聚八钛酸钾晶须增强ZL109复合材料的润滑磨损行为

本文研究了聚八钛酸钾晶须增强ＺＬ１０９复合材料的润滑磨损行为．研究发现，聚八钛酸钾品须增强铝合金复合材料和ＺＬ１０９的磨损量负荷的增加而增加：在较低负荷的条件下，两种材料的耐磨性大致相当；在较高负荷的条件下该复合材料的耐磨性高于ＺＬ１０９。     

高温下Al2O3／Al合金复合材料的界面稳定性和拉伸强度

利用挤压铸造制备了Ａｌ２Ｏ３／Ａｌ合金复合材料，研究了高温下复合材料的界面稳定性和拉伸强度，结果表明，在Ａｌ２Ｏ３／ＺＬ１０９复合材料中，纤维与基体之间的界面上发生了化学反应，有利于纤维与基体的结合；在高温下界面层结构稳定，与基体合金相比。Ａｌ２Ｏ３／ＺＬ１０９复合材料具有较好的高温拉伸强度，工作温度可提高１００℃以上，另外，分析了Ａｌ２Ｏ３／ＺＬ１０９复合材料高温拉抻的失效形式。     

莫来石纤维/ZL109 复合材料中纤维分布状况分析

本文统计分析了不同保压压强下得到的莫来石短纤维／ＺＬ１０９复合材料高度上的纤维分布状况,发现纤维在试样高度上的分布是不一致的;保压压强对纤维的分布状况没有影响。     

莫来石纤维／ZL109复合材料中纤维分布状况分析

本文统计分析了不同保夺压强下得到的莫来石短纤维／ＺＬ１０９复合材料高度上的纤维分布状况，发现纤维在试样上高度上的分布是不一致的；保压压强对纤维的分布状况没有影响。     

耐热耐冲蚀磨损复合涂料的研制

研究了涂料的配方，固化工艺耐热性能和耐枯损性能，结果表明：由耐热环氧树脂，改性固化剂，耐热填料为主要成分的ＺＬ－Ｔ１涂料，在１００℃固化三小时后，具有优良的耐热，耐冲蚀磨损性能，可以在２５℃至１５０℃温度范围内长期作为耐冲蚀磨蚀材料使用，耐冲蚀能力是１６Ｍｎ钢的２．８倍以上，ＺＬ－Ｔ１涂料粘接强度下降１％，冲蚀率上升１．２１％。     

碱式硫酸镁晶须增强PVC材料性能的研究

以表面改性处理的碱式硫酸镁晶须为添加剂,加入到PVC基料中,利用单因素条件实验法重点研究晶须加入量对复合材料性能的影响,利用万能材料实验机测试试样的力学指标,借助扫描电子显微镜观察复合材料断口处晶须的分布情况．结果表明：不同的晶须加入量制得复合材料的力学性能有明显差异,其中当晶须加入量为40份时,复合材料的综合性能最佳,复合材料的冲击断裂强度提高了62．43％,弹性模量提高了52．38％,断裂伸长率降低到纯PVC基料指标的15．09％,文中对晶须的增强机理亦进行了分析和探讨．     

LMPM/PP原位复合材料的力学强度

通过熔融混炼并挤出压延成型制备了ＬＭＰＭ／ＰＰ原位复合材料,研究了原位复合材料的拉伸性能和冲击性能。结果表明ＬＭＰＭ能在ＰＰ基体中形成微纤增强相,使材料的拉伸强度成倍增加,冲击韧性也比纯ＰＰ高。ＬＭＰＭ／ＰＰ原位复合材料的力学强度与偶联剂用量、ＬＭＰＭ用量有关,在ＬＭＰＭ微纤的取向方向和垂直方向,力学强度也有很大差异。当ＬＭＰＭ用量为２０％,ＤＢＴＬ为１．０％,或ＮＤＺ为０．７％时,ＬＭＰＭ／ＰＰ原位复合材料在平行于微纤方向的拉伸强度为１４０～１５０ＭＰａ,是纯ＰＰ的３．９～４．１倍,垂直于微纤方向的拉伸强度为５９～７０ＭＰａ,是纯ＰＰ的１．６３～１．９３倍,平行于微纤方向的冲击强度为６０～７０Ｊ／ｍ,是纯ＰＰ的１．６２～１．８９倍,垂直于微纤方向的冲击强度为３８～４５Ｊ／ｍ,略高于纯ＰＰ。     

