铸造法制备颗粒增强铝基复合材料

铸造法是目前最主要的一种制备颗粒增强铝基复合材料的方法。叙述了几类制备颗粒增强铝基复合材料的铸造方法，并介绍了此种工艺方法应注意的技术问题及解决方法，提出了用铸造法制备颗粒增强铝基复合材料的原则。     

SiCp/Al复合材料的研究方法现状

SiC颗粒（SiCp）增强铝基复合材料因其制备工艺灵活，热物理性能优异及可设计性等许多独特的优点而具有很好的应用前景。本文综述了SiCp增强铝基复合材料的研究和进展，阐述并比较了几种该复合材料的制备工艺，包括搅拌铸造法、压力铸造法、无压渗透法、喷雾沉积法、离心铸造法和粉末冶金法等。     

基于SPD法颗粒增强铝基复合材料研究综述

简单介绍了利用几种大塑性变形工艺(Severe plastic deformation)制备颗粒增强铝基复合材料的研究概况,叙述了等径角挤压法、高压扭转法、挤扭法制备颖粒增强铝基复合材料的国内外研究现状,并对今后大塑性变形方法制备颗粒增强金属基复合材料的发展进行了展望.     

SiC颗粒增强铝基复合材料的磨损特性

铝基复合材料质轻,性能优异,已成为金属基复合材料中最有代表性的品种。铝基颗粒复合材料作为复合材料的一个分支正在快速发展,目前采用的制备方法有粉末冶金和铸造等。制得的颗粒增强铝基复合材料不仅重量轻、强度高,而且耐磨性能好,特别适于作为抗磨材料制造活塞、轴瓦等零件。本文研究了 SiC 颗粒增强铝基(ZL102)复合材料的真空热压工艺和磨损性能,结果表明,用真空热压     

SiC颗粒增强铝基复合材料的研究进展

简要介绍了SiC颗粒增强铝基复合材料的优点及几种制备方法,包括搅拌法、浸渗法、喷射法、粉末冶金法和固液分离法;并对其后热变形加工参数对复合材料的性能影响进行了论述;最后,展望了粉末冶金法制备铝基复合材料的发展前景。     

SiC和Si混合颗粒增强铝基复合材料的研究现状

SiC颗粒增强含Si铝基复合材料在制备过程中由于Si颗粒的析出,使其成为SiC和Si混合颗粒增强铝基复合材料。SiC和Si混合颗粒增强铝基复合材料具有比强度和比刚度高、耐磨性和耐疲劳性好、尺寸稳定性强、轻质等性能,广泛应用于航空、航天、电子电器等工业领域。主要介绍了SiC和Si混合颗粒增强铝基复合材料的研究现状及几种制备工艺,分析了其显微组织中存在的缺陷及复合材料性能的影响因素;展望了SiC和Si混合颗粒增强铝基复合材料的应用前景。     

SiC颗粒增强铝基复合材料制备工艺的发展现状

综述了SiC颗粒增强铝基复合材料的搅拌法、粉末冶金法、挤压铸造法、喷射沉积法、高能超声半固态复合法和高能球磨法等制备工艺的原理、特点、应用及其最新研究进展,并展望了未来的发展方向。     

非连续增强金属基复合材料及其在汽车工业的应用

介绍了金属基复合材料及其制造方法，重点讨论了搅拌法工艺，概述了颗粒增强铝基复合材料在汽车工业的应用。     

陶瓷颗粒增强铝基复合材料的研究进展

颗粒增强铝基复合材料(PRAMCs)具有高比强度、高比刚度、高弹性模量、高耐磨性、尺寸稳定性好、成本低等优点。介绍了增强颗粒的选择原则、特性及其在基体中的作用,几种典型颗粒增强铝基复合材料的发展状况、强化机理及其常用的制备方法,并列举了典型制备工艺的优点及其应用范围,国内外相关领域内的研究成果和应用状况,最后指出颗粒增强铝基复合材料是当前研究和发展的重要方向之一,具有广阔的应用前景。     

2024/SiC_p铝基复合材料薄板的制备方法研究

常见的铝基复合材料铸锭的主要制备方法有熔铸法和喷射沉积法,本研究通过工艺试验,分别完成了2024/SiC_p铝基复合材料熔铸法和喷射沉积法的铸锭制备,并通过变形加工制备出2024/SiC_p铝基复合材料薄板,并对薄板的力学性能进行了初步的分析研究。结果表明:通过熔铸法和喷射沉积法制备SiC_p颗粒增强铝合金复合材料在工艺上都是可行的,能够制备出外观质量良好的板材。在实验室制备工艺尚不稳定的条件下,初步试制出的2024/SiC_p颗粒增强铝基复合材料拥有不低于2024铝合金材料的基础力学性能,而在弹性模量等方面则具有更明显的优势,而其密度与常规2024合金基本一致,在航空领域中具有较好的应用前景。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.