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烟台夹河口外柱状沉积物还原性无机硫、活性铁的变化特征及其相互关系 期刊论文 OAI收割
海洋科学, 2018, 卷号: 42, 期号: 8, 页码: 90-97
作者:

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收藏 | 浏览/下载：26/0 | 提交时间：2020/07/08

还原性无机硫活性铁深层柱状沉积物硫化度矿化度 Reduced inorganic sulfur Reactive iron Deep core sediments Degree of pyritization Degree of sulfidity The distribution characteristics and coupling mechanism of reduced inorganic sulfur (RIS)and reactive iron in marine core sediments are closely related to the evolution of environment quality.In this study,an improved cold diffusion method and hydrochloric acid extraction method were applied to the acid-volatile sulfur (AVS),pyrite sulfur (CRS),elemental sulfur (ES),and reactive iron [Fe (Ⅱ)and Fe (III)] analyses.The distribution characteristics and coupling mechanism of S and Fe were investigated based on a core sediment 4 meters deep collected in the northern sea area of the mouth of Jiahe River,Yantai.The results showed that the RIS in sediments was dominated by CRS,followed by AVS and ES.The content of AVS presented a narrow range with depth,whereas the CRS and ES were higher at the top and bottom layers than the middle layer reactive iron was dominated by Fe (II),which increased with depth,while Fe (Ⅲ)gradually decreased with depth.Most of the Fe (III)was reduced to the disssolved Fe(II),which was combined with the soluble H_2S of the sulfate-reducing bacteria to produce CRS and ES in the deep layer,resulting in their accumulation at the bottom of core sediments.Furthermore,this study showed that reactive iron was not a limiting factor for the accumulation of RIS with lower degree of pyritization and degree of sulfidity.

Effect of Zn Additions on the Oxidation of Cu-2 at.% Al and Cu-4 at.% Al Alloys in 1 atm O(2) at 800 A degrees C 期刊论文 OAI收割
Oxidation of Metals, 2009, 卷号: 71, 期号: 1-2, 页码: 43-61
F. Gao; F. Gesmundo; Y. Niu

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Third-element effect Oxidation Cu-Zn-Al Alloys most-reactive component intermediate oxidant pressures alpha-solid-solutions external oxidation ternary alloys internal oxidation transition copper diffusion kinetics

The effect of Si additions on the high temperature oxidation of a ternary Ni-10Cr-4Al alloy in 1 atm O(2) at 1100 degrees C 期刊论文 OAI收割
Corrosion Science, 2009, 卷号: 51, 期号: 3, 页码: 511-517
S. Wang; Y. Wu; C. S. Ni; Y. Niu

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Alloy Nickel Oxidation most-reactive components internal oxidation external oxidation oxidant pressures transition

Accelerated corrosion of Fe-xCr-10Al alloys containing 0-20 at.% Cr induced by sulfur and chlorine in a reducing atmosphere at 600 degrees C 期刊论文 OAI收割
Oxidation of Metals, 2008, 卷号: 69, 期号: 1-2, 页码: 63-76
W. M. Lu; T. J. Pan; Y. Niu

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Fe-xCr-10Al oxidation chlorine and sulfur effect high-oxidant pressures al-y alloys high-temperature corrosion most-reactive components internal oxidation hydrogen-chloride external oxidation ternary alloys iron oxygen

The nature of the third-element effect in the oxidation of Fe-xCr-3 at.% Al alloys in 1 atm O-2 at 1000 degrees C 期刊论文 OAI收割
Corrosion Science, 2008, 卷号: 50, 期号: 2, 页码: 345-356
Y. Niu; S. Wang; F. Gao; Z. G. Zhang; F. Gesmundo

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Fe-Al alloys oxidation chromium effect high-temperature oxidation high-oxidant pressures iron-aluminum-alloys fe-cr-al most-reactive components internal oxidation external oxidation ternary alloys gamma-iron y alloys

The effect of Si additions on the high-temperature oxidation of a ternary Ni-10Cr-4Al alloy in 1 ATM O(2) AT 900-1000 degrees C 期刊论文 OAI收割
Oxidation of Metals, 2008, 卷号: 69, 期号: 5-6, 页码: 299-315
S. Wang; Y. Wu; F. Gesmundo; Y. Niu

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Ni-Cr-Si-Al alloys oxidation third-element effect intermediate oxidant pressures most-reactive components 1200 degrees c internal oxidation external oxidation transition at.percent silicon x=0

High temperature oxidation behavior of Cu-50Cr two-phase contact material 期刊论文 OAI收割
RARE METAL MATERIALS AND ENGINEERING, 2008, 卷号: 37, 期号: 6, 页码: 1078-1080
作者: Zhang Xuejun; Gao Chunxiang; Sun Ling; Wang Shuju

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收藏 | 浏览/下载：8/0 | 提交时间：2021/02/02

MOST-REACTIVE COMPONENT BINARY-ALLOYS CU-20NI-30CR CORROSION VACUUM O-2 Cu-50Cr contact materials high temperature oxidation melt seep method

Internal attack of Fe-xCr-10Al alloys induced by the presence of chlorine and sulfur in a reducing atmosphere at 973 K 期刊论文 OAI收割
Scripta Materialia, 2007, 卷号: 57, 期号: 2, 页码: 97-100
T. J. Pan; Y. Niu

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Fe-xCr-10Al alloys internal attack Cl and S effect most-reactive components high-oxidant pressures high-temperature corrosion behavior external oxidation ternary alloys iron chloridation transition chromium

The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C 期刊论文 OAI收割
Corrosion Science, 2006, 卷号: 48, 期号: 1, 页码: 40930
Y. Niu; Y. Wu; F. Gesmundo

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ternary alloys Ni-Si-Al oxidation silicon effect most-reactive component low oxidant pressures ni-al alloys coupled internal oxidation high-temperature oxidation nickel-aluminum alloys 2-phase binary-alloys ternary alloys external scale si alloys

The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O-2 at 900-1000 degrees C 期刊论文 OAI收割
Corrosion Science, 2006, 卷号: 48, 期号: 12, 页码: 4020-4036
Y. Niu; X. J. Zhang; Y. Wu; F. Gesmundo

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ternary alloys Ni-Cr-Al oxidation third-element effect cr-al alloys most-reactive component high oxidant pressures internal oxidation ternary alloys external oxidation high-temperature protective scales aluminum alloys binary-alloys