23 Result(s)

Article

Impact of conventional retting of jute (Corchorus spp.) on the environmental quality of water: a case study

Production of quality jute fibre primarily depends on the retting process of jute. However, the quality of retting water is of great concern because of the scarcity of available water bodies for retting. A stu...

B. Majumdar, Lipi Chattopadhyay, Shrestha Barai… in Environmental Monitoring and Assessment (2019)

Article

Comparative Study of Conventional and Improved Retting of Jute with Microbial Formulation

A comparative study between conventional and improved retting of jute (Corchorus olitorius L. and C. capsularis L.) with a talc based microbial formulation was carried out for three consecutive retting trials in ...

Suparna Das, B. Majumdar, A. R. Saha… in Proceedings of the National Academy of Sci… (2018)

Article

Glass Forming Ability, Structure and Soft Magnetic Properties of Rapidly Solidified Fe₈₆Zr_7−xNb_xB₆Cu₁ Alloy Ribbons

In this paper, we report the effect of partially replaced Nb on glass forming ability (GFA), structure and soft magnetic properties in Fe₈₆Zr_7−xNb_xB₆Cu₁ (x = 0 and 3.5 at.%) melt spun ribbons, processed at differ...

D. Arvindha Babu, B. Majumdar… in Transactions of the Indian Institute of Metals (2015)

Article

Effect of Crucible Parameters on Planar Flow Melt Spinning Process

2D numerical simulation of planar flow melt spinning process was accomplished employing transient analysis of fully coupled fluid flow and heat transfer using CFD software—Ansys Fluent. Fe–B–Si alloy was chos...

M. Swaroopa, L. Venu Gopal… in Transactions of the Indian Institute of Me… (2015)

Article

Biodegradation of Plant Pectin and Hemicelluloses with Three Novel Bacillus pumilus Strains and Their Combined Application for Quality Jute Fibre Production

A microbial consortium consisting of three bacterial strains isolated from jute retting water with very high polygalacturonase (PG) (5.1–6.0 IU/ml), pectin lyase (PNL) (185.7–203.7 U/ml), xylanase (15–16.2 IU/...

Suparna Das, B. Majumdar, A. R. Saha in Agricultural Research (2015)

Article

Synthesis of Fe-Si-B-Mn-based nanocrystalline magnetic alloys with large coercivity by high energy ball milling

Alloys of Fe-Si-B with varying compositions of Mn were prepared using high energy planetary ball mill for maximum duration of 120 h. X-ray diffraction (XRD) analysis suggests that Si gets mostly dissolved into...

P. D. Reddi, N. K. Mukhopadhyay, B. Majumdar, A. K. Singh… in Bulletin of Materials Science (2014)

Article

Role of aluminium addition on structure of Fe substituted Fe_{73·5 − x} Si_13·5B₉Nb₃Cu₁Al _x alloy ribbons

The investigation has dealt with the structure and magnetic properties of rapidly solidified and annealed Fe_{73·5 − x} Si_13·5B₉Nb₃Cu₁Al _x (x = 0, 2, 4, 6 at%) ribb...

GAUTAM AGARWAL, HIMANSHU AGRAWAL, M SRINIVAS, B MAJUMDAR… in Bulletin of Materials Science (2013)

Article

Issues on Puddle Formation During Rapid Solidification of Fe–Si–B–Nb–Cu Alloy Using Planar Flow Melt Spinning Process

The present investigation deals with the processing of rapidly solidified 10–40 mm wide, 30–50 μm thick and 10–30 m long continuous amorphous ribbons of Fe–Si–B–Nb–Cu alloy using a planar flow melt spinning (P...

B. Majumdar, M. Sowjanya, M. Srinivas… in Transactions of the Indian Institute of Me… (2012)

Article

Effect of Planar Flow Melt Spinning Parameters on Ribbon Formation in Soft Magnetic Fe_68.5Si_18.5B₉Nb₃Cu₁ Alloy

The effect of planar flow melt spinning (PFMS) parameters on the continuity, surface quality, and structure of 10-mm-wide Fe_68.5Si_18.5B₉Nb₃Cu₁ ribbons has been investigated. The change in shape and stability of t...

