The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Juanjuan Gong - One of the best experts on this subject based on the ideXlab platform.
-
Influence of Salt Spray corrosion on subsequent isothermal oxidation behaviours of AIP NiCoCrAlYSiB coatings
Corrosion Science, 2008Co-Authors: Qisheng Wang, S.m. Jiang, Juanjuan GongAbstract:The influence of Salt Spray corrosion on subsequent oxidation behaviours of arc ion plated (AIP) NiCoCrAlYSiB coatings is investigated in this work. The results indicate impact of the Salt Spray corrosion on successive oxidation behaviour depends greatly on the degree of the previous corrosion attack. Accelerated oxidation kinetics and unsatisfactory oxide morphologies are observed on the as-deposited and as-annealed NiCoCrAlYSiB coatings that suffered serious Salt Spray attacks. Pre-oxidised coatings prove excellent performances during both Salt Spray tests and the subsequent oxidations. The mechanism of the corrosion attack influencing the isothermal oxidation behaviour is discussed. (C) 2008 Elsevier Ltd. All rights reserved.
-
Influence of Salt Spray corrosion on subsequent isothermal oxidation behaviours of AIP NiCoCrAlYSiB coatings
Corrosion Science, 2008Co-Authors: Qisheng Wang, S.m. Jiang, Juanjuan GongAbstract:The influence of Salt Spray corrosion on subsequent oxidation behaviours of arc ion plated (AIP) NiCoCrAlYSiB coatings is investigated in this work. The results indicate impact of the Salt Spray corrosion on successive oxidation behaviour depends greatly on the degree of the previous corrosion attack. Accelerated oxidation kinetics and unsatisfactory oxide morphologies are observed on the as-deposited and as-annealed NiCoCrAlYSiB coatings that suffered serious Salt Spray attacks. Pre-oxidised coatings prove excellent performances during both Salt Spray tests and the subsequent oxidations. The mechanism of the corrosion attack influencing the isothermal oxidation behaviour is discussed. (C) 2008 Elsevier Ltd. All rights reserved.
-
Corrosion behaviour of AIP NiCoCrAlYSiB coating in Salt Spray tests
Corrosion Science, 2008Co-Authors: Zebin Bao, Juanjuan Gong, Qinqin Wang, Tianying Xiong, Congting SunAbstract:Abstract NiCoCrAlYSiB coatings were deposited by arc ion plating (AIP) and annealed/pre-oxidised under various conditions. The corrosion behaviour of as-deposited and annealed/pre-oxidised coatings was studied by Salt Spray testing in a neutral mist of 5 wt% NaCl at 35 °C for 200 h. The results showed that the as-deposited NiCoCrAlYSiB coating behaved poorly while the annealed and pre-oxidised ones performed much better in Salt Spray tests. The dense microstructure in annealed coatings and formation of α-Al 2 O 3 scales on the surface during pre-oxidation improved the corrosion resistance in Salt Spray test. The corrosion process was investigated from the aspects of corrosion products, and its electrochemical mechanism was proposed as well.
Colin M. Orians - One of the best experts on this subject based on the ideXlab platform.
-
Direct and indirect effects of Salt Spray and fire on coastal heathland plant physiology and community composition
Rhodora, 2006Co-Authors: Megan E. Griffiths, Robin P. Keith, Colin M. OriansAbstract:Coastal sandplain heathlands are managed largely by prescribed burning. While it is known that Salt Spray is an important natural disturbance contributing to the maintenance of coastal heathlands, it is unclear whether fire in coastal areas intensifies the detrimental effects of Salt Spray on plants growing close to the ocean. We carried out a field experiment to test the interactive effects of fire and Salt Spray on Martha's Vineyard, Massachusetts. Following a prescribed fire, one-meter-square plots were established in burned and unburned areas and randomly assigned a control or Salt Spray treatment. After ten weeks of Spray treatments we found that burning stimulated new growth and Salt Spray consistently increased plant water stress, increased leaf necrosis, and inhibited shoot elongation. Burning did not increase the negative effects of Salt Spray in individual plants; Salt Spray and control treated plants growing in burned areas showed less water stress and leaf necrosis than those in unburned areas. This may be due to increased water availability in the burned area resulting from lower biomass and therefore lower competition for water and lower evapotranspiration rates. Burning reduced plant canopy height, decreased vascular plant species richness, and stimulated new growth in plants. Our results suggest that fire indirectly reduces the damaging effects of Salt Spray by increasing soil water availability and decreasing plant water stress.
