论文标题

纯银烧结期间的肿胀否定:一种实验和理论方法

Swelling negation during sintering of sterling silver: An experimental and theoretical approach

论文作者

Manière, Charles, Saccardo, Elia, Lee, Geuntak, Mckittrick, Joanna, Molinari, Alberto, Olevsky, Eugene A.

论文摘要

纯银烧结的主要挑战之一是导致脱敏的肿胀现象和烧结动力学的大量降低。这种肿胀现象反对烧结,需要通过良好控制的加工氛围来解决。在本研究中,在空气,氩气和真空中研究了纯银的无压力烧结行为。特殊修饰的火花等离子体烧结模具旨在研究高真空环境中纯银的无压力烧结。进行的分析扩展到了烧结的新构成方程,从而可以预测肿胀现象以及相反的内部等效压力的鉴定。

One of the main challenges of the sintering of sterling silver is the phenomenon of swelling causing de-densification and a considerable reduction of the sintering kinetics. This swelling phenomenon opposes sintering and it needs to be addressed by a well-controlled processing atmosphere. In the present study, the pressure-less sintering behavior of sterling silver is investigated in air, argon, and vacuum. A specially modified spark plasma sintering mold is designed to study the pressure-less sintering of sterling silver in a high vacuum environment. The conducted analysis is extended to the new constitutive equations of sintering enabling the prediction of the swelling phenomena and the identification of the internal equivalent pressure that opposes the sintering.

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