M. Srinivas, B. Majumdar, G. Phanikumar… in Metallurgical and Materials Transactions B (2011)

Article

Influence of wheel speed during planar flow melt spinning on the microstructure and soft magnetic properties of Fe_68.5Si_18.5B₉Nb₃Cu₁ ribbons

The structure and soft magnetic properties of Fe_68.5Si_18.5B₉Nb₃Cu₁ (at.%) alloy ribbons produced through planar flow melt spinning at different wheel speeds viz. 34, 17 and 12 m/s have been investigated using X-r...

M. Srinivas, B. Majumdar, D. Akhtar, A. P. Srivastava… in Journal of Materials Science (2011)

Article

Structure, Properties, and Glass Forming Ability of Melt-Spun Fe-Zr-B-Cu Alloys with Different Zr/B Ratios

Melt-spun ribbons of Fe_99–x–y Zr _x B _y Cu₁ alloys with x + y = 11 and x + y = 13 were prepared under similar experimenta...

D. Arvindha Babu, B. Majumdar… in Metallurgical and Materials Transactions A (2011)

Article

Influence of Melt-Spinning Parameters on the Structure and Soft Magnetic Properties of (Fe_0.65Co_0.35)₈₈Zr₇B₄Cu₁ Alloy

Melt-spun ribbons of (Fe_0.65Co_0.35)₈₈Zr₇B₄Cu₁ alloy have been prepared at different wheel speeds, namely, 47, 39, 34, and 17 m/s, and subsequently annealed at 773 K (500 °C) under controlled atmosphere. Structura...

D. Arvindha Babu, A.P. Srivastava… in Metallurgical and Materials Transactions A (2010)

Article

Structure and coercivity of nanocrystalline Fe-Si-B-Nb-Cu alloys

Crystallization behaviour and magnetic properties of melt-spun Fe-Si-B-Nb-Cu alloys have been investigated. It is found that the primary phase changes from α-Fe(Si) to Fe₃Si (DO₃) on increasing the Si content The...

B. Majumdar, D. Akhtar in Bulletin of Materials Science (2005)

Article

Aligned monotectic growth in unidirectionally solidified Zn-Bi alloys

The solidification morphology of the Zn-Bi monotectic alloy is studied through directional solidifcation processing. It is shown that the aligned growth depends on the crystallography of the solid-liquid inter...

B. Majumdar, K. Chattopadhyay in Metallurgical and Materials Transactions A (2000)

Article

Preparation of a ZrO₂–Al₂O₃ nanocomposite by high-pressure sintering of spray-pyrolyzed powders

ZrO₂–Al₂O₃ powders were synthesized by spray pyrolysis. These powders were sintered at 1 GPa in the temperature range of 700–1100 °C. The microstructural evolution and densification are reported in this paper. Th...

R. S. Mishra, V. Jayaram, B. Majumdar, C. E. Lesher… in Journal of Materials Research (1999)

Article

Formation of a crack-free joint between Ti alloyand Al alloy by using a high-power CO2 laser

The present paper aims at producing a crack-free weld between a commercially available Ti alloy (Ti-6 wt% Al-4 wt% V) and a wrought Al alloy (Al-1 wt% Mg-0.9 wt% Si). Ti alloy and Al alloy with a plate thickne...

B Majumdar, R Galun, A Weisheit, B. L Mordike in Journal of Materials Science (1997)

Article

Optical behaviour of tetracyanoplatinate (MCP) encapsulated sol-gel glasses

The photoluminescence spectra at atmospheric pressure and high pressure photoluminescence spectra of the tetracyanoplatinate salts (MCP) KLiCP·2H₂O, KNaCP·3H₂O, Cs₂Ca(CP)₂·nH₂O and Cs₂CP·H₂O encapsulated sol-gel ...

B Majumdar, Mrunalini Mahajan in Bulletin of Materials Science (1996)

Article

The rayleigh instability and the origin of rows of droplets in the monotectic microstructure of zinc-bismuth alloys

B. Majumdar, K. Chattopadhyay in Metallurgical and Materials Transactions A (1996)

Article

Tetrahedral manganese (II) complexes—intense and unique type of mechanoluminophores

Intense and unique type of mechanoluminescence (ML) is found in tetrahedral manganese (II) complexes. During the excitation of ML by the impact of a piston onto the crystal, the ML intensity initially increase...

B P Chandra, M S K Khokhar, R S Gupta, B Majumdar in Pramana (1987)