-
Salt Spray effects on forest succession in rare coastal sandplain heathlands: evidence from field surveys and Pinus rigida transplant experiments'
Journal of the Torrey Botanical Society, 2004Co-Authors: Megan E. Griffiths, Colin M. Orians, M E GriffithsAbstract:GRIFFITHS M. E. AND C. M. ORIANS (Department of Biology, Tufts University, Medford, MA 02155). Salt Spray effects on forest succession in rare coastal sandplain heathlands: evidence from field surveys and Pinus rigida transplant experiments. J. Torrey Bot. Soc. 131: 23-31. 2004.-Coastal sandplain heathland is a rare ecosystem maintained by recurrent disturbances and chronic abiotic stress. In areas with low disturbance or stress, heathland communities are succeeded by tree species, such as Pinus rigida, that outcompete native heathland plants. We propose that Salt Spray is an important natural abiotic stress factor that helps to maintain heathlands near the coast by slowing tree succession. We investigated whether Salt Spray inhibits succession in heathlands on Martha's Vineyard, Massachusetts, by surveying natural field distributions of species and by quantifying the survival and growth of P rigida seedlings transplanted at different distances from the ocean. Tree species did not grow in areas with high Salt Spray and multivariate analyses identified Salt Spray as an important ecological factor influencing species distributions in coastal heathlands. Although transplanted P. rigida seedlings exhibited low mortality close to the ocean, they exhibited higher water stress and needle necrosis as well as inhibition of growth, suggesting that Salt Spray may be important in suppressing trees close to the
-
Responses of common and successional heathland species to manipulated Salt Spray and water availability
American journal of botany, 2003Co-Authors: Megan E. Griffiths, Colin M. OriansAbstract:Coastal sandplain heathlands are a rare plant community in the northeastern United States. Salt Spray and water availability are likely important factors determining heathland distribution. Field surveys and manipulative experiments were performed to examine heathland species' responses to Salt Spray and water availability. We surveyed field distributions of four typical heathland species: Solidago puberula, Solidago rugosa, Gaylussacia baccata, and Myrica pensylvanica. The distributions of two native tree species, Pinus rigida and Quercus ilicifolia, were also surveyed because they succeed into coastal heathlands with low disturbance frequency. We then manipulated Salt Spray and water in the field and measured species' water status, necrosis, and growth responses to the treatments. Predawn xylem pressure potential and necrosis were strongly affected by high Salt Spray and low water availability. Shoot elongation was also limited in S. puberula and S. rugosa grown in high Salt, low water treatments. Gaylussacia baccata and Q. ilicifolia were particularly sensitive to high Salt Spray and low water, suggesting that they might excluded be from areas with those conditions. The interaction between Salt Spray and water availability could affect the landscape scale and should be incorporated into conservation management plans.
-
Salt Spray differentially affects water status, necrosis, and growth in coastal sandplain heathland species.
