Effect of high energy ball milling and low temperature densification of plate-like alumina powder

Maryam Saghir; Malik Adeel Umer; Ashfaq Ahmed; Nasbah Bint Monir; Umair Manzoor; Abdul Razzaq; Luo Xian; Khwaja Mohammad; Muhammad Shahid; Young Kwon Park

doi:10.1016/j.powtec.2021.01.026

Effect of high energy ball milling and low temperature densification of plate-like alumina powder

Maryam Saghir, Malik Adeel Umer, Ashfaq Ahmed, Nasbah Bint Monir, Umair Manzoor, Abdul Razzaq, Luo Xian, Khwaja Mohammad, Muhammad Shahid, Young Kwon Park

School of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The effects of high energy milling on the shape, size and low temperature sinterability of plate-like alumina powder was studied. The milling effects were studied under three different processing conditions, designed by varying the charge ratio and the milling medium. 10:1 and 20:1 ball to powder charge ratios were considered in wet and dry milling media, with powder samples collected after 4, 8, 16 and 32 h of milling. Analysis demonstrates that 20:1 wet milled powders underwent greatest size reduction with a final average particle size of 0.29 um and crystallite size of 10.13 nm. 20:1 wet milled powders were subsequently sintered at 1300 °C for 10 and 20 h. Results indicate that densification and hardness increased as a function of milling time, reaching to a maximum for 16 h milled samples with the least amount of porosity.

Original language	English
Pages (from-to)	84-92
Number of pages	9
Journal	Powder Technology
Volume	383
DOIs	https://doi.org/10.1016/j.powtec.2021.01.026
State	Published - May 2021

Keywords

Crystallite size
Hardness
High-energy ball milling
Morphology
Particle size
Sintering

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10.1016/j.powtec.2021.01.026

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title = "Effect of high energy ball milling and low temperature densification of plate-like alumina powder",

abstract = "The effects of high energy milling on the shape, size and low temperature sinterability of plate-like alumina powder was studied. The milling effects were studied under three different processing conditions, designed by varying the charge ratio and the milling medium. 10:1 and 20:1 ball to powder charge ratios were considered in wet and dry milling media, with powder samples collected after 4, 8, 16 and 32 h of milling. Analysis demonstrates that 20:1 wet milled powders underwent greatest size reduction with a final average particle size of 0.29 um and crystallite size of 10.13 nm. 20:1 wet milled powders were subsequently sintered at 1300 °C for 10 and 20 h. Results indicate that densification and hardness increased as a function of milling time, reaching to a maximum for 16 h milled samples with the least amount of porosity.",

keywords = "Crystallite size, Hardness, High-energy ball milling, Morphology, Particle size, Sintering",

author = "Maryam Saghir and Umer, {Malik Adeel} and Ashfaq Ahmed and Monir, {Nasbah Bint} and Umair Manzoor and Abdul Razzaq and Luo Xian and Khwaja Mohammad and Muhammad Shahid and Park, {Young Kwon}",

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year = "2021",

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doi = "10.1016/j.powtec.2021.01.026",

language = "English",

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AU - Saghir, Maryam

AU - Umer, Malik Adeel

AU - Ahmed, Ashfaq

AU - Monir, Nasbah Bint

AU - Manzoor, Umair

AU - Razzaq, Abdul

AU - Xian, Luo

AU - Mohammad, Khwaja

AU - Shahid, Muhammad

AU - Park, Young Kwon

PY - 2021/5

Y1 - 2021/5

N2 - The effects of high energy milling on the shape, size and low temperature sinterability of plate-like alumina powder was studied. The milling effects were studied under three different processing conditions, designed by varying the charge ratio and the milling medium. 10:1 and 20:1 ball to powder charge ratios were considered in wet and dry milling media, with powder samples collected after 4, 8, 16 and 32 h of milling. Analysis demonstrates that 20:1 wet milled powders underwent greatest size reduction with a final average particle size of 0.29 um and crystallite size of 10.13 nm. 20:1 wet milled powders were subsequently sintered at 1300 °C for 10 and 20 h. Results indicate that densification and hardness increased as a function of milling time, reaching to a maximum for 16 h milled samples with the least amount of porosity.

AB - The effects of high energy milling on the shape, size and low temperature sinterability of plate-like alumina powder was studied. The milling effects were studied under three different processing conditions, designed by varying the charge ratio and the milling medium. 10:1 and 20:1 ball to powder charge ratios were considered in wet and dry milling media, with powder samples collected after 4, 8, 16 and 32 h of milling. Analysis demonstrates that 20:1 wet milled powders underwent greatest size reduction with a final average particle size of 0.29 um and crystallite size of 10.13 nm. 20:1 wet milled powders were subsequently sintered at 1300 °C for 10 and 20 h. Results indicate that densification and hardness increased as a function of milling time, reaching to a maximum for 16 h milled samples with the least amount of porosity.

KW - Crystallite size

KW - Hardness

KW - High-energy ball milling

KW - Morphology

KW - Particle size

KW - Sintering

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DO - 10.1016/j.powtec.2021.01.026

M3 - Article

AN - SCOPUS:85100057887

SN - 0032-5910

VL - 383

SP - 84

EP - 92

JO - Powder Technology

JF - Powder Technology

ER -

Effect of high energy ball milling and low temperature densification of plate-like alumina powder

Abstract

Keywords

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