Preparation of micro-size flake silver powder by planetary ball mill

Li, Qiuying; Liu, Shouchao; Li, Shourui; Guo, Weihong; Wu, Chifei

doi:10.1007/s10854-015-3773-x

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…Hence, both the ball-milled Ag and the Ag-In alloy powders were refined through the fracturing effect during the milling. The agglomeration and coarsening of ductile Ag and In powders caused by cold welding could be effectively inhibited by the addition of stearic acid, which was consistent with previous studies [30]. The Ag and Ag-In alloy powders were sieved with a 25 µm mesh after ball-milling.…”

Section: Characterization Of the Ag And Ag-in Alloy Powders After Bal...supporting

confidence: 88%

Development of Ag–In Alloy Pastes by Mechanical Alloying for Die Attachment of High-Power Semiconductor Devices

2022

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Sintered silver paste is widely used as the die-attachment material for power semiconductors. However, sintered silver joints encounter problems, such as severe coarsening of sintered pores and oxidation issues, in harsh high-temperature environments. These lead to the deterioration of the die-attachment joints. In this paper, a novel method of sintering silver joints is demonstrated, where silver–indium alloy paste is used to improve the reliability of sintered Ag joints. The silver–indium (Ag–In) alloy paste was fabricated through mechanical alloying using the ball-milling technique. The well-bonded sintered Ag–In alloy joints inhibited pore coarsening better than pure sintered Ag joints and significantly enhanced the mechanical properties at high operating temperatures. Lastly, an oxidation mechanism for the sintered joint was proposed, and strategies to prevent such high-temperature oxidation were discussed.

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Section: Characterization Of the Ag And Ag-in Alloy Powders After Bal...supporting

confidence: 88%

Development of Ag–In Alloy Pastes by Mechanical Alloying for Die Attachment of High-Power Semiconductor Devices

2022

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“…The particle size results seen from the Fig.2 is consistent with the results of particle size analysis, but may also be derived from this figure size distribution results, when loading quantity is small, the powder particle size distribution is narrow, and when loading quantity is large, the powder particle size distribution is wider. This is mainly due to the added material is small, the milling media in the ball mill jar single particles of quartz sand powder were impact milled and greatly increase the chance of breaking [15][16], so it is easy to obtain a narrow particle size distribution quartz sand powder. Conversely, loading quantity is large, a single milling medium grained quartz sand powders were impact, grinding and crushing odds greatly reduced, thus it is easy to obtain a wide particle size distribution of quartz sand powder.…”

Section: Fig1 Effect Of Ball Milling Loading Quantity On the Averagementioning

confidence: 99%

Influence of Loading Quantity on the Properties of Quartz Sand Powder via Mechanical Ball Milling Method

Wang¹,

Wang²,

Yang³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. In order to improve the utilization and added value of the Yangtze river sand, the raw materials for preparing high performance quartz sand insulating brick were investigated, the following conclusions can be obtained through investigating the influence of mechanical milling loading quantity on performance of quartz sand powder. With the increase in milling added material, the average particle size of quartz sand is gradually increased. When the loading quantity is small, the powder particle size distribution is narrow, and when loading quantity is large, the powder particle size distribution is wider. With the increase of milling added material, quartz sand powder high cone decreases, namely quartz sand powder flowability loading quantity increases gradually changed for the better. With the increase of quantity of milling device, tap density of quartz sand powder increases. However, when loading quantity higher than 200g/L ball milling, quartz sand tap density increased considerably larger. Comprehensive consideration the overall process, milling loading quantity was 200g/L preferably, the average particle diameter of quartz sand powder is 11.21um.

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“…Ag nanoflakes can be prepared via either physical or chemical methods. Physical methods, like the ball-milling method, 24 can be used to prepare Ag nanoflakes, but the nanoflakes have poor crystallinity and a rough surface. Chemical methods, such as electrochemical methods, 25 ultrasonic radiation, 26 solvothermal methods, 27 direct chemical reduction, 28 and photo-induced chemical methods, 29 have been widely used to synthesize Ag nanoflakes.…”

Section: Introductionmentioning

confidence: 99%

The hydrothermal synthesis of ultra-high aspect ratio Ag nanoflakes and their performance as conductive fillers in heaters and pastes

Wang

2018

RSC Adv.

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Preparation of micro-size flake silver powder by planetary ball mill

Cited by 7 publications

References 16 publications

Development of Ag–In Alloy Pastes by Mechanical Alloying for Die Attachment of High-Power Semiconductor Devices

Development of Ag–In Alloy Pastes by Mechanical Alloying for Die Attachment of High-Power Semiconductor Devices

Influence of Loading Quantity on the Properties of Quartz Sand Powder via Mechanical Ball Milling Method

The hydrothermal synthesis of ultra-high aspect ratio Ag nanoflakes and their performance as conductive fillers in heaters and pastes

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