American journal of botany, 2003Co-Authors: Megan E. Griffiths, Colin M. OriansAbstract:Sandplain heathlands are disturbance-dependent plant communities that occur infrequently in coastal areas of the northeastern United States. We hypothesize that Salt Spray plays a role in maintaining the composition of the heathland community by excluding Salt-intolerant species close to the ocean. We examined the distributions of Solidago nemoralis, Myrica pensylvanica, Pinus rigida, and Quercus spp. in heathlands and conducted greenhouse studies to determine whether different levels of Salt Spray tolerance explain patterns found in the field. We found that common heathland forb and shrub species grow closer to the ocean than successional woody species. In greenhouse experiments, these species differ in their water status, necrosis, and growth responses to Salt Spray. The tree species P. rigida and Q. rubra are more susceptible to Salt Spray than the common heathland species M. pensylvanica. Our results suggest that Salt Spray may prevent tree species in heathlands from growing close to the ocean and therefore might be an important factor in maintaining the characteristic community composition of these dwarf shrublands in coastal habitats.
Qisheng Wang - One of the best experts on this subject based on the ideXlab platform.
-
Influence of Salt Spray corrosion on subsequent isothermal oxidation behaviours of AIP NiCoCrAlYSiB coatings
Corrosion Science, 2008Co-Authors: Qisheng Wang, S.m. Jiang, Juanjuan GongAbstract:The influence of Salt Spray corrosion on subsequent oxidation behaviours of arc ion plated (AIP) NiCoCrAlYSiB coatings is investigated in this work. The results indicate impact of the Salt Spray corrosion on successive oxidation behaviour depends greatly on the degree of the previous corrosion attack. Accelerated oxidation kinetics and unsatisfactory oxide morphologies are observed on the as-deposited and as-annealed NiCoCrAlYSiB coatings that suffered serious Salt Spray attacks. Pre-oxidised coatings prove excellent performances during both Salt Spray tests and the subsequent oxidations. The mechanism of the corrosion attack influencing the isothermal oxidation behaviour is discussed. (C) 2008 Elsevier Ltd. All rights reserved.
-
Influence of Salt Spray corrosion on subsequent isothermal oxidation behaviours of AIP NiCoCrAlYSiB coatings
Corrosion Science, 2008Co-Authors: Qisheng Wang, S.m. Jiang, Juanjuan GongAbstract:The influence of Salt Spray corrosion on subsequent oxidation behaviours of arc ion plated (AIP) NiCoCrAlYSiB coatings is investigated in this work. The results indicate impact of the Salt Spray corrosion on successive oxidation behaviour depends greatly on the degree of the previous corrosion attack. Accelerated oxidation kinetics and unsatisfactory oxide morphologies are observed on the as-deposited and as-annealed NiCoCrAlYSiB coatings that suffered serious Salt Spray attacks. Pre-oxidised coatings prove excellent performances during both Salt Spray tests and the subsequent oxidations. The mechanism of the corrosion attack influencing the isothermal oxidation behaviour is discussed. (C) 2008 Elsevier Ltd. All rights reserved.
Shuhui Huang - One of the best experts on this subject based on the ideXlab platform.
-
Corrosion Behavior of Pressure Infiltration Diamond/Cu Composites in Neutral Salt Spray.
Materials (Basel Switzerland), 2020Co-Authors: Zhongnan Xie, Hong Guo, Ximin Zhang, Shuhui HuangAbstract:Diamond particle-reinforced copper matrix composites (Diamond/Cu) are recognized as promising electronic packaging materials due to their excellent thermophysical properties. It is necessary to investigate the reliability of Diamond/Cu composites under extreme environmental conditions. The corrosion behavior of Diamond/Cu composites was studied in a 5 wt% NaCl neutral Salt Spray. Surface morphology, thermal conductivity, bending strength, corrosion rate, and corrosion depth resulting from corrosion were researched in this paper. The results showed that the corrosion phenomenon mainly occurs on the copper matrix, and the diamond and interface products do not corrode. The corrosion mechanism of Diamond/Cu composites was micro-galvanic corrosion. The corrosion product formed was Cu2Cl(OH)3. The Salt Spray environment had a great influence on the composite surface, but the composite properties were not significantly degenerated. After a 168-h test, the bending strength was unaltered and the thermal conductivity of gold-plated composites showed a slight decrease of 1–2%. Surface gold plating can effectively improve the surface state and thermal conductivity of Diamond/Cu composites in a Salt Spray environment.
