|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Nanoindentation and Wear Characteristics of Al 5083/SiC_p Nanocomposites Synthesized by High Energy Ball Milling and Spark Plasma Sintering显示文摘Al 5083/10 wt% SiC p nano composites have been synthesized by means of high energy ball milling followed by spark plasma sintering (SPS). Nano composites produced via this method exhibited near-theoretical density while retaining the nano-grained features. X-ray diffraction (XRD) analysis indicated that the crystalline size of the ball milled Al 5083 matrix was observed to be ~25 nm and it was coarsened up to ~30 nm after SPS. Nano indentation results of nano composites demonstrated a high hardness of ~280 HV with an elastic modulus of 126 GPa. Wear and friction characteristics with addition of SiC p reinforcement exhibited significant improvement in terms of coefficient of friction and specific wear rate to that of nano structured Al 5083 alloy. The reduction in specific wear rate in the nanocomposite was mainly due to the change of wear mechanism from adhesive to abrasive wear with the addition of SiC p which resulted in high hardness associated with nano-grained microstructure. | Sivaiah Bathula Saravanan M Ajay Dhar | 2012 | Journal of Materials Science & Technology2012，28，11： | 3 |
| 2 | Enhanced thermoelectric performance in p-type ZrCoSb based half-Heusler alloys employing nanostructuring and compositional modulation显示文摘ZrCoSb based half-Heusler(HH)alloys have been widely studied as a p-type thermoelectric(TE)material for power generation applications in the mid-temperature regime.However,their intrinsically high thermal conductivity has been found to be detrimental for the improvement in their thermoelectric figure-of-merit(ZT),which presently is far below unity.In the current work,a state-of-the-art ZT~1.1 at 873 K was realized in an optimized composition of nanostructured Zr1-xHfxCoSb_(0.9)Sn_(0.1) HH alloys by employing compositional modulation i.e.grain-by-grain compositional variations,which leads to a substantial increase in its power factor coupled with a concurrent decrease in its thermal conductivity.Significant reduction in the phonon mean-free-path is observed on Hf substitution,which is comparable to the average crystallite size(~25 nm),thus leading to a very low thermal conductivity of~2.2Wm^(-1)K^(-1) at 873 K,which is amongst the lowest reported in HH alloys.The TE device characteristics,estimated using cumulative temperature dependence model for quantitative evaluation of TE performance,yielded an output power density of~10 Wcm2 with a leg efficiency of~10%in the optimized composition of nanostructured Zr_(1-x)Hf_(x)CoSb_(0.9)Sn_(0.1) HH alloys,which is comparable to the reported efficiencies of other state-of-the-art TE materials. | Nagendra S.Chauhan Sivaiah Bathula Avinash Vishwakarma Ruchi Bhardwaj Kishor Kumar Johari Bhasker Gahtori Ajay Dhar | 2019 | Journal of Materiomics2019，5，1： | 3 |
| 3 | Review on the phosphate-based conversion coatings of magnesium and its alloys显示文摘Magnesium(Mg)and its alloys are lightweight as well as biocompatible and possess a high strength-to-weight ratio,making them suitable for many industries,including aerospace,automobile,and medical.The major challenge is their high susceptibility to corrosion,thereby limiting their usability.The considerably lower reduction potential of Mg compared to other metals makes it vulnerable to galvanic coupling.The oxide layer on Mg offers little corrosion resistance because of its high porosity,inhomogeneity,and fragility.Chemical conversion coatings(CCs)belong to a distinct class because of underlying chemical reactions,which are fundamentally different from other types of coating.Typically,a CC acts as an intermediate sandwich layer between the base metal and an aesthetic paint.Although chromate CCs offer