M. Futamata, H. Itoh, K. Nakanishi, N. Kuramoto, Y. Kamoshita, A. Shindoh, Michio Saitoh, Mitsuaki Yamada
The sprayed coating containing fl uorine-carbon showed high water repellency (the contact angle for water droplet was 145°). However, the water repellency of the sprayed coating decreased with adsorption of organic materials, NOx, and SOx, which discharged from the automobile. To remove the adsorption compounds from the coating surface, we decide to add titanium oxide (TiO2) in the coating, which could be able to oxidize the surface adsorption compounds photo-catalytically. It was found that the particles dispersion type sprayed coatings prepared by fl ame spray technique using aluminum tubing fi lling with fl uorine-carbon (15.2mass%) and titanium oxide (0.5mass%) had high photo-catalytic activity for liquid phase decomposition of methylene blue without decreasing waterrepellency.
{"title":"Development of Particles Dispersion Type Sprayed Coatings with Water-Repellency and Photo-Catalytic Activity","authors":"M. Futamata, H. Itoh, K. Nakanishi, N. Kuramoto, Y. Kamoshita, A. Shindoh, Michio Saitoh, Mitsuaki Yamada","doi":"10.7791/JHTS.32.343","DOIUrl":"https://doi.org/10.7791/JHTS.32.343","url":null,"abstract":"The sprayed coating containing fl uorine-carbon showed high water repellency (the contact angle for water droplet was 145°). However, the water repellency of the sprayed coating decreased with adsorption of organic materials, NOx, and SOx, which discharged from the automobile. To remove the adsorption compounds from the coating surface, we decide to add titanium oxide (TiO2) in the coating, which could be able to oxidize the surface adsorption compounds photo-catalytically. It was found that the particles dispersion type sprayed coatings prepared by fl ame spray technique using aluminum tubing fi lling with fl uorine-carbon (15.2mass%) and titanium oxide (0.5mass%) had high photo-catalytic activity for liquid phase decomposition of methylene blue without decreasing waterrepellency.","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133156202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Kuramoto, Y. Kamoshita, A. Shindo, H. Otomo, Shuji Sugano, M. Futamata
{"title":"Development of Compound Wire Spraying Method and Ceramic Grain Dispersion Type Metal Matrix Composite (MMC) Coating","authors":"N. Kuramoto, Y. Kamoshita, A. Shindo, H. Otomo, Shuji Sugano, M. Futamata","doi":"10.7791/JHTS.37.240","DOIUrl":"https://doi.org/10.7791/JHTS.37.240","url":null,"abstract":"","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127657715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Tanaka, F. Akamatsu, Seung-Mo Kim, M. Katsuki, T. Majima
{"title":"Visualization of Fuel Vapor in Inter-Droplet Space by Excited-Molecular Fluorescence","authors":"Y. Tanaka, F. Akamatsu, Seung-Mo Kim, M. Katsuki, T. Majima","doi":"10.7791/JHTS.30.213","DOIUrl":"https://doi.org/10.7791/JHTS.30.213","url":null,"abstract":"","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"5 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124159232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of W/O Emulsion Fuel Properties on Spray Combustion","authors":"T. Ida, M. Fuchihata, S. Takeda","doi":"10.7791/JHTS.31.57","DOIUrl":"https://doi.org/10.7791/JHTS.31.57","url":null,"abstract":"","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115000239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new type of circulating fluidized bed gasifier was proposed. The main features of this proposed gasifier are the adoption of a triple-beds structure (comprising pyrolyzer, gasifier, and combustor), the separation of a circulation path for tar-absorbing material and that for the fuel and silica sand. Independent circulation systems are employed for the fuel system and for the tar-absorbing particles, and the pyrolyzer and gasifier each have a two-stage fluidized bed: the lower stage is for the fuel system and the upper stage is for the tar-absorbing system. The two circulation systems each have an independent combustor. This new gasifier is called “a fluidized bed gasifier with triple-beds and dual circulation”. The objectives of this work are to clarify the operation characteristics by using a laboratory-scale cold model. As a result, the stable circulation of the particle in upper and lower stages was able to be verified. Additionally, a wide range of the particle circulation rate, which contains the target value, was obtained. The particle circulation rate can be arranged by pressure drop of riser.