热处理对SiCp／ZL102复合材料力学和物理性能的影响

研究了不同热处理方法对ＳｉＣｐ／ＺＬ１０２复合材料力学和物理性能的影响；通过对金相和透射电镜照片的分析，初步探讨了热处理的强化机理．试验结果表明：Ｔ６热处理可大幅度提高ＳｉＣｐ／ＺＬ１０２复合材料的强度；Ｔ４热处理可增加该材料的延伸率；复合材料强度的提高是白于ＳｉＣｐ的均匀分布和ＳｉＣｐ与Ａ１基体热膨胀系数差导致的高密度位错产生的；两种处理都可提高材料的硬度．     

干摩擦条件下Al_2O_（3f）／ZL109复合材料的磨损行为

用压铸法制备Ａｌ２Ｏ（３ｆ）／ＺＬ１０９复合材料，研究了恢复合材料在干摩擦条件下磨损量与滑动距离的关系，结果表明：复合材料磨损失效的临界值远高于其基体合金．同一时刻对应的耐磨性也明显高于基体合金。借助ＳＥＭ及ＥＰＭＡ等手段对磨损表面及亚表面和粘着磨损的材料转移情况进行了观察和分析，并对磨损机制进行了讨论。     

TiAl3内生增强铝基复合材料研究

研究了内生复合材料ＴｉＡｌ３／ＺＬ１０１ 的金相组织和常规力学性能,探讨了复合材料增强的基本原理．研究表明,内生复合材料中增强物呈弥散分布;无论在铸态还是热处理态,复合材料的强度和硬度都较基体有较大幅度提高,特别是延伸率也较基体略有增加．这是内生增强体与外加增强体制备的复合材料性能变化的显著不同点．     

(TiB_2+SiC_p)/ZL101复合材料组份优化及其力学性能

为了确定(TiB2+SiCp)/ZL101复合材料的最佳成分,通过采用正交实验分析方法,研究复合材料的制备工艺,测试了复合材料的力学性能,并对该材料进行了显微金相分析和透射电子显微分析.结果表明,复合材料经过热处理后,抗拉强度、布氏硬度分别较基体合金ZL101提高了21.4%、49.3%;热膨胀系数较基体合金降低了14.1%;热处理后,复合材料中的共晶硅以粒状形态均匀分布于基体中;复合材料中增强相TiB2为粒状,SiC粒子为多边形尖角块状,两相较均匀分布于基体晶粒内部,且与-αAl的界面结合良好.     

粉料对远红外丙纶熔体和纤维性能的影响

本文分析了远红外丙纶的熔体性质和纤维的力学、动态力学性能．结果表明，远红外丙纶中粉料对其性能有一定影响．远红外丙纶熔体的剪切应力和表观粘度均比纯丙纶高．远红外丙纶纤维具有良好的拉伸性能，随着拉伸倍数的增加，纤维的强度、动态模量升高，伸长率降低．     

ZL102合金热压缩变形力学性能和微观组织的研究

研究了不同压缩比对ZL102合金的显微组织及性能的影响．实验结果表明：ZL102在铸态结构组织下,其机械性能较差,但是在经过热压缩加工以后其抗拉强度有了不同程度的提高,并且和其变形量有着直接的关系,其中压缩比为85．81oA时抗拉强度增加幅度最大;ZL102经过热压缩以后,其塑性没有明显的改善;金相组织观察表明,随着变形量的增加,晶粒细化程度增大．     

