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Corrosion Behavior and Protection Efficiency of 2024Al and SiC_p/2024Al Metal Matrix Composite 被引量:2
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作者 Chunlin HE, Changsheng LIU, Fengqin LI and Qingkui CAISchool of Materials and Metallurgy, Northeastern University, Shenyang 110004, ChinaZhiming SHI, Liqing CHEN and Jing BIInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2002年第4期351-353,共3页
The corrosion resistance of 2024 Al and SiC particle reinforced 2024 Al metal matrix composite (SiCp?024AI MMC) in 3.5% NaCl solution was investigated with electrochemical method and immersion test, and the corrosion ... The corrosion resistance of 2024 Al and SiC particle reinforced 2024 Al metal matrix composite (SiCp?024AI MMC) in 3.5% NaCl solution was investigated with electrochemical method and immersion test, and the corrosion protection of sulfuric acid anodized coatings on both materials was evaluated by electrochemical impedance spectroscopy. The results showed that the SiCp?024AI MMC is more susceptible to corrosion than its matrix alloy in 3.5% NaCI. For 2024AI, the anodized coating provides excellent corrosion resistance to 3.5% NaCI. The anodized coating on the SiCp?024AI provides satisfactory corrosion protection, but it is not as effective as that for 2024AI because the structure of the anodized layer is affected by the SiC particulates. 展开更多
关键词 2024 Al Metal matrix composite ANODIZING Electrochemical impedance spcctroscopy Potentiodynamic polarization Corrosion resistance
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CHEMICAL AND PHYSICAL CHANGES OF STEAM TREATED WOOD CHIP
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作者 Cai Liping Han Shijie Deng WcipingNortheast Forestry UniversityJia ManrongInstitute of Wood Industry of Heilongjiang Province 《Journal of Northeast Forestry University》 SCIE CAS CSCD 1993年第1期48-52,共5页
High dimensional stable particlcboards could be produced by usisng saturated steam treated wood chip at elevated pressures. Sample Particleboards were made from wood chip of Birch (Platyphylla). The component changes ... High dimensional stable particlcboards could be produced by usisng saturated steam treated wood chip at elevated pressures. Sample Particleboards were made from wood chip of Birch (Platyphylla). The component changes of steam treated wood chip were analysed by infrared. Infrared spectra demonstrated that the hemicelluloses in steam treated chip were less than those in untreated chip. This is one of the main reasons why steam treatment could improve particlcboard stability. The free radical concentration of steam treated chip surfaces was analysed by ESR spcctroscopy. The results showed that free radical concentration of treated chip surface was higher than that of untreated chip surface. The glueyncss of chip increased and particlcboard resin content decreased. 展开更多
关键词 Steam treatment Wood chip INFRARED ESR spcctroscopy
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