http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Corrosion studies on Fe-based amorphous alloys in simulated PEM fuel cell environment
Jayaraj, J.,Kim, Y.C.,Kim, K.B.,Seok, H.K.,Fleury, E. Elsevier 2005 Science and Technology of Advanced Materials Vol. No.
<P><B>Abstract</B></P><P>In this paper, we introduce a novel idea of using metallic amorphous material as a bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). The major requirement of the metallic bipolar plate material is their high corrosion resistance. Owing to its chemical homogeneity, and absence of defects (like grain boundaries, dislocations, etc.), amorphous materials exhibit a combination of attractive properties for bipolar plates such as high corrosion resistance and high strength (∼ about 2GPa). The corrosion properties of Fe<SUB>48</SUB>Cr<SUB>15</SUB>Mo<SUB>14</SUB>Y<SUB>2</SUB>C<SUB>15</SUB>B<SUB>6</SUB> and of a newly developed Fe<SUB>50</SUB>Cr<SUB>18</SUB>Mo<SUB>8</SUB>Al<SUB>2</SUB>Y<SUB>2</SUB>C<SUB>14</SUB>B<SUB>6</SUB> bulk metallic amorphous alloys have been investigated under conditions that simulate the fuel cell environment and are compared with those of a stainless steel. Hydrogen gas and pressurized air were bubbled into a 1M H<SUB>2</SUB>SO<SUB>4</SUB>+2ppm F<SUP>−</SUP> solution at 75°C solution, throughout the experiment to simulate the respective anodic and cathodic PEMFC environment. In comparison to the stainless steel, the Fe<SUB>50</SUB>Cr<SUB>18</SUB>Mo<SUB>8</SUB>Al<SUB>2</SUB>Y<SUB>2</SUB>C<SUB>14</SUB>B<SUB>6</SUB> amorphous alloy displays significantly higher corrosion resistance.</P>
Development of metallic glasses for bipolar plate application
Jayaraj, J.,Kim, Y.C.,Seok, H.K.,Kim, K.B.,Fleury, E. Elsevier 2007 Materials science & engineering. properties, micro Vol.449 No.-
<P><B>Abstract</B></P><P>Fe- and Ni-base amorphous alloys were developed and characterized as alternative bipolar plate materials for polymer electrolyte membrane fuel cell (PEMFC). Lower interfacial contact resistances were obtained for the Fe-base in comparison with Ni-base alloys and particularly the N-containing Fe-base amorphous composition exhibited values almost comparable to that of stainless steel upon high compaction load. Under conditions simulating the anodic and cathodic PEMFC environments, both the Fe- and Ni-base amorphous alloys displayed higher corrosion resistance than stainless steel.</P>
Jayaraj, J.,Kim, K.B.,Ahn, H.S.,Fleury, E. Elsevier 2007 Materials science & engineering. properties, micro Vol.449 No.-
<P><B>Abstract</B></P><P>The Fe<SUB>49</SUB>Cr<SUB>15.3</SUB>Mo<SUB>15</SUB>Y<SUB>2</SUB>C<SUB>15</SUB>B<SUB>3.4</SUB>N<SUB>0.3</SUB> (numbers indicate at.%) amorphous alloy in concentrated HCl solution was found to have a corrosion resistance of at least one order of magnitude higher than the N-free Fe-base amorphous alloy. X-ray photoelectron spectroscopy analyses were performed to understand the corrosion mechanism. It was found that the enrichment of Cr oxide and the presence of MoN nitrides on the surface in the passive layer were at the origin of the high corrosion resistance of the N-containing Fe-base amorphous alloy.</P>
Latha, K. Lavanya,Rao, T.V.S.S.,Rao, J. V. Krishna,Jayaraj, S.,Reddy, N. Sivarami,Naik, S. Sankar Korean Society of Sericultural Science 2008 International Journal of Industrial Entomology Vol.17 No.2
A field study on self trap cropping system in controlling tukra mealy bug Maconellicoccus hirsutus Green) incidence on mulberry (Morus spp.; V-1 variety; $3'{\times}3'$ spacing) gardens was undertaken in selected sericulture farmers' mulberry gardens of Pydeti village (Parigi Mandal, Anantapur District, Andhra Pradesh, India). The study was conducted for three years (2004, 2005 and 2006). Four treatments (T0; control/no treatment, T1; self trap cropping rows with 10 row interval, T2; self trap cropping rows with 10 row interval and treating these rows only with 0.5% neem oil emulsion and T3; self trap cropping rows with 10 rows intervals and treating all the mulberry rows including self trap cropping rows with 0.5% neem oil emulsion) were considered. The results indicated that the incidence increased in T0 and T1 while the same suppressed in T2 and T3. The suppression (%) of tukra incidence between T2 and T3 was not significant. Hence, T2 only was recommended to farmers as its economical viable practice. The results are discussed based on the importance of tukra, its suppression and cost of treatment.
( K. Lavanya Latha ),( T. V. S. S. Rao ),( J. V. Krishna Rao ),( S. Jayaraj ),( N. Sivarami Reddy ),( S. Sankar Naik ) 한국잠사학회 2008 International Journal of Industrial Entomology Vol.17 No.2
A field study on self trap cropping system in controlling tukra mealy bug Maconellicoccus hirsutus Green) incidence on mulberry (Morus spp.; V-1 variety; 3`x3` spacing) gardens was undertaken in selected sericulture farmers` mulberry gardens of Pydeti village (Parigi Mandal, Anantapur District, Andhra Pradesh, India). The study was conducted for three years (2004, 2005 and 2006). Four treatments (T0; control/no treatment, T1; self trap cropping rows with 10 row interval, T2; self trap cropping rows with 10 row interval and treating these rows only with 0.5% neem oil emulsion and T3; self trap cropping rows with 10 rows intervals and treating all the mulberry rows including self trap cropping rows with 0.5% neem oil emulsion) were considered. The results indicated that the incidence increased in T0 and T1 while the same suppressed in T2 and T3. The suppression (%) of tukra incidence between T2 and T3 was not significant. Hence, T2 only was recommended to farmers as its economical viable practice. The results are discussed based on the importance of tukra, its suppression and cost of treatment.