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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Multi-anvil press ： ウィキペディア英語版 Multi-anvil press The multi-anvil press is a type of device designed to produce extremely high pressures in a relatively small volume. This type of anvil press is used in materials science and geology for the synthesis and study of solid phase materials under extreme pressure, as well as for the industrial production of valuable minerals, especially synthetic diamonds. These instruments allow the simultaneous compression and heating of millimeter size solid phase samples such as rocks, minerals, ceramics, glasses, composite materials, or metal alloys and are capable of reaching pressures above 25 GPa and temperatures exceeding 2500 °C. This allows mineral physicists and petrologists studying the Earth’s interior to experimentally reproduce the conditions found throughout the lithosphere and upper mantle, to a depth of 700 km (citation, figure 1,2). Diamond anvil cells and light-gas guns can access even higher pressures, but the multi-anvil apparatus can accommodate much larger samples, which simplifies sample preparation and improves the precision of measurements and the stability of the experimental parameters (citation needed). ==History== The 6-8 multi-anvil apparatus was introduced by Kawai and Endo (1970) using a split steel sphere suspended in pressurized oil, later modified〔 to use the hydraulic ram. In 1990, Walker et al. simplified the first compression stage by introducing the removable hatbox design, allowing ordinary machine presses to be converted into multi-anvil systems. A variety of assembly designs have been introduced and standardized including the Walker castable,〔 and the COMPRES assemblies.〔 Recent advances have focused on in-situ measurements (link to next section), and standardizing materials and calibrations. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multi-anvil press」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.