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Biodegradable starch/poly(vinyl alcohol) film reinforced with titanium dioxide nanoparticlesZahra Hejri1,Ali Akbar Seifkordi1,Ali Ahmadpour2,Seyed Mojtaba Zebarjad31. Department of Chemical... University摘 要:Biodegradable starch/poly(vinyl alcohol)/nano-titanium dioxide(ST/PVA/nano-TiO2)nanocomposite films were prepared via a solution casting......
Effect of Zirconium Content on Microstructure and Magnetic Properties of Nanocomposite Bonded Magnets Tu Mingjing1,Lian Lixian1,Liu Ying1,Gao Shengji1 (1.College of Materials Science & Engineering...; Zirconium; nanocomposite magnets; microstructure; magnetic properties; rare earths; [全文内容正在添加中] ......
corresponds to the nanocomposite Ti-63%B-N (mole fraction) coating consisting of the HCP-TiB2 nano-crystallites and amorphous BN phase. The lowest friction-coefficient was observed for the nanocomposite Ti-41%B-N (mole fraction) coating consisting of the FCC-TiN nanocrystallites and amorphous BN phase. Key words: Ti-B-N coating; plasma-enhanced chemical vapor deposition (PECVD); nanocomposite......
射流电沉积Ni-SiC纳米镀层的腐蚀行为研究娄燕敏1,孙健1,2,夏法锋11. 东北石油大学机械科学与工程学院2. 大庆师范学院摘 要:为提高Ni-SiC纳米镀层的耐腐蚀性能,采用射流电沉积方法,在Q235钢基体表面制备Ni-SiC纳米镀层.利用FLUENT软件仿真不同喷嘴直径对喷射镀液的速度和动能参数影响,采用扫描电子显微镜,透射电镜,X射线衍射仪和电化学工作站对不同喷嘴直径下喷射电沉积制备Ni-SiC纳米镀层的表面形貌,显微组织,腐蚀行为进行研究.当喷嘴直径为8 mm时,喷射电沉积过程镀液的射流速度和动能较其他喷嘴直径下的大,最大射流速度和动能分别为113 m/s和543 J.此参数下制备的Ni-SiC纳米镀层具有致密,均匀的表面结构,大量SiC纳米颗粒嵌入Ni-SiC纳米镀层,Ni和SiC的平均......
Film Layer Structure and Wear Resistance on High Strength Room Temperature Blackening of Cu-Se-P System ZHANG Yu-feng1,WANG Jian-cheng1,ZHOU Hou-qiang1 (1.Wuhan Ordnance Noncommissioned Officer School, Wuhan 430075 ,China) 摘要:In this paper,the high strength room temperature blackening film on steel surface were prepared, the structure and the forming principle of the film were studied. The Cu......
matrix Ni, and the introduce of ultrasound further refines Ni grains. The CeO2 nanoparticles dispersed in coatings effectively decrease the mass increment of the nanocomposite coatings after oxidation. The significant improvement in high temperature oxidation resistance of the nanocomposite coatings is attributed to the refinement of Ni electrocrystalline grains due to co-deposited CeO2 nanoparticles......
RESEARCH OF FILM THICKNESS DURING DRAWING PROCESS LUBRICATED WITH O／W EMULSIONS＋Yan Hengzhi1; Zhong Jue1; Wang Dianzuo2(1. Department of Mechanical Engineering. Central South University of Technology... process. we have established the mathematical model of film thickness lubricated with emulsions during drawing process, The film thickness calculated with the model under general condition is very close......
Effects of Surfactants SDS and CTAB on Ni-SiC Deposition阚洪敏,FENG Xiaojun,WEI Xiaodong,ZHANG Ning,WANG Xiaoyang,LONG HaiboKey Laboratory of Advanced Materials Technology of Liaoning Province, Shenyang University摘 要:The influences of surfactant type and concentration on the content and uniformity of SiC particles in Ni-SiC deposit were studied......
热处理对Ni-SiC镀层表面形貌和性能的影响杨蕊1,马春华21. 东北石油大学机械科学与工程学院2. 大庆油田有限责任公司采油四厂摘 要:采用直流电镀,脉冲电镀和超声波-脉冲电镀方法制备Ni-SiC镀层,研究热处理温度对Ni-SiC镀层表面形貌,显微硬度以及电化学腐蚀性能的影响.结果表明:经过200℃的热处理后,超声波-脉冲电镀法获得的镀层,其金属晶粒最细密,镀层表面更加光滑;热处理温度在300℃,直流电镀法,脉冲电镀法和超声波-脉冲电镀法制备的镀层显微硬度达到最大值,分别为884HV,902HV,915HV;超声波-脉冲电镀法制备的Ni-SiC镀层耐腐蚀性能最好,而直流电镀法制备的镀层耐腐蚀性能最差.关键词:热处理;表面形貌;显微硬度;耐腐蚀性能;......
基于BP模型的Ni-SiC镀层镀速预测研究陈丽莉安徽工业职业技术学院机械工程系摘 要:采用超声波辅助电沉积法,在45钢表面制备Ni-SiC镀层,研究不同工艺参数对Ni-SiC镀层镀速的影响.采用3×6×1型BP模型对Ni-SiC镀层的镀速进行研究.结果表明:Ni-SiC镀层中SiC颗粒的平均粒径为158 nm,镍晶粒的平均粒径为714 nm;BP模型预测值曲线与实验值曲线吻合度较高,其最大相对误差为2.4%,相关系数为0.998.该BP模型具有很好的自适应能力.关键词:BP模型;预测;Ni-SiC镀层;......