-
corrosion behavior of pressure infiltration diamond cu composites in neutral Salt Spray
Materials, 2020Co-Authors: Zhongnan Xie, Hong Guo, Ximin Zhang, Shuhui HuangAbstract:Diamond particle-reinforced copper matrix composites (Diamond/Cu) are recognized as promising electronic packaging materials due to their excellent thermophysical properties. It is necessary to investigate the reliability of Diamond/Cu composites under extreme environmental conditions. The corrosion behavior of Diamond/Cu composites was studied in a 5 wt% NaCl neutral Salt Spray. Surface morphology, thermal conductivity, bending strength, corrosion rate, and corrosion depth resulting from corrosion were researched in this paper. The results showed that the corrosion phenomenon mainly occurs on the copper matrix, and the diamond and interface products do not corrode. The corrosion mechanism of Diamond/Cu composites was micro-galvanic corrosion. The corrosion product formed was Cu2Cl(OH)3. The Salt Spray environment had a great influence on the composite surface, but the composite properties were not significantly degenerated. After a 168-h test, the bending strength was unaltered and the thermal conductivity of gold-plated composites showed a slight decrease of 1–2%. Surface gold plating can effectively improve the surface state and thermal conductivity of Diamond/Cu composites in a Salt Spray environment.
Megan E. Griffiths - One of the best experts on this subject based on the ideXlab platform.
-
Salt Spray Accumulation and Heathland Plant Damage Associated with a Dry Tropical Storm in Southern New England
Journal of Coastal Research, 2006Co-Authors: Megan E. GriffithsAbstract:Abstract Tropical cyclonic storm systems can have profound impacts on coastal plant communities both through direct mechanical damage and indirect factors, such as flooding or Salt Spray. Storms with high wind and low rainfall are especially likely to cause high Salt Spray accumulation on plants growing in close proximity to the ocean. I measured Salt Spray accumulation on a common coastal heathland plant species, Myrica pensylvanica, during normal growing-season conditions and following Tropical Storm Floyd. At both sampling times, Salt Spray accumulation was highest in areas closest to the ocean and Salt decreased as distance from the ocean increased. Salt Spray accumulation on leaves following the tropical storm was twice the Salt Spray accumulation during normal growing-season conditions. I also found higher necrosis on leaves following the tropical storm, particularly at distances farther from the ocean. These results suggest that even minor cyclonic storms could have an impact on coastal plants in N...
-
Salt Spray and edaphic factors maintain dwarf stature and community composition in coastal sandplain heathlands
Plant Ecology, 2006Co-Authors: Megan E. GriffithsAbstract:North American coastal sandplain heathlands are unique in species composition and vegetation, but the extent to which edaphic factors influence the structure of these communities is currently debated. It was hypothesized that Salt Spray and edaphic factors maintain the dwarf stature and community composition of heathlands by limiting plant growth and excluding competitively dominant woody species close to the ocean. Field surveys were carried out to investigate the spatial patterns of Salt Spray accumulation, soil Salt and soil moisture. High Salt Spray correlated significantly with increased leaf necrosis and water stress in Myrica pensylvanica and with decreased plant height. Plant community composition changed across a Salt Spray and soil gradient, as well. Distinctive sub-communities were identified that separated according to soil Salt and soil moisture but Salt Spray was the main factor affecting sites occupied only by heathland vegetation. Results from this study suggest that Salt Spray suppresses the growth of heathland plants in close proximity to the ocean, and therefore maintains the low stature in these dwarf shrublands. This research also demonstrates that the physical environment influences the community structure in heathlands, particularly by limiting tree species from growing in high Salt Spray, low water availability sites.
