Thermal Stability and Microstructure of Nanometric 2024 Aluminum Alloy Powder Obtained by Cryogenic Milling and Spark Plasma Sintering

Demétrio, Kétner Bendo; Molinari, A.

doi:10.1590/1980-5373-mr-2018-0182

Cited by 2 publications

(1 citation statement)

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“…Nassetti, G. and Hessling, G . have reported a reduction in energy consumption, using an additional attritor mill (balls size 3‐7 mm), within the ceramic tile process after conventional milling (CM).…”

Section: Introductionmentioning

confidence: 99%

Additional high‐energy milling to enhance the performance of porcelain stoneware manufacturing

Darolt

Cargnin

Peterson

et al. 2020

Int J Applied Ceramic Tech

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Porcelain stoneware tile is the best class of ceramic tiles regarding technical performance. Low porosity and high glass content are some of its highlighted characteristics. The manufacturing cost is highly dependent on the feldspar content and the processing flow rate. Certain technical bottlenecks in the manufacturing steps, such as milling, forming, and firing, are intrinsically associated with limitations in the processing properties, such as the dry strength, bulk density, and pyroplastic deformation. In this work, improvements in these properties were achieved using high‐energy milling (HEM) after conventional milling (CM). This study was carried out on a pilot industrial scale in the milling stage. Six experimental runs were evaluated. Slurries were spray‐dried. The powders were humidified with 6.5% moisture. Specimens were conformed under a specific pressure of 45 MPa. The firing was performed using temperature ranging from 1150 to 1230°C. The use of HEM, in comparison to traditional milling for the similar particle‐size distributions, has increased the dry density, +0.2 g.cm−3, dry bending strength, +1.0 MPa, and decreased the pyroplastic deformation index, −1.10−5 cm−1. These results allow an estimated thickness reduction of 10%.

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Section: Introductionmentioning

confidence: 99%