Quanmin YANG
,
Yongquan LEI+
,
Changpin CHEN
,
Jing WU
,
Qidong WANG
,
Dept. of Mater. Sci. and Eng.
,
Zhejiang Univresity
,
Hangzhou
,
310027
,
China
材料科学技术（英文）
The thermal stability of amorphous ternary hydrides Mg_(50)Ni_(50)H_(54) and Mg_(30)Ni_(70)H_(45) and their corre- sponding amorphous binary alloys Mg_(50)Ni_(50) and Mg_(30)Ni_(70) were studied with X-ray diffraction (XRD) and differential scanning calorimetry(DSC). Samples of the amorphous alloys were prepared by mechanical alloying and the amorphous hydrides were obtained by charging the alloys with gas- eous hydrogen at 3.0 MPa and 423 K. It was found that the amorphous hydrides released most of their hydrogen before the crystallization of the essentially hydrogen depleted amorphous alloy. The crystallization temperature of amorphous Mg_(50)Ni_(50)H_(54) elevated and that of amorphous Mg_(30)Ni_(70)H_(45) did not change in relation to the original binary amorphous alloy. This is very excep- tional for amorphous hydrides. The reason for the effects of hydrogen absorption/desorption on the crystallization of amorphous alloys was discussed.
关键词:
amorphous hydride
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null
,
null
,
null
Chenguang GONG+
,
Fuchu SHEN
,
Biguang YE
,
Jian CHEN
,
Zhenjiang University
,
Hangzhou
,
310027
,
China
材料科学技术（英文）
This article discusses the silicon lattice damage induced during H-plasma in-situ cleaning and finds that the substrate temperature, plasma power, processing time, all affect the extent of the distortion of the surface and its curability.
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H-plasma cleaning
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null
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null
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null
林薇薇
中国腐蚀与防护学报
聚脲聚氨酯环氧涂料用於混凝土钢筋防腐蚀的研究林薇薇（浙江大学高分子系杭州３１００２７）钢筋混凝土建筑物耐久性下降的主要原因之一是增强钢筋的腐蚀。因为混凝土是多孔性凝胶体，空气中的氧、湿气和其它腐蚀介质能通过孔隙和细裂缝侵蚀钢筋，而钢筋变成铁锈时体积要增大２～４倍，结果产生内应力，使混凝土开裂，又进一步加剧腐蚀，造成钢筋混凝土构件破损失效。为此，目前已采用一些方法来减缓钢筋的腐蚀速度［１］。钢?...
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null
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Epoxy；Polyurea
,
Polyurethane
,
Concrete
涂江平
,
李志章
,
毛志远
中国腐蚀与防护学报
Ｎｉ－１３Ｃｒ－０．５Ｃｅ合金在５７５℃Ｃｌ_２－Ｈ_２Ｏ混合气氛中的腐蚀行为涂江平，李志章，毛志远（浙江大学杭州３１００２７）１引言关于合金在干氯气或含氯的氯化气氛中的腐蚀行为已有报导［１～３］，而在实际生产中，液氯经雾化后往往存在少量水份，使腐蚀环境变得复杂，尤其在高温下腐蚀条件进一步恶化［４］．高温氯气环境中少量水蒸气的存在对合金腐蚀行为的影响是复杂的．在５５０℃以下时水蒸气会加速镍基合?...
关键词:
null
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Internal chlorination
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Ni-Cr alloy
涂江平
,
毛志远
,
李志章
中国腐蚀与防护学报
Ｎｉ－Ｃｒ－Ｃｅ合金经７００℃空气预氧化后在高温氯气中的腐蚀行为涂江平，毛志远，李志章（浙江大学杭州３１００２７）改善合金在高温含卤素气氛中的抗腐蚀性能，可以由形成和维持化学性质稳定、结合强度高和完整性好的表面膜来实现［１］．然而在较高氯分压的高温环境中Ｎｉ－Ｃｒ合金表面所形成的腐蚀膜难以具有保护作用，不能有效地阻碍Ｃ１２的继续侵蚀，因而使合金表现出很高的腐蚀速度．采用预氧化工艺使合金表面形?...
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