Evolution of Alluvial Gold Mining Technologies - MDPI
This work provides historical information and examines changes in the methods and equipment used in gold recovery and processing operations. Alluvial gold recovery methods, mainly …
Metals | An Open Access Journal from MDPI
Metals is an international, peer-reviewed, open access journal published monthly online by MDPI. The Portuguese Society of Materials (SPM), and the Spanish Materials Society (SOCIEMAT) …
High-Quality Dry Etching of LiNbO3 Assisted by Proton ... - MDPI
Aug 18, 2022 · The exceptional material properties of Lithium Niobate (LiNbO3) make it an excellent material platform for a wide range of RF, MEMS, phononic and photonic applications; …
Carbon Footprint of Additively Manufactured Precious Metals …
Nov 20, 2024 · Traditionally, precious metals are processed by either lost-wax casting or the casting of semi-finished products followed by cold or hot working, machining, and surface …
Platinum on High-Entropy Aluminate Spinels as Thermally Stable …
Mar 21, 2024 · Abstract Thermal degradation is a leading cause of automotive catalyst deactivation. Because high-entropy oxides are uniquely stabilized at high temperatures via an …
Causes of Childhood Cancer: A Literature Review (2014–2021
Oct 31, 2025 · Purpose: To achieve a better understanding of the environmental factors that contribute to childhood cancers, so as to inform future prevention efforts. Methods: We …
Hot Isostatic Pressing Control of Tungsten-Based Composites
Metal-oxide composites are commonly used in high temperature environments for their thermal stability and high melting points. Commonly employed with refractory oxides or carbides such …
Firing Performance of Microchip Exploding Foil Initiator ... - MDPI
May 29, 2020 · In this paper, microchip exploding foil initiators were fabricated by micro-electro-mechanical system scale fabrication methods, such as magnetron sputtering, …
Development of a Refractory High Entropy Superalloy - MDPI
Mar 17, 2016 · Microstructure, phase composition and mechanical properties of a refractory high entropy superalloy, AlMo0.5NbTa0.5TiZr, are reported in this work. The alloy consists of a …
A Test for Susceptibility to Solidification Cracking and Liquation ...
Oct 16, 2025 · Solidification cracking and liquation cracking have been reported frequently in additive manufacturing (AM) as well as welding. In the vast majority of weldability tests, a …