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明,添加Cr可降低Ni-10Al合金的腐蚀速率;在700℃,Ni-10Al合金氧化动力学曲线遵循直线规律,而Ni-xCr-10Al合金的氧化动力学曲线则为多段抛物线;在800℃,所有合金的腐蚀均遵循近似抛物线规律且合金中的Cr含量越高腐蚀速率越低;Ni-10Al合金生成含NiS和AlO的复杂氧化膜;Ni-3Cr-10Al生成不规则的AlO膜,其下为CrS的内腐蚀区;而Ni-5Cr-10Al和Ni-10Cr-10Al则生成AlO薄膜.计算了混合气氛中的平衡氧势和硫势,预测了合金与气氛可能发生的反应,并解释了腐蚀机制.关键词:Ni-Cr-Al合金; 氧化; 硫化; Cr;......
]. Trans Nonferrous Met Soc China, 2006, 16(3): 567-571. [24] LIAN J S, LI G Y, NIU L Y, GU C D, JIANG Z H, JIANG Q. Electroless Ni-P deposition plus zinc phosphate coating on AZ91D magnesium alloy [J... Improvement of anticorrosion and adhesion to magnesium alloy by phosphate coating formed at room temperature NIU Li-yuan(牛丽媛), LIN Ji-xing(林继兴), LI Yong(李 勇), SHI Zi-mu(史子木), XU Lin-chao(徐临超......
Coating of SiC Powder with Nano YAG Phase SUN Xudong1,QIU Guanming2,Zhang Ning3,Ru Hongqiang1,Li Ying1,Cai Qingkui3 (1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004...) Abstract:SiC-YAG(Y3Al5O12) ceramic composite powders were prepared by co-precipitation coating method. Mechanism of co-precipitation coating of SiC powders with Y3+ and Al3+ precursors was investigated......
Ni-Cr-Al合金有序化早期原子尺度的模拟 褚忠1,李永胜1,王永欣1,卢艳丽1,陈铮1 (1.西北工业大学,凝固技术国家重点实验室,陕西,西安,710072) 摘要:基于三元体系的离散格点的微观相场模型,模拟研究温度1123 K时三元合金Ni-Cr-Al有序化早期过程,通过研究沉淀过程原子图像和序参数曲线的演化,发现低饱和度合金Ni-15at.%Cr-10.5at.%Al沉淀机制为非经典形核长大,沉淀过程包括D022有序相的形核长大,L12有序相的形核和D022有序相向L12有序相的转化3个阶段.由于Cr原子替代Al原子位置,在L12有序相内两种原子占位几率接近,形成Ni3(CrxAl1-x)结构的L12有序相,并且与D022有序相共存.高饱和度合金沉淀机制为等成分有序化和失稳分解混合机制,并且有序化和簇聚过程比低饱和度合金提前. 关键词:微观相场模型; Ni-Cr-Al......
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Influencing factors of surface roughness of MAO ceramic coating on AZ91D DI Shi-chun (狄士春), PAN Ming-qiang (潘明强), CHI Guan-xin (迟关心) School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China Received 28 July 2006; accepted 15 September 2006 Abstract:To investigate the treating parameters’ influence on the surface roughness of the MAO ceramic coating......
Aluminizing Coating and Aluminizing-Y2O3 Coating Deposited by Pulsed Spark 高高唯1,王德仁2,何业东2,齐惠滨2,黄祖芬2 (1.Department of Chemistry and Material Engineering, University of Auckland, Auckland, New Zealand;2.Department of Surface Science and Corrosion Engineering, University of Science and Technology Beijing,) Abstract:Aluminizing coating and aluminizing-dispersed Y2O3 composite coating were prepared......
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J. Cent. South Univ. Technol. (2008) 15: 54-58 DOI: 10.1007/s11771-008-0012-0 Synthesis of P(St-BA-MAA-SPAA) nano-latex and its application in high anti-corrisive coating LIU Hai... were investigated. And the anti-corrosive property of the resultant zinc-rich coating was studied. The results show that the nano-latex is self-stabilized and has a narrow particle diameter......
]. Surface and Coating Technology, 2003, 163-164: 484-490. [7] WEI Tong-bo, TIAN Jun, YAN Feng-yuan. Structure and wear resistance of ceramic layer on LY12 Al alloy by micro-arc oxidation[J]. Chinese... Wear resistance of ceramic coating on AZ91 magnesium alloy by micro-arc oxidation ZHAO Hui(赵 晖)1, 2, LIU Zheng(刘 正)1, CHEN Li-jia(陈立佳)1, CHEN Ji(陈 吉) 3, HAN Zhong(韩 忠)3 1. College of Materials......