superior performance compared to phosphate CCs,yet still they release carcinogenic hexavalent chromium ions(Cr^(6+));therefore,their use is prohibited in most European nations under the Registration,Evaluation,Authorization and Restriction of Chemicals legislation framework.Phosphate-based CCs are a cost-effective and environment-friendly alternative.Accordingly,this review primarily focuses on different types of phosphate-based CCs,such as zinc,calcium,Mg,vanadium,manganese,and permanganate.It discusses their mechanisms,current status,pretreatment practices,and the influence of various parameters-such as pH,temperature,immersion time,and bath composition-on the coating performance.Some challenges associated with phosphate CCs and future research directions are also elaborated. | Debasis Saran Atul Kumar Sivaiah Bathula David Klaumünzer Kisor K Sahu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，7： | 2 |
| 4 | Ion Exchange Properties of Strontium on in Situ Precipitated Polyantimonic Acid in Amberlite XAD- 7显示文摘 | Sivaiah M V Venkatesan K A Krishna R M | 2005 | Sep Purif Technol2005，44，5： | 1 |
| 5 | Microstructural features and mechanical properties of Al 5083/SiC p metal matrix nanocomposites produced by high energy ball milling and spark plasma sintering显示文摘 | Sivaiah Bathula R.C. Anandani Ajay Dhar A.K. Srivastava | 2012 | Materials Science & Engineering A2012，，： | 1 |
| 6 | Synthesis and Characterization of ZnWO4 Ceramic Powder显示文摘 | Bhaskar K G Sivaiah K Buddhudu S | 2010 | Ceramics International2010，36，1： | 1 |
| 7 | Function and quality of life in patients with recurvatum de- formity after primary total knee arthroplasty a re- view of our joint registry显示文摘 | Siddiqui M M A Yeo S J Sivaiah P | 2012 | The Journal of Arthro- plasty2012，27，6： | 1 |
| 8 | Synthesis and Characterization of ZnWO4 Ceramic Powder显示文摘 | Kumar G B Sivaiah K Buddhudu S | 2010 | Ceramics International2010，36，1： | 1 |
| 9 | Adsorption ofcesium on a composite inorganic exchanger zirconiumphosphate-ammonium molybdophosphate 显示文摘 | Murthy G S Sivaiah M V Kumar S S | 2004 | Journal ofRadioanalytical and Nuclear Chemistry2004，260，1： | 1 |
| 10 | Ion Exchange Properties of Strontium on in Situ Precipitated Polyantimonic Acid in Amberlite XAD-7显示文摘 | Sivaiah M V Venkatesan K A Krishna R M | 2005 | Separation and Purification Technology2005，44，1： | 1 |
| 11 | Innovative bracket design concepts for the installation of aircraft systems显示文摘 | Sivaiah A | 2012 | Journal of Aerospace Technology and Management2012，4，3： | 1 |
| 12 | Gas Entrainment and holdup characteristics in a modified gas-liquid-solid down flow three-phase contactor显示文摘 | Sivaiah M Parmar R Majumder S K | 2012 | Powder Technology2012，217，0： | 1 |
| 13 | Recent Development in Acid and Base-catalyzed Etherification of Glycerol to Polyglycerols显示文摘 | Sivaiah M V Robles-Manuel S Valange S t | 2012 | Catal Today2012，198，： | 1 |
| 14 | Function and quality of life in patients with recurvatum deformity after primary total knee arthroplasty: a review of our joint reg- istry 显示文摘 | Siddiiqui M M Yeo S J Sivaiah P | 2012 | J Arthroplasty2012，27，6： | 1 |
| 15 | Synthesis and characterization of ZnWO4 ceramic powder 显示文摘 | KUMAR G B SIVAIAH K BUDDHUDU S | 2010 | Ceram Int2010，36，1： | 1 |
| 16 | Synthesis and characterization of ZnWO4 ceramic powder显示文摘 | BHASKAR Kumar G SIVAIAH K BUDDHUDU S | 2010 | Ceram Int2010，36，1： | 1 |
| 17 | Synthesis and characterization of ZnWO4 ceramic powder 显示文摘 | BHASKAR Kumar G SIVAIAH K BUDDHUDU S | 2010 | Ceram Int2010，36，99： | 1 |
| 18 | Nickel based catalysts derived from hydrothermally synthesized 1 : I and 2 : 1 phyllosilicates as precursors for carbon di- oxide reforming of methane 显示文摘 | SIVAIAH M V PETIT S BEAUFORT M F | 2011 | Microporous and Meso- porous Materials2011，140，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员