WANG Fuhui
,
LOU Hanyi
,
WU Weitao Corrosion Science Laboratory
,
Institute of Corrosion and Protection of Metals
,
Academia Sinica
,
Shenyang
,
China research assistant
,
Institute of Corrosion and Protection of Metats
,
Academia Sinica
,
Shenyang 110015
,
China
金属学报(英文版)
The influence of defects on the oxidation, hot corrosion and thermal shock properties of sputtered Co-30Cr-6Al-0.5Y coatings was investigated.The results indicated that the nodular defects reduced the properties of the coatings.For the oxidation,the nodular defects resulted in the severe internal oxidation of aluminium,as a result,the pure alu mina scale could not form at very high temperature such as at 1 100℃.For the hot corrosion,the nodular defects served as the short-path for the diffusion of sulfur into the coating and the substrate,and caused the sulfidation,of the specimen.Moreover,the nodular defects became the crack source during the thermal shock test and decreased the thermal shock resistance.
关键词:
CoCrAlY coating
,
null
,
null
,
null
,
null
汪文云
,
张朝晖
黄金
doi:10.3969/j.issn.1001-1277.2008.06.003
通过对贵州水银洞卡林型金矿苔藓植物野外全面调查,发现贵州水银洞金矿共有苔藓植物15科42属102种,其中苔类植物4科4属5种,藓类植物10科37属96种,角苔类植物1科1属1种. 短柄小曲尾藓Dicranella gonoi Card.、纤毛丝瓜藓Pohlia hisaet. Kop et J.S.Lou、纤枝短月藓Brachymenium exile (Doz.et.Molk) Bosch et Lac.、真藓Bryum argenteum Hedw.为该矿区裸地大量生长的种类,可利用它们作为金属矿山生态恢复进一步研究的素材.通过与露天开采的金矿区苔藓植物丰富度比较,埋藏型金矿区的苔藓植物较露天开采的金矿区的丰富.该区苔藓植物区系地理成分共9种,世界广布和中国特有分布占主要优势(各22种,都占21.57%),其次是东亚成分(共17种,都占16.67%),再次为热带亚洲成分(共16种,都占15.69%).
关键词:
苔藓植物
,
丰富度指数
,
区系
,
水银洞卡林型金矿
