Boronizing of CoCrFeMnNi High-Entropy Alloys Using Spark Plasma Sintering
نویسندگان
چکیده
In this study, we investigated the formation of a protective coating on face-centered cubic high-entropy alloy (HEA). The was formed by diffusion method. conventional method, degradation mechanical properties base material owing to prolonged high-temperature treatment is major issue. Therefore, ceramic layer using spark plasma sintering (SPS), which suppresses grain growth with rapid heating and enables fast, low-temperature processing. objective study form borides surface CoCrFeMnNi HEAs SPS method investigate their properties. A HEA prepared casting used as material, powdered mixture B4C KBF4 boron source. analysis surfaces SPS-treated samples revealed M2B, MB, Mn3B4-type surface. hardness 2000–2500 HV surface, elemental showed that certain elements exhibited characteristic behaviors.
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 کاملSpark Plasma Sintering of Ultra-High Temperature Tantalum/Hafnium Carbides Composite
TaC and HfC are thought to have the highest melting point (~4000°C) among all refractory materials. The binary solid solution of TaC and HfC (Ta4HfC5) is also considered as the most refractory material with the melting point over 4000 °C and valuable physical and mechanical properties. The main goal of this work is to fabricate TaC/HfCbased composites which consolidated by means of spark plasma...
متن کاملFull densification of Molybdenum powders using Spark Plasma Sintering
Pure molybdenum powder was sintered using Spark Plasma Sintering under various temperatures, and holding times, under a pressure of 77 MPa and a heating rate at 700°C/min. After sintering, a carbide layer was observed at the surface. The carbide layer thickness, the relative density of the sample as well as the microhardness and the grain size of Mo were measured. The carbide thickness depends ...
متن کاملEffect of Spark Plasma Sintering on the Structure and Properties of Ti1−xZrxNiSn Half-Heusler Alloys
XNiSn (X = Ti, Zr and Hf) half-Heusler alloys have promising thermoelectric properties and are attracting enormous interest for use in waste heat recovery. In particular, multiphase behaviour has been linked to reduced lattice thermal conductivities, which enables improved energy conversion efficiencies. This manuscript describes the impact of spark plasma sintering (SPS) on the phase distribut...
متن کاملHigh-Pressure Spark Plasma Sintering (HP SPS): A Promising and Reliable Method for Preparing Ti–Al–Si Alloys
Ti-Al-Si alloys are prospective material for high-temperature applications. Due to low density, good mechanical properties, and oxidation resistance, these intermetallic alloys can be used in the aerospace and automobile industries. Ti-Al-Si alloys were prepared by powder metallurgy using reactive sintering, milling, and spark plasma sintering. One of the novel SPS techniques is high-pressure s...
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 manufacturing and materials processing
سال: 2022
ISSN: ['2504-4494']
DOI: https://doi.org/10.3390/jmmp6020029