竹再生纤维弹力牛仔布的研制与生产

采用竹再生纤维和莱卡纤维试织弹力牛仔布．文中介绍了其材料准备、织造工序和工艺以及后整理过程．测试确认，竹再生纤维弹力牛仔布经磨毛水洗后，强力和收缩率与纯棉牛仔布相近，柔软程度优于纯棉牛仔布．     

Study on Grain Refining and Metamorphism of ZL111 Aluminium Alloys

Vacuum sintering and ball milling methods were employed in the preparation process of Ti-C grain refinement and the ability of refiners with varying ratios of Ti and C to refine ZL111 crystal grains was tested. The refinement effect of the Ti-C ratios on tensile strength, elongation percentage, Brinell hardness, pro-eutectoid αAl and the size of the Si phase of ZL111, after modification by rare-earth and strontium nitrate, were studied by means of metallographic examination, SEM and mechanical property tests. The results show that there is an obvious increase in the tensile strength and elongation percentage of refined ZL111 with these new Ti and C refiner compounding powders, while Brinell hardness remained more or less constant. The pro-eutectoid αAl is considerably reduced in size and the Si phase shows a finer and rounder structure. The refiner exhibits a good grain refining performance when the Ti-C ratio is 25：1, for Al crystals can favorably easily form nuclei and grow up along the TiC surface thanks to the TiAl3 generated by surplus Ti and Al. The mechanical properties have clearly been improved by the addition of strontium nitrate to ZL111. The effective factors in the modification of mechanical properties of ZL111 are in order of importance： strontium nitrate, Ti-C ratio and rare earth.     

Effects of electric pulse on microstructure of Al-Si alloy in liquid and solid states

In order to investigate the change in liquid microstructure of Al-Si alloy treated by electric pulse (EP), X-ray diffraction tests with liquid A1-Si alloy and ZL109 alloy treated or not by EP were carried out. The results show that the number of Al-Si atomic clusters decreases and that of Al-Al and Si-Si atomic clusters increases for the treated samples. The tests with ZL109 alloy indicate that a large amount of primary crystal Si appears in the solidified microstructure after treated by EP. It is found that EP can change the microstructure of liquid metal by affecting the probability of electrons appearing in different atoms (Al and Si) in the liquid metal.The combining force of different atoms decreases relatively, and that of the same atoms increases, which is the main reason of re-ducing the atomic cluster with different atoms (Al-Si) and increasing the atomic cluster with the same atoms (Al-Al, Si-Si). The in-creasing of the atomic cluster with the same atom cluster resulted in the increasing of Si activity and the higher point of eutectics in the phase diagram. It makes a lot of primary silicon appeared in ZL109 alloy.     

The Structural Evolutions of ZL109 Alloy and 7050 Alloy in the Semisolid Squeeze Casting Process

The structure evolutions of ZL109 alloy and 7050 alloy were studied in the processes of preparing raw billets by low super heat casting, remelting the raw billets, semisolid forming and heat treating components. The thin and symmetrical structure was obtained by using low super heat casting process. The eutectic that lied in the raw billet of ZL109 alloy remelted and produced liquid phase in the process of remelting, but to the 7050 alloy, the eutectic of intergranular and the pointedness of grains was reme...     

The structural evolutions of ZL109 alloy and 7050 alloy in the semisolid squeeze casting process

The structure evolutions of ZL109 alloy and 7050 alloy were studied in the processes of preparing raw billets by low super heat casting, remelting the raw billets, semisolid forming and heat treating components. The thin and symmetrical structure was obtained by using low super heat casting process. The eutectic that lied in the raw billet of ZL109 alloy remelted and produced liquid phase in the process of remelting, but to the 7050 alloy, the eutectic of intergranular and the pointedness of grains was remelted to make the grains more uniform and smooth. In the process of semisolid forming, the primary α and the eutectic inside the ZL109 alloy were separated partly and the grains in the 7050 alloy was conglutinated together. After heat treatment, the eutectic α grains of ZL109 traveled to primary α and shaped the white fishing net like organization; the eutectic Si grains assembled into the black massive particles. As to 7050, after heat treatment, α particles recrystallized and thin grains pattern was obtained.