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您的检索式：作者名="C.MARTíNEZ"
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| 1 | 热机械化学法制备Ag-ZnO粉末(英文)显示文摘Ag-CdO复合材料由于其优异的电气和力学性能,仍然是低压应用中最常用的电触头材料之一。然而,考虑到由于镉的毒性而对其应用的限制,有必要寻找可取代这种复合材料的替代材料。本研究以Ag-Zn固溶体为原料,采用热机械化学工艺制备Ag-ZnO合金。在138°C、1200 cm^3/min的氧气流下,在改进的球磨机中对合金样品进行热机械化学处理3 h,利用X射线衍射技术、场发射扫描电镜和透射电镜对合成材料的显微组织和相演变进行研究。结果表明,低温下的热机械化学处理可使Ag-Zn固溶体在短时间内完全氧化。这种新的合成方法可以制备出纳米ZnO相均匀分布的Ag-ZnO复合材料,而这是用传统的材料加工方法无法实现的。考虑到改善电触头材料性能的根本途径在于实现Ag基体中第二相的均匀分散,这一新工艺为Ag-ZnO复合材料取代非环境友好的Ag-CdO提供了可能。 | D.GUZMáN C.AGUILAR P.ROJAS J.M.CRIADO M.J.DIáNEZ R.ESPINOZA A.GUZMáN C.MARTíNEZ | 2019 | Transactions of Nonferrous Metals Society of China2019，29，2： | 3 |
| 2 | A simple and efficient PCR method for the detection of Agrobacterium tumefaciens in plant tumours显示文摘 | J.Cubero M. C.Martínez P.Llop M. M.López | 2001 | Journal of Applied Microbiology2001，，4： | 1 |
| 3 | Preandean geological confguration of the eastern North Patagonian Massif, Argentina显示文摘The Preandean geological confguration of the eastern North Patagonian Massif is established through the use of geological and geophysical analysis.The positive gravity anomalies located near the Atlantic coast are due to535 and 540 Ma old rocks belonging to the Pampean Orogeny(Precambrianemiddle Cambrian),which are widely recognized in central and northern Argentina.The Famatinian Cycle(OrdovicianeDevonian)is represented by a SilurianeDevonian marine basin equivalent to those of eastern-central Argentina and South Africa,and which was deformed at the end of the Devonian by an wEeW to WNWeESE compressional event,part of the Famatinian Orogeny.Containing strong gravity gradients,the NWeSE belt is coincident with fault zones which were originated during the Gondwanide Orogeny.This event also produced NWeSE overthrusting of the SilurianeDevonian sequences and strike-slip faults that displaced blocks in the same direction.This deformation event belongs to the Gondwanide Orogeny that includes movements related to a counterclockwise rotation of blocks in northern Patagonia.The strong negative anomalies located in the western part of the area stem from the presence of rocks of the Jurassic Ca adón Asfalto basin interbedded in the Marifl Complex.These volcaniclastic sequences show mild deformation of accommodation zones in a pre-Jurassic paleorelief. | Daniel A.Gregori José Kostadinoff Guillermina Alvarez Ariel Raniolo Leonardo Strazzere Juan C.Martínez Mercedes Barros | 2013 | Geoscience Frontiers2013，4，6： | 0 |
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