{"title":"Operation Characteristics in a Fluidized Bed Gasifier with Triple-beds and Dual Circulation","authors":"T. Murakami, Minoru Asai, Yoshizo Suzuki","doi":"10.7791/JHTS.37.87","DOIUrl":"https://doi.org/10.7791/JHTS.37.87","url":null,"abstract":"A new type of circulating fluidized bed gasifier was proposed. The main features of this proposed gasifier are the adoption of a triple-beds structure (comprising pyrolyzer, gasifier, and combustor), the separation of a circulation path for tar-absorbing material and that for the fuel and silica sand. Independent circulation systems are employed for the fuel system and for the tar-absorbing particles, and the pyrolyzer and gasifier each have a two-stage fluidized bed: the lower stage is for the fuel system and the upper stage is for the tar-absorbing system. The two circulation systems each have an independent combustor. This new gasifier is called “a fluidized bed gasifier with triple-beds and dual circulation”. The objectives of this work are to clarify the operation characteristics by using a laboratory-scale cold model. As a result, the stable circulation of the particle in upper and lower stages was able to be verified. Additionally, a wide range of the particle circulation rate, which contains the target value, was obtained. The particle circulation rate can be arranged by pressure drop of riser.","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117089837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of Heat-Treatment on Metallic Collection for Used Printed Circuit Board","authors":"R. Agawa, Y. Tsugita, M. Nishida, T. Araki","doi":"10.7791/JHTS.30.62","DOIUrl":"https://doi.org/10.7791/JHTS.30.62","url":null,"abstract":"","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129530361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Uematsu, K. Tani, S. Sugasawa, Y. Kawanami, Y. Namba, Tsuyoshi Takabatake, M. Yoshioka, Y. Ishihara
The microstructure of plasma sprayed ceramic coatings is characterized by the existence of splats along with other morphological features such as interlamellar and globular pores, intrasplat microcracks and splat boundaries. These various process-dependant microdefects extremely influence physical and mechanical properties such as thermal conductivity and elastic modulus and then influence coating behavior. In this approach, the process involved in the cavitation erosion of plasma sprayed ceramic coatings have been studied using the ultrasonic vibratory technique. The weight loss occurring during fifteen minute intervals of exposure to cavitational erosion was determined, the surface of specimens and the wear debris were examined by Scanning electron microscopy (SEM) . The results suggest that the improvement in coating performance could be achieved by controlling the effective contact between lamellae of which the coating is made up using the plasma spray conditions, such as sufficient preheat, short standoff distance and slow gun traversing movement.
{"title":"Morphological Evaluation of Plasma Sprayed Ceramic Coatings using Cavitation Erosion Test","authors":"S. Uematsu, K. Tani, S. Sugasawa, Y. Kawanami, Y. Namba, Tsuyoshi Takabatake, M. Yoshioka, Y. Ishihara","doi":"10.7791/JHTS.37.298","DOIUrl":"https://doi.org/10.7791/JHTS.37.298","url":null,"abstract":"The microstructure of plasma sprayed ceramic coatings is characterized by the existence of splats along with other morphological features such as interlamellar and globular pores, intrasplat microcracks and splat boundaries. These various process-dependant microdefects extremely influence physical and mechanical properties such as thermal conductivity and elastic modulus and then influence coating behavior. In this approach, the process involved in the cavitation erosion of plasma sprayed ceramic coatings have been studied using the ultrasonic vibratory technique. The weight loss occurring during fifteen minute intervals of exposure to cavitational erosion was determined, the surface of specimens and the wear debris were examined by Scanning electron microscopy (SEM) . The results suggest that the improvement in coating performance could be achieved by controlling the effective contact between lamellae of which the coating is made up using the plasma spray conditions, such as sufficient preheat, short standoff distance and slow gun traversing movement.","PeriodicalId":113412,"journal":{"name":"Journal of High Temperature Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129755993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：