-
Direct and indirect effects of Salt Spray and fire on coastal heathland plant physiology and community composition
Rhodora, 2006Co-Authors: Megan E. Griffiths, Robin P. Keith, Colin M. OriansAbstract:Coastal sandplain heathlands are managed largely by prescribed burning. While it is known that Salt Spray is an important natural disturbance contributing to the maintenance of coastal heathlands, it is unclear whether fire in coastal areas intensifies the detrimental effects of Salt Spray on plants growing close to the ocean. We carried out a field experiment to test the interactive effects of fire and Salt Spray on Martha's Vineyard, Massachusetts. Following a prescribed fire, one-meter-square plots were established in burned and unburned areas and randomly assigned a control or Salt Spray treatment. After ten weeks of Spray treatments we found that burning stimulated new growth and Salt Spray consistently increased plant water stress, increased leaf necrosis, and inhibited shoot elongation. Burning did not increase the negative effects of Salt Spray in individual plants; Salt Spray and control treated plants growing in burned areas showed less water stress and leaf necrosis than those in unburned areas. This may be due to increased water availability in the burned area resulting from lower biomass and therefore lower competition for water and lower evapotranspiration rates. Burning reduced plant canopy height, decreased vascular plant species richness, and stimulated new growth in plants. Our results suggest that fire indirectly reduces the damaging effects of Salt Spray by increasing soil water availability and decreasing plant water stress.
-
Salt Spray effects on forest succession in rare coastal sandplain heathlands: evidence from field surveys and Pinus rigida transplant experiments'
Journal of the Torrey Botanical Society, 2004Co-Authors: Megan E. Griffiths, Colin M. Orians, M E GriffithsAbstract:GRIFFITHS M. E. AND C. M. ORIANS (Department of Biology, Tufts University, Medford, MA 02155). Salt Spray effects on forest succession in rare coastal sandplain heathlands: evidence from field surveys and Pinus rigida transplant experiments. J. Torrey Bot. Soc. 131: 23-31. 2004.-Coastal sandplain heathland is a rare ecosystem maintained by recurrent disturbances and chronic abiotic stress. In areas with low disturbance or stress, heathland communities are succeeded by tree species, such as Pinus rigida, that outcompete native heathland plants. We propose that Salt Spray is an important natural abiotic stress factor that helps to maintain heathlands near the coast by slowing tree succession. We investigated whether Salt Spray inhibits succession in heathlands on Martha's Vineyard, Massachusetts, by surveying natural field distributions of species and by quantifying the survival and growth of P rigida seedlings transplanted at different distances from the ocean. Tree species did not grow in areas with high Salt Spray and multivariate analyses identified Salt Spray as an important ecological factor influencing species distributions in coastal heathlands. Although transplanted P. rigida seedlings exhibited low mortality close to the ocean, they exhibited higher water stress and needle necrosis as well as inhibition of growth, suggesting that Salt Spray may be important in suppressing trees close to the
-
Responses of common and successional heathland species to manipulated Salt Spray and water availability
American journal of botany, 2003Co-Authors: Megan E. Griffiths, Colin M. OriansAbstract:Coastal sandplain heathlands are a rare plant community in the northeastern United States. Salt Spray and water availability are likely important factors determining heathland distribution. Field surveys and manipulative experiments were performed to examine heathland species' responses to Salt Spray and water availability. We surveyed field distributions of four typical heathland species: Solidago puberula, Solidago rugosa, Gaylussacia baccata, and Myrica pensylvanica. The distributions of two native tree species, Pinus rigida and Quercus ilicifolia, were also surveyed because they succeed into coastal heathlands with low disturbance frequency. We then manipulated Salt Spray and water in the field and measured species' water status, necrosis, and growth responses to the treatments. Predawn xylem pressure potential and necrosis were strongly affected by high Salt Spray and low water availability. Shoot elongation was also limited in S. puberula and S. rugosa grown in high Salt, low water treatments. Gaylussacia baccata and Q. ilicifolia were particularly sensitive to high Salt Spray and low water, suggesting that they might excluded be from areas with those conditions. The interaction between Salt Spray and water availability could affect the landscape scale and should be incorporated into conservation management plans.
