentioned is that compaction and synthesizing of nanocrystalline powders ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Japan Institute of Light Metals
سال: 2023
ISSN: ['0451-5994', '1880-8018']
DOI: https://doi.org/10.2464/jilm.73.59